Sarcopenia evaluation on cardiac magnetic resonance imaging in older adults for outcomes prediction following surgical aortic valve replacement.

BACKGROUND: Sarcopenia refers to a reduction in skeletal muscle mass and strength. Despite the known association between single-slice muscle measurements on lumbar computed tomography and poor outcomes in various clinical settings, studies using thoracic muscle measurements on cardiac magnetic resonance imaging (CMR) have been limited. METHODS: Patients undergoing surgical aortic valve replacement (SAVR) between 2010 and 2020 were included if they were ≥ 50 years of age with preoperative CMR. Manual unilateral pectoralis major and minor skeletal muscle area measurements were made at the carina and normalized for body size by height to obtain skeletal muscle index (SMI). Sarcopenia was defined as the lowest sex-stratified SMI tertile and higher-risk as the highest fiftieth percentile Society of Thoracic Surgeons' (STS) mortality score. RESULTS: A total of 133 patients were included, 35 (26.3%) females. The average age was 64 ± 9 years, with most Caucasian (93.2%). Compared to non-sarcopenic patients, sarcopenic patients were older with lower body mass index. During a median follow-up of 27.3 (7.6-60.4) months, 10 (22.2%) deaths occurred in the sarcopenic group and 8 (9.1%) in the non-sarcopenic group (p = 0.039 by log-rank test). On subgroup analysis (66 patients), higher-risk sarcopenic patients had 10 (37.0%) deaths compared to 8 (20.5%) in higher-risk non-sarcopenic patients (p = 0.011 by log-rank test). CONCLUSIONS: Simple unilateral pectoralis muscle measurements on preoperative CMR can be used as an adjunct to traditional risk scores for predicting mortality post-SAVR.

Assessment of Cardiovascular Risk in Transgender Patients Presenting for Gender-Affirming Care.

BACKGROUND: The transgender population is rapidly growing in the United States and abroad. Transgender men and women are marginalized as a result of their transgender status, with resultant health repercussions. This and other factors such as increased substance use, mental health disorders, violence, and chronic stress may place transgender individuals at higher risk for cardiovascular disease. Additionally, many transgender patients pursue gender-affirming hormone therapy, which has been linked to increased rates of some cardiovascular events such as metabolic syndrome, venous thromboembolism, and stroke. Despite the likelihood of elevated cardiovascular risk in this population, there is a paucity of published data about the cardiovascular risk of this population. METHODS: We present baseline cardiovascular data from a transgender population at a large tertiary care center prior to the initiation of hormone therapy. RESULTS: The described transgender population had much higher rates of mental health disorders and substance use than the general population. Furthermore, there were high rates of undiagnosed and untreated comorbidities, such as hypertension and dyslipidemia, that increase risk for cardiovascular disease. Baseline risk assessment using the ASCVD (Atherosclerotic Cardiovascular Disease) and QRISK3 calculators showed higher-than-expected cardiovascular risk, particularly given the young age of our patient population. CONCLUSIONS: Transgender individuals are at high baseline cardiovascular risk. These data help fill some important knowledge gaps in this patient subgroup, and provide us with much-needed data to help guide our management and counseling of individuals seeking this type of care.