Archivos del Instituto de Cardiología de México
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Arch Inst Cardiol Mex · Mar 1995
Case Reports[Adenosine for suppression of paroxysmal supraventricular tachycardia in a newborn infant. First case in Mexico].
We present the case of a 20-day old baby who was admitted with orthodromic supraventricular reentry tachycardia with a heart-rate of 300/minute. Suppression of the arrhythmia was tried with vagal maneuvers and digoxin. ⋯ This is the first pediatric patient treated with adenosine in Mexico. Even though experience elsewhere in this age group is also limited, the properties of adenosine make it a valuable first-choice drug for the control of paroxysmal supraventricular tachycardia.
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Arch Inst Cardiol Mex · Mar 1994
Comparative Study[Diagnosis of thoracic aorta dissection using transesophageal echocardiography].
During a 36 month period there were 20 patients in our hospital with aortic dissection suspected clinically. All of them were examined with transesophageal echocardiography (TEE); 17 were examined with transthoracic echocardiography (TTE); six with computed tomography (CT) and seven with aortography. Twelve patients required surgery: eight with proximal aortic dissection (Type-A), two with distal dissection (Type-B) and two with aortic aneurysm without dissection. ⋯ The ultrasound tests reveal additional information about complications like aortic regurgitation. Transesophageal echocardiography is the best test to examine patients with aortic dissection in our hospital. Computed tomography, aortography and magnetic resonance imaging have indication only to answer specific doubts.
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Arch Inst Cardiol Mex · Jan 1994
Review Case Reports[Intraoperative circulatory collapse due to a coronary spasm following successful coronary revascularization].
Coronary artery spasm is recognized cause of angina and circulatory collapse during the operative and early postoperative period following cardiopulmonary bypass for coronary artery surgery. We present our experience with hemodynamical collapse during cardiopulmonary bypass weaning, which were refractory to treatment with inotropics such as noradrenaline and adrenalin and vasodilators such as nitroglycerin. ⋯ We used sublingual nifedipine, achieving hemodynamical stability and stopping inotropic support and cardiopulmonary bypass. We review the literature about pathophysiologic mechanism and treatment of coronary artery spasm.
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Twelve patients were operated on between February 1992 and June 1993 because aortic valve disease with pulmonary autograft replacement of the aortic valve and reconstruction of the right ventricular outflow tract with a valved tube of autogenous pericardium and bovine prosthetic pericardium valve made at the Instituto Nacional de Cardiología Ignacio Chávez. Aortic and pulmonary annular diameters were taken preoperative in all patients by transthoracic echocardiography. During the surgical procedure, transthoracic echocardiography was done in order to assess valvular function of the pulmonary autograft. ⋯ Post operative evolution was satisfactory in all patients and were discharged after transthoracic echocardiography evaluation. Annular diameters correlated with the trans-surgical annular measurements. We conclude that the use of the pulmonary autograft in selected cases can be done, in order to relieve aortic valve disease, without significant morbi-mortality as compared with single aortic valve replacement.