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.
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| Title | Description | Subject | Collection | ||
|---|---|---|---|---|---|
| 51 |
 |
Electrical and mechanical events diagram - marquette | Electrical and mechanical events diagram - marquette | Knowledge Weavers ECG | |
| 52 |
 |
Anteroseptal MI, fully evolved: precordial leads | Anteroseptal MI, fully evolved: precordial leads | Knowledge Weavers ECG | |
| 53 |
 |
Left atrial enlargement: leads II and V1 | Left atrial enlargement: leads II and V1 | Knowledge Weavers ECG | |
| 54 |
 |
Fully evolved inferior MI: frontal plane | Fully evolved inferior MI: frontal plane | Knowledge Weavers ECG | |
| 55 |
 |
Frontal plane QRS axis = -75 degrees | Frontal plane QRS axis = -75 degrees | Knowledge Weavers ECG | |
| 56 |
 |
methylmalonyl CoA mutase reaction | In the metabolism of propionyl CoA L-methylmalonyl CoA is converted to succinate by methylmalonyl CoA mutase. Succinate can then be metabolized throgh the tricarboxylic acid cycle. | Knowledge Weavers Fatty Acids | |
| 57 |
 |
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 | |
| 58 |
 |
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 | |
| 59 |
 |
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 | |
| 60 |
 |
Mammalian fatty acyl synthase dimer | This schematic diagram is intended to show the sequence of enzyme activities in the two subunits of a mammalian fatty acyl synthase dimer. It is not intended to imply anything about the detailed spatial relationships of the activities. | Coenzyme A Synthetases | Knowledge Weavers Fatty Acids |
| 61 |
 |
Premature junctional complexes with retrograde P waves | The ladder diagram illustrates the PJC with retrograde atrial capture | Knowledge Weavers ECG | |
| 62 |
 |
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 | |
| 63 |
 |
Right Axis Deviation & RAE (P pulmonale): Leads I, II, III | Right Axis Deviation & RAE (P pulmonale): Leads I, II, III | Knowledge Weavers ECG | |
| 64 |
 |
Ventricular bigeminy - marquette | Ventricular bigeminy - marquette | Knowledge Weavers ECG | |
| 65 |
 |
Hydration of an enoyl CoA | Hydration of the double bond is catalyzed by enoyl CoA hydratase. The product is an L-3-hydroxyacyl CoA. This reaction is a step in the beta-oxidation of fatty acids. | Knowledge Weavers Fatty Acids | |
| 66 |
 |
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 | |
| 67 |
 |
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 | |
| 68 |
 |
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 | |
| 69 |
 |
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 | |
| 70 |
 |
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 | |
| 71 |
 |
QRS axis = 0 degrees | Lead aVF is isoelectric; lead I is positive; therefore, the QRS axis is 0 degrees. | Knowledge Weavers ECG | |
| 72 |
 |
Ventricular fusion beat - marquette | Ventricular fusion beat - marquette | Knowledge Weavers ECG | |
| 73 |
 |
60 cycle artifact - marquette | 60 cycle artifact - marquette | Knowledge Weavers ECG | |
| 74 |
 |
LBBB: precordial leads | LBBB: precordial leads | Knowledge Weavers ECG | |
| 75 |
 |
Not all sore thumbs are ventricular in origin | PACs have three fates: normal conduction into ventricles, aberrant conduction in ventricles due to bundle branch or fascicular block, and non-conduction due to block in AV junction. In this example PAC 1 is normally conducted and PAC 2 is conducted with RBBB aberration. The longer preceding cycle ... | Knowledge Weavers ECG |