Trial reportDigestive diseases and sciences2012
The questionable efficacy of topical pharyngeal anesthesia in combination with propofol sedation in gastroscopy.
Trial report in Digestive diseases and sciences, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
2 citing papers in PubMed, 15 citations in OpenAlex.
- Conscious analgesia with oxycodone improves the efficacy and safety in patients at high risk of aspiration during gastroscopy: a randomized double-blind trial.BMC anesthesiology · 2026Trial
- Relation of viscous lidocaine combined with propofol deep sedation during elective upper gastrointestinal endoscopy to discharge.Proceedings (Baylor University. Medical Center) · 2019Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundTopical pharyngeal anesthesia as an adjunct to intravenous sedation to facilitate gastroscopy has been widely acknowledged; however, its efficacy has not been established when it is used in patients under deep sedation with propofol.
aimsTo demonstrate the limited value of topical pharyngeal anesthesia in patients under moderate to deep sedation with propofol.
methodsOne hundred and twenty-nine patients undergoing gastroscopy were prospectively randomized to receive 10 % lidocaine or distilled water topical spray as an adjunct to intravenous propofol via target-controlled infusion. Verbal and somatic responsiveness, presence of gag reflex and hiccup to esophageal intubation, and the overall ease of the procedure were evaluated by the anaesthetists and gastroenterologists. Hemodynamic parameters including peripheral oxygen saturation, systolic/diastolic blood pressure (SBP/DBP), heart rate (HR), bispectral index, and SBP × HR were compared at 5 time points: on arrival, after 5 spontaneous breaths, when estimated brain concentration of propofol, Ce, reached 3.5 μg/ml, on esophageal intubation, and on awakening.
resultsNo statistical difference was observed between the lidocaine and distilled water group in verbal or somatic responses, gag reflex or hiccups on esophageal intubation. Similarly, BIS, SBP, DBP, and HR showed no significant difference between the groups.
conclusionsThe use of topical pharyngeal anesthesia in combination with target-controlled infusion with propofol in the performance of diagnostic gastroscopy might be eliminated without adversely affecting patient care or outcomes.
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Registered trials
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