Treatment of severe mitral stenosis with percutaneous balloon valvotomy in pregnant patients

Percutaneous Transluminal Mitral Commissurotomy in Pregnant Women with Severe Mitral Stenosis

Background: Mitral stenosis tends to worsen during pregnancy because of the increase in the cardiac output and the heart rate. In nonresponders to medical therapy, percutaneous transluminal mitral commissurotomy (PTMC) may be performed when there is a suitable valvular anatomy. In this study, we aimed to investigate the clinical and fetal outcomes of pregnant women with mitral stenosis who underwent PTMC. Methods: Thirty-one patients undergoing PTMC during pregnancy were enrolled in this study. The mitral valve area (MVA), the transmitral valve mean gradient (MVMG), and the severity of mitral regurgitation were assessed pre- and postprocedurally by transthoracic and transesophageal echocardiography. The radiation time was measured during the procedure. The patients were followed up during pregnancy, and the neonates were monitored for weight, height, the head circumference, the birth Apgar score, and the adverse effects of radiation for at least 12 months. Results: PTMC was successfully performed on 29 (93.5%) patients. No maternal death or pulmonary edema was reported. The mean MVA significantly increased (from 0.73±0.17 cm² to 1.28±0.24 cm²; P<0.001), and the mean MVMG significantly decreased (from 19.62±5.91 mmHg to 8.90±4.73 mmHg; P<0.001) after the procedure. A significant decrease in the systolic pulmonary artery pressure was also detected. Mitral regurgitation did not increase in severity in 16 (51.6%) patients. There was no significant relationship between the Apgar score, weight, height, and the head circumference at birth and at the radiation time. Conclusion: In our series, PTMC during pregnancy was a safe and effective procedure. Lowering the radiation time with low frame-count techniques confers a significant decrease in radiation-related complications.

Fetomaternal outcome among women with mitral stenosis after balloon mitral valvotomy

OBJECTIVE

To compare pregnancy outcomes among patients with non-operated mitral stenosis and those who had balloon mitral valvotomy before pregnancy.

METHODS

In a study at a tertiary-care referral hospital in Kolkata, India, 48 women with mitral stenosis who delivered between July 2007 and June 2008 were separated into 2 groups according to whether they had cardiac surgery before pregnancy. Eighteen women in the test group had balloon mitral valvotomy before pregnancy, whereas 30 women in the control group had no cardiac surgery. Fetomaternal outcomes were compared between the 2 groups.

RESULTS

In the control group, significantly more patients had palpitations (P=0.032) and severe dyspnea (P=0.017) than in the test group. The incidence of preterm labor in the test group (1/18) was lower than that in the control group (10/30) (P=0.035). However, the groups did not differ in mode of delivery, mean birth weight, or neonatal complications.

CONCLUSION

Balloon mitral valvotomy improved maternal symptoms and should be done to prevent maternal morbidity and to reduce the incidence and complications of preterm labor.

Treatment of valvular heart disease during pregnancy for improving maternal and neonatal outcome

BACKGROUND

Valvular heart disease constitutes the majority of all causes of heart disease in pregnancy. In the presence of valvular heart disease, the necessary haemodynamic changes of pregnancy might cause heart failure, leading to severe maternal and fetal morbidity and even mortality. Treatment of valvular heart disease is indicated when patients experience a deterioration of symptoms and in case of a severe valvular lesion. Whether medical therapy or interventional therapy is the optimal treatment for both mother and child is unclear.

OBJECTIVES

To assess effectiveness and adverse effects of the different treatment modalities of valvular heart disease in pregnancy to improve maternal and neonatal outcomes.

SEARCH STRATEGY

We searched the Cochrane Pregnancy and Childbirth Group's Trials Register (31 March 2011), EMBASE (1980 to 23 March 2011) and the reference lists of background review articles.

SELECTION CRITERIA

Randomised controlled trials, quasi-randomised controlled and cluster-randomised controlled trials comparing medical therapy with percutaneous or surgical intervention for the treatment of valvular heart disease in pregnancy.

DATA COLLECTION AND ANALYSIS

We identified no (randomised) controlled trials to assess the effectiveness and adverse effects of the treatment of valvular heart disease in pregnancy.

MAIN RESULTS

There were no randomised controlled trials, quasi-randomised controlled trials or cluster-randomised trials identified from the search strategy.

AUTHORS' CONCLUSIONS

There is insufficient evidence to define the most effective treatment of valvular heart disease in pregnancy to improve maternal and neonatal outcomes.

The role of catheter balloon commissurotomy for severe mitral stenosis in pregnancy

Mitral stenosis is one of the more commonly seen valve lesions encountered in pregnancy. The pathophysiologic implications, management strategies, and a comprehensive review of literature over the past 20 years for optimal timing of catheter balloon commissurotomy during pregnancy are discussed. Mechanical relief of obstruction is indicated for cases of severe symptomatic mitral stenosis in pregnancy refractory to medical therapy. Catheter balloon commissurotomy is the procedure of choice in a select group of these patients with suitable valve morphology.

Anesthetic management for emergency cesarean section in a patient with severe valvular disease and preeclampsia

Wider selection of young patients for prosthetic valve replacement for valvular heart disease has resulted in an increase in number of women with heart disease reaching childbearing age. Such patients presenting in labor for emergency cesarean section require special consideration. We present a report of a parturient who presented at 36 weeks of gestation with severe aortic and mitral stenosis, pulmonary edema and severe preeclampsia. The goals of our anesthetic management included (1) careful airway management (2) maintaining stable hemodynamics (3) optimizing fluid status, and (4) preventing seizures. Issues related to management of patients with severe valvular disease, prosthetic valves and complications due to anticoagulant therapy during pregnancy are discussed.

Long-term outcome of patients undergoing balloon mitral valvotomy in pregnancy

The outcome of 36 patients (mean age 25.8 +/- 4.3 years) who underwent balloon mitral valvuloplasty during pregnancy is described in this report. The procedure was successful in 35 patients (97.2%), with no maternal mortality, and all patients subsequently had symptomatic improvement and uneventful deliveries. The children had normal growth and development at a follow up of 2.8 +/- 3.3 years. Thus, in patients with symptomatic severe mitral stenosis, balloon mitral valvuloplasty is feasible, safe, and effective with good long-term outcomes for both the mother and the fetus.

Balloon mitral valvuloplasty during pregnancy

OBJECTIVES

Balloon mitral valvuloplasty (BMV) has been performed safely during pregnancy with good results. Reports are few on long-term effects of BMV on childhood development.

METHODS

BMV was performed in 40 pregnant women (age 23.4+/-4.8 years) with severe mitral stenosis at 24.2+/-4.6 weeks of gestation.

RESULTS

Mitral valve area increased from 0.82+/-0.34 to 1.9+/-0.4 cm(2) (P<0.001). One patient had pericardial tamponade. Mean fluoroscopy time was 5.5+/-3.8 min. There was no maternal death, no abortion, no intrauterine growth restriction and one stillbirth. All 39 babies were normal at birth. One baby died at 7 months due to pneumonia. On follow up for 36+/-15 months, all 38 babies maintained normal growth and development without any thyroid disease or malignancy.

CONCLUSIONS

During pregnancy BMV is feasible, safe and effective. Maternal and fetal outcomes are excellent. Growth and milestone of development are not affected.

Clinical and echocardiographic assessment of pregnant women with valvular heart diseases—maternal and fetal outcome

The study aimed to compare the outcome of pregnancy in women with valvular heart diseases.

MATERIAL

Two hundred and fifty-nine pregnant women with cardiac diseases, aged 18-42, were observed. Group I-158 patients with mitral valve disease: 30 patients with mitral stenosis; 44 patients with mitral regurgitation, 33 patients with combined mitral valve disease, 51 patients with mitral valve prolapse; Group II-54 patients with aortic valve disease: 32 patients with aortic stenosis, 22 with aortic regurgitation; Group III-47 patients after valve replacement (36 mechanical; 11 homograft valves). Medical history and physical examination, NYHA class assessment, ECG, and echocardiography were performed during consecutive trimesters of pregnancy and after delivery.

RESULTS

Clinical deterioration was observed in 38 patients-in 25 women of Group I, 6 women of Group II, and 7 women of Group III. Newborns outcome : 250 healthy (10 prematures, 12 with intrauterine growth retardation), 6 aborted, 2 stillbirths, 1 neonatal death. Method of delivery : 200 vaginally, 53 cesarean sections.

CONCLUSIONS

(1). Pregnants with critical mitral valve stenosis form a high-risk group of life-threatening complications. (2) In women with severe aortic stenosis, pregnancy could lead to sudden clinical status deterioration. (3) Cardiac complications can be expected in patients with left ventricular enlargement and its depressed function. (4) Key factors influencing successful course of pregnancy and labour in patients with prosthetic valves: adequate left ventricular function, properly functioning valves, and effective anticoagulation.

Mitral valve surgery and maternal and fetal outcome in valvular heart disease

OBJECTIVES

To compare maternal and fetal outcomes in patients with non-operated valvular heart disease and patients who had surgery before or during pregnancy.

METHODS

The 308 women with valvular heart disease who delivered in this hospital in the last 8 years were divided into three groups. The 218 (70.7%) women in group 1 had no surgical intervention; the 42 (13.6%) women in group 2 underwent balloon mitral valvotomy during pregnancy; and the 48 (15.5%) women in group 3 had surgical intervention before pregnancy (35 had balloon mitral valvotomy, eight had mitral valve replacement, and five had mitral valve repair). Maternal and fetal outcomes were compared for these three groups.

RESULTS

The antenatal events differed significantly: 175 (80.3%), 40 (94.2%), and 46 (95.8%) patients in groups 1, 2 and 3, respectively, had uneventful pregnancies. In group 1, 14 (6.4%) patients had congestive heart failure (P>0.05) and 24 (11%) patients had cardiac arrhythmias, which was statistically significant. The rate of preterm deliveries did not differ significantly among the three groups. The groups did not differ in mean birth weight, mode of delivery, low birth weight, Apgar scores less than 8, stillbirths, neonatal death, or congenital anomalies.

CONCLUSIONS

Mitral valve surgery before or during pregnancy did not significantly improve maternal and fetal outcomes but decreased adverse events such as congestive heart failure and cardiac arrhythmias. It should be therefore performed only in selected cases.

Percutaneous balloon mitral commissurotomy during pregnancy

Percutaneous balloon mitral commissurotomy was performed in 16 pregnant women aged 23 +/- 3 years (range, 16-39 years) who had severe mitral stenosis at pregnancies of mean gestational age 25 +/- 6 weeks. Ten patients were in New York Heart Association functional class III, and six patients were in functional class IV at the time of the procedure. All patients were symptomatic despite maximal medical therapy. The procedure was performed with the Inoue balloon. The mitral valve area increased from 0.9 +/- 0.3 to 1.8 +/- 0.3 cm2 (p < 0.05). The mitral valve pressure gradient decreased from 23 +/- 7 to 6 +/- 3 mm Hg (p < 0.05). The left atrial pressure decreased from 28 +/- 8 to 10 +/- 4 mm Hg (p < 0.05). The pulmonary artery pressure decreased from 59 +/- 18 to 33 +/- 12 mm Hg (p < 0.05). Fourteen patients continued their pregnancies to mean gestational age 37 +/- 2 weeks; all infants were healthy. Two patients had premature deliveries more than 1 month after the procedure due to obstetrical reasons. The two newborns died at day 2 of respiratory distress. Eleven women had vaginal deliveries and five had cesarean sections. All clinically improved to New York Heart Association functional class I or II. Excessive blood loss from the femoral puncture site that required transfusion occurred in one patient. Mitral regurgitation increased one degree in four patients, from 0 to 1+. Patients were observed until delivery. None had restenosis. The degree of mitral regurgitation remained unchanged. Percutaneous balloon mitral commissurotomy can be performed safely during pregnancy. It will effectively improve hemodynamics and symptoms in pregnant patients who have severe mitral stenosis and persistent congestive heart failure symptoms despite conventional medical treatment. There are no immediate detrimental effects of radiation on the fetus. Risks are lower than previously reported when surgical commissurotomy was performed.