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17 Cards in this Set
- Front
- Back
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Sinus tachy or paroxysmal tachy?
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Sinus tachy - HR < 140/min
Paroxysmal tachy - HR > 160/min |
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Define syncope?
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A transcient loss of consciousness characterized by unresponsiveness and loss of postural tone, with spontaneous recovery
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Cardiovascular causes of syncope - Name the four subcategories
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1) Obstructed blood flow in hearts or lungs
2) Arrhythmias 3) Postural hypotension, occuring immediately on standing 4) Neurally-mediated reflex syncopal syndromes |
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To determine if we have a rythm that is of sinus origin what leads should we look at?
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Leads II, III, and aVF should be positive
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Can we see sinus bradycardia in the acute stages of a MI, particularly a diaphragmatic infarction?
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Yes
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If the longest PP or PR interval exceeds the shortest suc interval by _____ or more, sinus arrhythmia is daignosed
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0.16 seconds
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What are the 6 irregular irregular rhythms?
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1) Sinus arrhythmia
2) Wander atrial pacemaker 3) Multifocal atrial tachycardia 4) Atrial flutter with variable ventricular response 5) Atrial fibrillation 6) Ventricular fibrillation 4) |
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Hyperkalemia and P waves?
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Depression of the depolarization so we see a wide P.
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Rate of atrial flutter?
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220 to 300/min. 2:1, 3:1, 4:1 response
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What is meant by a wide QRS?
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More than .12 secs. This indicates that the electrical activation probably didn't spread through the ventricular conduction system
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What is the diagnosis of perfuse inverted T waves in the ECG?
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Myocarditis
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RVH can mask what MI?
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Posterior wall MI
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LAE is best seen in ____ with a prominent negative (posterior) component measuring 1mm wide and 1mm deep
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V1
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Criteria for RBBB
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1) QRS complex widened
2) RSR' in V1 and V2 with ST segment depression and T wave inversion 3) Reciprocal changes in V5, V6, I, and AvL |
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Criteria for LBBB
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1) Wide QRS
2) Broad or notched R wave with prolonged upstroke in leads V5, V6, I and AvL, with ST segment depression and T wave inversion |
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Wide QRS: 4 things
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1) RBBB
2) LBBB 3) Interventricular conduction delay 4)WPW |
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Hyperkalemia and P wave, T waves?
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The PR interval becomes prolonged, and the P wave gradually flattens and then disappears. The T waves are even more peaked.
Ultimately, the QRS complex widens until it merges with the T wave, forming a sine wave pattern. VF may eventually develop |
