[Induced arterial hypotension as an adjunct to Valsalva's manoeuver in angiocardiographical examination].
D000790:Angiocardiography; D007022:Hypotension; D007023:Hypotension, Controlled; D012129:Respiratory Function Tests; D014636:Valsalva Maneuver
ANGIOCARDIOGRAPHY; HYPOTENSION, CONTROLLED; RESPIRATORY FUNCTION TESTS