A man has been admitted to the hospital unit with a medical diagnosis of Chronic Obstructive Pulmonary Disease (COPD) .He is receiving supplemental oxygen at 2 L/min via nasal cannula.Which positioning technique will best assist him with his breathing?

A) Fowler's position
B) Sims' position
C) Lateral recumbent position
D) Lateral position

Fowler's position is a semisitting position in which the head of the bed is elevated 45 to 60 degrees.This position promotes respiratory function by lowering the diaphragm and allowing the greatest chest expansion.Sims' position is a side-lying position in which the patient is on his left side with left leg extended and right leg flexed.This position is commonly used for rectal examination.Lateral recumbent position is another term describing Sims' position.Lateral position simply means side lying.