BackgroundEating disorders (EDs) are serious conditions predominantly affecting adolescents and young adults (AYAs) and pose a considerable threat to their health and wellbeing. Much of this increased morbidity and mortality is linked to medical compromise, especially cardiovascular abnormalities. Rates of presentation to both community and inpatient medical settings have increased in all age groups following the Covid-19 pandemic and subsequent "lockdowns", with patients presentations being more medically compromised compared to previous years. This has implications for clinicians with regard to the performance of competent cardiovascular assessments and management of findings.AimsThis paper is a practical resource for clinicians working with AYAs in whom EDs may present. It will provide a brief summary of the physiological context in which cardiovascular complications develop, systematically outline these complications and suggest a pragmatic approach to their clinical evaluation.MethodsRelevant literature, guidelines and academic texts were critically reviewed. Conclusions were extracted and verified by a Child and Adolescent Psychiatrist and Adolescent Paediatrician, with suitable expertise in this clinical cohort.ConclusionsThe cardiovascular complications in EDs are primarily linked to malnutrition, and patients presenting with Anorexia Nervosa are most often at greatest risk of structural and functional cardiac abnormalities, including aberrations of heart rate and rhythm, haemodynamic changes and peripheral vascular abnormalities. Other cardiovascular abnormalities are secondary to electrolyte imbalances, as seen in patients with Bulimia Nervosa. More recently defined EDs including Avoidant/Restrictive Food Intake Disorder and Binge Eating Disorder are also likely associated with distinct cardiovascular complications though further research is required to clarify their nature and severity. Most cardiovascular abnormalities are fully reversible with nutritional restoration, and normalisation of eating behaviours, including the cessation of purging, though rare cases are linked to cardiac deaths. A detailed clinical enquiry accompanied by a thorough physical examination is imperative to ensure the medical safety of AYAs with EDs, and should be supported by an electrocardiogram and laboratory investigations. Consideration of cardiovascular issues, along with effective collaboration with acute medical teams allows community clinicians identify those at highest risk and minimise adverse outcomes in this cohort. Plain English summaryEating disorders (EDs) are serious medical conditions predominantly affecting adolescents and young adults (AYAs). They are often associated with considerable threat to the patient's health and wellbeing, with Anorexia Nervosa (AN) having the second highest mortality rate of all mental disorders. The cardiovascular system, which includes the heart and blood vessels, is vulnerable to damage and may contribute to this. There are significant concerns that rates of EDs have been increasing, especially in adolescents. Following the onset of the Covid-19 pandemic and subsequent "lockdowns", there has been an increase in numbers of people of all ages attending community and acute medical settings. Furthermore, presentations are considered to be more medically unwell, with patients presenting with lower weights than previous years. This means that clinicians who might be assessing this group need to be competent in cardiovascular assessments of this cohort. The aim of this paper is to discuss the ways the cardiovascular system is affected in AYAs with various types of EDs, especially AN. The paper aims to provide advice to clinicians on how to assess and cardiovascular problems in this group. This practical summary should be useful to clinicians working in mental health community care who may be less familiar with treating potentially serious physical health problems. The most common cardiovascular issues in young people with low weight or weight loss include slow heart rates, low blood pressure, and problems with sudden changes in blood pressure which can result in fainting. Usually these problems resolve as the patient gains weight. However sometimes more serious changes in heart structure and function may occur and persist causing severe medical issues, like heart failure, which partly explains the high death-rate in AN. For this reason it is important that clinicians know how to spot cardiovascular problems in young people with AN and other EDs and provide them with the best medical care as soon as possible.
