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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.
If PVCs are suppressed by exercise, this is an encouraging finding. [citation needed] On electrocardiography (ECG or Holter) premature ventricular contractions have a specific appearance of the QRS complexes and T waves, which are different from normal readings. By definition, a PVC occurs earlier than the regular normally conducted beat.
The cause of constrictive pericarditis in the developing world are idiopathic in origin, though likely infectious in nature. In regions where tuberculosis is common, it is the cause in a large portion of cases. [3] Causes of constrictive pericarditis include: Tuberculosis [4] Incomplete drainage of purulent pericarditis [4] Fungal and parasitic ...
Find out what it is and how to protect yourself, according to cardiologists.
A pericardial effusion with enough pressure to adversely affect heart function is called cardiac tamponade. [1] Pericardial effusions can cause cardiac tamponade in acute settings with fluid as little as 150mL. In chronic settings, however, fluid can accumulate anywhere up to 2L before an effusion causes cardiac tamponade.
It is a form of cardiac arrhythmia in which ectopic foci within either ventricular or atrial myocardium, or from finer branches of the electric transduction system, cause additional beats of the heart. Some medications may worsen the phenomenon. [citation needed] Ectopic beats are considered normal and are not indicative of cardiac pathology.
Common causes of cardiac tamponade include cancer, kidney failure, chest trauma, myocardial infarction, and pericarditis. [2] [5] Other causes include connective tissues diseases, hypothyroidism, aortic rupture, autoimmune disease, and complications of cardiac surgery. [2] [6] In Africa, tuberculosis is a relatively common cause. [1]
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