14 Heart flashcards.doc

Slows it down to give the atria a chance to finish

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Slows it down to give the atria a chance to finish contracting. 25. What is the name of the condition when there is a problem with the SA or AV node which causes an irregular heartbeat? ARRHYTHMIA Treatment is medicines or a pacemaker.
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Heart Flashcards 26. What is the treatment? 27. What condition means a heart beat that is too fast? 28. What condition means a heart beat that is too slow? Too fast: tachycardia Too slow: bradycardia 29. What condition is when the ventricles are unable to pump blood efficiently due to rapid, random contraction of cardiac muscle fibers. The muscle doesn’t contract as a unit. VENTRICULAR FIBRILLATION 30. What is the term for PAIN caused by deficient blood delivery to the heart wall? Angina 31. What is ISCHEMIA? 32. What is the proper term for a heart attack? 33. Does death occur within a few minutes of a heart attack in 50% of the cases? ISCHEMIA: Lack of blood/ oxygen Myocardial infarction No, death takes about 2 hours in 50% of the cases. 34. What are the purposes of the following medicines: 35. t-PA 36. Beta blockers 37. Aspirin 38. Nitroglycerine t-PA (dissolves blood clots) Beta-blockers (slows heart rate) Aspirin (prevents blood clots) Nitroglycerine (dilates coronary arteries) 39. What is the difference between arteriosclerosis and atherosclerosis? Arteriosclerosis is hardening of the arteries, caused by a build-up of calcium deposits in the artery wall; artery cannot expand with blood surges. Tends to be hereditary. Atherosclerosis is caused by a build-up of fat in the arteries, from eating fatty foods - narrowing of artery -- Spasm shut or blood clot. Both cause High Blood Pressure, but only atherosclerosis causes myocardial infarctions 40. What is the difference between an embolism and a thrombis? A thrombis is a blood clot. An embolism is a piece of blood or fat clot that has broken off and travels in the bloodstream.
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  • Fall '08
  • Harrison,C

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