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Premature ventricular contractions may be associated with underlying heart disease, and certain characteristics are therefore elicited routinely: the presence of signs of heart disease or a known history of heart disease (e.g. previous myocardial infarction), as well as heart disease or sudden cardiac death in close relatives.
The onset of symptoms can occasionally be gradual rather than sudden. [8] The cause of pericarditis often remains unknown but is believed to be most often due to a viral infection. [4] [8] Other causes include bacterial infections such as tuberculosis, uremic pericarditis, heart attack, cancer, autoimmune disorders, and chest trauma.
Cardiovascular agents are drugs that affect the rate and intensity of cardiac contraction, blood vessel diameters, blood volume, blood clotting and blood cholesterol levels. [1] They are indicated to treat diseases related to the heart or the vascular system (blood vessels), such as hypertension , hyperlipidemia , coagulation disorders , heart ...
This is complemented by gastro-coronary reflexes [12] whereby the coronary arteries constrict with "functional cardiovascular symptoms" similar to chest-pain on the left side and radiation to the left shoulder, dyspnea, sweating, up to angina pectoris-like attacks with extrasystoles, drop of blood pressure, and tachycardia (high heart rate) or ...
This often causes a slow heart rate and low blood pressure. [1] This can progress to the heart stopping altogether. [2] Some CCBs can also cause a fast heart rate as a result of the low blood pressure. [4] Other symptoms may include nausea, vomiting, sleepiness, and shortness of breath. [2] Symptoms usually occur in the first six hours but with ...
[1] [8] Complications may include backward blood flow in the heart, heart failure – the heart struggling to pump a sufficient amount of blood to meet the body's needs, abnormal electrical conduction in the heart, stroke, and kidney failure. [1] [2] [8] [9] The cause is typically a bacterial infection and less commonly a fungal infection. [1]
The underlying infection can come in the form of a number of different bacteria or viruses. The data seems to point to Staphylococci as the leading bacterial cause of infection leading to ventriculitis being present in about 90% of cases, [4] but generally, what is of more concern is the way the infection entered the ventricles. The brain in ...
The narrowing of blood vessels leads to an increase in peripheral resistance, thereby elevating blood pressure. While vasoconstriction is a normal and essential regulatory mechanism for maintaining blood pressure and redistributing blood flow during various physiological processes, its dysregulation can contribute to pathological conditions.