The Efficacy of P0.1-guided Sedation Protocol in Critically Ill Patients Receiving Invasive Mechanical Ventilation: A Randomized Controlled Trial

Critical Illness Clinical Trial

Official title:

The Efficacy of P0.1-guided Sedation Protocol in Critically Ill Patients Receiving Invasive Mechanical Ventilation: A Randomized Controlled Trial

Clinical Trial Details — Status: Recruiting

Administrative data

• NCT number: NCT06203405
• Other study ID #: SI915/2023
• Status: Recruiting
• Phase: N/A
• Start date: December 22, 2023
• Est. completion date: June 30, 2025

Study information

• Verified date: January 2024
• Source: Siriraj Hospital
• Contact: Natdanai Ketdao, MD
• Phone: +66880684998
• Email: natdke[@]kku.ac.th
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

This clinical trial aims to assess the efficacy of sedation protocol targeting optimal respiratory drive using P0.1 and arousal level compared with conventional sedation strategy (targeting arousal level alone) in patients requiring mechanical ventilation in the medical intensive care unit.

Description:

Objective: to assess the efficacy of sedation protocol targeting optimal respiratory drive using P0.1 and RASS score compared with conventional sedation strategy (targeting RASS score alone) in patients requiring mechanical ventilation in the medical intensive care unit The main questions it aims to answer are: • Will titration of sedation targeting optimal respiratory drive assessed by P0.1 and arousal level improve outcomes in patients requiring mechanical ventilation in the medical ICU? Study protocol Mechanically ventilated patients admitted to the medical ICU will be screened daily by the investigators. If the patients meet the eligibility criteria, they will be informed about the study protocol and potential risks and undergo informed consent. Then patients will be randomized in a 1:1 ratio and allocated to each study group (intervention and control group). - After allocation, patients will be monitored for arousal level using RASS score and respiratory drive by P0.1 measured automatically from mechanical ventilators during the study period. - Sedation and neuromuscular blocking agents used will be adjusted according to the group to which patients are allocated. - Intervention group: Adjustment of sedation and neuromuscular blocking agents to achieve the target of light sedation (RASS 0 to -2) and optimal P0.1 (1.5 to 3.5 cmH2O) for 48 hours - Control group: Adjustment of sedation to achieve the target of light sedation (RASS 0 to -2) alone for 48 hours Researchers will compare the outcomes (rate of successful extubation, ICU and hospital mortality, ICU and hospital length of stay, duration of mechanical ventilation, amount and duration of sedation used during the study period) between the above sedation protocol (interventional group) and conventional sedation strategy (control group)

Recruitment information / eligibility

• Status: Recruiting
• Enrollment: 214
• Est. completion date: June 30, 2025
• Est. primary completion date: February 1, 2025
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years and older

Eligibility

Inclusion Criteria:

1. Patients admitted to the medical intensive care unit at Department of Medicine, Siriraj Hospital

2. Age =18 years old

3. Receiving mechanical ventilation due to acute respiratory failure within 72 hours before enrollment (including patients receiving mechanical ventilation before ICU admission)

Exclusion Criteria:

1. Patients receiving mechanical ventilation due to indications other than acute respiratory failure, such as postoperative procedures or airway protection in comatose patients

2. Patients receiving mechanical ventilation for >72 hours before enrollment

3. Patients receiving neuromuscular blocking agents prior to randomization

4. Patients with impaired secretion clearance or upper airway obstruction anticipating a tracheostomy

5. Patients with severe metabolic acidosis (arterial pH <7.2) who do not have a plan for renal replacement therapy

6. Patients intubated for neurological conditions, including intracranial hypertension, intracranial hemorrhage, large cerebral infarction, status epilepticus, or neuromuscular diseases

7. Post-cardiac arrest patients

8. Patients with severe liver dysfunction, including acute fulminant liver failure or cirrhosis with the Child-Pugh score B or C

9. Patients who have a previous allergy to any of the opioid, sedation, or neuromuscular blocking drugs

10. Pregnancy

11. Patients with do-not-resuscitate (DNR) orders or decisions to withhold life-sustaining treatments

12. Patients who refuse to participate in the study or cannot identify legally authorized representatives (LAR) within 24 hours after enrollment

Related Conditions & MeSH terms

• Acute Lung Injury
• Critical Illness
• Lung Injury
• Mechanical Ventilation Complication
• Respiratory Distress Syndrome
• Respiratory Distress Syndrome, Adult
• Respiratory Distress Syndrome, Newborn
• Respiratory Failure
• Respiratory Insufficiency

Intervention

Procedure:
• Titrating sedation targeting both optimal P0.1 and appropriate arousal level
Sedation will be adjusted initially to target light sedation (RASS 0 to -2). Sedative drugs include IV fentanyl (25-75 mcg/h), midazolam (0.02- 0.1 mg/kg/h), propofol (5-50 mcg/kg/min), dexmedetomidine (0.2-0.7 mcg/kg/h). Deep sedation and neuromuscular blocking agents are allowed to facilitate mechanical ventilation adjustment in patients with refractory hypoxemia. Dose of cisatracurium is 0.15-0.2 mg/kg intravenous bolus, then continuous infusion at 5 -20 mg/h. Then sedation adjustment will be guided by P0.1 measurement. If P0.1 value of 1.5-3.5 cmH2O is achieved, no further adjustment is required. If P0.1 value <1.5, sedation will be reduced. If P0.1 value >3.5, sedation will be increased. If P0.1 value is still >3.5 with deep sedation, cisatracurium will be allowed and titrated until P0.1 value <3.5 cmH2O. The study protocol will be continued for 48 hours or until the patients are considered ready for weaning.

Drug:
• Fentanyl
Continuous intravenous infusion of fentanyl 25-75 micrograms/hour
• Midazolam
Continuous intravenous infusion of midazolam 0.02 - 0.1 milligrams/kilogram/hour
• Propofol
Continuous intravenous infusion of propofol 5 - 50 micrograms/kilogram/minute
• Dexmedetomidine
Continuous intravenous infusion of dexmedetomidine 0.2 - 0.7 micrograms/kilogram/hour
• Cisatracurium
Continuous intravenous infusion of cisatracurium 5 - 20 milligrams/hour

Locations

Country	Name	City	State
Thailand	Siriraj Hospital	Bangkok

Sponsors (1)

Lead Sponsor	Collaborator
Siriraj Hospital

Country where clinical trial is conducted

Thailand, 

References & Publications (37)

Barr J, Fraser GL, Puntillo K, Ely EW, Gelinas C, Dasta JF, Davidson JE, Devlin JW, Kress JP, Joffe AM, Coursin DB, Herr DL, Tung A, Robinson BR, Fontaine DK, Ramsay MA, Riker RR, Sessler CN, Pun B, Skrobik Y, Jaeschke R; American College of Critical Care Medicine. Clinical practice guidelines for the management of pain, agitation, and delirium in adult patients in the intensive care unit. Crit Care Med. 2013 Jan;41(1):263-306. doi: 10.1097/CCM.0b013e3182783b72. — View Citation

Beloncle F, Piquilloud L, Olivier PY, Vuillermoz A, Yvin E, Mercat A, Richard JC. Accuracy of P0.1 measurements performed by ICU ventilators: a bench study. Ann Intensive Care. 2019 Sep 13;9(1):104. doi: 10.1186/s13613-019-0576-x. — View Citation

Bertoni M, Spadaro S, Goligher EC. Monitoring Patient Respiratory Effort During Mechanical Ventilation: Lung and Diaphragm-Protective Ventilation. Crit Care. 2020 Mar 24;24(1):106. doi: 10.1186/s13054-020-2777-y. — View Citation

Boles JM, Bion J, Connors A, Herridge M, Marsh B, Melot C, Pearl R, Silverman H, Stanchina M, Vieillard-Baron A, Welte T. Weaning from mechanical ventilation. Eur Respir J. 2007 May;29(5):1033-56. doi: 10.1183/09031936.00010206. — View Citation

Brenner M, Mukai DS, Russell JE, Spiritus EM, Wilson AF. A new method for measurement of airway occlusion pressure. Chest. 1990 Aug;98(2):421-7. doi: 10.1378/chest.98.2.421. — View Citation

Brochard L, Slutsky A, Pesenti A. Mechanical Ventilation to Minimize Progression of Lung Injury in Acute Respiratory Failure. Am J Respir Crit Care Med. 2017 Feb 15;195(4):438-442. doi: 10.1164/rccm.201605-1081CP. — View Citation

Carteaux G, Parfait M, Combet M, Haudebourg AF, Tuffet S, Mekontso Dessap A. Patient-Self Inflicted Lung Injury: A Practical Review. J Clin Med. 2021 Jun 21;10(12):2738. doi: 10.3390/jcm10122738. — View Citation

Chanques G, Constantin JM, Devlin JW, Ely EW, Fraser GL, Gelinas C, Girard TD, Guerin C, Jabaudon M, Jaber S, Mehta S, Langer T, Murray MJ, Pandharipande P, Patel B, Payen JF, Puntillo K, Rochwerg B, Shehabi Y, Strom T, Olsen HT, Kress JP. Analgesia and sedation in patients with ARDS. Intensive Care Med. 2020 Dec;46(12):2342-2356. doi: 10.1007/s00134-020-06307-9. Epub 2020 Nov 10. — View Citation

Cheng KC, Hou CC, Huang HC, Lin SC, Zhang H. Intravenous injection of methylprednisolone reduces the incidence of postextubation stridor in intensive care unit patients. Crit Care Med. 2006 May;34(5):1345-50. doi: 10.1097/01.CCM.0000214678.92134.BD. Erratum In: Crit Care Med. 2007 May;35(5):1454. — View Citation

de Vries HJ, Tuinman PR, Jonkman AH, Liu L, Qiu H, Girbes ARJ, Zhang Y, de Man AME, de Grooth HJ, Heunks L. Performance of Noninvasive Airway Occlusion Maneuvers to Assess Lung Stress and Diaphragm Effort in Mechanically Ventilated Critically Ill Patients. Anesthesiology. 2023 Mar 1;138(3):274-288. doi: 10.1097/ALN.0000000000004467. — View Citation

Devlin JW, Skrobik Y, Gelinas C, Needham DM, Slooter AJC, Pandharipande PP, Watson PL, Weinhouse GL, Nunnally ME, Rochwerg B, Balas MC, van den Boogaard M, Bosma KJ, Brummel NE, Chanques G, Denehy L, Drouot X, Fraser GL, Harris JE, Joffe AM, Kho ME, Kress JP, Lanphere JA, McKinley S, Neufeld KJ, Pisani MA, Payen JF, Pun BT, Puntillo KA, Riker RR, Robinson BRH, Shehabi Y, Szumita PM, Winkelman C, Centofanti JE, Price C, Nikayin S, Misak CJ, Flood PD, Kiedrowski K, Alhazzani W. Clinical Practice Guidelines for the Prevention and Management of Pain, Agitation/Sedation, Delirium, Immobility, and Sleep Disruption in Adult Patients in the ICU. Crit Care Med. 2018 Sep;46(9):e825-e873. doi: 10.1097/CCM.0000000000003299. — View Citation

Dzierba AL, Khalil AM, Derry KL, Madahar P, Beitler JR. Discordance Between Respiratory Drive and Sedation Depth in Critically Ill Patients Receiving Mechanical Ventilation. Crit Care Med. 2021 Dec 1;49(12):2090-2101. doi: 10.1097/CCM.0000000000005113. — View Citation

Fan T, Wang G, Mao B, Xiong Z, Zhang Y, Liu X, Wang L, Yang S. Prophylactic administration of parenteral steroids for preventing airway complications after extubation in adults: meta-analysis of randomised placebo controlled trials. BMJ. 2008 Oct 20;337:a1841. doi: 10.1136/bmj.a1841. — View Citation

Goligher EC, Jonkman AH, Dianti J, Vaporidi K, Beitler JR, Patel BK, Yoshida T, Jaber S, Dres M, Mauri T, Bellani G, Demoule A, Brochard L, Heunks L. Clinical strategies for implementing lung and diaphragm-protective ventilation: avoiding insufficient and excessive effort. Intensive Care Med. 2020 Dec;46(12):2314-2326. doi: 10.1007/s00134-020-06288-9. Epub 2020 Nov 2. — View Citation

Grasselli G, Calfee CS, Camporota L, Poole D, Amato MBP, Antonelli M, Arabi YM, Baroncelli F, Beitler JR, Bellani G, Bellingan G, Blackwood B, Bos LDJ, Brochard L, Brodie D, Burns KEA, Combes A, D'Arrigo S, De Backer D, Demoule A, Einav S, Fan E, Ferguson ND, Frat JP, Gattinoni L, Guerin C, Herridge MS, Hodgson C, Hough CL, Jaber S, Juffermans NP, Karagiannidis C, Kesecioglu J, Kwizera A, Laffey JG, Mancebo J, Matthay MA, McAuley DF, Mercat A, Meyer NJ, Moss M, Munshi L, Myatra SN, Ng Gong M, Papazian L, Patel BK, Pellegrini M, Perner A, Pesenti A, Piquilloud L, Qiu H, Ranieri MV, Riviello E, Slutsky AS, Stapleton RD, Summers C, Thompson TB, Valente Barbas CS, Villar J, Ware LB, Weiss B, Zampieri FG, Azoulay E, Cecconi M; European Society of Intensive Care Medicine Taskforce on ARDS. ESICM guidelines on acute respiratory distress syndrome: definition, phenotyping and respiratory support strategies. Intensive Care Med. 2023 Jul;49(7):727-759. doi: 10.1007/s00134-023-07050-7. Epub 2023 Jun 16. — View Citation

Hernandez G, Vaquero C, Colinas L, Cuena R, Gonzalez P, Canabal A, Sanchez S, Rodriguez ML, Villasclaras A, Fernandez R. Effect of Postextubation High-Flow Nasal Cannula vs Noninvasive Ventilation on Reintubation and Postextubation Respiratory Failure in High-Risk Patients: A Randomized Clinical Trial. JAMA. 2016 Oct 18;316(15):1565-1574. doi: 10.1001/jama.2016.14194. Erratum In: JAMA. 2016 Nov 15;316(19):2047-2048. JAMA. 2017 Feb 28;317(8):858. — View Citation

Jackson DL, Proudfoot CW, Cann KF, Walsh TS. The incidence of sub-optimal sedation in the ICU: a systematic review. Crit Care. 2009;13(6):R204. doi: 10.1186/cc8212. Epub 2009 Dec 16. — View Citation

Kassis EB, Beitler JR, Talmor D. Lung-protective sedation: moving toward a new paradigm of precision sedation. Intensive Care Med. 2023 Jan;49(1):91-94. doi: 10.1007/s00134-022-06901-z. Epub 2022 Oct 14. No abstract available. — View Citation

Klompas M, Branson R, Cawcutt K, Crist M, Eichenwald EC, Greene LR, Lee G, Maragakis LL, Powell K, Priebe GP, Speck K, Yokoe DS, Berenholtz SM. Strategies to prevent ventilator-associated pneumonia, ventilator-associated events, and nonventilator hospital-acquired pneumonia in acute-care hospitals: 2022 Update. Infect Control Hosp Epidemiol. 2022 Jun;43(6):687-713. doi: 10.1017/ice.2022.88. Epub 2022 May 20. — View Citation

Lee CH, Peng MJ, Wu CL. Dexamethasone to prevent postextubation airway obstruction in adults: a prospective, randomized, double-blind, placebo-controlled study. Crit Care. 2007;11(4):R72. doi: 10.1186/cc5957. — View Citation

Marra A, Ely EW, Pandharipande PP, Patel MB. The ABCDEF Bundle in Critical Care. Crit Care Clin. 2017 Apr;33(2):225-243. doi: 10.1016/j.ccc.2016.12.005. — View Citation

Matthay MA, Arabi Y, Arroliga AC, Bernard G, Bersten AD, Brochard LJ, Calfee CS, Combes A, Daniel BM, Ferguson ND, Gong MN, Gotts JE, Herridge MS, Laffey JG, Liu KD, Machado FR, Martin TR, McAuley DF, Mercat A, Moss M, Mularski RA, Pesenti A, Qiu H, Ramakrishnan N, Ranieri VM, Riviello ED, Rubin E, Slutsky AS, Thompson BT, Twagirumugabe T, Ware LB, Wick KD. A New Global Definition of Acute Respiratory Distress Syndrome. Am J Respir Crit Care Med. 2023 Jul 24. doi: 10.1164/rccm.202303-0558WS. Online ahead of print. — View Citation

Murray JF, Matthay MA, Luce JM, Flick MR. An expanded definition of the adult respiratory distress syndrome. Am Rev Respir Dis. 1988 Sep;138(3):720-3. doi: 10.1164/ajrccm/138.3.720. No abstract available. Erratum In: Am Rev Respir Dis 1989 Apr;139(4):1065. — View Citation

National Heart, Lung, and Blood Institute PETAL Clinical Trials Network; Moss M, Huang DT, Brower RG, Ferguson ND, Ginde AA, Gong MN, Grissom CK, Gundel S, Hayden D, Hite RD, Hou PC, Hough CL, Iwashyna TJ, Khan A, Liu KD, Talmor D, Thompson BT, Ulysse CA, Yealy DM, Angus DC. Early Neuromuscular Blockade in the Acute Respiratory Distress Syndrome. N Engl J Med. 2019 May 23;380(21):1997-2008. doi: 10.1056/NEJMoa1901686. Epub 2019 May 19. — View Citation

Papazian L, Klompas M, Luyt CE. Ventilator-associated pneumonia in adults: a narrative review. Intensive Care Med. 2020 May;46(5):888-906. doi: 10.1007/s00134-020-05980-0. Epub 2020 Mar 10. — View Citation

Pluijms WA, van Mook WN, Wittekamp BH, Bergmans DC. Postextubation laryngeal edema and stridor resulting in respiratory failure in critically ill adult patients: updated review. Crit Care. 2015 Sep 23;19(1):295. doi: 10.1186/s13054-015-1018-2. — View Citation

Rittayamai N, Beloncle F, Goligher EC, Chen L, Mancebo J, Richard JM, Brochard L. Effect of inspiratory synchronization during pressure-controlled ventilation on lung distension and inspiratory effort. Ann Intensive Care. 2017 Oct 6;7(1):100. doi: 10.1186/s13613-017-0324-z. — View Citation

Sandhu RS, Pasquale MD, Miller K, Wasser TE. Measurement of endotracheal tube cuff leak to predict postextubation stridor and need for reintubation. J Am Coll Surg. 2000 Jun;190(6):682-7. doi: 10.1016/s1072-7515(00)00269-6. — View Citation

Seo Y, Lee HJ, Ha EJ, Ha TS. 2021 KSCCM clinical practice guidelines for pain, agitation, delirium, immobility, and sleep disturbance in the intensive care unit. Acute Crit Care. 2022 Feb;37(1):1-25. doi: 10.4266/acc.2022.00094. Epub 2022 Feb 28. — View Citation

Singh A, Anjankar AP. Propofol-Related Infusion Syndrome: A Clinical Review. Cureus. 2022 Oct 17;14(10):e30383. doi: 10.7759/cureus.30383. eCollection 2022 Oct. — View Citation

Sklienka P, Frelich M, Bursa F. Patient Self-Inflicted Lung Injury-A Narrative Review of Pathophysiology, Early Recognition, and Management Options. J Pers Med. 2023 Mar 28;13(4):593. doi: 10.3390/jpm13040593. — View Citation

Spinelli E, Mauri T, Beitler JR, Pesenti A, Brodie D. Respiratory drive in the acute respiratory distress syndrome: pathophysiology, monitoring, and therapeutic interventions. Intensive Care Med. 2020 Apr;46(4):606-618. doi: 10.1007/s00134-020-05942-6. Epub 2020 Feb 3. — View Citation

Spinelli E, Pesenti A, Slobod D, Fornari C, Fumagalli R, Grasselli G, Volta CA, Foti G, Navalesi P, Knafelj R, Pelosi P, Mancebo J, Brochard L, Mauri T. Clinical risk factors for increased respiratory drive in intubated hypoxemic patients. Crit Care. 2023 Apr 11;27(1):138. doi: 10.1186/s13054-023-04402-z. — View Citation

Telias I, Junhasavasdikul D, Rittayamai N, Piquilloud L, Chen L, Ferguson ND, Goligher EC, Brochard L. Airway Occlusion Pressure As an Estimate of Respiratory Drive and Inspiratory Effort during Assisted Ventilation. Am J Respir Crit Care Med. 2020 May 1;201(9):1086-1098. doi: 10.1164/rccm.201907-1425OC. — View Citation

Tongyoo S, Tantibundit P, Daorattanachai K, Viarasilpa T, Permpikul C, Udompanturak S. High-flow nasal oxygen cannula vs. noninvasive mechanical ventilation to prevent reintubation in sepsis: a randomized controlled trial. Ann Intensive Care. 2021 Sep 14;11(1):135. doi: 10.1186/s13613-021-00922-5. — View Citation

Wongtangman K, Grabitz SD, Hammer M, Wachtendorf LJ, Xu X, Schaefer MS, Fassbender P, Santer P, Kassis EB, Talmor D, Eikermann M; SICU Optimal Mobilization Team (SOMT) Group. Optimal Sedation in Patients Who Receive Neuromuscular Blocking Agent Infusions for Treatment of Acute Respiratory Distress Syndrome-A Retrospective Cohort Study From a New England Health Care Network. Crit Care Med. 2021 Jul 1;49(7):1137-1148. doi: 10.1097/CCM.0000000000004951. — View Citation

Writing Group for the PReVENT Investigators; Simonis FD, Serpa Neto A, Binnekade JM, Braber A, Bruin KCM, Determann RM, Goekoop GJ, Heidt J, Horn J, Innemee G, de Jonge E, Juffermans NP, Spronk PE, Steuten LM, Tuinman PR, de Wilde RBP, Vriends M, Gama de Abreu M, Pelosi P, Schultz MJ. Effect of a Low vs Intermediate Tidal Volume Strategy on Ventilator-Free Days in Intensive Care Unit Patients Without ARDS: A Randomized Clinical Trial. JAMA. 2018 Nov 13;320(18):1872-1880. doi: 10.1001/jama.2018.14280. — View Citation

* Note: There are 37 references in all — Click here to view all references

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Successful extubation within 14 days after randomization	Successful extubation within 14 days without reintubation within 28 days after ICU admission	14 days after randomization
Secondary	Successful extubation within 7 days after randomization	Successful extubation within 7 days without reintubation within 28 days after ICU admission	7 days after randomization
Secondary	Successful extubation within 28 days after randomization	Successful extubation without reintubation within 28 days after ICU admission	28 days after randomization
Secondary	Duration of mechanical ventilation	Time from intubation to the last successful extubation	From date of intubation until the date of last successful extubation or date of death from any cause, whichever came first, assessed up to 28 days
Secondary	Ventilator-free days to day 28 after randomization	Number of days alive without mechanical ventilation	28 days after randomization
Secondary	Reintubation rate at 7 days after randomization	Number of reintubation within 7 days after randomization	7 days after randomization
Secondary	Self extubation rate at 7 days after extubation	Number of self extubation (accidentally extubation without physician's order) within 7 days after randomization	7 days after randomization
Secondary	Post-extubation respiratory failure	Patients who meet at least one of the following criteria within 72 hours after extubation: respiratory rate more than 35 breaths/minute, oxygen saturation less than 90% or PaO2 less than 80 mmHg despite receiving FiO2 >50%, respiratory acidosis with pH <7.35 or PaCO2 >50 mmHg or increase of 20% from baseline.	From date of randomization until the date of the first event of post-extubation respiratory failure or date of death from any cause or ICU discharge, whichever came first, assessed up to 28 days
Secondary	Tracheostomy	Number of tracheostomy performed	From date of randomization until the date of tracheostomy or date of death from any cause or ICU discharge, whichever came first, assessed up to 28 days
Secondary	Lung injury score on day 3 after randomization	Lung injury score on day 3 after randomization	3 days after randomization
Secondary	Lung injury score on day 7 after randomization	Lung injury score on day 7 after randomization	7 days after randomization
Secondary	PaO2/FiO2 ratio on day 3 after randomization	PaO2/FiO2 ratio on day 3 after randomization	3 days after randomization
Secondary	PaO2/FiO2 ratio on day 7 after randomization	PaO2/FiO2 ratio on day 7 after randomization	7 days after randomization
Secondary	Rates of new diagnosis of ARDS according to the new Berlin criteria after randomization	Number of ARDS diagnoses after randomization	From date of randomization until the date of new onset ARDS diagnosis after randomization or date of death from any cause or ICU discharge, whichever came first, assessed up to 28 days
Secondary	Delirium during ICU admission	Delirium assessed by positive CAM-ICU criteria during ICU admission	From date of randomization until the date of diagnosis of delirium diagnosis or date of death from any cause or ICU discharge, whichever came first, assessed up to 28 days
Secondary	Glasgow Outcome Scale (GOS) at hospital discharge	Functional status assessed by Glasgow Outcome Scale (GOS) at hospital discharge; Unabbreviated title: Glasgow Outcome Scale; Maximum score: 5 = good recovery; 4 = Moderate disability, 3 = Severe disability, 2 = Vegetative state; Minimum score: 1 = death (Higher scores mean better outcome)	From date of randomization until the date of hospital discharge or date of death from any cause , whichever came first, assessed up to 28 days
Secondary	ICU all-cause mortality	All-cause mortality during ICU admission	From date of randomization until the date of ICU discharge or date of death from any cause, whichever came first, assessed up to 28 days
Secondary	Hospital all-cause mortality	All-cause mortality during hospital admission	From date of randomization until the date of hospital discharge or date of death from any cause, whichever came first, assessed up to 28 days
Secondary	28-day mortality after randomization	All-cause mortality during 28-day after randomization	28 days after randomization
Secondary	ICU length of stay	Time from ICU admission to ICU discharge	From date of randomization until the date of ICU discharge or date of death from any cause, whichever came first, assessed up to 28 days
Secondary	Hospital length of stay	Time from hospital admission to hospital discharge	From date of randomization until the date of hospital discharge or date of death from any cause, whichever came first, assessed up to 28 days
Secondary	Maximum infusion dose (per hour) of sedation	Maximum infusion dose (per hour) of sedation used during the study period	From date of sedation initiation until the date of sedation discontinuation or date of death from any cause, whichever came first, assessed up to 28 days
Secondary	Duration (days) of sedation	Duration (days) of sedation used during the study period	From date of sedation initiation until the date of sedation discontinuation or date of death from any cause, whichever came first, assessed up to 28 days
Secondary	Ventilator-associated pneumonia	Number of ventilator-associated pneumonia diagnosed after randomization	From date of randomization until the date of first diagnosed ventilator-associated pneumonia or date of death from any cause, whichever came first, assessed up to 28 days
Secondary	Barotrauma	Number of barotrauma (pneumothorax, pneumomediastinum, subcutaneous emphysema) occurred after randomization	From date of randomization until the date of first documented barotrauma or date of death from any cause, whichever came first, assessed up to 28 days
Secondary	Serious adverse events	Number of serious adverse events (severe allergic reaction or anaphylaxis and propofol infusion syndrome defined as severe lactic acidosis and hypertriglyceridemia) occurred after randomization	From date of randomization until the date of first documented serious adverse events or date of death from any cause, whichever came first, assessed up to 28 days
Secondary	Cardiac arrhythmia	Number of cardiac arrhythmia events occurred after randomization	From date of randomization until the date of first documented cardiac arrhythmia events or date of death from any cause, whichever came first, assessed up to 28 days
Secondary	Maximum infusion dose (per hour) of vasopressor	Maximum infusion dose (per hour) of vasopressor used during the study period	From date of vasopressor initiation until the date of vasopressor discontinuation or date of death from any cause, whichever came first, assessed up to 28 days
Secondary	Duration (days) of vasopressor	Duration (days) of vasopressor used during the study period	From date of vasopressor initiation until the date of vasopressor discontinuation or date of death from any cause, whichever came first, assessed up to 28 days