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All ECG 39

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Source: Learn the Heart

The ECG shows sinus rhythm at about 90 beats per minute with a normal PR interval. The frontal plane QRS axis is about +15°. The QTc (Fridericia) is quite prolonged, about 687 msec.

During an acute intracranial process such as intracranial hemorrhage or after carotid endarterectomy, dramatic ECG changes can be seen in the absence of any cardiac pathology. These include deep inversion of the T waves and prolongation of the QT interval. The connection between the brain and heart is poorly understood. 

Related: Wellen's Syndrome ECG ReviewProlonged QT Interval ECG