When assessing an elderly patient with potential heart failure, which of these findings would be considered abnormal?

Low blood pressure is considered an abnormal finding when assessing an elderly patient with potential heart failure. In heart failure, the heart's ability to pump blood effectively is often compromised, which can lead to inadequate perfusion and reduced blood pressure. An elderly patient, who may already have other compensatory mechanisms diminished due to age, would be expected to maintain a certain level of blood pressure to ensure proper organ function. Low blood pressure in this context could indicate a significant decline in cardiac output and may necessitate further investigation or intervention.

In contrast, increased thirst and dry skin can sometimes be caused by dehydration or other non-cardiac factors rather than directly indicating heart failure. Normal urinary output is actually a sign that kidneys are functioning adequately, which is often preserved in heart failure until more advanced stages. Therefore, while these other signs may require attention, low blood pressure specifically signals a more urgent concern in the context of heart failure assessment in elderly patients.