Weight.-rationale: heart failure typically causes fluid overload, resulting in weight gain. therefore, weight is the best indicator of this clients status. one pound gained or lost is equivalent to 500 ml. fluid intake and output and vital signs are less accurate indicators than weight. urine specific gravity reflects urine concentration, indicating overhydration or dehydration. numerous factors can influence urine specific gravity, so it isnt the most accurate indicator of the clients status.client needs category: physiological integrityclient needs subcategory: pharmacological and parenteral therapiescognitive level: applicationreference: smeltzer, s.c., and bare, b. brunner & suddarths textbook of medical surgical-nursing, 11th ed. philadelphia: lippincott williams & wilkins, 2008, p. 953.