Document Detail

"Nulla per os [NPO] after midnight" reassessed.
MedLine Citation:
PMID:  8808505     Owner:  NLM     Status:  MEDLINE    
The concept that fasting produces an "empty stomach" has been shown to be incorrect. Numerous studies demonstrate that fasting neither diminishes gastric volume nor decreases gastric acidity and the risk of pulmonary aspiration is not increased by the preoperative intake of clear liquids. Nevertheless, most surgeons and anesthesiologists continue to adhere to the traditional NPO after midnight tradition, a tradition which should be abandoned. Withholding fluids preoperatively is not only of no benefit to patients but may even be harmful. Based on current knowledge and experience, the following guidelines, which represent a beneficial and humane advance for all surgical patients, are recommended. 1) Adults and children undergoing elective surgery under general anesthesia as inpatients or outpatients in good health (ASA Class I or II) and without specific contra-indications (such as morbid obesity, gastrointestinal disease, etc.) should be allowed and encouraged to drink clear fluids up to two hours before surgery. 2) Patients undergoing elective surgery under general anesthesia and major regional blocks that might require conversion to general anesthesia should remain NPO for solids and non-clear liquids for a minimum of six hours before scheduled surgery. 3) Patients undergoing elective surgery under regional local anesthesia in good health and without specific contra-indication should be allowed and encouraged to have their normal breakfast and fluids as desired on the day of surgery.
J L Dowling
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Rhode Island medicine     Volume:  78     ISSN:  1061-222X     ISO Abbreviation:  R I Med     Publication Date:  1995 Dec 
Date Detail:
Created Date:  1996-10-24     Completed Date:  1996-10-24     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  9203052     Medline TA:  R I Med     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  339-41     Citation Subset:  IM    
Ophthalmology, Brown University School of Medicine, Providence, RI, USA.
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MeSH Terms
Anesthesia, General
Anesthesia, Local
Anesthetics / administration & dosage
Cataract Extraction*
Child, Preschool
Hospitals / trends
Preoperative Care / trends*
Rhode Island
Stomach / physiology
Reg. No./Substance:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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