After years of struggling with weight management, a middle-age man is evaluated for gastroplasty. He has experienced difficulty with managing his diabetes mellitus and hypertension, but he is approved for surgery. Which intervention is most important for the nurse to include in this client's plan of care?

The correct answer is Choice D. Choice A rationale: Depression assessment is important in bariatric care, but postoperative priorities focus on physiologic risks—venous thromboembolism, pulmonary complications, bleeding, and leaks—heightened by obesity, diabetes, hypertension, and immobility; psychosocial screening is longitudinal. Choice B rationale: Urinary incontinence is not a typical complication of gastroplasty. Immediate risks include venous thromboembolism, pulmonary issues, hemorrhage, anastomotic leak, and infection; prioritizing VTE prophylaxis and respiratory support offers morbidity reduction. Choice C rationale: Early post-gastroplasty nutrition requires staged progression: clear liquids to pureed, tiny portions, high-protein focus, vitamin-mineral supplementation. Offering meal variety risks overeating, nausea, vomiting, dumping syndrome, and staple-line stress or disruption. Choice D rationale: Sequential compression devices augment venous return, reduce stasis, and lower deep vein thrombosis and pulmonary embolism risk in obese, diabetic, hypertensive surgical patients with limited mobility; evidence-based venous thromboembolism prophylaxis.