Acute-Illness Nutrition Support / 急性病期营养支持

Definition

Acute-illness nutrition support is the principle that fever and infection can increase physiological stress while appetite and digestive tolerance fall, so food and fluid intake should support the patient rather than be withheld in an attempt to deprive a pathogen or tumor.

Current Synthesis

VOL.16 rejects the idea that a person can selectively “starve” a virus or tumor through ordinary food restriction: the person’s own cells and recovery also require energy and substrates. Its practical direction is modest—use foods the ill person can tolerate, favor digestible preparation, and preserve appropriate protein and energy rather than forcing heavy meals or imposing unsupported prohibitions.

The importance of intake rises when an older or chronically ill person stops eating, loses function, remains febrile, or becomes bedbound. Those changes can be both nutritional problems and signals of worsening illness. Diabetes, swallowing difficulty, vomiting, dehydration, constipation, altered consciousness, organ dysfunction, or prolonged poor intake can change what is safe and require clinical or dietetic assessment.

Key Claims

• Withholding ordinary nutrition does not selectively deprive a virus or tumor while sparing the patient.
• Fever and systemic illness can raise physiological demand while reducing appetite and digestive tolerance.
• Tolerable, digestible food with appropriate energy and protein is a general support principle, not a fixed menu or dose.
• New refusal or inability to eat in an older adult can indicate deterioration and should be interpreted beside hydration, function, cognition, symptoms, and duration.
• Diabetes and other chronic diseases modify food, glucose, fluid, and medication decisions; “eat more protein” is not sufficient individualized guidance.
• Bed rest, low intake, and constipation can compound discomfort and care burden, but bowel-management instructions require patient-specific assessment.

Evidence

• Anti-starvation boundary: VOL.16急诊危重病科｜阳康的急诊医生聊新冠之接诊亲身感受 states that pathogens and tumors do not create a rationale for starving the whole person because normal cells also need energy.
• Tolerability and nutritional support: VOL.16急诊危重病科｜阳康的急诊医生聊新冠之接诊亲身感受 favors light, digestible foods and appropriate protein during fever while noting reduced appetite and albumin in severely ill older patients.
• Older-adult care context: VOL.16急诊危重病科｜阳康的急诊医生聊新冠之接诊亲身感受 treats poor intake, immobility, diabetes, and constipation as interacting care concerns rather than isolated diet questions.

Counterevidence & Qualifications

The source supplies no validated calorie, protein, glucose, fluid, bowel, or feeding protocol, and its albumin and digestive-enzyme comments are simplified. Acute illness can make oral intake unsafe or insufficient, and individualized needs vary with age, body size, diabetes, kidney or liver disease, swallowing, gastrointestinal symptoms, medication, consciousness, severity, and goals of care. Persistent inability to eat or drink, dehydration, aspiration risk, altered mental state, or worsening illness requires qualified assessment.

What Changed

• Established an acute-infection counterpart to the cancer-specific anti-starvation boundary.
• Connected food tolerance and adequate intake with older-adult functional decline and escalation.
• Kept protein, glucose, bowel care, and feeding method inside patient-specific clinical context.

Related Concepts

• Cancer Nutrition Support Boundary - parallel rule rejecting whole-person starvation as selective tumor treatment.
• 呼吸道症状分诊 / Respiratory Symptom Triage - treats poor intake and functional decline as possible severity signals during respiratory illness.
• Older-Adult Home-Care Safety / 老年居家照护安全 - wider function, feeding, mobility, cognition, and escalation framework for home care.
• Targeted Supplement Need Assessment / 针对性补剂需求判断 - distinguishes assessed nutritional need from indiscriminate supplementation.
• Medical Risk Management - matches nutritional intervention and escalation to vulnerability and severity.