Health Education Assets Library (HEAL)
 
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TitleDescriptionSubjectCollection
101 Long QT: an ECG marker for sudden cardiac deathLong QT: an ECG marker for sudden cardiac deathKnowledge Weavers ECG
102 Frontal plane QRS axis = 0 degreesFrontal plane QRS axis = 0 degreesKnowledge Weavers ECG
103 Isolated PAC - marquetteIsolated PAC - marquetteKnowledge Weavers ECG
104 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
105 A PAC initiates paroxysmal atrial fibrillationThe arrow indicates slight alteration of the ST-T wave by a PAC. The PAC, in turn, falls during the vulnerable period of atrial repolarization and initiates atrial fibrillation. Similar but more catastrophic events happen in the ventricles when PVC's occur during the vulnerable period, i.e. R-on-T...Knowledge Weavers ECG
106 Left Atrial Abnormality & 1st Degree AV BlockThe P-wave is notched, wider than 0.12s, and has a prominent negative (posterior) component in V1 - all criteria for left atrial abnormality or enlargement (LAE). The PR interval >0.20s. Minor ST-T wave abnormalities are also present.Knowledge Weavers ECG
107 3rd degree AV block rx'ed with a ventricular pacemakerIn A the ECG shows complete or 3rd degree AV block with a left ventricular escape rhythm, as evidenced by the upright QRS morphology. In B the artificial right ventricular pacemaker rhythm is shown.Knowledge Weavers ECG
108 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
109 PAC and PVC: complete vs. incomplete pausePAC and PVC: complete vs. incomplete pauseKnowledge Weavers ECG
110 Electronic atrial pacing - marquetteElectronic atrial pacing - marquetteKnowledge Weavers ECG
111 Normal sinus rhythm - marquetteNormal sinus rhythm - marquetteKnowledge Weavers ECG
112 Left ventricular PVC'sIn lead V1, these PVC's are positive or anterior in direction indicating probable LV origin with late activation of the right ventricle. The arrow points to the notch on the downstroke of the PVC making its morphology highly unlikely to be an aberrantly conducted supraventricular beat.Knowledge Weavers ECG
113 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
114 Frontal plane QRS axis = +90 degrees1) Lead I is isoelectric; 2) perpendiculars to lead I are +90 and -90 degrees; 3) leads II, III, aVF are positive; 4) therefore, the axis must be +90 degrees.Knowledge Weavers ECG
115 Electrical and mechanical events diagram - marquetteElectrical and mechanical events diagram - marquetteKnowledge Weavers ECG
116 Anteroseptal MI, fully evolved: precordial leadsAnteroseptal MI, fully evolved: precordial leadsKnowledge Weavers ECG
117 Left atrial enlargement: leads II and V1Left atrial enlargement: leads II and V1Knowledge Weavers ECG
118 Fully evolved inferior MI: frontal planeFully evolved inferior MI: frontal planeKnowledge Weavers ECG
119 Frontal plane QRS axis = -75 degreesFrontal plane QRS axis = -75 degreesKnowledge Weavers ECG
120 Supernormal conduction: 2nd degree AV block with rare captures; accelerated ventricular rhythmThis complicated rhythm strip illustrates 'supernormal' conduction... a situation where conduction is better than expected. The ladder diagram shows that the accelerated ventricular rhythm prevents most of the sinus impulses from reaching the ventricles. Only appropriately timed sinus impulses rea...Knowledge Weavers ECG
121 Complete AV block, junctional escape rhythm, and ventriculophasic sinus arrhythmiaComplete AV block is seen as evidenced by the AV dissociation. A junctional escape rhythm sets the ventricular rate at 45 bpm. The PP intervals vary because of ventriculophasic sinus arrhythmia; this is defined when the PP interval that includes a QRS is shorter than a PP interval that excludes a ...Knowledge Weavers ECG
122 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
123 Premature junctional complexes with retrograde P wavesThe ladder diagram illustrates the PJC with retrograde atrial captureKnowledge Weavers ECG
124 Left Atrial Abnormality & 1st Degree AV Block: Leads II and V1Left Atrial Abnormality & 1st Degree AV Block: Leads II and V1Knowledge Weavers ECG
125 Right Axis Deviation & RAE (P pulmonale): Leads I, II, IIIRight Axis Deviation & RAE (P pulmonale): Leads I, II, IIIKnowledge Weavers ECG
101 - 125 of 288