Abstract：
BACKGROUND:Topical 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. AIMS:To demonstrate the limited value of topical pharyngeal anesthesia in patients under moderate to deep sedation with propofol. METHODS:One 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. RESULTS:No 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. CONCLUSIONS:The 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.
journal_name
Dig Dis Scijournal_title
Digestive diseases and sciencesauthors
Tsai HI,Tsai YF,Liou SC,Su MY,Lin CC,Chang CJ,Yu HPdoi
10.1007/s10620-012-2206-4subject
Has Abstractpub_date
2012-10-01 00:00:00pages
2519-26issue
10eissn
0163-2116issn
1573-2568journal_volume
57pub_type
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