Aarthi Sabanayagam

Observations on obesity patterns in tetralogy of Fallot patients from childhood to adulthood

Obesity is increasingly prevalent, and abnormal body mass index is a risk factor for cardiovascular disease. There are limited data published regarding body mass index and CHD. We tested the hypothesis that body mass index and obesity prevalence are increasing in patients with tetralogy of Fallot over time by analysing time since surgery, age, height, weight, and body mass index among tetralogy of Fallot patients and demographic data from age-matched controls. NYHA class and left ventricular ejection fraction were analysed in adults. Body mass index was categorised into normal, overweight, and obese in this single-centre, retrospective chart review. Data were collected from 137 tetralogy of Fallot patients (71 men:66 women), of whom 40 had body mass index >25 kg/m2. Tetralogy of Fallot patients aged <6 years had lower body mass index (15.9 versus 17.1; p=0.042) until 16-20 years of age (27.4 versus 25.4; p=0.43). For adult tetralogy of Fallot patients, the mean body mass index was 26.5 but not statistically significantly different from the control cohort. Obese adult patients had significantly higher average NYHA class compared with those of normal weight (p=0.03), but no differences in left ventricular ejection fraction by echocardiography (p=0.55) or cardiac MRI (p=0.26) were noted. Lower body mass index was observed initially in tetralogy of Fallot patients, but by late adolescence no significant difference was observed. As adults, tetralogy of Fallot patients with higher body mass index had increased NYHA class but similar left ventricular ejection fraction.

Attitudes and perceptions of pregnant women with CHD: results of a single-site survey

Introduction CHD occurs in about 1% of the United States population, and is now the most common cardiac condition affecting women during pregnancy. METHODS An anonymous, single-site, cross-sectional, 50-question survey was performed at a national Adult Congenital Heart Disease conference to assess the level of knowledge, attitudes, and perceptions regarding cardiac care during pregnancy in women with CHD. RESULTS A total of 77 women completed the survey. Among them, 50% (n=39) had moderate and 38% (n=29) had severely complex disease; 30% (n=23) of women were told that pregnancy was contraindicated given their underlying cardiac condition. Almost two-thirds (n=50) report being categorised as high risk for adverse cardiovascular events. During pregnancy, 84% (n=65) preferred their cardiologist to have trained in adult CHD, 44% (n=34) were satisfied with adult cardiologists, and 36% (n=28) with paediatric cardiologists. Only 48% (n=37) were aware that a fetal echocardiogram was indicated. Only 35% (n=27) discussed modes of delivery with their providers, and 70% (n=54) preferred their prenatal cardiology visits at an adult hospital. Up to 85% (n=64) of them had discussed contraception with their cardiologists, and 72% (n=56) felt they needed high-risk maternal-fetal medicine to be involved with their care. CONCLUSIONS Despite seeking medical care, these pregnant women did not have a full understanding of their condition and their cardiovascular risk during pregnancy. On the basis of these results, further efforts are needed to improve the knowledge, attitudes, and perceptions of women with CHD in relation to their cardiac and obstetric management during pregnancy.

MORTALITY IN PREGNANT WOMEN WITH CONGENITAL HEART DISEASE: A SUBANALYSIS OF THE CALIFORNIA PREGNANCY-ASSOCIATED MORTALITY REVIEW

Background: Heart disease accounts for ∼10% of mortality and morbidity during pregnancy. Congenital heart disease (CHD) is the most common cardiac condition affecting women during pregnancy. Despite improvements in survival and quality of life for patients with CHD, pregnancy remains high risk or

PREVALENCE OF ELEVATED BODY MASS INDEX AND ITS ASSOCIATION WITH CLINICAL FEATURES IN ADULT FONTAN PATIENTS

Background: Elevated body mass index (BMI) is increasingly affecting adults with congenital heart disease. The effect of an increased BMI with respect to clinical variables has not been evaluated in adult Fontan patients. Methods: Retrospective review of medical records from 2 tertiary academic

Cardiopulmonary exercise testing in the evaluation of liver disease in adults who have had the Fontan operation

BACKGROUND Liver disease (LD) is a long-term complication in patients with a single ventricle who have had the Fontan operation. A decline in cardiopulmonary exercise testing (CPET) variables is associated with increased risk of hospitalization, but its association with LD is unknown. AIM To determine the association between CPET variables and LD in adults who have had the Fontan operation. METHODS We retrospectively reviewed the medical records from two tertiary institutions. RESULTS We identified 114 adults (≥18 years; mean 30.9±7.4 years) who had undergone the Fontan operation: 56% were women; 63% had total cavopulmonary connection; 66% had New York Heart Association (NYHA) class I status; 42% had arrhythmias; 22% had systemic right ventricle; and 35% had ventricular dysfunction. Of 81 patients with liver-imaging data, 41% had LD (i.e. imaging evidence of cirrhosis, with or without portal hypertension, splenomegaly or varices). There were no differences in clinical or echocardiographic variables between those with and without LD. Among the 58 patients with CPET data, mean peak oxygen consumption (VO2) was 18.6±5.7mL/kg/min, per-cent-predicted peak VO2 was 53.9±15.5%, peak oxygen pulse was 9.3±2.9mL/beat and per-cent-predicted peak oxygen pulse was 82.6±21.5%. Of the 44 patients with liver and CPET data, each standard deviation decrease in per-cent-predicted peak VO2 (16%) and per-cent-predicted peak oxygen pulse (22%) was associated with a 2.3-fold increase in the odds of LD, after adjusting for NYHA, institution and Fontan type (P=0.04). Similarly, each standard deviation decrease in per-cent-predicted peak VO2 and oxygen pulse was associated with an estimated 5.9-year and 4.9-year earlier onset of LD, respectively (P>0.05). CONCLUSIONS Decline in per-cent-predicted peak VO2 and oxygen pulse was associated with increased odds of LD in adults who had undergone the Fontan operation. Our study supports more rapid hepatic evaluation among patients with abnormal or worsening CPET variables.