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51 Electrical and mechanical events diagram - marquetteElectrical and mechanical events diagram - marquetteKnowledge Weavers ECG
52 Anteroseptal MI, fully evolved: precordial leadsAnteroseptal MI, fully evolved: precordial leadsKnowledge Weavers ECG
53 Left atrial enlargement: leads II and V1Left atrial enlargement: leads II and V1Knowledge Weavers ECG
54 Fully evolved inferior MI: frontal planeFully evolved inferior MI: frontal planeKnowledge Weavers ECG
55 Frontal plane QRS axis = -75 degreesFrontal plane QRS axis = -75 degreesKnowledge Weavers ECG
56 methylmalonyl CoA mutase reactionIn 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 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
58 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
59 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
60 Mammalian fatty acyl synthase dimerThis 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 SynthetasesKnowledge Weavers Fatty Acids
61 Premature junctional complexes with retrograde P wavesThe ladder diagram illustrates the PJC with retrograde atrial captureKnowledge Weavers ECG
62 Left Atrial Abnormality & 1st Degree AV Block: Leads II and V1Left Atrial Abnormality & 1st Degree AV Block: Leads II and V1Knowledge Weavers ECG
63 Right Axis Deviation & RAE (P pulmonale): Leads I, II, IIIRight Axis Deviation & RAE (P pulmonale): Leads I, II, IIIKnowledge Weavers ECG
64 Ventricular bigeminy - marquetteVentricular bigeminy - marquetteKnowledge Weavers ECG
65 Hydration of an enoyl CoAHydration 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 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
67 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
68 Extensive anterior/anterolateral MI: recentSignificant 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 rateConsecutive 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-conductionthree fates of PAC's: 1. normal conduction; 2. aberrant conduction; 3. non-conductionKnowledge Weavers ECG
71 QRS axis = 0 degreesLead aVF is isoelectric; lead I is positive; therefore, the QRS axis is 0 degrees.Knowledge Weavers ECG
72 Ventricular fusion beat - marquetteVentricular fusion beat - marquetteKnowledge Weavers ECG
73 60 cycle artifact - marquette60 cycle artifact - marquetteKnowledge Weavers ECG
74 LBBB: precordial leadsLBBB: precordial leadsKnowledge Weavers ECG
75 Not all sore thumbs are ventricular in originPACs 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
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