A randomized study found placebo throat spray noninferior under its selected margin. That result did not establish that all local anesthesia is unnecessary for every endoscopic setting.
The comparison
Patients received lidocaine spray or saline before endoscopic ultrasound with sedation and analgesics. Tolerance was assessed separately by patients and endoscopists, using a fifteen-percent noninferiority margin.
The placebo group met the study’s noninferiority criterion. Midazolam and pethidine requirements were among secondary outcomes, without a significant between-group difference reported.
What the result applies to
The conclusion depends on the specified tolerance definition, margin, patient selection, and co-medication. It is not proof of exactly equal tolerance or equivalent respiratory risk.
Sedation-related amnesia can affect recall-based satisfaction. Technical differences among endoscopists and lack of comparisons with other local-anesthetic forms also limit generalization. For interpretation, retain the entire sedation–analgesia regimen. This study did not compare midazolam against no sedation or show that omitting a throat spray makes a procedure free of discomfort or complications.
Source paper
Original analysis of the supplied journal article, identified as PMC12829627.
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