Therapeutic diets and feeding
Many patients need special diets or help with eating. Nurses implement diet orders, assist with feeding, and manage tube feedings safely. For study only, not clinical guidance: always follow your programme, current local protocols, and supervising clinicians.
Diet progression
After surgery or illness, diets often progress from nil by mouth to clear liquids (broth, clear juices, gelatin), then full liquids (milk, cream soups), then soft foods, then a regular diet, as tolerated. Bowel sounds, passing gas, and absence of nausea guide progression, according to provider orders.
Therapeutic diets
Therapeutic diets address specific conditions: sodium-restricted diets for heart failure and hypertension; carbohydrate-consistent diets for diabetes; renal diets limiting potassium, phosphorus, sodium, and sometimes protein and fluid for kidney disease; low-fibre or high-fibre diets for bowel conditions; and gluten-free diets for coeliac disease.
Dysphagia
Dysphagia (difficulty swallowing) is common after stroke and in neurological conditions and raises the risk of aspiration pneumonia. Patients should have a swallowing screen before eating or drinking. Speech-language pathologists recommend modified textures and thickened fluids; the IDDSI framework standardises texture levels internationally.
Safe feeding assistance
When helping patients eat, sit them upright (ideally 90 degrees or as upright as possible), offer small bites, allow time, check that the mouth is clear between bites, and keep them upright for 30 minutes after meals. Watch for coughing, choking, or a wet-sounding voice, which suggest aspiration.
Enteral nutrition
Enteral nutrition delivers formula through a tube into the stomach or small intestine, for patients who cannot eat enough but have a working gut. Nasogastric tubes are used short-term; gastrostomy (PEG) tubes are used long-term. Tube placement must be verified before use according to policy, often by X-ray for newly placed tubes and by checking aspirate pH and external tube length.
Preventing tube-feeding complications
Keep the head of the bed raised at least 30-45 degrees during feeding and for a time afterward to reduce aspiration risk. Flush tubes with water as ordered to prevent clogging. Monitor for diarrhoea, abdominal distension, high residual volumes per policy, and electrolyte imbalances. Give medications through tubes only in forms suitable for this route.
Parenteral nutrition
Parenteral nutrition (PN) delivers nutrients directly into the bloodstream through a central venous catheter, used when the gut cannot be used. It carries risks of bloodstream infection and blood glucose problems, so nurses use strict aseptic technique, monitor glucose closely, and never stop PN abruptly without orders because of hypoglycaemia risk.
Worked example
A patient two days after a stroke wants a drink of water. He has not yet had a swallowing screen. The nurse explains that he must wait until his swallowing is checked, provides mouth care to keep him comfortable, and arranges the screen. Drinking before assessment could cause aspiration pneumonia.
Key takeaways
Diets often progress from clear liquids to regular as tolerated. Therapeutic diets target conditions: sodium restriction, carbohydrate consistency, renal limits, gluten-free. Screen for dysphagia before oral intake, especially after stroke; use modified textures as recommended. Feed upright with small bites and watch for aspiration. Verify tube placement, keep the head raised 30-45 degrees, and flush tubes. Parenteral nutrition needs asepsis and glucose monitoring.
Flashcard
Broth, clear juices, gelatin
Check your understanding
Why should a patient who has just had a stroke not be given water before a swallowing screen?