To save content items to your account,
please confirm that you agree to abide by our usage policies.
If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account.
Find out more about saving content to .
To save content items to your Kindle, first ensure no-reply@cambridge.org
is added to your Approved Personal Document E-mail List under your Personal Document Settings
on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part
of your Kindle email address below.
Find out more about saving to your Kindle.
Note you can select to save to either the @free.kindle.com or @kindle.com variations.
‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi.
‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.
Acute rhinosinusitis is one of the most common conditions seen in primary care. One in seven adults are diagnosed with ARS annually, resulting in one in five of all antibiotic prescriptions. Yet there has been limited research comparing the effectiveness of widely used treatments such as antibiotics and nasal steroids. Conducting such a trial in the context of decades of established practice poses unique challenges.
Methods:
A feasibility phase was conducted with continuing feedback to provide refinement and guidance regarding the design of a large-scale, pragmatic randomized controlled trial. The pilot trial assessed the ability to enroll, retain, and evaluate adherence to the intervention and assessment protocols.
Results:
The feasibility phase allowed us to seek input from patients and experts. This resulted in changes pre and post pilot that will impact the full study. A priori enrollment targets for the pilot were achieved, and with high adherence rates. In total, 373 patients were pre-screened and 140 patients were enrolled participants. Adherence to data collection via the daily diary was 93% throughout the study, with 95% completing their diary on the day of the primary outcome, 3 post-randomization.
Conclusion:
Expert panels and a patient advisory committee recommended critical changes to our study design. Stakeholder engagement is a key component of this funding source and was widely used throughout the 18-months. An achieved primary goal of the feasibility phase was to evaluate recruitment and study methods prior to implementing a large clinical trial that requires significant resources.
Test whether a dissonance-based transdiagnostic eating disorder treatment, body project treatment (BPT), produces greater reduction in brain reward region response to the thin ideal and behaviors used to pursue this ideal and eating disorder symptoms, and higher abstinence from eating disorder behaviors and remittance from eating disorder diagnoses than a matched transdiagnostic interpersonal psychotherapy (IPT).
Methods
Women with various eating disorders (N = 83) were randomized to 8-week group-implemented BPT or IPT and completed functional magnetic resonance imaging (fMRI) at pretest and posttest, and surveys and masked diagnostic interviews at pretest, posttest, and 6-month follow-up.
Results
BPT versus IPT participants showed significantly greater reductions in mid cingulate cortex response to thin models, anterior cingulate cortex response to eating disorder behavior words, eating disorder symptoms (d = 0.54), and body dissatisfaction (d = 0.57), and marginally greater reductions in psychosocial impairment (d = 0.39) at posttest, as well as significantly greater reductions in body dissatisfaction (d = 0.68) and psychosocial impairment (d = 0.63), and marginally greater reductions in eating disorder symptoms (d = 0.53) at 6-month follow-up. At posttest, BPT versus IPT participants showed significantly greater abstinence from binge eating and purging (48% versus 23%, respectively) but did not differ on remittance from eating disorder diagnoses (52% versus 44%, respectively).
Conclusions
Results provide further evidence of target engagement for BPT and suggest that it is more effective than IPT in treating a range of eating disorders.
This chapter discusses care considerations for the immediate puerperium. This includes an overview of routine postnatal care for the mother’s physical and mental health, as well as important signs and symptoms of maternal and infant compromise. Common puerperal complications are described and risk factors, as well as management reviewed. Presentation and management of postnatal emergencies such as postpartum haemorrhage and haematomas, sepsis, venous thromboembolism and pulmonary embolus are discussed. Chronic postnatal complications including hypertension, problems of the lower urinary tract and pelvic organs, anaesthetic complications, wound breakdown, breast pain and anaemia are detailed, with a final section dedicated to mental health and the care of a woman presenting with a stillbirth.
The uterus acts as a receptacle providing the home for the growing fetus from conception to the time of delivery. Globally most women deliver vaginally. The mechanism of onset of labour is still a speculation. Current theory is that hormonal change brought about by the hypothalamopituitary axis lowers progesterone, which is a muscle relaxant. This is followed by local changes in the chorioamnion that result in the production of prostaglandins, which cause softening and effacement of the cervix and uterine contractions that are key elements for the onset and progress of labour. Absent mechanical difficulties, uterine contractions bring about the process of cervical dilatation and descent of the head, resulting in spontaneous expulsion of the fetus, placenta and membranes. The main reasons for slow progress are inefficient uterine contractions (P-power), relative disproportion due to malposition, or cephalopelvic disproportion either due to a large baby and head (P-passenger) or a relatively small or non-gynaecoid pelvis (P-passage). These three Ps influence labour outcome.
Rapid molecular testing for antimicrobial resistance (AR) provides an indication of resistance faster than phenotypic antimicrobial susceptibility testing. We summarize the adoption of molecular testing for AR among US acute care hospitals and discuss the potential impact on National Healthcare Safety Network’s surveillance for AR.
Triage may be defined as the assessment of patients to determine both nature of and need for urgency of treatment required. While it is commonly thought of as identifying a hierarchy of priority within multiple patients, in labour ward it is the system by which the medical needs and management requirements of specific patients within a particular clinical area are categorised to ensure appropriate allocation of resources, both for individual patients and in the context of the whole ward and the resource pool. In an obstetric setting, triage is not only the principal gateway into labour ward for emergency attenders who require unscheduled attention in a maternity unit but it also remains key to the ongoing management of all patients on the labour ward itself. Effective and efficient triage is considered a key competency for labour ward clinicians and, indeed, prioritisation of the ‘Labour Ward Board’ is a favourite examination question for trainees about to become specialists.
The twin birth rate has increased over the last four decades due to rising maternal age at conception and the use of assisted reproductive technology. Compared to singletons, twins, especially the second twin, are more susceptible to perinatal complications. However, current evidence suggests that in well-selected patients under skilled obstetricians’ care, planned vaginal delivery can be just as safe as planned caesarean delivery. This chapter elaborates on evidence-based information about selection criteria for vaginal twin delivery, timing of delivery and intrapartum management. Techniques for delivering vertex and nonvertex second twins and intertwin delivery intervals will also be discussed, along with addressing the associated controversies. Given the tendency of twin pregnancies to have preterm delivery, this chapter will also delve into the decision-making process for the mode of delivery in preterm twin gestations.
Peripartum rupture of the uterus is rare, but is a life-threatening complication leading to maternal and perinatal morbidity and mortality. There is wide variation in the reported incidence of rupture of the uterus, with high incidence and more morbidity and mortality among the developing countries compared to the developed world. In the high-income countries uterine rupture is mainly due to scar rupture, while in the developing world, rupture due to prolonged and obstructed labour is still happening in spite of the progress made in the field of antenatal and intrapartum care. Caesarean section rates are increasing all over the world, and women with prior caesarean section are at higher risk of uterine rupture during subsequent pregnancy. Women with a previous lower segment caesarean section can opt for an elective caesarean delivery or a vaginal delivery after caesarean (VBAC). The most feared complication of VBAC is uterine rupture with its associated maternal and fetal consequences.
Caesarean delivery is one of the most frequently performed operations. It is indicated in situations where the benefits associated with the procedure outweigh those of vaginal delivery. With appropriate indications, caesarean deliveries can be life-saving for both the mother and the fetus. The use of a correct surgical technique is essential to improve safety and reduce the risk of complications. As with most surgical procedures, different surgeons have different operating skills, technical difficulties may vary from case to case, and operating room conditions also differ in different parts of the world, so it is difficult to standardise the technique and to carry out research comparing different technical variations. Nevertheless, in this chapter, the published evidence is reviewed and summarised for the individual steps of caesarean delivery.
The causes of postpartum haemorrhage are well established and there is growing awareness of the important risk factors. The immediate treatments tend to be directed at the most common causes. Identification of risk factors in women allows optimisation to mitigate their effects. Over the past years there has been growing evidence about how to optimise the diagnosis of postpartum haemorrhage and which treatment strategies are likely to be the most effective. Objective measurements of blood loss are encouraged as they are more accurate than visual estimation and bundled treatments are essential in avoiding treatment delays when dealing with this time-critical emergency. If initial approaches to management are unsuccessful, then there is escalation to more extensive treatments which include surgery.
Hypoxic-ischemic injury during labour is a leading cause of perinatal mortality, severe neonatal and longer-term morbidity globally. It leads to brain damage, cerebral palsy and premature death in adult survivors. Hypoxia during labour causes fetal distress which often occurs in women without obvious risk factors. When it happens, emergency operative birth (caesarean section or instrumental vaginal birth) is frequently required. Identification of infants at risk of fetal distress or other adverse outcomes is difficult – the current approach using maternal risk factors and/or clinical assessment of fetal size is poor at detecting small or vulnerable infants. Furthermore, although the association between some risk factors and adverse outcomes is known, the actual predictive utility for a specific risk factor is often relatively poor and more accurate tests are urgently required. There is currently no treatment to prevent fetal hypoxia in labour and we have limited ability to identify vulnerable fetuses before labour commences. Timely, accurate identification of this at-risk cohort with effective intervention represents one of the great challenges in perinatal medicine.
It is now acknowledged that possible negative effects of cancer therapies on future reproductive autonomy are a major concern. In the bioethics literature, some advocate that the child’s right to fertility preservation (FP) should be recognized as a right to an open future.
Research objectives
The aim of this qualitative study is to (1) explore pediatric oncologists’ perceptions regarding barriers and facilitators of OTC in prepubertal girls and (2) analyze the ethical, legal, social, and policy implications of these barriers and facilitators in Canada and France.
Participants and research design
Between November 2022 and August 2023, 10 French and 6 Canadian oncopediatricians took part in semi-directed interviews. The content of the interviews was analyzed using thematic content analysis.
Findings
All the participants emphasized the importance of FP, describing it as a fundamental right and central part of care. However, they identified ethical issues associated with the cost and the uncertainties of ovarian tissue cryopreservation (OTC). The majority thought that OTC should be covered by the public healthcare system to promote equity of access. French oncopediatricians of this study considered OTC to be standard of care, while the majority of Canadian oncopediatricians still considered it experimental, due to the risk of reintroducing malignant cells.
Discussion/conclusions
The results highlight the importance of FP for prepubertal girls as a right, linked to the child’s right to an open future, as described in bioethics literature. According to these findings, the fact that OTC is not systematically discussed, offered, or not covered by the healthcare system constitutes a barrier and fails to protect patients, who may experience future infertility as a consequence of their treatment, thus curtailing their reproductive autonomy.
Labour or parturition is a physiologic process culminating in expulsion of fetus, amniotic fluid, placenta and membranes from the gravid uterus of a pregnant woman involving sequential and integrated changes in the myometrium, decidua and cervix. In a woman with a regular 28-day cycle, labour is said to take place 280 days after the onset of the last menstrual period. However, the length of human gestation varies considerably among healthy pregnancies, even when ovulation is accurately measured in naturally conceiving women. Initiation of labour may be best regarded as a withdrawal of the inhibitory effects of pregnancy on the tissue of the uterus, rather than as an active process mediated by the release of uterine stimulants. Successful labour passes through three stages: the shortening and dilatation of the cervix; descent and birth of the fetus; and the expulsion of the placenta and membranes. Efficient uterine contractions (power), an adequate roomy pelvis (passage) and an appropriate fetal size (passenger) are key factors in this process.
The third stage of labour is defined as the time from the birth to the delivery of the placenta, which in the majority of cases is uneventful but unexpected complications can arise that can lead to significant morbidity and mortality. This chapter describes the normal physiology and how haemostasis is achieved. Expectant (physiological) and active management are described. Details of the dose and route of administration of the uterotonics are discussed. The importance of inspection of the perineum, delayed cord clamping and the correct technique for controlled cord traction is outlined. Pathological conditions such as retained placenta, its causes, management and mismanagement are discussed. The chapter concludes describing the benefits of immediate provision of postpartum long-acting reversible contraception.
Antepartum haemorrhage (APH) is a frequent reason for presentation to maternity units in the antenatal period. APH most commonly arises from placenta previa or placental abruption; placenta previa is typically associated with painless bleeding while in the latter, patients usually present with abdominal pain or uterine contractions. It is important to recognise that bleeding may be concealed especially in placenta abruption and therefore the actual blood loss may supersede that found on clinical examination. It is therefore paramount to accurately assess and interpret the haemodynamic circulation of the patient presenting with APH. The initial management of APH is the same regardless of the underlying cause and includes obtaining intravenous access, sending blood for group and crossmatch, full blood count and a Kleihauer test in Rhesus-negative patients. Scenarios that will require more aggressive resuscitation with intravenous fluids and blood products include massive obstetric haemorrhage more than 1000ml, placental abruption with early-onset coagulopathy and clinical manifestations of hypovolemic shock.
Placenta accreta spectrum (PAS) is a disorder that describes the pathological attachment of the placenta to the myometrium. The continuously rising PAS rates combined with its significant association with a history of caesarean delivery increase the likelihood of encountering women with PAS in obstetric practice. This multifactorial disorder could be associated with serious maternal and fetal morbidity and mortality. Therefore, it is critical to recognise women at risk and provide tailored antenatal care. This chapter discusses the aetiology, impact and known risk factors for PAS. It lists the available diagnostic tools, based on antenatal sonographic and magnetic resonance imaging, and provides recommendations for optimal management of women suspected to have PAS. It summarises the surgical options such as the classical peripartum hysterectomy and compares it to other conservative options using the best available evidence. This chapter provides a comprehensive literature review followed by key learning points for appropriate management.
The fetus receives its oxygen and nutrition from the placenta through the umbilical cord that floats in the amniotic fluid. The placenta receives oxygen and nutrition from the maternal blood and excretes its waste products into the maternal side. Uterine contractions of labour reduce or intermittently cut off the blood perfusion into the retro-placental area, thus reducing the exchange of gases and essential nutrition to the fetus. Contractions may also compress the umbilical cord and prevent or reduce gas and nutrition exchange by reducing or obstructing the flow of blood from and to the placenta.