Cerebrovascular accident - nutritional therapeutic management

The fundamental pathogenesis of cerebrovascular accidents stems from disrupted cerebral perfusion, with the precise anatomical location of vascular compromise dictating the nature and severity of neurological deficits. The most prevalent etiologic contributors include chronic arterial hypertension, traumatic brain injuries, rupture of cerebral aneurysms, and coagulopathies predisposing to intracerebral hemorrhage. Two distinct clinical entities are recognized: hemorrhagic stroke—resulting from extravasation of blood into brain parenchyma—and ischemic stroke (cerebral infarction), arising from vascular occlusion. Key modifiable risk factors that elevate susceptibility to cerebrovascular events encompass tobacco dependence, an imbalanced dietary pattern characterized by excessive intake of saturated fats and refined carbohydrates, pathological adiposity (including morbid obesity), chronic ethanol consumption, and a sedentary lifestyle devoid of structured physical exercise.

Stroke frequently results in severe functional impairments, including altered consciousness, dysphagia (swallowing difficulties), and diminished cough reflex—conditions that preclude safe oral feeding. Swallowing disorders represent the primary cause of malnutrition in post-stroke patients, underscoring the critical need for an individualized nutritional strategy. Individuals in a comatose state or with profound neurological deficits require nasogastric tube feeding, utilizing liquid industrial diets or specialized nutritional formulations administered via syringe. Caloric requirements must be meticulously calculated based on body weight, metabolic status, and elevated energy demands stemming from increased respiratory effort, pain, and tissue repair processes. The optimal macronutrient distribution allocates 15–20% of energy from protein (approximately 5% higher than in healthy individuals), 25–30% from fats (emphasizing unsaturated sources), with carbohydrates fulfilling the remaining energy needs. Daily fluid meal volume should range from 1500–2500 ml at a concentration of 1 kcal/ml to facilitate tube administration. A regimen of four meals spaced 3.5–4 hours apart, served at body temperature (37°C), is recommended. Upon neurological improvement—marked by regained consciousness, stable respiration, and absence of aspiration events—transition to oral feeding may commence, beginning with semi-liquid foods (thickened soups, purées) and gradually introducing soft, then solid textures. The diet should emphasize vegetables, fruits, whole grains (pearl barley, buckwheat, millet), high-quality protein (fish, poultry, eggs), and sources of unsaturated fatty acids (flaxseed oil, oily fish). Properly balanced nutrition accelerates convalescence, supports tissue regeneration, and reduces complication risks, positioning it as an indispensable component of post-stroke care across all recovery stages.