A comparison of steep and shallow needle trajectories in blind axillary vein puncture.

Background: Previously developed techniques for pacemaker lead introduction usually require some form of image guidance to facilitate the axillary vein puncture process. The existing blind vein puncture methods have not gained widespread acceptance. We aimed to investigate whether our blind vein puncture approach is effective and safe.

Pharmacoinvasive therapy for ST elevation myocardial infarction in China: a pilot study.

Most patients with acute ST-elevation myocardial infarction (STEMI) cannot receive timely primary percutaneous coronary intervention (PCI) because of lack of facilities or delays in patient transfer or catheterization team mobilization. In these patients, early routine post-thrombolysis PCI might be a reasonable, useful strategy. This study investigated feasibility and safety of early PCI after successful half-dose alteplase reperfusion in a Chinese population.

[Effect of ouabain on the aortic rings of guinea pig and its interactions with Ca2+, norepinephrine].

Aim: To observe the effects of ouabain on vascular smooth muscle (VSM) of the guinea pig and its interactions with Ca2+ and norepinephrine (NE).

Methods: Using isolated thoracic aortic ring of the guinea pig, the degrees of contractile activity of drugs were recorded.

Results: Ouabain showed a direct contractile effect in a concentration-dependent manner on thoracic aortic ring of guinea pig.