Metabolic Support With Perhexiline to Protect Myocardium Undergoing Coronary Artery Surgery

Summary

Open-heart surgery causes injury of the heart muscle. Although this is usually mild, temporary and reversible, if it is severe it can endanger life and require additional high cost care. During surgery, techniques are used to protect the heart from injury, but these remain imperfect. This study assesses the effect of facilitating sugar metabolism (a more efficient fuel) by the heart muscle using the drug Perhexiline given before the operation. This treatment has a sound experimental basis for improving outcome. If this improvement is confirmed surgical results could be improved. The investigators will be studying heart function, heart muscle energy stores and chemicals which quantify the amount of heart muscle injury. The investigators' hypothesis is that Perhexiline will improve the protection of the heart by decreasing damage that may occur during heart surgery.

Timeline

Start

2007-02

Primary completion

2010-04

Completion

2010-04

Outcome

Missed primary endpoint

paper The incidence rate of a low cardiac output episode in the perhexiline arm was 36.7% (51/139) vs 34.7% (51/147) in the control arm [odds ratio (OR) 0.92, 95% confidence interval (CI) 0.56-1.50, P = 0.74]. PMID 24948413 ↗

paper Preoperative perhexiline does not improve myocardial protection in patients undergoing coronary surgery PMID 24948413 ↗

Publications

• Background Quinn DW, Pagano D, Bonser RS, Rooney SJ, Graham TR, Wilson IC, Keogh BE, Townend JN, Lewis ME, Nightingale P; Study Investigators. Improved myocardial protection during coronary artery surgery with glucose-insulin-potassium: a randomized controlled trial. J Thorac Cardiovasc Surg. 2006 Jan;131(1):34-42. doi: 10.1016/j.jtcvs.2005.05.057.
• Background Ranasinghe AM, Quinn DW, Pagano D, Edwards N, Faroqui M, Graham TR, Keogh BE, Mascaro J, Riddington DW, Rooney SJ, Townend JN, Wilson IC, Bonser RS. Glucose-insulin-potassium and tri-iodothyronine individually improve hemodynamic performance and are associated with reduced troponin I release after on-pump coronary artery bypass grafting. Circulation. 2006 Jul 4;114(1 Suppl):I245-50. doi: 10.1161/CIRCULATIONAHA.105.000786.
• Background Ashrafian H, Horowitz JD, Frenneaux MP. Perhexiline. Cardiovasc Drug Rev. 2007 Spring;25(1):76-97. doi: 10.1111/j.1527-3466.2007.00006.x.
• Drury NE, Howell NJ, Calvert MJ, Weber RJ, Senanayake EL, Lewis ME, Hyde JA, Green DH, Mascaro JG, Wilson IC, Graham TR, Rooney SJ, Viant MR, Freemantle N, Frenneaux MP, Pagano D; investigators. The effect of perhexiline on myocardial protection during coronary artery surgery: a two-centre, randomized, double-blind, placebo-controlled trial. Eur J Cardiothorac Surg. 2015 Mar;47(3):464-72. doi: 10.1093/ejcts/ezu238. Epub 2014 Jun 19.

Drugs

Evaluation	Drug	Modality	Dose	Route
Subject	Perhexiline	Small molecule	100 mg	Oral

Indications