RADIOGRAPHIC evidence of right ventricular enlargement with bulging of the main pulmonary artery13 and electroveetoreardiographic signs of right ventricular preponderance2' 4-6 are common findings in people born and living at high altitudes. Anatomically, the existence of right ventricular hypertrophy has been demonstrated both in adults7-9 and children.10 Recently, hemodynamic studies have dis...

Right ventricular (RV) function can be seriously compromised due to either left ventricular (LV) failure or severe pulmonary hypertension (PH) and pulmonary vascular dysfunction of extra-cardiac origin, especially in critically ill patients, and can be associated with worse prognosis. Echocardiography in the Intensive Care Unit (ICU) can provide significant information to the caregivers, when c...

BACKGROUND Correction of tetralogy of Fallot often leads to pulmonary regurgitation, sometimes warranting pulmonary valve replacement, for which indications and timing to achieve optimal results are not yet clear. This retrospective study describes follow-up and reinterventions in our tetralogy of Fallot population. METHODS Review of all consecutive patients operated on for tetralogy of Fallo...

Chest pain like angina pectoris has been described in patients with pulmonary hypertension and cor pulmonale but its origin is obscure. In this article 5 patients are reported with isolated pulmonic stenosis and chest pain. On the basis of the clinical, electrocardiographic, hemodynamic, and pathologic findings the authors conclude that the chest pain is caused by ischemia of the right ventricu...

A patient with tetralogy of Fallot who developed cyanosis and tachypnea during spontaneous attacks of paroxysmal atrial tachycardia had an increase in right-to-left shunting with a fall in arterial oxygen saturation from 96 to 43%. Duplication of the fast heart rate by atropine and atrial pacing reproduced these hemodynamic changes, while slowing the rate with propranolol reversed this effect. ...

A patient with tetralogy of Fallot who developed cyanosis and tachypnea during spontaneous attacks of paroxysmal atrial tachycardia had an increase in right-to-left shunting with a fall in arterial oxygen saturation from 96 to 43%. Duplication of the fast heart rate by atropine and atrial pacing reproduced these hemodynamic changes, while slowing the rate with propranolol reversed this effect. ...

THERE HAS BEEN inereasinog interest in the physiologic rather than the anatomic disturbances in tetralogy of Fallot." 2 Accordingly, the degree of pulmonary stenosis and the size of the ventricular septal defect are the factors of physiologic importance in this congenital anomaly. The dextroposition of the aorta is functional due to the high ventricular septal defect, and the right ventricular ...

Six of 14 patients with hemodynamically proven subaortic stenosis (SAS) showed electrocardiographic patterns consistent with myocardial infarction. Analysis of the 0.02-sec horizontal plane vector allowed discrimination between true myocardial infarction and SAS. In SAS this vector was shifted anteriorly and to the right consistent with septal hypertrophy and increased left-to-right early septa...

To evaluate the difference in pulmonary gas exchange in patients with and without right ventricular infarction, 147 consecutive patients with their first inferior wall Q-wave acute myocardial infarction were studied. Thirty-nine patients (group 1) had electrocardiographic evidence of right ventricular infarction and it was absent in 108 patients (group 2). A significantly wider alveolar arteria...