Paramedic Cardiology Exam 1 Questions
And Answers |Latest 2025 | Guaranteed Pass.
The right side of the heart is a - Answer✔Low pressure system (pulmonary circulation)
The left side of the heart is a - Answer✔High pressure system (systemic circulation)
Left coronary artery supplies: - Answer✔Left ventricle, inter ventricular septum
Right Coronary Artery supplies - Answer✔Right atrium
Right ventricle
Part of left ventricle
Portions of the conduction system
Stimulation of the sympathetic nerves - Answer✔Strengthens force of contraction
Increases heart rate
If patient is unresponsive and possibly in cardiac arrest what should you use instead of ABCDE -
Answer✔CABDE
Pulse deficit - Answer✔difference between the apical and peripheral pulse rates
Pulsus Paradoxus - Answer✔When the systolic BP falls more than 10mm hg with inspiration
Pulsus alternans - Answer✔sign of sever ventricular failure (beat-beat difference)
S1 occurs when - Answer✔When the tricuspid and mitral valves close
Decreased S1 sounds can indicate - Answer✔Fibrotic or calcified mitral valve
Obesity
Emphysema
Cardiac tamponade
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S2 occurs when - Answer✔When the pulmonary and aortic valves close
S2 is louder when - Answer✔chronic hypertension or pulmonary hypertension
S3 - Answer✔is caused by ventricular wall vibrations indicating heart failure
S4 - Answer✔Heard just before S1 and indicates turbulent filling of stiff ventricle in
hypertrophy. Possible MI
Heart murmur - Answer✔Caused by turbulent blood flow through the valves
Depolarization - Answer✔Muscle fibers are stimulated to contract
Repolarzation - Answer✔begins with the closing of sodium and calcium channels
Phase 0 - Answer✔The cell depolarizes and begins to contact
Phase 1 - Answer✔The cell begins to repolarize
Phase 2 - Answer✔Sodium and calcium enter the cell, and potassium flows out
Phase 3 - Answer✔The final phase of repolarization
Phase 4 - Answer✔The resting phase
Refractory Period - Answer✔The period during which the cell is depolarized or in the process of
repolarizing
Absolute Refractory Period - Answer✔Cardiac cells are unable to respond to any stimulus
Relative Refractory Period - Answer✔The heart muscle has been partially repolarized and may
depolarize in response to an electrical stimulus.
SA node - Answer✔located in the upper right atrium, receives blood from the right coronary
artery, and is the dominant pacemaker
AV node - Answer✔Receives its electrical impulses from the SA node.
The impulse conduction is delayed so the atria will empty into the ventricles
SA node rate - Answer✔60-100
AV Junction rate - Answer✔40-60
Purkinje network - Answer✔20-40 bpm
Baroreceptors - Answer✔detect change in blood pressure
Chemoreceptors - Answer✔detect changes in levels of O2, CO2, and H+ ions (pH) in the blood
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