Difference between revisions of "ECG-ALGORITHM"
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[[Summary Article| | ===== [[Summary Article|'''SUMMARY''']] ===== | ||
<i>RATE</i> | |||
<br/>1. ASSESS RATE: 300/(large squares) interval in mm. Bradycardia if HR < 60/min; tachycardia if HR > 100/min. | |||
<br/> | <br/> | ||
<br/><i>RYTHM</i> | |||
<br/> | |||
<br/>2. ASSESS RYTHM: RR intervals (1 small square variation is normal) & check that a P precedes a QRS complex. | |||
<br/> | |||
<br/><i>INTERVALS</i> | |||
<br/>3. EXAMINE PR INTERVAL: normal 120-200ms, prolonged if heart block present. | |||
<br/> | |||
<br/>4. EXAMINE QRS INTERVAL: normal < 100ms. Prolonged in BBB, WPW, ventricular pacemaker, tricyclics. | |||
<br/> | |||
<br/>5. EXAMINE QT INTERVAL: 340-470 ms. Prolonged in tricyclic overdose, hypo-Ca/Mg/K, starvation, hypothermia, quinidine, sotalol, amiodarone use. | |||
<br/> | |||
<br/><i>WAVEFORMS</i> | |||
<br/>6. INTERPRET WAVEFORM. | |||
<br/> | |||
<br/>7. ASSESS ST-SEGMENT: elevated in ACS, pericarditis, Prinzmetal angina and others. | |||
<br/> | |||
<br/><i>OTHERS</i> | |||
<br/>8. ASSESS AXIS: Normal is -30 to +100. +I +aVF: normal; -I +aVF: RAD; +I -aVF: LAD; -I -aVF: RAD/LAD. LAD is a marker for CAD, RAD is normal for children, young adults; RVH in older adults. | |||
<br/> | |||
<br/>9. ASSESS HYPERTROPHY: | |||
<br/>[[Image:paste-37711181b9927f4c0aeecd6996699393167c7721.jpg]] | |||
<br/> | |||
<br/>10. ASSESS BRANCH BLOCK: LBBB (QRS 120-180 ms), RBBB (QRS > 120 ms) | |||
<br/>[[Image:paste-b85645b70154480c5df1ba6fe935c0cd1363d585.jpg]] | |||
[[Category:Electrocardiogram]] | [[Category:Electrocardiogram]] | ||
[[Category:Advanced Life Support]] | [[Category:Advanced Life Support]] | ||
Revision as of 08:39, 30 December 2022
SUMMARY
RATE
1. ASSESS RATE: 300/(large squares) interval in mm. Bradycardia if HR < 60/min; tachycardia if HR > 100/min.
RYTHM
2. ASSESS RYTHM: RR intervals (1 small square variation is normal) & check that a P precedes a QRS complex.
INTERVALS
3. EXAMINE PR INTERVAL: normal 120-200ms, prolonged if heart block present.
4. EXAMINE QRS INTERVAL: normal < 100ms. Prolonged in BBB, WPW, ventricular pacemaker, tricyclics.
5. EXAMINE QT INTERVAL: 340-470 ms. Prolonged in tricyclic overdose, hypo-Ca/Mg/K, starvation, hypothermia, quinidine, sotalol, amiodarone use.
WAVEFORMS
6. INTERPRET WAVEFORM.
7. ASSESS ST-SEGMENT: elevated in ACS, pericarditis, Prinzmetal angina and others.
OTHERS
8. ASSESS AXIS: Normal is -30 to +100. +I +aVF: normal; -I +aVF: RAD; +I -aVF: LAD; -I -aVF: RAD/LAD. LAD is a marker for CAD, RAD is normal for children, young adults; RVH in older adults.
9. ASSESS HYPERTROPHY:
10. ASSESS BRANCH BLOCK: LBBB (QRS 120-180 ms), RBBB (QRS > 120 ms)
