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A cell is in a polarized state when it is
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acute care
acute care Cardiac Rhythyms
| Question | Answer |
|---|---|
| PEA | pulseless electrical activity |
| A cell is in a polarized state when it is | at rest |
| _____ _____ is when channels open allowing the exchange of K, Na and Ca ions to occur | action potential |
| the property of being able to recieve an electrical impulse from a neighboring cell, depolarize and pass onto another cell | conductivity |
| P-waves represent | atrial contraction |
| QRS-waves represent | ventricular contraction |
| T-waves represent | ventricular relaxation |
| Only ____ electrodes on an EKG are active at any one time | three |
| Normal PR interval | 0.12 - 0.20 |
| Normal QRS interval | less than 0.12 |
| Artifact on an EKG represents | patient movements |
| Electrical response in a patients room causing interference on the the EKG reading | 60 cycle interference |
| rate:70, rhythm: regular, P Wave for every QRS, PR interval .12, QRS interval .06 | normal sinus rhythm |
| treatment for normal sinus rhythm | nothing, monitor patient and EKG |
| Rate:50, rhythm: regular, P Wave for every QRS, QRS: .16 | sinus bradycardia |
| treatment for sinus bradycardia | give atropine and consult for a pacemaker |
| action of atropine | blocks vagas nurve and makes sympathetic nerves take control and it is a short actingmed |
| Rate: 70, rhythm: irregular, SA node rate increases with respirations, all intervals with in normal limits | sinus arrhythmia or dysrhythmia |
| Rate: 160, rhythm: regular, difficult to see P Waves, QRS normal | supraventricular tachycardia |
| treatment for supraventricular tachycardia | adenosine, amiodarone, cardioversion |
| Rate: 70, rhythm: irregular, no P Waves QRS normal | A-Fib |
| Rate: 250, rhythm: regular, F-waves (saw tooth), not P Waves not PR interval QRS regular | A-Flutter |
| P-Wave looks different than the rest, regular rhythm, rate 85, PR 0.16, QRS: 0.08 | PAC: pre atrial contraction |
| Early QRS, wide and bizarre QRS, QRS >.12, no P Wave before the QRS | PVC: preventricular contraction |
| > 6 PVC in one min what do you do | call the doctor |
| rate > 100, rhythm regular, three or more PVC's in a row | V-Tac: ventricular tachycardia |
| treatment for V-Fib | shock X3, epinephrine, defib, vasopressin, defib, amiodarone |
| PR interval > .20 sec | first degree heart block |
| normal to slow rate, irregular rhythm, P Wave not followed by a QRS | second degree heart block / Wenchebach |
| rate slow, regular rhythm, more P Waves that QRS | second degree heart block / classical |
| slow rate, regular P to P, regular QRS to QRS, irregular PR interval | Third degree heart block |
Created by:
dnoyes
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