POISE Trial: Perioperative Ischemic Evaluation Study

NCT ID: NCT00182039

Last Updated: 2008-04-11

Basic Information

• Recruitment Status: TERMINATED
• Clinical Phase: PHASE3
• Total Enrollment: 8351 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2002-10-31
• Study Completion Date: 2007-08-31

Brief Summary

This trial will evaluate the ability of metoprolol (a beta-blocker drug) to prevent heart attacks and deaths around the time of surgery.

Detailed Description

The POISE Trial is a large multi-centre, blinded, randomized controlled group trial of metoprolol vs placebo in 10,000 at risk patients undergoing noncardiac surgery. The POISE Trial will determine the impact of perioperative administration of metoprolol on cardiovascular events (defined as cardiovascular death, nonfatal myocardial infarction, or nonfatal cardiac arrest) during the 30 day post-operative period in at risk patients undergoing noncardiac surgery.

Assuming a control group event rate of 6% for our primary outcome, we determined randomization of 8000 patients would provide 85% power and 10,000 patients 92% power to detect a relative risk reduction of 25% (two-sided alpha = 0.05). We set a goal to randomize 10,000 patients recognizing that we would have adequate power if we randomized 8000 patients. Without knowledge of the trial results and knowing that we had randomized more than 8000 patients and had a higher than predicted event rate, the Operations Committee decided to terminate recruitment on July 31, 2007 primarily because the remaining study drug expired in September 2007.

Conditions

Cardiovascular Diseases

Keywords

randomized controlled trial; blinded; noncardiac surgery; cardiovascular events

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: PREVENTION
• Blinding Strategy: QUADRUPLE

Study Groups

A

metoprolol

Group Type: EXPERIMENTAL

Metoprolol controlled release (CR)

Intervention Type: DRUG

Patients received the first dose of the study drug (i.e., oral metoprolol CR or matching placebo 100 mg) 2-4 hours prior to surgery. Administration of the study drug at each dosing time required a patient to have a heart rate ≥ 50 beats per minute (bpm) and a systolic blood pressure (SBP) ≥ 100 mmHg. If the patient's heart rate was ≥ 80 bpm and their SBP ≥ 100 mmHg at any time during the first 6 hours after surgery, the patient received their first postoperative dose (i.e., 100 mg of the study drug) orally. Patients who did not receive the study drug during the first 6 hours after surgery received 100 mg of the study drug orally at 6 hours after surgery. Twelve hours after the first postoperative dose patients started taking oral metoprolol CR or placebo 200 mg daily for 30 days.

B

placebo

Group Type: PLACEBO_COMPARATOR

Placebo

Intervention Type: DRUG

Patients received the first dose of the study drug (i.e., oral metoprolol CR or matching placebo 100 mg) 2-4 hours prior to surgery. Administration of the study drug at each dosing time required a patient to have a heart rate ≥ 50 beats per minute (bpm) and a systolic blood pressure (SBP) ≥ 100 mmHg. If the patient's heart rate was ≥ 80 bpm and their SBP ≥ 100 mmHg at any time during the first 6 hours after surgery, the patient received their first postoperative dose (i.e., 100 mg of the study drug) orally. Patients who did not receive the study drug during the first 6 hours after surgery received 100 mg of the study drug orally at 6 hours after surgery. Twelve hours after the first postoperative dose patients started taking oral metoprolol CR or placebo 200 mg daily for 30 days.

Interventions

Metoprolol controlled release (CR)

Patients received the first dose of the study drug (i.e., oral metoprolol CR or matching placebo 100 mg) 2-4 hours prior to surgery. Administration of the study drug at each dosing time required a patient to have a heart rate ≥ 50 beats per minute (bpm) and a systolic blood pressure (SBP) ≥ 100 mmHg. If the patient's heart rate was ≥ 80 bpm and their SBP ≥ 100 mmHg at any time during the first 6 hours after surgery, the patient received their first postoperative dose (i.e., 100 mg of the study drug) orally. Patients who did not receive the study drug during the first 6 hours after surgery received 100 mg of the study drug orally at 6 hours after surgery. Twelve hours after the first postoperative dose patients started taking oral metoprolol CR or placebo 200 mg daily for 30 days.

Intervention Type: DRUG

Placebo

Patients received the first dose of the study drug (i.e., oral metoprolol CR or matching placebo 100 mg) 2-4 hours prior to surgery. Administration of the study drug at each dosing time required a patient to have a heart rate ≥ 50 beats per minute (bpm) and a systolic blood pressure (SBP) ≥ 100 mmHg. If the patient's heart rate was ≥ 80 bpm and their SBP ≥ 100 mmHg at any time during the first 6 hours after surgery, the patient received their first postoperative dose (i.e., 100 mg of the study drug) orally. Patients who did not receive the study drug during the first 6 hours after surgery received 100 mg of the study drug orally at 6 hours after surgery. Twelve hours after the first postoperative dose patients started taking oral metoprolol CR or placebo 200 mg daily for 30 days.

Intervention Type: DRUG

Eligibility Criteria

Inclusion Criteria

• Patients undergoing noncardiac surgery
• ≥ 45 years of age; either sex.
• Have an expected length of stay ≥ 24 hours
• Fulfill any one of the following 6 criteria:

• coronary artery disease;
• peripheral vascular disease;
• history of stroke due to atherothrombotic disease;
• hospitalization for congestive heart failure within 3 years of randomization;
• undergoing major vascular surgery; OR
• any 3 of the following 7 criteria: scheduled for high risk surgery (i.e. intraperitoneal or intrathoracic); emergency/urgent surgery; any history of congestive heart failure; history of a transient ischemic attack (TIA); diabetes and currently on an oral hypoglycemic agent or insulin therapy; preoperative serum creatinine > 175 µmol/L (> 2.0 mg/dl); or age > 70 years.

Exclusion Criteria

• Contraindication to metoprolol including any of the following: significant bradycardia (heart rate < 50 beats per minute); second or third degree heart block without a pacemaker; asthma that has been active within the last decade; and history of chronic obstructive pulmonary disease (COPD) with bronchospasm on pulmonary function tests.
• Clinical plan to use a beta-blocker preoperatively or during the first 30 postoperative days
• Prior adverse reaction to a beta-blocker
• Coronary artery bypass graft (CABG) surgery with complete revascularization in the preceding 5 years and no evidence of cardiac ischemia since the CABG surgery
• Patients undergoing low risk surgical procedures (potential examples include transurethral procedures [transurethral prostatectomies (TURPs), stone baskets, etc.], ophthalmologic procedures under topical or regional anesthesia [cornea transplants, cataract surgery, etc.], and surgeries with limited physiological stresses [digital re-implantation, nerve repairs, etc.] )
• Concurrent use of verapamil
• Prior enrollment in this trial

• Minimum Eligible Age: 45 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Canadian Institutes of Health Research (CIHR)

OTHER_GOV

Sponsor Role: collaborator

National Health and Medical Research Council, Australia

OTHER

Sponsor Role: collaborator

British Heart Foundation

OTHER

Sponsor Role: collaborator

AstraZeneca

INDUSTRY

Sponsor Role: collaborator

Hamilton Health Sciences Corporation

OTHER

Sponsor Role: lead

Responsible Party

McMaster University

Principal Investigators

P.J. Devereaux, MD

Role: PRINCIPAL_INVESTIGATOR

McMaster University

Homer Yang, MD

Role: PRINCIPAL_INVESTIGATOR

University of Ottawa

Locations

McMaster University

Hamilton, Ontario, Canada

Countries

Canada

References

POISE Trial Investigators; Devereaux PJ, Yang H, Guyatt GH, Leslie K, Villar JC, Monteri VM, Choi P, Giles JW, Yusuf S. Rationale, design, and organization of the PeriOperative ISchemic Evaluation (POISE) trial: a randomized controlled trial of metoprolol versus placebo in patients undergoing noncardiac surgery. Am Heart J. 2006 Aug;152(2):223-30. doi: 10.1016/j.ahj.2006.05.019.

Reference Type: BACKGROUND

PMID: 16875901 (View on PubMed)

Devereaux PJ, Xavier D, Pogue J, Guyatt G, Sigamani A, Garutti I, Leslie K, Rao-Melacini P, Chrolavicius S, Yang H, Macdonald C, Avezum A, Lanthier L, Hu W, Yusuf S; POISE (PeriOperative ISchemic Evaluation) Investigators. Characteristics and short-term prognosis of perioperative myocardial infarction in patients undergoing noncardiac surgery: a cohort study. Ann Intern Med. 2011 Apr 19;154(8):523-8. doi: 10.7326/0003-4819-154-8-201104190-00003.

Reference Type: DERIVED

PMID: 21502650 (View on PubMed)

POISE Study Group; Devereaux PJ, Yang H, Yusuf S, Guyatt G, Leslie K, Villar JC, Xavier D, Chrolavicius S, Greenspan L, Pogue J, Pais P, Liu L, Xu S, Malaga G, Avezum A, Chan M, Montori VM, Jacka M, Choi P. Effects of extended-release metoprolol succinate in patients undergoing non-cardiac surgery (POISE trial): a randomised controlled trial. Lancet. 2008 May 31;371(9627):1839-47. doi: 10.1016/S0140-6736(08)60601-7. Epub 2008 May 12.

Reference Type: DERIVED

PMID: 18479744 (View on PubMed)

Other Identifiers

ISRCTN17233551

Identifier Type: -

Identifier Source: secondary_id

MCT-50851-CT

Identifier Type: -

Identifier Source: org_study_id