Clinical trial NCT01295567: Can Dipyridamole Induce Protection Against Ischemia and Reperfusion Injury in Patients Undergoing Elective Coronary Artery Bypass Grafting (CABG)?
Official title: Can Dipyridamole Induce Protection Against Ischemia and Reperfusion Injury in Patients Undergoing Elective CABG?
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: PHASE4
Conditions: Cardiovascular Disease
Ischemic Heart Disease
Keywords: ischemia reperfusion injury
CABG
dipyridamole
HS-troponin-I
Lead sponsor: Radboud University Medical Center
Sponsor class: OTHER
First posted: 2011-02-14
Enrollment: 95
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: PREVENTION

Brief summary: Rationale:

Due to western lifestyle human coronary arteries are prone to develop atherosclerotic plaques. Hence the heart is an important target organ for atherothrombotic complications: myocardial ischemia, arrhythmias, myocardial infarction and heart failure. To alleviate symptoms and decrease mortality in these patients, myocardial revascularisation is recommended. Coronary artery bypass grafting (CABG) is indicated in patients with severe atherosclerotic disease of all three coronary arteries or the left main stem coronary artery. Cardiac ischemia and reperfusion injury during CABG is inevitable and jointly accountable for complications that occur after CABG (e.g. death, myocardial infarction, arrhythmias, stroke, or renal complications). Dipyridamole has been shown to reduce ischemia reperfusion injury in healthy volunteers using an intermediate endpoint and may prevent cardiovascular death or event in secondary prevention after cerebrovascular disease. The investigators hypothesise that oral pre-treatment with dipyridamole can increase cardiac tissue tolerance against ischemia and reperfusion injury due to CABG. The investigators expect lower troponin-I release in patients who were pretreated with dipyridamole.

Objective: To study the effect of oral pretreatment with dipyridamole on high sensitivity (HS)-troponin-I release after CABG. Secondary objectives are whether oral pretreatment with dipyridamole reduces postoperative CABG arrhythmias, prolonged inotropic support, and duration of Intensive Care-stay. Further secondary endpoints are the effects of dipyridamole pretreatment on renal injury and post-ischemic recovery of contractile function (measured ex-vivo).

Hypothesis:

The investigators hypothesize that oral pre-treatment with dipyridamole can increase cardiac tissue tolerance against ischemia and reperfusion injury. The investigators expect lower HS-troponin-I release in patients who were pretreated with dipyridamole. Additionally the investigators expect the incidence of arrhythmias, need for prolonged inotropic support (longer than 24 hours postoperative) to be decreased in pretreated patients.


Eligibility criteria: Inclusion Criteria:

* Acceptation for CABG in RUNMC
* Informed consent

Exclusion Criteria:

* Recent myocardial infarction (STEMI or non-STEMI), during two weeks prior to inclusion
* Asthma
* Use of insulin
* Use of sulfonylurea derivates (e.g. glibenclamide, tolbutamide, gliclazide, glimepiride)
* Use of metformin
* Use of oral corticosteroids
* Use of dipyridamole
* Use of clopidogrel within 8 days prior to scheduled CABG surgery
* Chronic use of Non Steroid Anti-Inflammatory Drugs (NSAIDs)
* Off-pump surgery

Primary outcomes:
measure: HS-troponin-I
timeFrame: within 72 hours after CABG.
Secondary outcomes:
measure: duration of inotropic support
timeFrame: within three days after CABG
measure: duration of IC stay
timeFrame: within three days after CABG
measure: drain production
timeFrame: 24 hours after surgery and total drain production within three days after surgery
measure: post-ischemic recovery of contractile function
timeFrame: until 4 hours after harvesting
measure: Renal damage
timeFrame: Within three days after CABG
Other outcomes:
Locations:
city: Nijmegen
country: Netherlands
facility: RUNMC
Study officials:
References:
citation: El Messaoudi S, Wouters CW, van Swieten HA, Pickkers P, Noyez L, Kievit PC, Abbink EJ, Rasing-Hoogveld A, Bouw TP, Peters JG, Coenen MJ, Donders AR, Riksen NP, Rongen GA. Effect of dipyridamole on myocardial reperfusion injury: A double-blind randomized controlled trial in patients undergoing elective coronary artery bypass surgery. Clin Pharmacol Ther. 2016 Apr;99(4):381-9. doi: 10.1002/cpt.106. Epub 2015 Oct 22.