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.
denotes high blood pressure from an unidentified cause; also called essential hypertension rebound hypertension blood pressure that is controlled with medication and becomes uncontrolled (abnormally high) with the abrupt discontinuation of medication secondary hypertension high blood pressure from an identified cause, such as renal disease