The nurse should anticipate difficulty locating the point of maximal impulse (PMI) in which client? Reference Range: Body mass index [(BMI) Normal or healthy weight (18.5 kg/m2 to 24.9 kg/m2)]

A 75-year-old with a pneumothorax and a chest tube.

A 45-year-old long distance runner with a body mass index (BMI) of 18 kg/m2.

A 2-year-old who is demonstrating diaphragmatic breathing.

A 54-year-old who is 5 feet (152.4 cm) tall and weighs 300 pounds (136.1 kg).