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Capnography monitoring the hypoventilation during the induction of bronchoscopic sedation: A randomized controlled trial.

ABSTRACT: We hypothesize that capnography could detect hypoventilation during induction of bronchoscopic sedation and starting bronchoscopy following hypoventilation, may decrease hypoxemia. Patients were randomized to: starting bronchoscopy when hypoventilation (hypopnea, two successive breaths of at least 50% reduction of the peak wave compared to baseline or apnea, no wave for 10?seconds) (Study group, n?=?55), or when the Observer Assessment of Alertness and Sedation scale (OAAS) was less than 4 (Control group, n?=?59). Propofol infusion was titrated to maintain stable vital signs and sedative levels. The hypoventilation during induction in the control group and the sedative outcome were recorded. The patient characteristics and procedures performed were similar. Hypoventilation was observed in 74.6% of the patients before achieving OAAS?

SUBMITTER: Lin TY

PROVIDER: S-EPMC5561208 | biostudies-literature | 2017 Aug

REPOSITORIES: biostudies-literature

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Capnography monitoring the hypoventilation during the induction of bronchoscopic sedation: A randomized controlled trial.

Lin Ting-Yu TY Fang Yueh-Fu YF Huang Shih-Hao SH Wang Tsai-Yu TY Kuo Chih-Hsi CH Wu Hau-Tieng HT Kuo Han-Pin HP Lo Yu-Lun YL

Scientific reports 20170817 1

We hypothesize that capnography could detect hypoventilation during induction of bronchoscopic sedation and starting bronchoscopy following hypoventilation, may decrease hypoxemia. Patients were randomized to: starting bronchoscopy when hypoventilation (hypopnea, two successive breaths of at least 50% reduction of the peak wave compared to baseline or apnea, no wave for 10 seconds) (Study group, n = 55), or when the Observer Assessment of Alertness and Sedation scale (OAAS) was less than 4 (Cont ...[more]

PMID: 28819181

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Project description:ObjectiveTo evaluate the effect of capnography monitoring on sedation-related adverse events during procedural sedation and analgesia (PSA) administered for ambulatory surgery relative to visual assessment and pulse oximetry alone.Design and settingSystematic literature review and random effects meta-analysis of randomised controlled trials (RCTs) reporting sedation-related adverse event incidence when adding capnography to visual assessment and pulse oximetry in patients undergoing PSA during ambulatory surgery in the hospital setting. Searches for eligible studies published between 1 January 1995 and 31 December 2016 (inclusive) were conducted in PubMed, the Cochrane Library and EMBASE without any language constraints. Searches were conducted in January 2017, screening and data extraction were conducted by two independent reviewers, and study quality was assessed using a modified Jadad scale.InterventionsCapnography monitoring relative to visual assessment and pulse oximetry alone.Primary and secondary outcome measuresPredefined endpoints of interest were desaturation/hypoxaemia (the primary endpoint), apnoea, aspiration, bradycardia, hypotension, premature procedure termination, respiratory failure, use of assisted/bag-mask ventilation and death during PSA.ResultsThe literature search identified 1006 unique articles, of which 13 were ultimately included in the meta-analysis. Addition of capnography to visual assessment and pulse oximetry was associated with a significant reduction in mild (risk ratio (RR) 0.77, 95%?CI 0.67 to 0.89) and severe (RR 0.59, 95%?CI 0.43 to 0.81) desaturation, as well as in the use of assisted ventilation (OR 0.47, 95%?CI 0.23 to 0.95). No significant differences in other endpoints were identified.ConclusionsMeta-analysis of 13 RCTs published between 2006 and 2016 showed a reduction in respiratory compromise (from respiratory insufficiency to failure) during PSA with the inclusion of capnography monitoring. In particular, use of capnography was associated with less mild and severe oxygen desaturation, which may have helped to avoid the need for assisted ventilation.

Project description:The purpose of this study was to compare the efficacy and safety of dexmedetomidine versus remifentanil for sedation during awake intubation using a Shikani optical stylet (SOS).Sixty-eight patients with cervical trauma or severe cervical spondylosis undergoing cervical spinal surgery were enrolled in this prospective study. They were randomly assigned to receive dexmedetomidine (Group D) or remifentanil (Group R). In Group D, the patients received an intravenous loading dose of dexmedetomidine 1 μg · kg(-1) over 10 min followed by a continuous infusion of 0.7 μg · kg(-1) · h(-1). In Group R, a target-controlled infusion of remifentanil was administered to achieve a plasma concentration of 2.5 ng · ml(-1), increased to 3 ng · ml(-1) 10 min later. An endotracheal tube was inserted using a SOS under dexmedetomidine or remifentanil sedation after topical anesthesia to the airway. Midazolam was given as rescue sedation. We recorded the first attempt intubation success rate, the dose of midazolam, duration of intubation, Ramsay Sedation Scale (RSS) score, tracheal tube tolerance score, duration of drug infusion, adverse events and patient satisfaction score.The RSS score was significantly higher in Group D than in Group R. First attempt success rate, rescue midazolam dose and the duration of intubation did not differ between the groups. Patients in Group R were significantly more tolerant of the tracheal tube. The incidence of hypoxia was significantly higher in Group R than Group D, but there was no significant difference in the incidence of other adverse events between the groups. The hemodynamic responses of the two groups were similar, but more patients in Group R were able to recall airway instrumentation.Both dexmedetomidine and remifentanil are effective sedatives for awake intubation using an SOS. Although the first attempt success rates were similar, patients sedated with remifentanil tolerated the tracheal tube better after intubation with moderately increased risk of desaturation.www.chictr.org.cn ; ChiCTR-TRC-13003052 (February 4th, 2013).

Dataset Information

Capnography monitoring the hypoventilation during the induction of bronchoscopic sedation: A randomized controlled trial.

Publications

Capnography monitoring the hypoventilation during the induction of bronchoscopic sedation: A randomized controlled trial.

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