Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
EKG''s
| Question | Answer |
|---|---|
| normal PR measurement | <0.2 |
| normal QRS interval | <0.1 |
| action during PR interval | atrial depolarization |
| action during QRS interval | ventricular depolarization |
| action during ST segment | ventricular repolarization |
| intrinsic rate of SA node/atria | 60-100 bpm |
| intrinsic rate of AV node | 40-60 bpm |
| intrinsic rate on ventricles | 20-40 bpm |
| manifestations of sinus tach | 100-180 bpm, reg. rhythm, p waves present and look alike |
| etiology of sinus tach | stress, caffeine, nicotine, fever, exercise, hyperthyroid, hypovolemia, CHF |
| Tx's for sins tach | treat underlying cause, give O2, CCBs, Betablockers, digitalis |
| manifestations of sinus brady | <60 bpm, reg. rhythm, P waves present and look alike |
| etiology of sinus brady | drugs, MI, hyperkalemia, hypothyroid, athletes |
| Tx's for sinus brady | treat underlying cause, give O2, atropine, epi, dopamine, transcutaneous pacing |
| manifestations of Premature Atrial Contractions (PAC) | usually 60-100 bpm, irregular and early beat, p waves presents and look same |
| cause of PAC's | stress, fatigue, alcohol, caffeine, smoking, CAD, atria enlarged, valvular dz |
| Atrial dysrhythmias involve which segment | P wave |
| Ventricle dysrhythmias involve this segment | QRS wave |
| manifestations of atrial flutter | 220-350 bpm, atrial rhythm is regular but ventricular rhythm is either regular or irregular, P wave not identifiable, SAWTOOTH appearance |
| causes of atrial flutter | cardiac dz, alcoholism, PE, pericarditis, hyperthyroidism |
| Tx's for atrial flutter | anticoagulation, cardioversion, CCB, Betablockers, digitalis, valsalva, carotid massage |
| manifestation of atrial fibrillation | atrial 400-600 bpm, vent. rhythms very irregular, P not identifiable, pulse deficit, decreased CO, causes pooling in atria and cause clots or emboli |
| Tx's for AFib | anticoagulation, amiodarone, CCB, betas, digoxin, pacing |
| when to cardiovert? | is dysrhythmia is <48hrs and unresponsive to mxs, if >48hrs treat with coumadin 3 wks before CV and 4 wks after or TEE first then anticoagulation therapy for 4 wks after CV |
| PAT or PVST- paroxysmal supraventricular tach. manifestations | 150-200 bpm, QRS normal, difficult to see P waves, fast but regular rhythm |
| Tx's for PVT | valsalva, carotid massage, adenosine, Bblockers, cardioversion, ablation |
| causes or PSVT | CAD, MI, extreme emotions, caffeine, dig. toxicity, hypokalemia |
| cause of blocks | conduction disturbance, damage to AV junction (CAD, dig. toxicity, MI, rheumatic fever) |
| types of AV blocks | 1st, 2nd and 3rd degree blocks |
| 1st degree AV block | usually normal rate & rhythm, PR >0.2! |
| 2nd degree AV block/Mobitz 1/Wenckebach | atrial rate faster than ventricular, PR lengthens until QRS drops, better prognosis than type 2 |
| 2nd degree block/Mobitz II | atrial rate faster than ventricular, PR slightly prolonged but consistent, QRS periodically abent, may be caused by hyperkalemia |
| management of 2nd degree blocks | monitor pt. for progression into higher block, if s/s then atropine, isuprel and pacemaker; withhold digoxin; if due to MI it may reverse after injury heals |
| 3rd degree block | A rate faster than V, P wave and QRS wave are normal lengths but completely unrelated, firing at will |
| Tx of 3rd degree | treat cause, O2, pacing, atropine, epi, dopamine, prepare for CPR if goes into asystole |
| bundle branch block | widened or notched QRS (bunny ears), may need pacemaker depending of how pt. tolerates the dysrhythmia |
| PVC's/ premature ventricular contractions | wide and bizarre QRS, no atrial activity before QRS, often electrolyte imbalance! |
| Tx for PVC | if pt. is symtomatic give lidocaine, Bblockers, O2, check electrolytes! |
| ventricular tach.manifestations | looks like tombstones, 101-250 bpm, QRS > 0.12, 3 or more PVC's |
| etiology of Vtach | cardiac dz, MI, dig toxicity, life threatening and may progress to Vfib |
| Tx of Vtach if pt. is stable | anti-dysrhythmics (amiodarone, lidocaine, Bblockers, etc), cardioversion |
| Tx of Vtach is pt. is unstable | Dfib, precordial thump, magnesium or lidocaine |
| ventricular fibrillation manifestations | no P wave, erractic impulses, extremely rapid, LETHAL |
| Tfib etiology | severe myocardial damage, R on T phenomenon, hypothermia, contact w/ high voltage electricity, electrolyte imbalance, med toxicity |
| Txs for VFib | shock, 5 cycles of CPR then check rhythm, epi, vasopressin, amiodarone, lidocaine, magnesium |
| Torsades | type of Vfib; wide then narrow spikes; hypokalemia or hypomagnesia |
| PEA and asystole | flatline; PEA there is still electrical activity but no pulse, start CPR! |
Created by:
leh072487
Popular Nursing sets