Which maneuver is effective for reliving chest pain in patients with pericarditis?

Leaning forward is an effective maneuver for relieving chest pain in patients with pericarditis due to the anatomical changes it induces in the chest cavity. In pericarditis, the inflammation of the pericardial sac surrounding the heart can cause significant discomfort, particularly when the patient is in a supine or leaning back position. By leaning forward, the patient can relieve pressure on the pericardial structures, reducing pain caused by the friction and inflammation of the heart and its lining. This position often provides comfort and allows for easier breathing by minimizing the tension on the diaphragm and thoracic structures.

In contrast, other positions such as lying down or leaning back can exacerbate pain and discomfort, as they may increase the contact and friction between the inflamed pericardium and adjacent structures. Stretching does not directly address the underlying condition causing the pain and is less likely to provide relief in this specific context.