[Study of the cardiac function using Valsava's maneuver].
D000328:Adult; D000367:Age Factors; D000368:Aged; D001835:Body Weight; D002302:Cardiac Output; D004562:Electrocardiography; D006801:Humans; D008875:Middle Aged; D014636:Valsalva Maneuver
Estudio de la función cardíaca mediante la maiobra de Valsalva.