???Silent??? Regurgitation and Aspiration During General Anesthesia

Blitt, Casey D.; Gutman, Harvey; Cohen, David D.; Weisman, Harold; Dillon, John

doi:10.1213/00000539-197009000-00012

Cited by 70 publications

(38 citation statements)

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“…With older anaesthetic techniques, involving ether, ethylene or cyclopropane, the reported frequency of regurgitation was 26.3% [5] and 14% [6] respectively; it decreased to 7.8% when these studies were repeated, 20 years later, using contemporary anaesthetic techniques [7].…”

Section: Discussionmentioning

confidence: 96%

Gastric regurgitation during general anaesthesia in different positions with the laryngeal mask airway

Mikatti¹,

Luthra²,

Healy³

et al. 1995

Anaesthesia

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SummaryNinety patients, divided into three groups of 30, were investigated to determine the incidence of gastric regurgitation during general anaesthesia administered via the laryngeal mask airway in the supine, Trendelenburg and lithotomy positions. Fifteen minutes before induction of anaesthesia eachpatient swallowed a 75 mg methylene blue capsule. At the endof surgery, the LMA and the oropharynx were inspected for bluish discoloration which was considered to be a sign of gastric regurgitation. No blue dye was detected in the supine group but it was observed in one patient in each of the other two groups.

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Section: Discussionmentioning

confidence: 96%

Gastric regurgitation during general anaesthesia in different positions with the laryngeal mask airway

Mikatti¹,

Luthra²,

Healy³

et al. 1995

Anaesthesia

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“…Turndorf et al and Blitt et al utilized dye instillation into the stomach to look for extraesophageal regurgitation in patients undergoing general anesthesia [17,18]. They found a regurgitation rate of 14.5% and 7.8% respectively.…”

Section: Discussionmentioning

confidence: 99%

Documenting the Hypopharyngeal Environment of Patients Undergoing General Endotracheal Tube Anesthesia: A First Look at Intraoperative pH Characteristics

Regenbogen¹

2015

Otolaryngol (Sunnyvale)

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OtolaryngologyOto la ry n g ol ogy: Op en A c ce ss ISSN: 2161-119XRegenbogen et al., Otolaryngology 2015, 5 AbstractObjectives: While laryngeal injuries are important and not infrequent following both short and extended endotracheal tube exposure, little detailed information is available regarding the hypopharyngeal environment during intubation. The objective of this pilot study was to explore a simple method of accurately documenting hypopharyngeal pH values in surgical patients undergoing endotracheal tube anesthesia and to report the findings.Methods: Twenty volunteers were continuously monitored intra-operatively using a commercially available hypopharyngeal pH monitoring system. Demographics, pre-and postoperative voice and reflux self reported survey data were also collected. Results:No complications associated with the pH monitoring system occurred. Median pH was 6.5 (range 6.0-7.0); median recorded time in minutes was 183.9 (range 130.7 -323.5). 13/20 patients had pH>5.0 ≤ 5.5 events, for up to 113 minutes of monitored time; 2/20 patients had pH>4.0 ≤ 5.0 events, for up to 8 minutes of monitored time; 2/20 patients had pH ≤ 4.0 events, for up to 61 minutes of monitored time. Conclusions:The hypopharyngeal pH test was used successfully to intra-operatively record hypopharyngeal pH variations. Extended pharyngeal exposures to low pH environments were commonly documented. No associations were found with patient survey scores. Future research appears warranted to expand this study, identify "at-risk" populations and to rigorously evaluate an expanded set of voice-related and lower airway clinical outcomes measures.

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“…19.zo This method of detection was abandoned in the pilot phase of the present study because of the difficulty in swallowing the capsules and the unpredictable mixing with gastric contents when administered "on call." Careful inspection of the pharynx with the newer, brightly lighted, laryngoscopes was used instead and correlated with continuous pH monitoring.…”

Section: Discussionmentioning

confidence: 99%

Occurrence of gastroesophageal reflux on induction of anaesthesia does not correlate with the volume of gastric contents

1990

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???Silent??? Regurgitation and Aspiration During General Anesthesia

Cited by 70 publications

References 0 publications

Gastric regurgitation during general anaesthesia in different positions with the laryngeal mask airway

Gastric regurgitation during general anaesthesia in different positions with the laryngeal mask airway

Documenting the Hypopharyngeal Environment of Patients Undergoing General Endotracheal Tube Anesthesia: A First Look at Intraoperative pH Characteristics

Occurrence of gastroesophageal reflux on induction of anaesthesia does not correlate with the volume of gastric contents

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