ECG chest leads

Case contributed by Daniel J Bell
Diagnosis certain

Presentation

Unwell, fever, breathlessness, advanced HIV, very low CD4

Patient Data

Age: 45 years
Gender: Male
x-ray

Mobile AP erect resuscitation image.

Multiple ECG electrodes representing the V1-V6 chest leads, annotated on the second image. 

Bilateral patchy ground glass opacity of the mid and lower zones with relative peripheral sparing in an HIV patient with very low CD4 represents PCP.

Case Discussion

Chest lead skin positions 1:

V1: 4th intercostal space, right parasternal

V2: 4th intercostal space, left parasternal

V3: midway between V2 and V4

V4: 5th intercostal space in the nipple line in men (under the breast in women)

V5: midway between V4 and V6

V6: midaxillary line on the same horizontal line as V4 (may not be 5th intercostal space)

Remember that the CXR appearance will appear to differ from the above as these are the positions on the skin.

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