The Health Education Assets Library (HEAL) is a collection of over 22,000 freely available digital materials for health sciences education. The collection is now housed at the University of Utah J. Willard Marriott Digital Library.
TO
Filters: Collection: "ehsl_heal"
| Title | Description | Subject | Collection | ||
|---|---|---|---|---|---|
| 1126 |
 |
3rd degree AV block rx'ed with a ventricular pacemaker | In 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 | |
| 1127 |
 |
Lead Error: V1 & V3 are Transposed | In 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 | |
| 1128 |
 |
PAC and PVC: complete vs. incomplete pause | PAC and PVC: complete vs. incomplete pause | Knowledge Weavers ECG | |
| 1129 |
 |
Electronic atrial pacing - marquette | Electronic atrial pacing - marquette | Knowledge Weavers ECG | |
| 1130 |
 |
Normal sinus rhythm - marquette | Normal sinus rhythm - marquette | Knowledge Weavers ECG | |
| 1131 |
 |
Left ventricular PVC's | In 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 | |
| 1132 |
 |
Junctional tachycardia with exit block: a manifestation of digitalis intoxication | Theladder 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 | |
| 1133 |
 |
Frontal plane QRS axis = +90 degrees | 1) 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 | |
| 1134 |
 |
Electrical and mechanical events diagram - marquette | Electrical and mechanical events diagram - marquette | Knowledge Weavers ECG | |
| 1135 |
 |
Anteroseptal MI, fully evolved: precordial leads | Anteroseptal MI, fully evolved: precordial leads | Knowledge Weavers ECG | |
| 1136 |
 |
Left atrial enlargement: leads II and V1 | Left atrial enlargement: leads II and V1 | Knowledge Weavers ECG | |
| 1137 |
 |
Fully evolved inferior MI: frontal plane | Fully evolved inferior MI: frontal plane | Knowledge Weavers ECG | |
| 1138 |
 |
Frontal plane QRS axis = -75 degrees | Frontal plane QRS axis = -75 degrees | Knowledge Weavers ECG | |
| 1139 |
 |
Supernormal conduction: 2nd degree AV block with rare captures; accelerated ventricular rhythm | This 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 | |
| 1140 |
 |
Complete AV block, junctional escape rhythm, and ventriculophasic sinus arrhythmia | Complete 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 | |
| 1141 |
 |
Junctional parasystole and pseudo-AV block | This 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 | |
| 1142 |
 |
Premature junctional complexes with retrograde P waves | The ladder diagram illustrates the PJC with retrograde atrial capture | Knowledge Weavers ECG | |
| 1143 |
 |
Left Atrial Abnormality & 1st Degree AV Block: Leads II and V1 | Left Atrial Abnormality & 1st Degree AV Block: Leads II and V1 | Knowledge Weavers ECG | |
| 1144 |
 |
Right Axis Deviation & RAE (P pulmonale): Leads I, II, III | Right Axis Deviation & RAE (P pulmonale): Leads I, II, III | Knowledge Weavers ECG | |
| 1145 |
 |
Ventricular bigeminy - marquette | Ventricular bigeminy - marquette | Knowledge Weavers ECG | |
| 1146 |
 |
LBBB and 2nd degree AV block, mobitz type I | Mobitz 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 | |
| 1147 |
 |
Infero-posterior MI&RBBB | Deep 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 | |
| 1148 |
 |
Extensive anterior/anterolateral MI: recent | Significant pathologic Q-waves (V2-6, I, aVL) plus marked ST segment elevation are evidence for this large anterior/anterolateral MI. The exact age of the infarction cannot be determined without clinical correlation and previous ECGs, but this is likely a recent MI. | Knowledge Weavers ECG | |
| 1149 |
 |
Nonconducted PAC's slowing the heart rate | Consecutive nonconducted PAC's, indicated by arrows, can significantly slow the heart rate. Note the distortion of the ST-T waves caused by the PAC. A hint in recognizing nonconducted PAC's is to find conducted PAC's in the same rhythm strip. | Knowledge Weavers ECG | |
| 1150 |
 |
three fates of PAC's: 1. normal conduction; 2. aberrant conduction; 3. non-conduction | three fates of PAC's: 1. normal conduction; 2. aberrant conduction; 3. non-conduction | Knowledge Weavers ECG |