Hexoprenaline activates potassium channels of human myometrial myocytes.

Hexoprenaline is a beta-adrenergic agent used for tocolysis after the 26th week of pregnancy. The purpose of the present study was to demonstrate the site of action of hexoprenaline on the membrane of single isolated smooth muscle cells. The main action of beta-mimetics on the cell is hyperpolarization of the cellular membrane, i.