50+ V4R Lead Gif. Note tall r waves in. Infarction is seen when there is st elevation greater than 1 mm in v4r 5,11.

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V4r (v4 but right sided) is a sensitive lead for diagnosing. The most useful lead is v4r, which is obtained by placing the v4 electrode in the 5th right intercostal space in the midclavicular line. Changed lead positions of leads v3 and v5 to increase the sensitiviy to 'catch' a brugada pattern on the ecg.

The left anterior descending coronary st segment depression in lead v4r (right chest lead) also indicates left circumflex occlusion.

· presence of a right ventricular wall. The most useful lead is v4r, which is obtained by placing the v4 electrode in the 5th right intercostal space in the midclavicular line. A patient with atrial fibrillation with a so v4 is in the middle of the right clavicle. Infarction is seen when there is st elevation greater than 1 mm in v4r 5,11.