Successful pregnancy and delivery in patients with uncorrected single ventricle: Three new cases and literature review

Anesthetic management for cesarean section in parturient with an uncorrected single ventricle: A case report and literature review

RATIONALE

Patients with a single ventricle, who have not undergone surgery, reportedly have a lower survival rate. Furthermore, multiple pregnancies are rare among these females. We reported a case of anesthesia management of cesarean section in an uncorrected single-ventricular multi-pregnancy woman and review the anesthesia management of the published similar cases.

PATIENT CONCERNS

An uncorrected single ventricular pregnant woman with a cardiac function of New York Heart Association class II, who had experienced one spontaneous abortion and three vaginal deliveries, was scheduled for cesarean section at 37+6 weeks of gestation.

DIAGNOSES

: Echocardiography revealed a complex congenital heart disease in the mother: a single ventricle (the left ventricle is dominant), atrioventricular valve ectopic, double-inlet left ventricle, abnormal location of the great arteries, probably pulmonary stenosis, atrial septal defect, and left-to-right shunt. The fetus was in breech presentation with umbilical cord around the neck.

INTERVENTIONS

Cesarean section was successfully performed under the combined spinal epidural anesthesia with careful monitoring.

OUTCOMES

: Both mother and newborn recovered good and were discharged from the hospital 5 days after surgery without any adverse reactions.

LESSONS

Single ventricular pregnant woman with a cardiac function of New York Heart Association class I-II could tolerate pregnancy and delivery well. Both general and regional anesthesia are applicable to cesarean section in these patients. The principle of anesthesia management is to maintain the appropriate balance between systemic vascular resistance and pulmonary vascular resistance, as well as to maintain preload and cardiac output.

Long-term survival of patients with unoperated single ventricle heart defect: Four case reports and literature review

A single ventricle (SV) heart defect is a rare complex congenital cardiac malformation, accounting for approximately 1%-2% of congenital heart diseases. Surgical intervention is the mainstay treatment for SV patients, although patients who do not receive surgical intervention may also survive. We followed up four adult patients who had SV since birth without surgical intervention and they had a good prognosis. The common characteristics of four long-term SV survivors were investigated by reviewing their medical records and the literature, and the current treatment methods for SV patients were also reviewed. The clinical presentation and long-term prognosis of SV patients without surgical intervention depend on the presence or absence of pulmonary blood flow obstruction, pulmonary vascular resistance, ventricular shape and function, aortic blood flow obstruction, and the atrioventricular valve shape and function. While the Fontan operation has become a common and effective method for SV treatment, long-term outcomes are fraught with morbidity and mortality. In our opinion, such patients with balanced hemodynamic condition could be followed and treated conservatively. Major cardiac surgery which leads to gross hemodynamic adjustments should be avoided. However, additional prospective study will be necessary to verify this assertion. This report aims to improve the prognosis as well as quality of life of SV patients.

Long-term survival without surgical intervention in a patient with a natural history of a single right ventricle: A case report

Single ventricle (SV), a complex cardiac anomaly, if left untreated, is thought to lead to a poor prognosis. Herein, we report the case of a long-term survivor with an unrepaired SV with right ventricle (RV) morphology. A 55-year-old man presented with a SV with RV morphology, with a double outlet, large atrial septal defect, common atrioventricular valve, pulmonary valve stenosis (PS), and dextrocardia. Because the native PS provided adequate restriction of the pulmonary blood flow, he did not develop pulmonary hypertension; however, he had severe cyanosis. In patients with SV and moderate PS, even if the SV has RV morphology, long-term survival may be possible without surgical intervention. <Learning objective: Single ventricle (SV) is a rare and complex congenital heart disease. Outcomes of patients with SV are generally poor; however, some patients can survive long-term without surgical intervention. In particular, it may be possible for patients with SV and moderate pulmonary artery stenosis to enjoy long-term survival without surgical intervention, even if the SV has right ventricular morphology.>.

Pregnancy outcome in women with an uncorrected single ventricle: A single-centre experience from South India

Background

Women with an uncorrected single ventricle heart are at increased risk of adverse maternal and perinatal outcomes.

Methods

We report our experience of managing pregnant women with uncorrected single ventricles, during the time period 2011 to 2017, in a low-resource setting and compare pregnancy outcome with healthy concurrent controls. Outcomes assessed include the mode of delivery, maternal complications, neonatal death and birth weight.

Results

There were six pregnant women with uncorrected single ventricles who had a total of 14 pregnancies. There was one maternal death in a woman with atrioventricular-septal defect and Eisenmenger syndrome. Caesarean section rates and preterm delivery were similar, whereas perinatal loss and low-birth weight rates were higher among women with a single ventricle compared to healthy controls.

Conclusion

Unplanned pregnancies without prenatal counselling/care pose a challenge to physicians especially in low to middle income countries and with the high risk of morbidity/mortality, pregnancy should be discouraged.

Successful pregnancy in a patient with double outlet right ventricle

BACKGROUND

The double outlet right ventricle is uncommon and usually makes patients have haemodynamic and structural complications. Having a hyperdynamic state, such as pregnancy, with volume overload is very risky for a patient with complex CHD (CCHD). The diagnosis in early stages can prevent cardiac complications. The multi-disciplinary assessment of the disease lets patients make choices in treatment and reproductive life.

OBJECTIVE

Present a case of a successful pregnancy in a patient with a rare CCHD.

PARTICIPANT

A pregnant 19-year-old patient with a double outlet right ventricle without haemodynamic or structural complications and no fetal abnormalities.

Results of surgery on adults with functional single ventricle without prior cardiac surgery in childhood

OBJECTIVES

Patients with unoperated functional single ventricle (FSV) rarely survive into adulthood with good functional status and there are few reports about surgical results of adult patients with FSV. This study retrospectively reviews our experience with surgery in adult patients with FSV.

METHODS

From January 2008 to September 2017, 65 adult patients with FSV underwent surgery in our hospital. Twenty underwent Blalock-Taussig shunt or bidirectional Glenn procedures in other hospitals prior, and four were lost to follow-up. Finally, 41 patients were included in this study.

RESULTS

The early postoperative mortality was 7.3% (3/41). Postoperative systemic arterial oxygen saturation (SpO₂ , 83.7% ± 4.8%) was significantly higher than preoperative SpO₂ (77.9% ± 10.1%, P < .01). The mean follow-up time was 3.9 ± 3.1 years (range 1-11 years). There was only one case of late mortality and massive hemoptysis was the cause of death. Right ventricular morphology and severe atrioventricular valve regurgitation (AVVR) were the risk factors of postoperative death for patients with pulmonary stenosis(PS). There was no death case in patients who received Fontan procedure. In a follow-up, we found the grade of AVVR was reduced and the grade of heart function (New York Heart Association) was improved.

CONCLUSIONS

Adult patients with FSV can also undergo surgery. The mortality was acceptable and late results were satisfactory. After surgery, oxygen saturations increased, grades of AVVR decreased and the heart functions improved. Right ventricular morphology and severe AVVR were risk factors for patients with PS.

A single-center experience with 12 consecutive cases of pregnancy among patients with membranous ventricular septal aneurysm

BACKGROUND

Membranous ventricular septal aneurysm (MVSA) is a rare cardiac anomaly that can occur as an isolated entity or being associated with other cardiac malformations. Complications of MVSA include thromboembolism, arrhythmia, rupture, bacterial endocarditis, right ventricular outflow tract obstruction, and atrioventricular valve diseases.The success rate of pregnancy and delivery in patients with MVSA has not been reported in the literature. This study was to assess the clinical implications of this condition from our center's experience.

METHODS

This was a retrospective study for consecutive 12 pregnancies in women with MVSA, who delivered at a tertiary care center in west China between May 2008 and March 2015.

RESULTS

All patients with MVSA delivered via caesarian section. One patient with severe pulmonary arterial hypertension expired from pulmonary infection and heart failure after delivery. One patient terminated pregnancy in the second trimester- necessitated by cardiogenic shock. The other mothers had varying degrees of cardiac morbidity, but survived. Ten of thirteen newborns survived. Congenital heart disease and small-for-gestational-age (SGA) of newborn occurred in two cases (one twin and one single gestation). Two of these babies expired.

CONCLUSIONS

Maternal and neonatal risk appeared associated with heart functional classifications, pulmonary hypertension and histories of cardiac events such as serious cardiac arrhythmia. Accurate diagnosis and care by a multidisciplinary team is recommended for pregnant woman with MVSA.

Survival and outcomes of patients with unoperated single ventricle

OBJECTIVE

Patients with unoperated single ventricle (SV) rarely survive into adulthood with good functional status and may develop Eisenmenger's syndrome (ES). We report outcomes of a 30-year cohort of such patients.

METHODS

Adult patients with unoperated SV were identified by searching the Mayo Clinic medical record from 1984 to 2014. Clinical data were collected and compared between patients with pulmonary stenosis (PS) and ES.

RESULTS

24 patients were identified (median peak-age 56 (31-77) years (11 ES, 13 PS); 22 had left ventricular morphology. 50-year transplant-free survival was 65% (95% CI 43 to 81). Median age at death was 55 years (31-77 years); 15 deaths (62%) occurred before oral pulmonary vasodilators were commercially available. Two-thirds of the cohort demonstrated preserved New York Heart Association functional class and median EF was 60% (49% to 62%). The majority of patients to survive into the fifth decade exhibited anatomy of double-inlet LV (DILV) with PS.

CONCLUSION

Selected patients with unoperated SV with PS and ES can survive with good functional class up to the eighth decade with good medical management. DILV/PS appears to be the ideal phenotype for advanced survival. Our outcomes may be considered when such patients with SV having 'balanced' physiology are evaluated for Fontan palliation. However, additional prospective study will be necessary to verify this assertion.