In which location is the V5 lead placed during an ECG?

The V5 lead is positioned at the anterior axillary line at the fifth intercostal space. This placement is crucial for obtaining a clear view of the heart's lateral wall, particularly the left ventricle, during an electrocardiogram (ECG). Correct placement allows for accurate assessment of cardiac electrical activity, aiding in the diagnosis of various cardiac conditions.

The anterior axillary line is an important landmark in chest lead placement because it helps provide a standardized location relative to the body’s anatomy. When the V5 lead is placed here, it helps to establish a good angle for detecting any potential abnormalities in the cardiac rhythms and electrical conduction pathways.

Locations that are not aligned with the anterior axillary line and fifth intercostal space, such as the area under the left armpit or directly over the heart, may not yield reliable results for assessing the electrical activity needed for clinical purposes. Additionally, placing the lead on the midclavicular line is associated with the V4 lead rather than V5, which is why precise knowledge of lead placements is vital for anyone conducting an ECG.