title: Prediction of hemodynamic conditions by noninvasive arterial tonometry in mitral stenosis.
abstract: To predict the hemodynamic conditions in patients with mitral stenosis (MS), continuous blood pressure responses were monitored noninvasively at the bedside by arterial tonometry during the Valsalva maneuver in 18 MS patients aged 54.2 +/- 9.1 (40 approximately 77) years (6 men, 12 women). Two indices during the Valsalva maneuver (blood pressure decline value at phase III (BPdec) and subsequent blood pressure overshoot value at phase IV (BPov)) were compared with hemodynamic data obtained by the cardiac catheterization method, and the correlations between the changes in these parameters were examined. In these 18 patients, BPdec showed a significant negative correlation with the mean diastolic pressure gradient between the left atrium and left ventricle and showed a significant negative correlation with pulmonary capillary wedge pressure (PCWP) (r = - 0.62, p < 0.01, r = - 0.53, p < 0.05, respectively). Mitral valve area (MVA) showed a significant positive correlation with BPdec (r = + 0.63, p < 0.01). Similarly, BPov showed a significant positive correlation with cardiac output (CO), cardiac index (CI) and MVA (r = + 0.60, p < 0.01, r = + 0.64, p < 0.01, r = + 0.65, p < 0.01, respectively). Thus, continuous monitoring of blood pressure by arterial tonometry during the Valsalva maneuver is useful for predicting the hemodynamic conditions in patients with MS.
authors.affiliation: Department of Cardiology, Jichi Medical School, Tochigi, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Hojo
authors.forename: H
authors.initials: H
authors.lastname: Ebata
authors.forename: H
authors.initials: H
authors.lastname: Sekiguchi
authors.forename: M
authors.initials: M
authors.lastname: Yamasawa
authors.forename: H
authors.initials: H
authors.lastname: Fujikawa
authors.forename: T
authors.initials: T
authors.lastname: Kuroda
authors.forename: U
authors.initials: U
authors.lastname: Ikeda
authors.forename: K
authors.initials: K
authors.lastname: Shimada
mesh_terms: D000328:Adult; D000368:Aged; D001794:Blood Pressure; D001795:Blood Pressure Determination / Q000379:methods*; D006328:Cardiac Catheterization; D002302:Cardiac Output; D004452:Echocardiography; D005260:Female; D006439:Hemodynamics; D006801:Humans; D008297:Male; D008875:Middle Aged; D008946:Mitral Valve Stenosis / Q000000981:diagnostic imaging / Q000503:physiopathology*; D011669:Pulmonary Wedge Pressure; D014636:Valsalva Maneuver