Effects of Sedation on Clinical, Gasometric and Respiratory Muscle Parameters in Critically Ill COPD Patients

NCT ID: NCT03678532

Last Updated: 2018-09-19

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 97 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2016-07-01
• Study Completion Date: 2017-12-01

Brief Summary

the investigators conducted a randomized controlled trial in respiratory intensive care unit (RICU) of Assiut University Hospital. COPD patients admitted to RICU were included. Exclusion criteria include: Marked renal impairment, Liver cell failure, neurological disorders, age <18 or >70 and pregnancy.

Patients were randomly allocated to two groups. Midazolam was used for sedation in both groups. Richmond agitation-sedation score (RASS) was used to monitor level of sedation or agitation. Control group received daily interruption of sedation. intervention group managed by no-sedation strategy.

Primary outcome measure: changes in PaCO2 Secondary outcome measures include: changes in PH, heart rate, mean arterial blood pressure, respiratory rate, P0.1 and NIF.

Detailed Description

The researchers conducted a randomized controlled trial in respiratory intensive care unit (RICU) of Assiut University Hospital. COPD patients admitted to RICU were included. Exclusion Criteria include: Marked renal impairment (creatinine > 2mg/dl), Liver cell failure (Bilirubin> 3mg/dl), neurological disorders, age <18 or >70 and pregnancy.

Patients were randomly allocated to two groups. Midazolam was used for sedation in both groups. Richmond agitation-sedation score (RASS) was used to monitor level of sedation or agitation. Control group received daily interruption of sedation. After intubation, patients received IV infusion of midazolam, gradually increasing dose till RASS reached -4 or -5. Infusion stopped at 7:00 AM. If the patient is awake no need for resuming infusion. If signs of discomfort occurred, infusion resumed at half of the prior dose, targeting conscious sedation (RASS 0: -3) Intervention group were managed by no-sedation strategy. Patients received bolus doses of midazolam only when needed, after atrial to control agitation by correcting the underlying cause. If the patient needed more than 3 bolus doses , IV infusion of midazolam was given by the daily interruption protocol as in the control group. No crossover was allowed between groups. Analysis was done by intension-to-treat principle.

Follow up arterial blood gas sampling was done baseline at intubation. 1hr., 2hrs., 12hrs., 24hrs. and 48hrs. after intubation. Recording of clinical monitoring parameters (hear rate, mean arterial blood pressure, respiratory rate) was done at the same intervals. Airway occlusion pressure (P0.1) and negative inspiratory force (NIF) were measured 48 hours after intubation to test affection of respiratory muscles in both groups.

Primary outcome measure: changes in PaCO2 Secondary outcome measures include: changes in PH, heart rate, mean arterial blood pressure, respiratory rate, P0.1 and NIF.

Conditions

Sedation in Critically Ill COPD Patients

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: TREATMENT
• Blinding Strategy: NONE

Study Groups

Daily interruption of sedation (control group)

Control group received daily interruption of sedation. After intubation, patients received IV infusion of midazolam. 1-2 mg / hour with increments 1-2 mg/hr gradually increasing dose till RASS reached -4 or -5. Infusion stopped at 7:00 AM. If the patient is awake no need for resuming infusion. If signs of discomfort occurred, infusion resumed at half of the prior dose, targeting conscious sedation (RASS 0: -3)

Group Type: EXPERIMENTAL

Midazolam

Intervention Type: DRUG

No sedation

Intervention group were managed by no-sedation strategy. Patients received bolus doses of midazolam (1-5 mg) only when needed, after atrial to control agitation by correcting the underlying cause. If the patient needed more than 3 bolus doses , IV infusion of midazolam was given by the daily interruption protocol as in the control group. No crossover was allowed between groups. Analysis was done by intension-to-treat principle.

Group Type: EXPERIMENTAL

Midazolam

Intervention Type: DRUG

Interventions

Midazolam

Intervention Type: DRUG

Eligibility Criteria

Inclusion Criteria

Critically ill patients diagnosed as COPD, admitted to the respiratory intensive care unit (RICU) of Assiut University Hospital.

Exclusion Criteria

Marked renal impairment (creatinine > 2mg/dl), Liver cell failure (Bilirubin> 3mg/dl), neurological disorders, age <18 or >70 and pregnancy.

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 70 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Assiut University

OTHER

Sponsor Role: lead

Responsible Party

Emad Zarief , MD

Associate Professor of Anesthesia

Responsibility Role: PRINCIPAL_INVESTIGATOR

References

Laerkner E, Stroem T, Toft P. No-sedation during mechanical ventilation: impact on patient's consciousness, nursing workload and costs. Nurs Crit Care. 2016 Jan;21(1):28-35. doi: 10.1111/nicc.12161. Epub 2015 Apr 17.

Reference Type: BACKGROUND

PMID: 25892407 (View on PubMed)

Toft P, Olsen HT, Jorgensen HK, Strom T, Nibro HL, Oxlund J, Wian KA, Ytrebo LM, Kroken BA, Chew M. Non-sedation versus sedation with a daily wake-up trial in critically ill patients receiving mechanical ventilation (NONSEDA Trial): study protocol for a randomised controlled trial. Trials. 2014 Dec 20;15:499. doi: 10.1186/1745-6215-15-499.

Reference Type: BACKGROUND

PMID: 25528350 (View on PubMed)

Strom T, Toft P. Sedation and analgesia in mechanical ventilation. Semin Respir Crit Care Med. 2014 Aug;35(4):441-50. doi: 10.1055/s-0034-1382156. Epub 2014 Aug 11.

Reference Type: BACKGROUND

PMID: 25111642 (View on PubMed)

Kress JP, Vinayak AG, Levitt J, Schweickert WD, Gehlbach BK, Zimmerman F, Pohlman AS, Hall JB. Daily sedative interruption in mechanically ventilated patients at risk for coronary artery disease. Crit Care Med. 2007 Feb;35(2):365-71. doi: 10.1097/01.CCM.0000254334.46406.B3.

Reference Type: BACKGROUND

PMID: 17205005 (View on PubMed)

Other Identifiers

sedation in COPD

Identifier Type: -

Identifier Source: org_study_id