Pneumococcal infections are caused by Streptococcus pneumoniae, a gram-positive, catalase-negative organism commonly referred to as pneumococcus.
Blood pressure is a measure of the changing fluid pressure within the circulatory system. It varies. from a peak pressure produced by contraction of the left ventricle, to a low pressure, which is. maintained by closure of the aortic valve and elastic recoil of the arterial system. The peak.
Human or salmon calcitonin has no significant effects on blood pressure (18) but salmon calcitonin induces negative chronotropic and negative inotropic effects on isolated dog atrium (19), suggesting that it has a possible role in the regulation of myocardial contractile force and rate.