A comparison of the volume and pH of gastric contents of obese and lean surgical patients

RL Harter, WB Kelly, MG Kramer, CE Perez… - Anesthesia & …, 1998 - journals.lww.com
Obese surgical patients are typically considered to be more likely than lean patients to
possess high-volume and low-pH (HVLP) gastric contents after a standard preoperative fast …

Gastric residue is not more copious in obese patients

P Juvin, G Fèvre, M Merouche, T Vallot… - Anesthesia & …, 2001 - journals.lww.com
Results BMI was 46 8 kg/m2 in the obese subjects and 22 2 kg/m2 in the lean subjects. The
groups were similar for age (35 12 yr and 40 16 yr in the obese and lean subjects …

Drinking 300 mL of clear fluid two hours before surgery has no effect on gastric fluid volume and pH in fasting and non-fasting obese patients

JR Maltby, S Pytka, NC Watson… - Canadian Journal …, 2004 - search.proquest.com
Purpose To determine whether, in obese [body mass index (BMI)> 30 kg· m 2] patients, oral
intake of 300 mL clear liquid two hours before elective surgery affects the volume and pH of …

When fasted is not empty: a retrospective cohort study of gastric content in fasted surgical patients

P Van de Putte, L Vernieuwe, A Jerjir… - BJA: British Journal …, 2017 - academic.oup.com
Background. Perioperative aspiration leads to significant morbidity and mortality. Point-of-
care gastric ultrasound is an emerging tool to assess gastric content at the bedside …

Comparative evaluation of gastric pH and volume in morbidly obese and lean patients undergoing elective surgery and effect of aspiration prophylaxis

V Mahajan, J Hashmi, R Singh, T Samra… - Journal of Clinical …, 2015 - Elsevier
Introduction The anesthetic management of patients with morbid obesity is challenging.
There is no consensus on the routine use of aspiration prophylaxis in morbidly obese …

Effectiveness of standard fasting guidelines as assessed by gastric ultrasound examination: A clinical audit

S Sharma, AS Deo, P Raman - Indian journal of anaesthesia, 2018 - journals.lww.com
Methods: This audit was a prospective observational study which included all patients
posted for surgery within the audit period. Patients were fasted according to ASA fasting …

Prevalence and factors predictive of full stomach in elective and emergency surgical patients: a prospective cohort study

L Bouvet, FP Desgranges, C Aubergy… - BJA: British Journal …, 2017 - academic.oup.com
Background. This prospective observational study sought to assess the rate of full and empty
stomach in elective and emergency patients and to determine the factors associated with full …

Effects of preoperative carbohydrate loading on glucose metabolism and gastric contents in patients undergoing moderate surgery: a randomized, controlled trial

G Yagci, MF Can, E Ozturk, B Dag, T Ozgurtas, A Cosar… - Nutrition, 2008 - Elsevier
OBJECTIVE: Despite contrary evidence, the practice of overnight fasting before elective
surgery maintains its place in tradition. However, prolonged starvation, by its catabolic …

Gastric emptying is not prolonged in obese patients

V Buchholz, H Berkenstadt, D Goitein… - Surgery for obesity and …, 2013 - Elsevier
Background Obesity is associated with a poor anesthetic risk, in part because of the greater
aspiration rates. A greater gastric residue and lower stomach pH have been implicated. The …

The evidence base behind modern fasting guidelines

PC Stuart - Best Practice & Research Clinical Anaesthesiology, 2006 - Elsevier
Fasting before general anaesthesia aims to reduce the volume and acidity of stomach
contents, thus decreasing the risk of regurgitation/aspiration. The objectives of the Cochrane …