A nurse is assessing a client who has a sliding hiatal hernia. Which of the following findings should the nurse expect?

The correct answer is B: Heartburn. In a sliding hiatal hernia, the stomach protrudes through the esophageal hiatus into the chest cavity, leading to acid reflux and heartburn. This occurs when the lower esophageal sphincter weakens, allowing stomach acid to flow back into the esophagus. Breathlessness (A) is not typically associated with a sliding hiatal hernia unless there is severe compression of the lungs. Abdominal cramping (C) is more commonly seen with other gastrointestinal issues. Constipation (D) is unrelated to a hiatal hernia.