Normal Tracing: Difference between revisions

Latest revision as of 23:17, 13 December 2011

A normal ECG

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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-{{Activediscuss}}
+{{authors|
+|mainauthor= [[user:Drj|J.S.S.G. de Jong]]
+|moderator= [[T.T. Keller]]
+|supervisor=
+}}
+[[Image:Nsr.jpg|thumb| A normal ECG]]
+{| class="wikitable"
+!Characteristics of a normal ECG
+|-
+|
+* '''[[Rhythm]]''': [[Sinus node rhythms and arrhythmias|sinus]]
+* '''[[Rate]]''': 60-100 bpm
+* '''[[Conduction]]''':
+** [[Conduction#The PQ interval|PQ interval]] 120-200ms
+** [[Conduction#The QRS interval|QRS width]] 60-100ms
+** [[Conduction#The QT interval|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 [[Q waves|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 morphology|ST elevation or depression]]
+**T waves should be [[ST morphology|concordant with the QRS complex]]
+* The ECG should not have changed from the previous ECG
+|}