Tag Archives: delirium

Inhaled sevoflurane in critically ill COVID-19 patients: A retrospective cohort study

Jose J. Zaragoza1, Marco A. Baez-Garcia2,3, Jose M. Lomeli-Teran2,4, Daniela Anzures-Diaz2, Paola Zamudio-Cantellano2,4, Job H. Rodriguez-Guillen2,4

1 Hospital H+ Queretaro, Santiago de Querétaro, Mexico
2 Critical Care Department, Hospital H+ Queretaro, Queretaro, Mexico
3 Universidad Anahuac Queretaro, Queretaro, Mexico
4 Colegio Mexicano de Medicina Crítica, Benito Juárez, Mexico

DOI: 10.2478/jccm-2026-0011

Background: Managing sedation in critically ill COVID-19 patients is challenging due to high sedative requirements and organ dysfunction that alters drug metabolism. Inhaled sevoflurane offers a lung-eliminated alternative that may mitigate drug accumulation.
Methods: This single-center, retrospective cohort study analyzed 43 mechanically ventilated COVID-19 patients (March–November 2020). Patients received inhaled sevoflurane adjunctive to IV sedation (n=30) or IV sedation alone (n=13). The primary outcome was the cumulative dose of IV sedatives over 7 days. Secondary outcomes included time to extubation and antipsychotic use.
Results: There was no significant difference in the cumulative dose of IV sedatives between groups. However, the sevoflurane group had a significantly longer median duration of mechanical ventilation (206 [IQR 144-356] vs 144 [IQR 115-156] hours, p=0.005) and a higher requirement for antipsychotic medication (66.6% vs 15.3%, OR 18.6, p=0.011). Daily doses of propofol were lower in the sevoflurane group on specific days, but overall burden was unchanged.
Conclusions: In this cohort, adjunctive inhaled sevoflurane did not significantly reduce the cumulative burden of IV sedatives and was associated with delayed extubation and increased antipsychotic use. While sevoflurane is a feasible alternative, these findings suggest caution regarding weaning and delirium management in COVID-19 patients.

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Role of Quetiapine in the Prevention of ICU Delirium in Elderly Patients at a High Risk

Walid Y. Kamel1, Heba Y. Kamel2, Ibrahim M. Elsherif1

1 Department of Anesthesia, Intensive Care and Pain Management, Ain Shams University, Abbasiya, Cairo, Egypt
2 Geriatrics and Gerontology department, Faculty of Medicine, Ain Shams University, Abbasiya, Cairo, Egypt

DOI: 10.2478/jccm-2024-0032

Background: The aim of the present study was to denote the effectiveness of Quetiapine as additive to preventive bundle of delirium in elderly patients with multiple risks for delirium.
Patients and methods: The study was performed on 90 elderly patients over 60 years. The patients were divided into Group Q (Quetiapine) and Group C (No Quetiapine). Delirium was assessed using Intensive Care Delirium Screening Checklist (ICDSC) and the Confusion Assessment Method for the ICU (CAM-ICU).
Results: The incidence of delirium was significantly higher in group C. The severity of delirium was higher among group C; however, it was not statistically significant. The dominant type of delirium was hypoactive in group Q whereas hyperactive in group C. The interrater reliability between CAM-ICU-7 and ICDSE showed a kappa 0.98 denoting excellent correlation between the two scores. Somnolence was the most common side effect of Quetiapine (25%) followed by dry mouth (18%).
Conclusions: Prophylactic low dose of Quetiapine in elderly population in the preventive bundle could reduce the incidence of delirium with a low incidence of a major side effect, as well as CAM-ICU-7 is as effective as ICDSC in monitoring and early diagnosis of delirium.

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A Comparative Analysis of the Effects of Haloperidol and Dexmedetomidine on QTc Interval Prolongation during Delirium Treatment in Intensive Care Units

Ali Haspolat1, Fuat Polat2, Ali Şefik Köprülü3

1 Kolan International Hospital, İstanbul, Turkey
2 Dr Siyami Ersek Thoracic and Cardiovascular Surgery Training and Research Hospital, Istanbul, Turkey
3 Yeni Yuzyil University, İstanbul, Turkey

DOI: 10.2478/jccm-2024-0027

Background: Haloperidol and dexmedetomidine are used to treat delirium in the intensive care unit (ICU). The effects of these drugs on the corrected QT (QTc) interval have not been compared before. It was aimed to compare the effects of haloperidol and dexmedetomidine treatment on QTc intervals in patients who developed delirium during ICU follow-up.
Method: The study is single-center, randomized, and prospective. Half of the patients diagnosed with delirium in the ICU were treated with haloperidol and the other half with dexmedetomidine. The QTc interval was measured in the treatment groups before and after drug treatment. The study’s primary endpoints were maximal QT and QTc interval changes after drug administration.
Results: 90 patients were included in the study, the mean age was 75.2±12.9 years, and half were women. The mean time to delirium was 142+173.8 hours, and 53.3% of the patients died during their ICU follow-up. The most common reason for hospitalization in the ICU was sepsis (%37.8.). There was no significant change in QT and QTc interval after dexmedetomidine treatment (QT: 360.5±81.7, 352.0±67.0, p= 0.491; QTc: 409.4±63.1, 409.8±49.7, p=0.974). There was a significant increase in both QT and QTc interval after haloperidol treatment (QT: 363.2±51.1, 384.6±59.2, p=0.028; QTc: 409.4±50.9, 427.3±45.9, p=0.020).
Conclusions: Based on the results obtained from the study, it can be concluded that the administration of haloperidol was associated with a significant increase in QT and QTc interval. In contrast, the administration of dexmedetomidine did not cause a significant change in QT and QTc interval.

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Post-Operative Delirium Masking Acute Angle Closure Glaucoma

Zariel Jiaying Sim1, Xing Jieyin2, Thangavelautham Suhitharan2

1 Singhealth, Singapore, Singapore
2 Singapore General Hospital, Singapore, Singapore

DOI: 10.2478/jccm-2023-0016

Introduction: Acute angle closure glaucoma (AACG) is an ophthalmological emergency, and can lead to the devastating consequence of permanent vision loss if not detected and treated promptly. We present a case of an atypical presentation of unilateral AACG on post operative day (POD) 1, after a prolonged operation under general anaesthesia (GA).
Case presentation: A 65-year-old female underwent a 16 hour long operation for breast cancer and developed an altered mental status with a left fixed dilated pupil on POD 1. She was intubated to secure her airway in view of a depressed consciousness level and admitted to the intensive care unit. Initial blood investigations and brain imaging were unremarkable. On subsequent review by the ophthalmologist, a raised intraocular pressure was noted and she was diagnosed with acute angle closure glaucoma. She was promptly started on intravenous acetazolamide and pressure-lowering ophthalmic drops. Her intraocular pressure normalized in the next 24 hours with improvement in her mental status to baseline.
Conclusion: AACG needs to be consistently thought of as one of the top differentials in any post-operative patient with eye discomfort or abnormal ocular signs on examination. A referral to the ophthalmologist should be made promptly once AACG is suspected.

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