Title : Antiadrenergic effect of M-cholinoceptor stimulation on human ventricular contractility in vivo.

Pub. Date : 1992 Dec

PMID : 1336317






4 Functional Relationships(s)
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1 The inotropic response induced by isoproterenol (isoprenaline, 20 ng.kg-1 x min-1), measured by m-mode echocardiography as the increase of fractional shortening in seven healthy subjects, was reduced from 17.1 +/- 4.3 to 9.1 +/- 3.9% (P < 0.01) by M-cholinoceptor stimulation using intravenous injection of 3.6 micrograms/kg carbachol. Isoproterenol CD59 molecule (CD59 blood group) Homo sapiens
2 The inotropic response induced by isoproterenol (isoprenaline, 20 ng.kg-1 x min-1), measured by m-mode echocardiography as the increase of fractional shortening in seven healthy subjects, was reduced from 17.1 +/- 4.3 to 9.1 +/- 3.9% (P < 0.01) by M-cholinoceptor stimulation using intravenous injection of 3.6 micrograms/kg carbachol. Isoproterenol CD59 molecule (CD59 blood group) Homo sapiens
3 However, the inotropic response of increasing doses of isoprenaline (5-20 ng.kg-1 x min-1) did not differ in 13 healthy subjects without and after M-cholinoceptor blockade (atropine, 0.015 mg/kg i.v. Isoproterenol CD59 molecule (CD59 blood group) Homo sapiens
4 ); the increase of fractional shortening amounted to 17.4 +/- 4.0 vs. 19.5 +/- 4.8% (NS) in response to 20 ng.kg-1 x min-1 isoprenaline. Isoproterenol CD59 molecule (CD59 blood group) Homo sapiens