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[Caloric substrates in postoperative parenteral nutrition]
L De Salvo1, E Romairone, G L Ansaldo
1Cattedra di Clinica Chirurgica, Università Di Genova.
Minerva Chirurgica
|May 31, 1991
Summary
Postoperative metabolism involves stress, leading to glucose intolerance and protein breakdown. Insufficient nutrition is harmful; alternative energy sources like branched-chain amino acids are recommended.
Area of Science:
- Biochemistry
- Metabolic Medicine
- Surgical Physiology
Background:
- Postoperative metabolic changes significantly impact patient recovery.
- Understanding these shifts is crucial for effective nutritional management.
Purpose of the Study:
- To detail carbohydrate, lipid, and nitrogen metabolism in the postoperative period.
- To differentiate between early and late postoperative metabolic phases.
Main Methods:
- Analysis of metabolic substrates (carbohydrates, lipids, nitrogen).
- Subdivision of the postoperative period into early and late phases for comparative study.
Main Results:
- The early postoperative phase exhibits stress metabolism characterized by glucose intolerance.
- Significant protein catabolism occurs in the early phase.
- Insufficient caloric intake is detrimental, exceeding the negative impact of fasting.
Conclusions:
- Alternative caloric sources, including branched-chain amino acids, fatty acids, and ketone bodies, should be utilized.
- Optimizing nutrition with alternative substrates is vital for mitigating negative postoperative metabolic effects.