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Sophie Samyn, Marielle Morissens, Ahmed Sanoussi and José Castro Rodriguez

Abstract

Reinterventions for surgery complications in adult patients with complex congenital heart disease are often difficult and have a high operative risk. If anatomically possible, a percutaneous approach is an alternative to surgery. We report the case of a 36 year-old patient who underwent surgery for a double outlet right ventricle with transposition of the great arteries and pulmonary stenosis. On the days following the surgery, the patient was hemodynamically unstable due to a stenosis of the intraventricular Dacron conduit between the left ventricle and the aorta. Because of the fragility of the patient, additional surgery was not possible and a percutaneous approach was preferred. A Cheatham Platinum stent mounted on a balloon-in-balloon catheter was implanted with success in the stenotic intraventricular Dacron conduit.

Open access

Ilaria Botta, Jacques Devriendt, Jose Castro Rodriguez, Marielle Morissens, Andrew Carling, Leonel Barreto Gutierrez, Thierry Preseau, David De Bels, Patrick M. Honore and Sebastien Redant

Abstract

We present a case of a 21-year-old Caucasian woman at 27 weeks of pregnancy who was admitted to the obstetric department for pre-term labor. She received 10 mg of nifedipine 4 times in 1 h, according to the internal protocol. Shortly after, she brutally deteriorated with pulmonary edema and hypoxemia requiring transfer to the intensive care unit (ICU) for mechanical ventilation. She finally improved and was successfully extubated after undergoing a percutaneous valvuloplasty of the mitral valve. This case illustrates a severe cardiogenic shock after administration of nifedipine for premature labor in a context of unknown rheumatic mitral stenosis. Nifedipine induces a reflex tachycardia that reduces the diastolic period and thereby precipitates pulmonary edema in case of mitral stenosis. This case emphasizes the fact that this drug may be severely harmful and should never be used before a careful physical examination and echocardiography if valvular heart disease is suspected.