Normal Tracing: Difference between revisions

Latest revision as of 23:17, 13 December 2011

Characteristics of a normal ECG
Rhythm: sinus Rate: 60-100 bpm Conduction: PQ interval 120-200ms QRS width 60-100ms QTc interval 390-450ms (use the QTc calculator for this) Heart axis: between -30 and +90 degrees P wave morphology: The maximal height of the P wave is 2.5 mm in leads II and / or III The p wave is positive in II and AVF, and biphasic in V1 The p wave duration is usually shorter than 0.12 seconds QRS morphology: No pathological Q waves No left or right ventricular hypertrophy No microvoltage Normal R wave propagation. (R waves increase in amplitude from V1-V5) ST morphology No ST elevation or depression T waves should be concordant with the QRS complex The ECG should not have changed from the previous ECG

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