Where should V4 lead be placed?

The V4 lead should be placed at the fifth intercostal space (ICS), at the midclavicular line. This positioning is crucial for obtaining an accurate electrocardiogram (ECG) reading. The V4 lead, which is part of the 12-lead ECG setup, is specifically designed to assess the anterior wall of the heart. Placing the V4 lead at the fifth ICS reflects its anatomical reference point just below the left nipple and in line with the midclavicular line, ensuring optimal electrical contact with the heart's electrical activity.

Accurate placement of the V4 lead is important because it can help in diagnosing various cardiovascular conditions by providing essential information about the heart's rhythm and potential abnormalities, particularly in the anterior segment. Correct lead placement is key in clinical practice to avoid misinterpretation of the ECG results, which can lead to inaccurate assessments and treatment plans.