Cardiac Complications during Pregnancy Related to Parity in Women with Congenital Heart Disease

Objective: To describe the frequency of cardiac complications during pregnancy related to parity in women with congenital heart defects. Methods: A retrospective tertiary single-center study at the Adult Congenital Heart Disease Centre that followed 307 women with congenital heart disease during the years 1997–2015 in Gothenburg, Sweden. Maternal cardiac complications were noted for each pregnancy using medical and obstetric records. The CARPREG I and modified WHO (mWHO) risk classifications were used. Twin pregnancies, miscarriages before gestational week 13, and pregnancy terminations were excluded. Results: Five hundred seventy-one deliveries and 9 late miscarriages were analyzed. The mean parity was 1.74 per woman (range 1–8). Eighty-four (14.6%) maternal cardiac complications were experienced; arrhythmia (5.7%) and heart failure (4.4%) being the most prevalent, and there was 1 maternal death. Heart failure occurred during the first pregnancy in 12 women (3.9%), in the second pregnancy in 8 women (4.3%), and in the third pregnancy in 4 women (7.7%). CARPREG I and mWHO scores were associated with an increased risk of having a cardiac complication, while parity per se was not associated. The OR for having a maternally uneventful second pregnancy if the first pregnancy was without cardiac complications was 5.47 (95% CI 1.76–16.94) after controlling for CARPREG I and mWHO scores. Conclusion: The risk of severe maternal cardiac complications during pregnancy in women with congenital heart disease is low. In this largest analysis to date with a focus on parity in 307 women, the risk classification predicts the maternal outcome more than parity per se. If the first pregnancy is uneventful, the OR is 5.5 for an uneventful second pregnancy if CARPREG I and mWHO scores remain unchanged.

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Abstract 19314: Impact of Body Mass Index on Clinical Outcomes in Complex Adult Congenital Heart Disease

Circulation ◽

10.1161/circ.130.suppl_2.19314 ◽

2014 ◽

Vol 130 (suppl_2) ◽

Author(s):

Norihisa Toh ◽

Ines Uribe Morales ◽

Zakariya Albinmousa ◽

Tariq Saifullah ◽

Rachael Hatton ◽

...

Keyword(s):

Heart Failure ◽

Body Mass Index ◽

Congenital Heart Disease ◽

Heart Disease ◽

Congenital Heart ◽

Adult Congenital Heart Disease ◽

Cardiac Events ◽

Increased Risk ◽

Adult Congenital

Background: Obesity can adversely affect most organ systems and increases the risk of comorbidities likely to be of consequence for patients with complex adult congenital heart disease (ACHD). Conversely, several studies have demonstrated that low body mass index (BMI) is a risk factor for heart failure and adverse outcomes after cardiac surgery. However, there are currently no data regarding the impact of BMI in ACHD. Methods: We examined the charts of 87 randomly selected, complex ACHD patients whose first visit to our institution was at 18-22 years old. Patients were categorized according to BMI at initial visit: underweight (BMI < 18.5 kg/m 2 ), normal (BMI 18.5 - 24.9 kg/m 2 ), overweight/obese (BMI ≥ 25 kg/m 2 ). Events occurring during follow-up were recorded. Data was censured on 1/1/2014. Cardiac events were defined as a composite of cardiac death, heart transplantation or admission for heart failure. Results: The cohort included patients with the following diagnoses: tetralogy of Fallot n=31, Mustard n=28, Fontan n=17, ccTGA n=9 and aortic coarctation n=2. The median (IQR) duration of follow-up was 8.7 (4.2 - 1.8) years. See table for distribution and outcomes by BMI category. Cardiac events occurred in 17/87 patients. After adjustment for age, sex, and underlying disease, the underweight group had increased risk of cardiac events (HR=12.9, 95% CI: 2.8-61.5, p < 0.05). Kaplan-Meier curves demonstrate the poorer prognosis of underweight patients (Figure). Conclusions: Underweight was associated with increased risk of late cardiac events in ACHD patients. We were unable to demonstrate significant overweight/obesity impact.

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