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2. Myocarditis - Wikipedia

   en.wikipedia.org/wiki/Myocarditis

   During COVID-19, the other indirect mechanisms thought to contribute to myocarditis include: oxygen supply-demand mismatch to the heart muscle leading to myocardial (heart muscle) injury; microvascular thrombi, or blood clots in the small blood vessels of the heart causing injury; the systemic hyperinflammatory state in Covid-19 leading to ...

3. Myocardial contractility - Wikipedia

   en.wikipedia.org/wiki/Myocardial_contractility

   An increase in sympathetic stimulation to the heart increases contractility and heart rate. An increase in contractility tends to increase stroke volume and thus a secondary increase in preload. An increase in preload results in an increased force of contraction by Starling's law of the heart; this does not require a change in contractility.

4. Afterload - Wikipedia

   en.wikipedia.org/wiki/Afterload

   Afterload is the pressure that the heart must work against to eject blood during systole (ventricular contraction). Afterload is proportional to the average arterial pressure. [ 1 ] As aortic and pulmonary pressures increase, the afterload increases on the left and right ventricles respectively.

5. Coronary circulation - Wikipedia

   en.wikipedia.org/wiki/Coronary_circulation

   Interruptions of coronary circulation quickly cause heart attacks (myocardial infarctions), in which the heart muscle is damaged by oxygen starvation. Such interruptions are usually caused by coronary ischemia linked to coronary artery disease , and sometimes to embolism from other causes like obstruction in blood flow through vessels.

6. Cardiac output - Wikipedia

   en.wikipedia.org/wiki/Cardiac_output

   Major factors influencing cardiac output – heart rate and stroke volume, both of which are variable. [1]In cardiac physiology, cardiac output (CO), also known as heart output and often denoted by the symbols , ˙, or ˙, [2] is the volumetric flow rate of the heart's pumping output: that is, the volume of blood being pumped by a single ventricle of the heart, per unit time (usually measured ...

7. Carditis - Wikipedia

   en.wikipedia.org/wiki/Carditis

   Carditis (pl. carditides) is the inflammation of the heart. [1] It is usually studied and treated by specifying it as: [citation needed] Pericarditis is the inflammation of the pericardium; Myocarditis is the inflammation of the heart muscle; Endocarditis is the inflammation of the endocardium