Complete Questions and Guide Answers
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1. Where are Beta 1 receptors found?
Answer: Heart and Kidneys
2. Stimulation of Beta 1 receptors result in an increase of what?
Answer: Heart Inotropy, Chronotropy, Dromotropy
Kidneys Renin-Angiotensin-Aldosterone System = Vasoconstriction = Increase blood pressure
3. Which node is located at the junction of the superior vena cava and the right
atrium, is typically supplied by the Right Coronary artery, and fires at a rate of
60-100 bpm.
Answer: SA Node
4. Atrial depolarization characterized by smooth, round, upright deflection less
than 0.11 secs long and less than 2.5mm tall is referred to as what on the ECG?
,Answer: P wave
5. Carvedilol (Coreg)
Metropolol (Lopressor)
Atenolol (Tenormin)
Propranolol (Inderal)
Bisoprolol (Zebeta)
Acebutolol (Sectral)
Comolol (Brevibloc)
Answer: Beta Blockers - used for blood pressure and cardiac problems
6. Epinephrine
Norepinephrine
Vasopressin
Dopamine
Phenylephrine
Dobutamine
Answer: Vasopressors
7. The middle of phase 3 to beginning of phase 4 in the cardiac cycle where
cardiac cells are partially refractory and partially repolarized and certain cells
can be depolarized in response to electrical stimulus.
, Answer: Relative Refractory Period
(Partial flush of the toilet)
8. Starlings Law
Answer: When end diastolic volume increases, stroke volume increases as well.
(When more blood is in the ventricles, the cardiac muscle stretches like rubber band and creates more forceful
contraction)
9. Intrinsic Rate for Ventricles (Purkinje Fibers)
Answer: 20-40
10. Intrinsic Rate for AV Junction
Answer: 40-60
11. Treatment for Beta Blocker Overdose
Answer: Glucagon 1-5mg IV/IO (1st Line Drug)
Calcium Chloride 500mg - 1g IV/IO
12. Why do we give Nitro for chest pain?
Class
MOA
Indications