Wednesday 15 November 2023

Cardiologic Tracings: AT HEART, part #2, in progress

previous poetic posts (part #1)
atrial fibrillationbypass grafts
dipyridamole (stress)
dobutamine (stress)
ejection fraction (left ventricular)
heart block
Holter monitor

Myocardial ischemia
Torsade de pointes
More to follow

Authors' Note: Jealousy at the flight of birds has apparently resulted in expressions suggesting that human social responsibility is analogous to having one's wings clipped, or flying straight, as here.

Hyperlipemia (also known in America as hyperlipidemia), is a medical condition in which high blood levels of fats (lipids), particularly cholesterol, portend cardiac disease, including deadly heart attacks. Hyperlipemia is one of a number of such asymptomatic risk factors including hypertension and diabetes. Fortunately, change in lifestyle including diet and exercise, and judicious prescription of pharmaceutical drugs, such as statins, can reduce risk.

 Authors' NoteHigh blood pressure, or hypertension, a chronic condition generally of unknown cause, is one of the major cardiovascular risk factors playing a role in the development of adult heart disease. It is also of particular importance in the causation of stroke, accounting for up to 50% of the risk for that condition. 

Authors' Note: There is variability in patients' response to the development of blockages in the coronary arteries. Part of this is due to the gradual development of collateral arteries or side branches, which may mitigate the effect of the obstructions to produce chronic symptoms or acute severe damage to heart muscle. The net impact on flow can be assessed through imaging showing blood flow to heart muscle at rest and stress, with nuclear or other studies of myocardial perfusion (‘gated SPECT’).

Authors' Note: 

Torsade de pointes (tor-sad duh PWAnT), is an Anglo-French medical term for twisting of the peaks, named in 1966 by its French cardiologist discoverer. It is a pattern seen on the ECG (electrocardiogram), with 'twisting' or cycling of the height of the ventricular 'QRS' complexes, and is often associated with factors, inherited or acquired, that widen the 'Q-T' interval on the tracing. This pattern is associated with nasty ventricular arrhythmias and sudden death. If you are lucky, you have survived the initial episode and have correctable factors (e.g. electrolyte disorders, certain pharmaceuticals, etc.)

Flying straight is a casual metaphor associated with performing expected or routine function.

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