At the start of an evening shift on a cardiac unit, a licensed practical nurse brings the nurse a list of client reports. Which of the following client reports should the nurse assess first?

A. Constipation: Constipation is uncomfortable but usually not life-threatening. It can be addressed after more urgent or potentially serious issues are assessed. B. Indigestion: Indigestion, especially in a client on a cardiac unit, may indicate angina or myocardial ischemia. Chest discomfort requires immediate assessment to prevent progression to a myocardial infarction, making it the highest priority. C. Swollen ankles: Peripheral edema can indicate fluid retention or heart failure but is typically a chronic or slowly developing issue. While important to monitor, it is not immediately life-threatening. D. Urinary frequency: Urinary frequency is generally a non-urgent concern unless associated with other symptoms like pain or signs of infection. It is a lower priority compared to potential cardiac issues.