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Polychaetes (Phylum Annelida) respond to sensory stimuli through the usage of sensory organs and appendages, such as palps, which vary in shape and structure depending on lifestyle. The typical palps of nereidid polychaetes are tapered appendages constituted by two articles. The palpophore is the wider and longer basal article, followed by the thinner and shorter palpostyle that contains the majority of sensory cells. Previous studies on Hediste diversicolor palps were focused on these sensory cells. To achieve a more comprehensive view of the histology and ultrastructure of the palps, H. diversicolor specimens were collected from the northern Portuguese Atlantic coast and the palps were processes for light (semithin sections) and transmission electron microscopy. The current study revealed details of the cuticle, which is thinner in the palpostyle than in the palpophore. Five types of secretory cells were distinguished mainly based on the characteristics of their secretory vesicles. Two of these types could be classified as protein-secreting cells, and the other three as mucus-secreting cells. Granulocytes and eleocytes were found in the celom cavity of the palps. The latter contained lipid droplets and a very large amount of glycogen. In the central region of the palpophore, a ring of muscle cells responsible for the retraction of the palpostyle encircled the main palp nerve. The latter was formed by numerous axons and glial cells containing bundles of filaments and gliosomes.
Laminar–turbulent transition on the suction surface of the LM45.3p blade ($20\,\%$ thickness) was investigated using wall-resolved large eddy simulation (LES) at a chord Reynolds number of $Re_c=10^6$ and angle of attack $4.6^\circ$. The effects of anisotropic free stream turbulence (FST) with intensities $TI=0\,\%$–$7\,\%$ were examined, with integral length scales scaled down from atmospheric measurements. At $TI=0\,\%$, a laminar separation bubble (LSB) forms and transition is initiated by Kelvin–Helmholtz vortices. At low FST levels ($0\,\%\lt TI \leqslant 2.4\,\%$), robust streak growth via the lift-up mechanism suppresses the LSB, while transition dynamics shifts from two-dimensional Tollmien–Schlichting (TS) waves ($TI=0.6\,\%$) to predominantly varicose inner and outer instabilities ($TI=1.2\,\%$ and $2.4\,\%$) induced by the wall-normal shear and inflectional velocity profiles. The critical disturbance kinetic energy scales with $TI^{-1.80\pm 0.11}$, compared with $TI^{-2.40}$ from Mack’s correlation. For $TI\geqslant 4.5\,\%$, bypass transition dominates, driven by high-frequency boundary layer perturbations and streak breakdown via outer sinuous modes induced by the spanwise shear and inflectional velocity profiles. The scaling of streak amplitudes with $TI$ becomes sub-linear and spanwise non-uniformity characterises the turbulent breakdown. The critical disturbance kinetic energy reduces to $TI^{-0.90\pm 0.16}$, marking a transition regime distinct from modal mechanisms. The onset of bypass transition ($TI\approx 2.4\,\%{-}4.5\,\%$) aligns with prior studies of separated and flat-plate flows. A proposed turbulence spectrum cutoff links atmospheric measurements to wind tunnel data and Mack’s correlation, offering a framework for effective $TI$ estimation in practical environments.
Objectives/Goals: This study objective is to evaluate the prevalence and risk factors of burnout in practicing radiologists, with a focus on personal as well as systemic factors. It aims to identify and assess the existing strategies to mitigate burnout, enhance radiologist performance, and improve the quality of patient care. Methods/Study Population: The present study is a systematic review that summarizes existing literature on burnout in radiology, examining its prevalence, risk factors, and effect on diagnostic accuracy, decision-making, and job satisfaction. The review will synthesize validated evidence for emotional exhaustion, depersonalization, and professional fulfillment. The review discusses trends and solutions that have emerged from analysis of data within differing countries, subspecialties, and career stages, focusing on elevated risk of burnout in radiologists. It also assesses downstream effects on patient care quality such as missed diagnoses and increased medical errors. The review also discusses potential strategies for mitigating these negative effects on healthcare delivery. Results/Anticipated Results: The anticipated results of this review are expected to reveal significant variability in burnout rates across radiology subspecialties and practice settings, with prevalence ranging from 33% to 88% (Fawzy et al., 2023). Emotional exhaustion and depersonalization emerge as the most reported symptoms as consistently highlighted in previous studies. Major contributors such as workload, administrative burdens, and technological isolation (e.g., remote work and reduced face-to-face interaction) are anticipated. Radiologists in high-demand areas like interventional radiology and those in private practice may show higher burnout levels than those in academic settings. Protective factors, like exercise, supportive environments, and work-life balance, are expected to reduce burnout levels. Discussion/Significance of Impact: This study calls attention to the importance of addressing radiologist burnout as a key institutional priority. Early and effective interventions are essential for improving job satisfaction, reducing medical errors resulting in enhanced patient care. Addressing burnout is crucial for maintaining a sustainable and effective radiology workflow.
Sarcoptic mange, caused by the Sarcoptes scabiei mite, is a highly transmissible skin condition affecting many mammalian species worldwide. South American camelids (SAC) have the highest reported prevalence of mange in South America, causing economic losses and posing a conservation threat to wild SAC. This study investigated mite diversity in SAC in Argentina and assessed relationships between known outbreak areas. Distinct epidemiologic scenarios were explored: the San Juan-La Rioja region, where a mange outbreak decimated wild SAC populations, and the Puna region of Jujuy, where domestic and wild SAC coexist and infections often occur. The mitochondrial gene cox1 and ten microsatellites were analysed from mites collected in five sampling events in Jujuy and four in San Juan-La Rioja between 2017 and 2023. A single cox1 haplotype was observed regardless of mite origin or host species. Comparison with partial cox1 sequences from other camelids worldwide showed little variation. Microsatellite markers revealed lower diversity in mites from San Juan-La Rioja compared to Jujuy. A single strain common to vicuñas and guanacos was identified in San Juan-La Rioja, while three strains were detected in Jujuy affecting vicuñas and/or domestic llamas. Some mites from Jujuy exhibited mixed genetic composition between the two regions, and results confirmed that domestic and wild SAC shared mite strains. This study enhances understanding of sarcoptic mange transmission among SAC species, contributing to vicuña and guanaco conservation and high-altitude livestock farming. Additionally, these findings provide support for the development of intersectoral management strategies to address this significant threat.
Racial divides in American attitudes toward trade are often explained by labor market discrimination and traits like nationalism. However, recent research shows that perceptions of fairness, particularly “asymmetric fairness” concerns about “falling behind” other countries, significantly shape these attitudes. We theorize that linking these perspectives offers new insights. Drawing on critical race theory and cognitive psychology, we theorize that Black Americans, unlike their white counterparts, do not view trade through the lens of asymmetric fairness. Since Black Americans have not benefited from the same social, economic, and political privileges, they are less concerned with “falling behind” and instead focus on fairness as equality. This leads them to evaluate trade agreements through a “principled fairness” lens, contributing to support for trade policies that benefit both the home and foreign country, as opposed to prioritizing an “America First” trade agenda. We test this theory in a national survey experiment and find strong support.
The establishment of the possible presence of life on Mars (past or present) is based on the study of planetary analogues, which allow in situ analysis of the environments in which living organisms adapt to often extreme conditions. Although Mars has been a candidate for hosting life, based on observations made decades ago, it is thanks to the characteristics identified in environments, mainly volcanic, that it has been possible to calibrate instruments and detail the features of the red planet. In this paper, we present a review of the main characteristics of different planetary analogues, particularly deepening the study of Antarctica, to later expose the factors studied in Deception Island that have contributed to considering it as an analogue of Mars from different perspectives. Although geological and geomorphological studies on the analogies of the island already exist, detailed analyses that present the approach of astrobiological analogues are required, thus allowing further research.
This cross-sectional ecological study described fruit and vegetable (F&V) intake variability across 144 cities in 8 Latin American countries and by city-level contextual variables. Data sources came from health surveys and census data (Argentina, Brazil, Chile, Colombia, El Salvador, Guatemala, Mexico, and Peru). Self-reported frequency of F&V intake was harmonised across surveys. Daily F&V intake was considered as consumption 7 d of the week. Using a mixed-effects model, we estimated age and sex-standardised city prevalences of daily F&V intake. Through Kruskal–Wallis tests, we compared city F&V daily intake prevalence by tertiles of city variables related to women’s empowerment, socio-economics, and climate zones. The median prevalence for daily F&V intake was 55.7% across all cities (22.1% to 85.4%). Compared to the least favourable tertile of city conditions, F&V daily intake prevalence was higher for cities within the most favourable tertile of per capita GDP (median = 65.7% vs. 53.0%), labour force participation (median = 68.7% vs. 49.4%), women achievement-labour force score (median = 63.9% vs. 45.7%), and gender inequality index (median = 58.6% vs. 48.6%). Also, prevalences were higher for temperate climate zones than arid climate zones (median = 65.9% vs. 50.6%). No patterns were found by city level of educational attainment, city size, or population density. This study provides evidence that the prevalence of daily F&V intake varies across Latin American cities and may be favoured by higher socio-economic development, women’s empowerment, and temperate weather. Interventions to improve F&V intake in Latin America should consider the behaviour disparities related to underlying local social, economic, and climate zone characteristics.
Sickle cell disease (SCD) is a rare disease, including renal complications. Erythropoiesis-stimulating agents (i.e., recombinant human erythropoietin, rHuEPO) are recommended for SCD and renal impairment. Evidence suggests its effectiveness in raising hemoglobin (Hb), which may reduce the need for regular blood transfusions. Cost-effectiveness analysis (CEA) and budget impact analysis (BIA) of rHuEPO were performed from the Brazilian Unified Health System (SUS) perspective.
Methods
A decision tree was created to assess rHuEPO’s impact on reducing blood transfusions. Quality-adjusted life year (QALY) for transfusion dependency and direct medical costs related to rHuEPO and transfusion were considered. SCD patients with worsening kidney function and Hb levels enter the model with an indication of receiving regular transfusions; those who proceed to the rHuEPO+standard care arm are likely to have clinically relevant elevation in Hb levels (i.e., <1.5 g/dL), suspending transfusions, and those who do not respond to treatment continue to receive regular transfusions. BIA population was estimated based on epidemiological data, considering direct costs over a five-year horizon.
Results
rHuEPO+standard care compared to standard care generated 36.8 percent less need for transfusions, resulting in an increase of 0.033 QALY and a saving of BRL11,564 (USD2,362) per patient/year. rHuEPO was the dominant alternative; that is, there was greater clinical benefit and lower total cost. At BIA, the eligible population was 5,274 patients per year, on average. The direct cost of acquiring rHuEPO for the total eligible population summed BRL13,737,129 (USD2,806,016) in five years. However, considering the estimated effectiveness of CEA in reducing transfusions, BIA demonstrated savings of BRL96,545,791 (USD19,720,936) accumulated over five years.
Conclusions
Health technology assessments showing the new alternative as dominant are uncommon, especially in rare diseases, where patented orphan drugs usually have increased costs, which is not the case of rHuEPO. In this analysis, rHuEPO remained the dominant alternative and its incorporation would result in savings that may contribute to the sustainability of the Sistema Único de Saúde, Brazil’s national health system.
Therapeutic positioning reports (IPTs, Spanish acronym) are a crucial tool for informing funding and pricing decisions for drugs in the Spanish healthcare system. In 2020, for the first time the inclusion of economic evaluations (EEs) was explicitly set as a primary objective in a new Action Plan aimed at consolidating IPTs. This paper seeks to examine the uptake of EE into IPTs and to compare the methods and techniques employed in the EEs conducted during the two-year pilot phase following the reform, i.e., from June 2021 to July 2023. During this period, a total of 181 IPTs were published, with 19 (10.5%) incorporating an EE section. However, out of these 19 identified IPTs, six did not actually conduct a de novo EE, and four only performed a drug cost minimisation analysis. Six IPTs conducted EE analyses following international methodological standards. Based on this review, we observe that the percentage of IPTs incorporating EEs had remained low and exhibited significant heterogeneity. The experience of these two years must be translated into lessons that can serve to reinforce the evaluation of the efficiency of medicines in Spain in the coming years.
The Cardiovascular Health Diet Index (CHDI) is a diet quality score based on the dietary guidelines of the American Heart Association for cardiovascular health but with some adaptations, such as red meat, dairy products, beans and ultra-processed foods in its components. The CHDI has shown good relative validity parameters; however, its association with health outcomes is still unclear. Thus, our aim was to investigate the association between the CHDI score with subclinical atherosclerosis. Data from the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil) cohort were used. Subclinical atherosclerosis was assessed by measuring coronary artery calcification at baseline (2008–2010) and second wave (2012–2014) and carotid intima-media thickness at baseline and at the third wave (2017–2019). The CHDI score (ranges from 0 to 110 points) was applied to dietary data obtained from an FFQ at baseline. Poisson regression with robust variance, linear regression and linear mixed-effects models were used to evaluate the association of the CHDI score with coronary artery calcification incidence (n 2224), coronary artery calcification progression (n 725) and changes in carotid intima-media thickness (n 7341) over time, respectively. After a median 8-year follow-up period, a 10-point increase in the CHDI score was associated with a decrease in carotid intima-media thickness of 0·002 mm (95 % CI –0·005, –0·001). No association was observed between the CHDI score and coronary artery calcification incidence and progression after a 4-year follow-up period. Higher scores in the CHDI were prospectively associated with decreased subclinical atherosclerosis after an 8-year follow-up period.
While sudden ‘natural’ disasters demand attention, the cumulative and ongoing impacts of disasters – including saltwater incursions, species loss, ocean acidification and the reduction of sea ice – are slow planetary changes scientifically monitored, yet paradoxically overlooked within western capitalist logics of development and progress. Rather than raising public consciousness of climate change, slow changes easily overlooked by powerful nation states strengthen narratives of climate denialism and scepticism even though there are authoritative reports and global agreements. Contemporary research shows the emergence of polarised debates on climate change that have limited global response and action, privileged narrow understandings of scientific progress and even denied scientific findings all together (Stengers, 2011; Castree, 2017; Connolly, 2017; Freestone, 2018). While there are scientific facts to support discourses of climate change, this ‘inconvenient truth’ has ‘failed to sell’ (Freestone, 2018). In the policy arena, stories of slow changes can be easily associated with ‘marketing spin, PR, propaganda or lies’ (Freestone, 2018) especially when the long- term effects that use the language of ‘extinction’ are not immediately visible or felt. But such a short-sighted approach that continues to support capitalist logics of development and extractive energy futures is tested every time there are extreme weather events or catastrophes. In this chapter we attempt to respond to scholarly calls for fresh and different approaches to climate and environmental knowledge, through a focus on the visceral practice of listening to the unthought. This is the ‘unthought’ that is attentive to the affective intensities of matter (that, in this chapter, is the example of sea ice) that is ‘above and beyond life’ and decentres the liberal human subject (Yusoff, 2017). This chapter also responds to Noel Castree's (2017) call for stronger relationships between the geosciences, social sciences and humanities that moves beyond ‘ignorance, timidity and distance’ (2017: 56– 7) and engages with the public in ways that shift the global discourse on environmental change. We take up these challenges in light of the plea made by Isabelle Stengers and Stephen Muecke (2018) for a ‘slow science’ that moves beyond objectivity and is open to messiness and speculative thinking.
To evaluate the association between ultra-processed food consumption and adherence to the EAT-Lancet diet in a representative sample of the Brazilian population.
Design:
The study used data from the Brazilian National Dietary Survey 2017–2018 and employed linear regression models to evaluate the association between ultra-processed food consumption and adherence to the EAT-Lancet diet, as measured by the Nova food system and Planetary Health Diet Index (PHDI), respectively.
Setting:
Nationally representative sample of the Brazilian population.
Participants:
The study included 46 164 Brazilians ≥ 10 years old.
Results:
The average PHDI total score was 45·9 points (95 % CI 45·6, 46·1). The ultra-processed food consumption was, with dose-response, inversely associated with the adherence to the EAT-Lancet diet. The PHDI total score was 5·38 points lower (95 % CI –6·01, –4·75) in individuals in the highest quintile of consumption of ultra-processed foods, as compared to those in the first quintile. The PHDI score was also inversely associated with the share of processed culinary ingredients and processed foods and positively associated with the share of unprocessed or minimally processed foods.
Conclusions:
Our study showed an inverse relationship between the consumption of ultra-processed foods and the adherence to a healthy and sustainable diet.
The harmful consumption of alcohol is known for how tortuous its management can be in mental health, encouraging introspection of it as a serious problem is perhaps the main key to starting to battle against its damaging influence on the development of a functional and full life.
Objectives
To describe a clinical case showing an unpredictible complication in an alcohol detoxification process.
Methods
54-year-old man, native of Cádiz, widowed for half a decade, without children. He resides with his parents in the family home. Currently unemployed for approximately a year. He has previously worked in the IT sector. As a notable somatic history, we found long-established arterial hypertension and a total hip replacement. He has been under irregular follow-up with a mental health team for anxiety-depressive symptoms in the context of grief. He goes to the emergency service brought by his family to begin the detoxification process in the hospital setting. He acknowledges ethanol consumption since he was widowed, which began when he awakes; quantities that ranged between one or up to three bottles of distilled liquor per day, generally consumption is in the home environment. A little less than a year ago, he began to isolate himself in his room and abandon his self-care, eating increasingly insufficient food intake, refusing to receive professional care to quit the habit, mainly because he did not recognize it as disruptive.
The patient was admitted to hospital with symptoms suggestive of withdrawal, making it extremely difficult to control blood pressure levels. On the third day of admission to the acute care unit, fever peaks, blood pressure levels well below normal parameters, and compromised level of consciousness began to be evident.
Results
Blood tests were performed that, together with the clinical picture, suggested imminent septic shock, so critical care was contacted for transfer and stabilization. A germ of probable urinary etiology sensitive to a broad spectrum of antibiotics was isolated in blood cultures, and the medication of the detoxification process was progressively optimized. Once clinical stability was achieved at all levels, an inpatient cessation resource was managed, which the patient accepted and considered suitable for his complete recovery.
Conclusions
A holistic approach to the alcoholic patient is important, since serious problems of an organic nature often arise. This is why a multidisciplinary intervention is necessary, as well as a holistic approach to care, involving both classic pharmacology and assiduous long-term psychotherapeutic intervention.
A 28 year old patient will be presented. This paramilitary man was brought to the Emergency Room due to an autolytic attempt with Benzodiazepines, along with a mouth suture, in the context of a soon to be resolved problematic ankle osteosynthesis procedure. The patient claimed to be suffering pain, furthermore struggling due to the fact he could not be working due to his ankle issue. Language barrier was a problem during the interview.
Objectives
The objetives of this case is to try to explain the issues that may arise in patients with personality disorders in the context of an autolytic attempt
Methods
This patient will be presented, along with systematic bibliography review of the topic.
Results
The following results were extracted upon the attention given to this patient which was admitted to the Psychiatric Unit.
First of all, the mouth stitches were removed, along with a petition for toxicological analysis. The results gave positive for cannabis and benzodiazepines. The patient was also brought previously this year with another autolytic attempt, this time on cocaine consumption too. Furthermore, a thorough review was made of the other autolytic attempts, including those which happened in his country of origin. The patient has hundreds of small cuts among his arms, from previews cuts made in the past. Furthermore, subcutaneous wounds were auto inflicted in the ER, with a small blade.
Among the whole interview, it was clear he had a personality disorder, with high impulsivity levels and lack of control once the situation overflows.
We also tried to understand the outcome of suturing his mouth. The patient referred his acts of impulsiveness due to his overwhelming situation of both having no job at this moment and the pain he was suffering due to his ankle procedure.
The patient was admitted to our Unit due to the high risk he could repeat this act. Upon arrival, the same day he was admitted, the patient asked if he had to stay at the unit. When explaining the following already told event, furthermore insisting in the possibility of been evaluated by the Traumatology team, he proceeded to try and hang himself with his medical-hospital clothing.
The patient was treated with antipsychotics. Along with Lormetazepam at night. At the end of the hospitalization, and after been evaluated by the Psychiatrist of this Unit, the patient was also treated with Lithium due to its effectiveness in the treatment of autolytic attempts.
Conclusions
Personality disorders are one of the psychiatric pathologies that prevail with greater frequency in autolytic attempts 1. Additionally, it should be taken into account the possible ongoing consumption of psychoactive drugs that could also derive in psychopathological decompensation. On top of the following, the use of antipsychotic treatment is indicated for the managing of conduction altercations 2, besides Lithium being a great option in managing suicidal temptations 3.
Schizotypal personality is a condition suffered by 4% of the population. It is defined by presenting interpersonal, behavioral and perceptual features similar to the clinical features of psychotic disorders, such as schizophrenia, in less intensity and dysfunctionality, but at risk of reaching psychosis.
Objectives
Presentation of a clinical case about a patient with premorbid schizotypal personality traits presenting with an acute psychotic episode.
Methods
Literature review on association between schizotypal personality and psychosis.
Results
A 57-year-old woman with a history of adaptive disorder due to work problems 13 years ago, currently without psychopharmacological treatment, goes to the emergency room brought by the emergency services due to behavioral alteration. She reports that “her husband and son wanted to sexually abuse her”, so she had to run away from home and has been running through the streets of the town without clothes and barefoot.
Her husband relates attitude alterations and extravagant behaviors of years of evolution, such as going on diets of eating only bread for 40 days or talking about exoteric and religious subjects, as believing that the devil got inside her husband through a dental implant. He reports that these behaviors have been accentuated during the last month. She has also created a tarot website, and has even had discussions with several users. She is increasingly suspicious of him, has stopped talking to him and stays in his room all day long, with unmotivated laughter and soliloquies.
It was decided to admit him to Psychiatry and risperidone 4 mg was started. At the beginning, she was suspicious and reticent in the interview. As the days went by, communication improved, she showed a relaxed gesture and distanced herself from the delirious ideation, criticizing the episode.
Conclusions
In recent years, there has been increasing interest in understanding the association between schizotypy and serious mental disorder. Several theories understand schizotypy as a natural continuum of personality that reveals genetic vulnerability and that can lead to psychotic disorder when added to precipitating factors. Other theories define schizotypy as a “latent schizophrenia” where symptoms are contained and expressed in less intensity.
Around 20% evolves to paranoid schizophrenia or other serious mental disorders. It is complex to distinguish between those individuals in whom schizotypy is a prodrome and those in whom it is a stable personality trait. To date, studies applying early psychotherapeutic or pharmacological interventions have had insufficient and contradictory results, and the follow-up and treatment of these individuals could be a stress factor and a stigma. Some studies are looking for reliable markers of evolution to schizophrenia in order to establish adequate protocols for detention, follow-up and treatment.
Conversive disorder is characterised by the presence of one or more involuntary neurological symptoms that are not due to a clear medical pathology. On the other hand, consciously simulated illnesses fall into two diagnostic categories: factitious disorders and malingering, which are differentiated by both the motivation for the behaviour and the awareness of that motivation. Factitious disorder behaviours are motivated by an unconscious need to assume the sick role, whereas malingering behaviours are consciously driven to achieve external secondary gains.
Objectives
Study of the differences between conversion disorder and factitious disorder and their repercussions from a case of difficult diagnosis.
Methods
Bibliographic review of scientific literature based on a relevant clinical case.
Results
We present the case of a 14-year-old male patient. Adoptive parents. Studying in high school. Social difficulties since childhood. He comes to the emergency department on several occasions referring stereotyped movements and motor tics in the four extremities with left cervical lateralization. Increase of these symptoms in the last month, so it was decided to admit him to the pediatric hospital. After observation and study of the patient’s movements with normal complementary tests he should return home. The following day he returned to the emergency department after an episode of dizziness, mutism and emotional block. It was decided to admit him to Psychiatry for behavioral observation and differential diagnosis.
Conclusions
In the assessment of patients it is essential to make an appropriate diagnosis taking into account the patient’s symptomatology and the patient’s background and life context. Conversion disorder is the unintentional production of neurological symptom, whereas malingering and factitious disorder represent the voluntary production of symptoms with internal or external incentives. They have a close history and this has been frequently confounded. Practitioners are often confronted to medically unexplained symptoms; they represent almost 30% of neurologist’s consultation. The first challenge is to detect them, and recent studies have confirmed the importance of “positive” clinical bedside signs based on incoherence and discordance. Multidisciplinary therapy is recommended with behavioral cognitive therapy, antidepressant to treat frequent comorbid anxiety or depression, and physiotherapy. Factitious disorder and malingering should be clearly delineated from conversion disorder. Factitious disorder should be considered as a mental illness and more research on its physiopathology and treatment is needed, when malingering is a non-medical condition encountered in medico-legal cases.
Clozapine is an atypical antipsychotic synthesised in 1958. It was withdrawn from the market in the 1970s due to the appearance of agranulocytosis, but was reintroduced due to strong evidence of its efficacy and superiority over other antipsychotics in treatment-resistant schizophrenia.
Objectives
To describe the adequate response to clozapine in treatment-refractory psychosis.
Methods
Review of the scientific literature based on a relevant clinical case.
Results
A 16-year-old woman was admitted to a psychiatric inpatient unit for psychotic symptoms and behavioural disorders. She lives with her father and older sister; she has not been in contact with her mother, who lives in another country, for several years. She attends secondary school, with poor academic performance. Maternal diagnosis of schizophrenia. She started using cannabis two years ago, with a progressive increase up to 20 grams per week. He reports the onset of a feeling of strangeness a year ago, with progressive isolation in his room, referring to delirious ideation of harm towards classmates and people from his town, self-referentiality and delirious interpretations of religious mystical content (“God speaks to me through a dove”). He comments on the phenomenon of theft and thought-reading. Soliloquies and unmotivated laughter are observed.
Conclusions
Treatment was started with risperidone, progressively increasing the dose up to optimisation, without achieving a decrease in positive symptoms, but with the appearance of excessive sedation and sialorrhoea. It was combined with aripiprazole up to 20mg, maintained for a couple of weeks, without significant clinical improvement. Given the failure of two lines of therapy, it was decided to change to clozapine up to a dose of 75mg, with adequate tolerance and response, achieving a distancing of the delirious ideation. Regular haematological controls were performed, with no alterations in haemogram or troponins.
Lithium was the first mood stabilizer and today continues to be a first-line treatment in the treatment of bipolar disorder despite its adverse effects, which make it important to monitor blood levels and control kidney function.
Objectives
Presentation of a case of litium withdrawal and relapse in bipolar disorder. Literature review relating to the risk of relapse when lithium treatment is interrupted.
Methods
We present a clinical case of a patient who suffers a deterioration in renal function that requires the withdrawal of lithium and who consequently suffers a relapse. We conducted a bibliographic research of articles in Pubmed on this topic.
Results
A 49-year-old male, with a history of multiple admissions to UHB since the age of 18 with a diagnosis of bipolar disorder and treatment with lithium. Decompensations towards the manic pole have always been related to interruptions in lithium treatment. On several occasions when the patient was feeling well emotionally, he believed himself to be “cured” and abandoned the treatment, triggering a manic episode, showing verbal aggression, increased self-esteem and delusional ideation of harm. Remission was usually achieved with the reintroduction of lithium and the addition of high-dose quetiapine. Between episodes, constant overvalued ideas of economic scarcity seemed to persist, which were accentuated in the form of delusional ideas of ruin in depressive decompensations. After 7 years of stability, control analysis showed blood litemia of 2.2 mEq/L with deterioration of kidney function and generalized tremor was observed, without improvement after serum therapy. He was admitted for dialysis and lithium was suspended. Treatment with valproate was started and a consultation scheduled in a week to adjust the dose. The patient did not attend that consultation and was admitted three days later to Psychiatry Hospitalization showing a challenging attitude, evident dysphoric mood, accelerated speech, with derailments and echolalia. Delusional ideation of harm with auditory hallucinations. Insomnia and hyporexia. Chronic renal failure persisted.
Conclusions
Lithium is a very effective drug but with a narrow therapeutic range that requires adequate monitoring due to the possible consequences of its use at different organs and systems of the body. when lithium is found in the blood at toxic levels with deterioration of kidney function and glomerular filtration fails to recover, lithium treatment should be suspended. Sudden withdrawal of lithium significantly increases the risk of relapse due to rebound effect. More than 50% of patients experience a recurrence within 10 weeks of withdrawal.
Delusional parasitosis, also known as delusional infestation or Ekbom’s syndrome, is a rare psychotic disorder characterized by the false belief that a parasitic skin infestation exists, despite the absence of any medical evidence to support this claim. These patients often see many physicians, so a multidisciplinary approach among clinicians is important. Many patients refuse any treatment due to their firm belief that they suffer from an infestation, not a psychiatric condition, so it is crucial to gain the trust of these patients.
Objectives
The comprehensive review of this clinical case aims to investigate Ekbom syndrome, from a historical, clinical and therapeutic perspective.
Methods
Literature review based on delusional parasitosis.
Results
A 65-year-old woman comes to the psychiatry consultation referred by her primary care physician concerned about being infested by insects that she perceives through scales on her skin for the last three months. She recognizes important impact on her functionality. She is also convinced that her family is being infected too. As psychiatric history she recognizes alcohol abuse in the past (no current consumption) and an episode of persecutory characteristics with a neighbor, more than ten years ago. On psychopathological examination, she shows delusional ideation of parasitosis, with high behavioral repercussions, cenesthetic and cotariform hallucinations, as well as feelings of helplessness and anger. Treatment with Pimozide was started and the patient was referred to dermatology for evaluation, a plan she accepted. Her primary care physician and dermatology specialist were informed about the case and the treatment plan. In the recent reviews, the patient is calmer, however, despite the corroboration of dermatology and in the absence of organic lesions in cranial CT, she is still unsatisfied with the results, remaining firm in her conviction of infestation. It was decided to start treatment with atypical neuroleptics (Aripiprazole), with progressive recovery of her previous functionality.
Conclusions
Despite the increase in the number of studies in recent years, there are still few studies on this type of delirium. The female:male ratio varies in the bibiliography (between 2:1 and 3:1). The onset is usually insidious, generally appearing as a patient who comes to his primary care physician convinced of having parasites in different skin locations. It is usual to observe scratching lesions or even wounds in search of the parasite. In the past, the most used and studied treatment was Pimozide. Currently the treatment of choice is atypical neuroleptics due to their lower side effects. The latest reviews on the prognosis of this disorder show data with percentages of complete recovery between 51% and 70%, and partial responses between 16.5% and 20%. Finally, for a good diagnosis and therapeutic management, it is important to achieve a multidisciplinary approach.
Individuals with schizotypal personality disorder are characterized by tendencies to magical thinking, unusual perceptions, discomfort in social situations, and restricted affect. It is frecuent that they have social anxiety and have difficulty in understanding the motivations and thoughts of others.
Objectives
Presentation of a case of a patient who was first diagnosed with adjustment disorder, but on a closer study, was discovered to have a schizotypal personality disorder.
Methods
We conducted a bibliographic review by searching for articles about schizotypal personality disorder and theory of mind in Pubmed.
Results
We present the case of a 39-year-old woman, diagnosed with adjustment disorder after a conflict at work with a colleague that caused her anxiety-depressive symptoms. In consultations, the patient shows verbiage without expansiveness or euphoria, with rambling speech. She expresses feelings of indignation and injustice, she is irritable, with contained anger. She refers that she prefers to be distrustful of others because she does not understand their intentions. Her thoughts are very rigid, which leads her to have avoidant and phobic attitudes, having no relationships of friendship throughout her life.
A neuropsychological evaluation is carried out, resulting in a surprising WAIS with a TIC of 128. However, the Mayer‐Salovey‐Caruso Emotional Intelligence Test (MSCEIT) shows difficulties in Perception, Comprehension and Emotional Management
Considering the patient’s symptomatology as a whole, it is noteworthy:
– Sustained social isolation throughout their life history
– Superficiality of interpersonal relationships
– Distrust and slight self-referentiality. Deficit in inferring the feelings and thoughts of others
– Peculiar speech with ideas of magical content, superstitions and rituals…
Which together supported a diagnosis of schizotypal personality disorder and generalized anxiety disorder. From this point we started to work on her self-esteem, modification of irrational beliefs and cognitive distortions, interpersonal communication and metacognitive therapy, with good results.
Conclusions
The type of schizotypal patients who come to consultations most frequently are the actively isolated/timorous profile due to their intense social anxiety and difficulties in understanding and adapting to the social world around them. Initial therapy should be empathic support. The theory of mind is the ability to infer the other’s mental states and therefore predict their behavior, this ability being diminished in the schizotypal patient. Mentalization tasks, metacognitive therapy, cognitive flexibility training, social skills training, and promoting self-worth are useful. On some occasions it may be necessary to start psychopharmacological treatment to control anxiety and unusual perceptions when they cause discomfort.