title: Simultaneous left ventricular and ascending aortic pressure measurements via single artery access for assessment of aortic stenosis.
abstract: In order to determine the reliability of a single arterial access technique for hemodynamic assessment of aortic stenosis, data obtained from this method was compared with that from dual arterial access in 13 patients. A 59 cm long, 8 Fr. Mullins Transseptal Sheath (MTS) was placed in the ascending aorta (AA) and a 5 Fr. pigtail catheter advanced through the MTS (using a hemostatic "Y" adapter) into the left ventricle for simultaneous pressure recordings. Another 5 Fr. pigtail catheter (PTC) was advanced in the AA from the contralateral femoral artery. Peak pressures, AA pressure-tracing characteristics, mean gradients, and the aortic valve area using tracings from the MTS and the PTC were compared. Peak pressures 120 +/- 8 vs. 119 +/- 8 mmHg (r = .998), "T" time .16 +/- .01 vs. .15 +/- .01 sec. (r = .913), "U" time .36 +/- .02 vs. .36 +/- .02 sec. (r = .983), mean gradients 38.4 +/- 6.1 vs. 39.6 +/- 6.9 mmHg (r = .990) and the AV area .78 +/- .08 vs. 79 +/- .08 cm2 (r = .994) were similar. Therefore, this single arterial technique provides data comparable to the traditional dual access system for hemodynamic assessment of aortic stenosis.
authors.affiliation: Department of Medicine, Medical College of Virginia, Richmond 23298.
authors.forename: A
authors.initials: A
authors.lastname: Nath
authors.forename: G W
authors.initials: GW
authors.lastname: Vetrovec
authors.forename: J
authors.initials: J
authors.lastname: Mukharji
authors.forename: S
authors.initials: S
authors.lastname: Cole
authors.forename: S A
authors.initials: SA
authors.lastname: Lewis
authors.forename: G
authors.initials: G
authors.lastname: DiSciascio
authors.forename: M J
authors.initials: MJ
authors.lastname: Cowley
mesh_terms: D000368:Aged; D001011:Aorta / Q000502:physiology; D001024:Aortic Valve Stenosis / Q000175:diagnosis*; D006328:Cardiac Catheterization; D002406:Catheterization, Peripheral; D005260:Female; D006801:Humans; D008297:Male; D011312:Pressure