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Related Experiment Video

Updated: Nov 12, 2025

Author Spotlight: Unraveling the Impact of Mechanical Ventilation on Diaphragm Function and Patient Outcomes
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Diaphragm Dysfunction After Cardiac Surgery: Reappraisal.

Driss Laghlam1, Minh Pierre Lê1, Alexandre Srour1

  • 1Department of Cardiology and Critical Care, Clinique Ambroise Paré, Neuilly-sur-Seine, France.

Journal of Cardiothoracic and Vascular Anesthesia
|March 19, 2021
PubMed
Summary

Postoperative diaphragmatic dysfunction (DD) occurred in 7.6% of cardiac surgery patients, increasing risks of pneumonia and longer ICU stays. Coronary artery bypass grafting (CABG) was a key risk factor for developing DD.

Keywords:
cardiac surgerycoronary bypass graftingdiaphragmatic dysfunctiondiaphragmatic paralysis

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Area of Science:

  • Cardiology
  • Thoracic Surgery
  • Critical Care Medicine

Background:

  • Postoperative diaphragmatic dysfunction (DD) is a recognized complication following cardiac surgery.
  • Understanding its incidence, risk factors, and outcomes is crucial for patient management and improving surgical results.

Purpose of the Study:

  • To re-investigate the incidence, risk factors, and outcomes of postoperative diaphragmatic dysfunction (DD) in patients undergoing cardiac surgery.
  • To identify specific surgical procedures and patient characteristics associated with DD.

Main Methods:

  • A single-center, retrospective observational study utilizing a prospectively collected database.
  • Inclusion of 3,577 patients who underwent cardiac surgery between January 2016 and September 2019.
  • Diaphragmatic dysfunction (DD) was confirmed using chest ultrasound, including a sniff test.

Main Results:

  • The incidence of symptomatic DD was 7.6% (272/3,577 patients).
  • Patients with DD exhibited higher rates of arterial hypertension, elevated BMI, and underwent coronary artery bypass grafting (CABG).
  • DD was significantly associated with increased postoperative pneumonia, reintubation, tracheotomy, noninvasive ventilation, prolonged mechanical ventilation, and extended ICU and hospital stays.

Conclusions:

  • The incidence of symptomatic DD after cardiac surgery is 7.6%.
  • DD is linked to significant respiratory complications and increased intensive care unit (ICU) length of stay.
  • Coronary artery bypass grafting (CABG), arterial hypertension, and higher BMI are principal factors associated with DD.