extubation | The Journal of Critical Care Medicine

Effect of sleep quality on weaning from
mechanical ventilation: A scoping review

Hana Locihová¹, Darja Jarošová², Karolína Šrámková³, Jana Slonková⁴, Renáta Zoubková⁵, Klára Maternová⁶, Karel Šonka⁷

1 Department of Anesthesiology, Resuscitation and Intensive Care Medicine, Faculty of Medicine, University of Ostrava, Ostrava -Vítkovice, Czech Republic; Department of Nursing and Midwifery, Faculty of Medicine, University of Ostrava, Ostrava – Vítkovice, Czech Republic
2 Department of Nursing and Midwifery, Faculty of Medicine, University of Ostrava, Ostrava – Vítkovice, Czech Republic
3 Department of Neurology, University Hospital Ostrava, Ostrava -Vítkovice, Czech Republic
4 Department of Neurology, University Hospital Ostrava; Department of Clinical Neurosciences, Faculty of Medicine, University of Ostrava, Ostrava -Vítkovice, Czech Republic
5 Department of Anesthesiology, Resuscitation and Intensive Care Medicine, Faculty of Medicine, University of Ostrava; Department of Anesthesiology, Resuscitation and Intensive Care Medicine, University Hospital Ostrava, Ostrava -Vítkovice, Czech Republic
6 2nd Department of Surgery – Department of Cardiovascular Surgery, First Faculty of Medicine, Charles University, General University Hospital in Prague, Prague, Czech Republic
7 Department of Neurology and Center of Clinical Neurosciences, First Faculty of Medicine, Charles University, General University Hospital in Prague, Prague, Czech Republic

DOI: 10.2478/jccm-2024-0043

Introduction: Mechanically ventilated patients have disturbed sleep.
Aim of the study: To explore whether there is a relationship between successful or unsuccessful weaning of patients and their sleep quality and circadian rhythm.
Materials and Methods: A scoping review. The search process involved four online databases: CINAHL, MEDLINE, ProQuest, and ScienceDirect. Original studies published between January 2020 and October 2022 were included in the review.
Results: Six studies met the inclusion criteria. These studies showed that patients with difficult weaning were more likely to have atypical sleep, shorter REM sleep, and reduced melatonin metabolite excretion. Muscle weakness was an independent factor associated with prolonged weaning from mechanical ventilation and was significantly more frequent in patients with atypical sleep. Heterogeneous patient samples and the methodology of the studies hamper a clear interpretation of the results.
Conclusions: A relationship was found between abnormal sleep patterns, reduced melatonin metabolite (6-sulfatoxymelatonin) excretion, and unsuccessful weaning. However, the causality is not clear from the existing research.

Neurological Critical Care Services’ Influence Following Large Hemispheric Infarction and Their Impact on Resource Utilization

Syed Omar Shah^1,2,3,4, Yu Kan Au¹, Fred Rincon^1,2,3,4, Matthew Vibbert^1,2,3,4

1 Department of Neurology, Thomas Jefferson University, Philadelphia, PA USA
2 Department of Neurosurgery, Thomas Jefferson University, Philadelphia, PA USA
3 Divisions of Critical Care and Neurotrauma, Thomas Jefferson University, Philadelphia, PA USA
4 Department of Cerebrovascular Diseases, Thomas Jefferson University, Philadelphia, PA USA

DOI: 10.2478/jccm-2018-0001

Introduction: Acute ischemic stroke (AIS) is the fourth leading cause of death in the US. Numerous studies have demonstrated the use of comprehensive stroke units and neurological intensive care units (NICU) in improving outcomes after stroke. We hypothesized that an expanded neurocritical care (NCC) service would decrease resource utilization in patients with LHI.
Methods: Retrospective data from consecutive admissions of large hemispheric infarction (LHI) patients requiring mechanical ventilation were acquired from the hospital medical records. Between 2011-2013, there were 187 consecutive patients admitted to the Jefferson Hospital for Neuroscience (Philadelphia, USA) with AIS and acute respiratory failure. Our intention was to determine the number of tracheostomies done over time. The primary outcome measure was the number of tracheostomies over time. Secondary outcomes were, ventilator-free days (Vfd), total hospital charges, intensive care unit length of stay (ICU-LOS), and total hospital length of stay (hospital-LOS), including ICU LOS. Hospital charges were log-transformed to meet assumptions of normality and homoscedasticity of residual variance terms. Generalized Linear Models were used and ORs and 95% CIs calculated. The significance level was set at α = 0.05.
Results: Of the 73 patients included in this analysis, 33% required a tracheostomy. There was a decrease in the number of tracheostomies undertaken since 2011. (OR 0.8; 95% CI 0.6-0.9: p=0.02). Lower Vfd were seen in tracheostomized patients (OR 0.11; 95%CI 0.1-0.26: p<0.0001). The log-hospital charges decreased over time but not significantly (OR 0.9; 95%CI 0.78-1.07: p=0.2) and (OR 0.99; 95%CI 0.85-1.16: p=0.8) from 2012 to 2013 respectively.
The ICU-LOS at 23 days vs 10 days (p=0.01) and hospital-LOS at 33 days vs 11 days (p=0.008) were higher in tracheostomized patients.
Conclusion: The data suggest that in LHI-patients requiring mechanical ventilation, a dedicated NCC service reduces the overall need for tracheostomy, increases Vfd, and decreases ICU and hospital-LOS.