Health Education Assets Library (HEAL)
 
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TitleDescriptionSubjectCollection
101 Identification of PVC's and PAC'sPVC's usually stick out like sore thumbs; PAC's are often difficult to see because they are hidden in the preceding ST-T wave. The PVC in this example is mostly negative in lead V1 suggesting RV origin; i.e., most of activation is moving in posterior direction towards the left ventricle.Knowledge Weavers ECG
102 Idioventricular escape rhythmIdioventricular escape rhythmKnowledge Weavers ECG
103 Incomplete AV dissociation due To 2nd degree AV block2nd degree AV block is evident from the nonconducted P waves. Junctional escapes, labled J, terminate the long pauses because that's the purpose of escape pacemakers....to protect us from too slow heart rates. All QRSs with shorter RR intervals are capture beats, labeled c. Atypical RBBB with a q...Knowledge Weavers ECG
104 Indeterminate frontal plane QRS axisIndeterminate frontal plane QRS axisKnowledge Weavers ECG
105 Inferior & Anteroseptal MI + RBBBPathologic Q waves are seen in leads II, III, aVF (inferior MI) and in leads V1-3 (anteroseptal MI). RBBB is recognized by the wide QRS (>0.12s) and the anterior/rightwards orientation of terminal QRS forces. When an anteroseptal MI complicates RBBB (or visa versa) the rSR' complex in V1 (typical ...Knowledge Weavers ECG
106 Inferior MI and RBBBInferior MI and RBBBKnowledge Weavers ECG
107 Inferior MI: fully evolvedSignificant pathologic Q-waves are seen in leads II, III, aVF along with resolving ST segment elevation and symmetrical T wave inversion. This is a classic inferior MI.Knowledge Weavers ECG
108 Infero-posterior MIInfero-posterior MIKnowledge Weavers ECG
109 Infero-posterior MI & RBBB: Frontal Plane Leads + V1Infero-posterior MI & RBBB: Frontal Plane Leads + V1Knowledge Weavers ECG
110 Infero-posterior MI with RBBBThis is an unusual RBBB because the initial R wave is taller than the R wave in lead V1. This is the clue for true posterior MI. The tall initial R wave in V1 is a pathologic R wave analagous to the pathologic Q wave of an anterior MI.Knowledge Weavers ECG
111 Infero-posterior MI&RBBBDeep Q waves in II, III, aVF plus tall R waves in V1-2 are evidence for this infero-posterior MI. The wide QRS (>0.12s) and RR' complex in V1 are evidence for RBBB. Any time RBBB has an initial R in V1 equal to or greater than the R', true posterior MI must be considered. Q waves in V5-6 suggest a...Knowledge Weavers ECG
112 Inferolateral ST segment elevationST Segment elevation with a straight or convex upwards configuration usually means transmural ischemia (or injury) and is seen in the setting of acute myocardial infarction. This ECG finding may also be seen transiently during coronary artery spasm. Unlike ST depression, ST elevation is often loca...Knowledge Weavers ECG
113 Inferoposterior MIInferoposterior MIKnowledge Weavers ECG
114 Inferoposterior MIInferoposterior MIKnowledge Weavers ECG
115 Interpolated PVCs - marquetteInterpolated PVCs - marquetteKnowledge Weavers ECG
116 Isochronic ventricular rhythmAn isochronic ventricular rhythm is also called an accelerated ventricular rhythm because it represents an active ventricular focus. This arrhythmia is a common reperfusion arrhythmia in acute MI patients. It often begins and ends with fusion beats and there is AV dissociation. Treatment is usuall...Knowledge Weavers ECG
117 Isolated PAC - marquetteIsolated PAC - marquetteKnowledge Weavers ECG
118 Junctional escape rhythmJunctional escape rhythmKnowledge Weavers ECG
119 Junctional parasystole and pseudo-AV blockThis complicated rhythm strip shows normal sinus rhythm and a competing junctional parasystolic focus. Solid circles indicate junctional premature beats from the parasystolic focus. Open circles indicate non-conducted junctional prematures; the first open circle is a nonconducted junctional prematur...Knowledge Weavers ECG
120 Junctional tachycardia - marquetteJunctional tachycardia - marquetteKnowledge Weavers ECG
121 Junctional tachycardia with exit block: a manifestation of digitalis intoxicationTheladder diagramsays it all: the atria are fibrillating; there is complete heart block in the AV junction; a junctional tachycardia focus is firing at about 130 bpm, but not all junctional impulses reach the ventricles due to 2nd degree exit block.Knowledge Weavers ECG
122 LAFB: frontal plane leadsLAFB: frontal plane leadsKnowledge Weavers ECG
123 LBBB and 2nd degree AV block, mobitz type IMobitz II 2nd degree AV block is usually a sign of bilateral bundle branch disease. One of the two bundle branches should be completely blocked; in this example the left bundle is blocked. The nonconducted sinus P waves are most likely blocked in the right bundle which exhibits 2nd degree block. ...Knowledge Weavers ECG
124 LBBB: precordial leadsLBBB: precordial leadsKnowledge Weavers ECG
125 Lead Error: V1 & V3 are TransposedIn this normal 12-lead ECG the V1 and V3 chest electrodes are interchanged. Experienced ECG interpreters should be able to spot this lead placement error.Knowledge Weavers ECG
101 - 125 of 248