Longitudinal echocardiographic parameters before and after pacemaker placement in congenital complete heart block.

Background: Congenital complete heart block (CCHB) is seen in 1:15,000-1:20,000 live births, with risk of left ventricular (LV) dysfunction or dilated cardiomyopathy in 7%-23% of subjects.

Objective: The purpose of this study was to investigate serial changes in LV size and systolic function in paced CCHB subjects to examine the effect of time from pacemaker on echocardiographic parameters.

Methods: Single-center retrospective cohort analysis of paced CCHB subjects was performed.

Incidence of morbidity and mortality in a cohort of congenital complete heart block patients followed over 40 years.

Background: Congenital complete heart block (CCHB) is seen in 1:15,000-20,000 births and commonly requires pacemaker placement by young adulthood. There is limited understanding of cardiac morbidity and mortality.

Objective: The purpose of this study was to determine the long-term incidence of cardiac morbidity and mortality in subjects with CCHB and identify associated risk factors.

End-Organ Function and Exercise Performance in Patients With Fontan Circulation: What Characterizes the High Performers?

Background The physiologic hallmarks of the Fontan circulation-chronically elevated central venous pressures and low cardiac output-have significant effects not only on cardiovascular status but also impact other organ systems. Exercise capacity is limited in many and declines with age, accelerating in adolescence, but with wide variability. We explore the relationship between exercise performance and end-organ function in outpatient subjects with a Fontan circulation.

Risk factors for development of obesity in an ethnically diverse CHD population.

Objectives: Previous cross-sectional studies have demonstrated obesity rates in children with CHD and the general paediatric population. We reviewed longitudinal data to identify factors predisposing to the development of obesity in children, hypothesising that age may be an important risk factor for body mass index growth.Study designRetrospective electronic health records were reviewed in all 5-20-year-old CHD patients seen between 2011 and 2015, and in age-, sex-, and race/ethnicity-matched controls.