Evaluation of Effect of Different Ventilator Mods on Atelectasis in Patients Undergoing Laparoscopic Surgery

Evaluation of Effect of Different Ventilator Mods on Atelectasis in Patients Undergoing Laparoscopic Surgery: a Prospective Randomized Controlled Clinical Trial

Status

Completed

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT03614845

Acronym

PCV-VG

Enrollment

Registered

2018-08-03

Start date

2018-09-01

Completion date

2019-09-15

Last updated

2019-11-26

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Atelectasis, Atelectases, Postoperative Pulmonary

Keywords

postoperative atelectasis, mechanical ventilation, laparoscopic surgery, lung ultrasonography, volume controlled ventilation, pressure controlled

Brief summary

In this study researchers aim to evaluate effect of different ventilation modalities on the developments of atelectasis by using ultrasound.

Detailed description

Patients undergoing laparoscopic surgery will be randomly assigned either volume controlled ventilation group or pressure controlled volume guaranteed ventilation group. All patients will be performed lung ultrasonography pre and postoperatively to evaluate the development of lung atelectasis and effect of different ventilation modalities on the development of atelectasis.

Interventions

PROCEDUREVCV

after induction for anesthesia patients will be supported by mechanical ventilation on volume controlled ventilation mode

PROCEDUREPCV-VG

after induction for anesthesia patients will be supported by mechanical ventilation on pressure controlled and volume guaranteed ventilation mode

DIAGNOSTIC_TESTlung ultrasonography

all patients will be performed lung ultrasonography pre and postoperatively

Study design

Allocation

RANDOMIZED

Intervention model

PARALLEL

Primary purpose

PREVENTION

Masking

NONE

Eligibility

Sex/Gender

ALL

Age

18 Years to 75 Years

Healthy volunteers

Yes

Inclusion criteria

* undergoing laparoscopic surgery * ASA Status I-II

Exclusion criteria

* Gastroesophageal reflux * obstructive sleep apnea syndrome * BMI\>30 * severe lung and heart disease * ASA Status III-IV

Design outcomes

Primary

Measure	Time frame	Description
Effect of different ventilation mods on development of peroperative atelectasis	at minute 5 in postoperative care unit	Patients undergoing laparoscopic surgery will be assigned either volume controlled mode or pressure support volume guaranteed mode. After the operation a researcher will perform lung ultrasonography postoperative at minute 5. Researcher will detect 6 region of each lung totally 12 regions . The researcher will record the modified and original lung ultrasonography scores (LUS Score) of the patients. LUS Score is a scoring system to evaluate atelectasis of lung and scores 1-3 points for each region (Min score 0 max score 36)

Secondary

Measure	Time frame	Description
Effect of different ventilation mods on development of peroperative atelectasis	at minute 30 in postoperative care unit	Patients undergoing laparoscopic surgery will be assigned either volume controlled mode or pressure support volume guaranteed mode. After the operation a researcher will perform lung ultrasonography in postoperative care unit at minute 30. Researcher will detect 6 region of each lung totally 12 regions . The researcher will record the modified and original lung ultrasonography scores (LUS Score) of the patients. LUS Score is a scoring system to evaluate atelectasis of lung and scores 1-3 points for each region.(Min score 0 max score 36)

Countries

Turkey (Türkiye)

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026