Can a Two-Drug throat spray calm the cough when breathing tubes come out?
NCT ID NCT07832214
First seen Sep 21, 2026 · Last updated Sep 21, 2026
Summary
Researchers test whether spraying a mix of dexmedetomidine and lidocaine into the throat reduces coughing when a breathing tube is removed after thyroid surgery. The trial enrolls 120 women aged 18 to 65 having elective thyroidectomy under general anesthesia. Participants receive either the combined spray, lidocaine alone, or a saline placebo, and the team measures how often and how severely patients cough during and just after tube removal.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- A throat spray combining dexmedetomidine with lidocaine
- What this could lead to
- If it works, this spray could become a simple way to reduce coughing and throat discomfort when breathing tubes come out after surgery.
- What could go wrong
- This is a single-center study of 120 women having thyroid surgery, so results may not apply to other patients or operations. The spray could fail to beat lidocaine alone, and both drugs can cause side effects such as low blood pressure or allergic reactions.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 120 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Jul 2026
- Expected to finish
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Dec 2026
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 to 65 years
- Sex
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Female participants only
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Female patients aged 18-65 years * American Society of Anesthesiologists (ASA) physical status I-II * Scheduled for elective thyroidectomy under general anesthesia with endotracheal intubation * Provided written informed consent Exclusion Criteria: * Known allergy or contraindication to dexmedetomidine, lidocaine, or study medications * Pre-existing cough or respiratory tract infection within 2 weeks * History of chronic cough or reactive airway disease (asthma, COPD) * Significant cardiovascular disease (arrhythmias, uncontrolled hypertension, heart failure) * Hepatic or renal dysfunction (liver enzymes \>2× upper normal limit, creatinine \>1.5 mg/dL) * Pregnancy or breastfeeding * Anticipated difficult airway (Mallampati class III-IV, limited neck extension) * Preoperative use of antitussive medications or opioids * Body mass index \>35 kg/m² * Emergency surgery * Participation in another interventional trial within 30 days
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As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Faculty of Medicine, Sohag University
Sohag, Egypt
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