Evidence map›Paper›PMID 33069208›Full record

Observational studyBMC anesthesiology2020

Evaluation of alveolar recruitment maneuver on respiratory resistance during general anesthesia: a prospective observational study.

Junko Nakahira, Shoko Nakano, Toshiaki Minami

Registry-linked trialOpen access · goldAbstract readObservational Study
In one paragraph

Observational study in BMC anesthesiology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT07349784 (Effect of Automated Intraoperative Lung Recruitment Maneuvers on Atelectasis in Patients Undergoing Major Laparoscopic Surgery), which is not on this map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
2.8field-weighted citation impact, top 9% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT07349784 narecruitingnot on this mapstarted 2025, after this paper: background citation

Effect of Automated Intraoperative Lung Recruitment Maneuvers on Atelectasis in Patients Undergoing Major Laparoscopic Surgery: A Randomized Controlled Trial

TypeinterventionalSponsorBakirkoy Dr. Sadi Konuk Research and Training HospitalRan2025 to 2026Enrolled56ConditionsAtelectasis, Postoperative Pulmonary Complications (PPCs)ArmsAutomated Intraoperative Lung Recruitment Maneuvers
3 · Its place in the literature

Who cites it

5 citing papers in PubMed, 14 citations in OpenAlex.

  1. Trial
  2. Impact of Manual Sustained Inflation vs Stepwise PEEP on Pulmonary and Cerebral Outcomes in Carotid Endarterectomy Patients.Medical science monitor : international medical journal of experimental and clinical research · 2024
    Trial
  3. Article
  4. RecruitmentBMJ open · 2022
    Article
  5. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 1 institution in 1 country.

Junko NakahiraDepartment of Anesthesiology, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki, Osaka, 569-8686, Japan. ane052@osaka-med.ac.jp.ORCID 0000-0002-8896-356X
Shoko NakanoDepartment of Anesthesiology, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki, Osaka, 569-8686, Japan.
Toshiaki MinamiDepartment of Anesthesiology, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki, Osaka, 569-8686, Japan.
Osaka Medical and Pharmaceutical University · JP

Funding

KAKENHI (Grants-in-Aid for Scientific Research) from the Japan Society for the Promotion of Science 17K16761
6 · The paper itself

Abstract

backgroundAlveolar recruitment maneuvers enable easily reopening nonaerated lung regions via a transient elevation in transpulmonary pressure. To evaluate the effect of these maneuvers on respiratory resistance, we used an oscillatory technique during mechanical ventilation. This study was conducted to assess the effect of the alveolar recruitment maneuvers on respiratory resistance under routine anesthesia. We hypothesized that respiratory resistance at 5 Hz (R5) after the maneuver would be decreased after the lung aeration.

methodsAfter receiving the ethics committee's approval, we enrolled 33 patients who were classified with an American Society of Anesthesiologists physical status of 1, 2 or 3 and were undergoing general anesthesia for transurethral resection of a bladder tumor within a 12-month period from 2017 to 2018. The recruitment maneuver was performed 30 min after endotracheal intubation. The maneuver consisted of sustained manual inflation of the anesthesia reservoir bag to a peak inspiratory pressure of 40 cmH

resultsWe analyzed 31 patients (25 men and 6 women). R5 was 7.3 ± 1.6 cmH

conclusionThe recruitment maneuver decreased respiratory resistance and increased lung compliance during mechanical ventilation.

trial registrationName of registry: Japan Medical Association Center for Clinical Trials. TRIAL REGISTRATION NUMBER: reference JMA-IIA00136. Date of registration: 2 September 2013. URL of trial registry record: https://dbcentre3.jmacct.med.or.jp/JMACTR/App/JMACTRE02_04/JMACTRE02_04.aspx?kbn=3&seqno=3582.

Indexed as

Positive-Pressure RespirationAgedAirway ResistanceAnesthesia, GeneralFemaleHumansLung ComplianceMaleMiddle AgedProspective StudiesPulmonary AlveoliAlveolar recruitment maneuverForced oscillation techniqueRespiratory resistance

Identifiers

PMID33069208
PMCPMC7568405
OpenAlexW3093042599

What OpenQuestion holds

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Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.