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NR 283 EXAM 2 QUESTIONS AND ANSWERS WITH COMPLETE
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Practice questions for this set
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thick, middle layer of the heart and is composed of cardiac muscle. ...
responsible for the hearts contraction (heart beat)
Select the correct term
1Myocardium 2Warning signs of a heart attack
Expected findings for left sided heart
3Stable angina
4failure
Don't know?
Terms in this set (142)
Tachycardia abnormally rapid heart rate - above 100
Bradycardia abnormally slow heart rate - under 60
preload volume of blood in ventricles at end of diastole
Afterload resistance against which left ventricle pushes blood out
Systole contraction of heart.....provides increase in pressure to eject blood
Diastole relaxation of heart....required for filling chambers
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, 4/3/25, 5:59 NR 283 Exam 2 |
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When is preload increased? hypervolemia, regurgitation of cardiac valves, heart failure
When is afterload increased? hypertension, vasoconstriction
What increases when afterload increases? increase in cardiac workload
Volume of blood ejected by the heart in one minute:
What is cardiac output?
cardiac output = heart rate x stroke volume
What is stroke volume? Volume of blood pumped out of ventricle- contraction
The heart sound, lubb is due to the _________ closure of AV valves
.
The heart sound, dub is due to the______. closure of semilunar valves.
pulse rate heart rate 60-100 bpm.
dilates (opens) blood vessels, which allows blood to flow more easily
What do vasodilators do?
example: nitroglycerin
-decrease heart rate and blood pressure
What do beta blockers do? -treat HTN & dysrhythmias
-reduce angina attacks
arteriosclerosis hardening of blood vessels
Atherosclerosis plaque build up in the coronary artery causing clots, often leads to MI.
medications administered to increase urine secretion in order to remove excess
Diuretics sodium and/or water.
- treats high blood pressure and congestive heart failure
anticoagulant a drug that prevents clotting of the blood
Transports cholesterol from liver to cells
low-density lipoprotein (LDL)
Major factor contributing to atheroma formation
Transports cholesterol away from the peripheral cells to liver—"good" lipoprotein
High-density lipoprotein (HDL)
Catabolism in liver and excretion
chest pain that results when the heart does not get enough oxygen - recurrent,
angina pectoris
intermittent brief episodes of substernal chest pain
unstable angina prolonged chest pain at rest
Stable angina chest pain that occurs when a person is active or under severe stress
A drug that helps to dilate the coronary vessels that supply the heart muscle with
Nitroglycerin
blood.
Feeling of pressure, heaviness, or burning in chest - especially with increased
activity
Sudden shortness of breath, weakness, fatigue
Nausea, indigestion
Warning signs of a heart attack Anxiety and fear
Pain may occur and if present is
usually Substernal
Crushing
Radiating
Rest, stop activity
Patient seated in upright position
Administration of nitroglycerin—sublingual
Check pulse and respiration.
Emergency Treatment for Angina Administer oxygen, if necessary.
Patient known to have angina
--Second dose of nitroglycerin
Patient without history of angina
--Emergency medical aid
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