ArticleTrials2024
Effects of small-dose S-ketamine on anesthesia-induced atelectasis in patients undergoing general anesthesia accessed by lung ultrasound: study protocol for a randomized, double-blinded controlled trial.
Article in Trials, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04745286 (Effects of Small-dose S-ketamine on Anesthesia-induced Atelectasis in Patients Undergoing General Anesthesia Accessed by Pulmonary Ultrasound：Study Protocol for a Randomized, Double-blinded Controlled Trial), which is not on this map. Cited by 1 paper.
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Effects of Small-dose S-ketamine on Anesthesia-induced Atelectasis in Patients Undergoing General Anesthesia Accessed by Pulmonary Ultrasound：Study Protocol for a Randomized, Double-blinded Controlled Trial
Who cites it
1 citing paper in PubMed, 0 citations in OpenAlex.
- Pleiotropic modulation of the gut-brain-lung axis by ketamine and its enantiomers.Molecular psychiatry · 2026Review
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Authors and funding
8 authors at 1 institution in 1 country.
Funding
Abstract
backgroundAtelectasis after anesthesia induction in most patients undergoing general anesthesia may lead to postoperative pulmonary complications (PPCs) and affect postoperative outcomes. However, there is still no existing effective method used for the prevention of perioperative atelectasis. S-ketamine may prevent atelectasis due to airway smooth muscle relaxation and anti-inflammatory effects. Lung ultrasound is a portable and reliable bedside imaging technology for diagnosing anesthesia-induced atelectasis. The primary objective of this study is to assess whether a small dose of S-ketamine can reduce the incidence of atelectasis after intubation, and further investigate the effects of preventing the early formation of perioperative atelectasis and PPCs.
methodsThis is a single-institution, prospective, randomized controlled, parallel grouping, and double-blind study. From October 2020 to March 2022, 100 patients (18-60 years old) scheduled for elective surgery will be recruited from Beijing Tiantan Hospital, Capital Medical University, and randomly assigned to the S-ketamine group (group 1) and the normal saline group (group 2) at a ratio of 1:1. The label-masked agents will be administered 5 min before induction, and all patients will undergo a standardized general anesthesia protocol. Related data will be collected at three time points: after radial artery puncture (T1), 15 min after tracheal intubation (T2), and before extubation (T3). The primary outcome will be the total lung ultrasound scores (LUS) at T2. Secondary outcomes will include LUS in six chest regions at T2, total LUS at T3, arterial blood gas analysis results (PaCO DISCUSSION: This trial aims to explore whether a simple and feasible application of S-ketamine before the induction of general anesthesia can prevent atelectasis. The results of this study may provide new ideas and direct clinical evidence for the prevention and treatment of perioperative pulmonary complications during anesthesia.
trial registrationClinicalTrials.gov NCT04745286. Registered on February 9, 2021.
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