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| Name | Class |
|---|---|
| University of Kent | OTHER |
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Basic animal research has demonstrated that exercise training can protect the myocardium from ischemia-reperfusion injury through several biological mechanisms . This effect of exercise training may be beneficial in the perioperative period when cardiac complications may arise. However, exercise induced cardioprotection is lost completely within 18 days of stopping the training program. This finding from animal research will be used to test the hypothesis that 3 days of consecutive exercise with the last bout conducted within the last 24/48 hours prior to surgery, will have a cardioprotective effect . Specifically, exercise has been shown to protect cardiac myocytes against reperfusion induced oxidative stress and mitochondria against reperfusion induced damage. This exercise mediated cardioprotection is observed in short moderate duration ischemia (i.e. 5-20 min) and moderate to severe (i.e.20-60 min) ischemic insults. The effects of exercise induced cardioprotection have only been investigated at cell level and it has not been shown whether this will translate into a reduction in postsurgical reperfusion injury and associated complications. To study this potential cardioprotective effect the investigators will aim to recruit patients who have a high risk of receiving reperfusion injury during surgery. Specifically, the investigators will recruit abdominal aortic aneurysm patients where the risk of heart complications is high. There is also currently no evidence in the published literature with regard to the effect of preoperative supervised exercise.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Usual-care only | No Intervention | Patients will receive usual-care only during the preoperative period. | |
| Preoperative exercise | Experimental | Patients will perform 3 consecutive days of 60 min submaximal cycling exercise at a moderate exercise intensity. During the 60 min of exercise, patients will be provided with three equally spaced 3min rest periods. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Preoperative exercise | Other | Patients will perform 3 consecutive days of 60 min submaximal cycling exercise at a moderate exercise intensity. During the 60 min of exercise, patients will be provided with three equally spaced 3min rest periods |
| Measure | Description | Time Frame |
|---|---|---|
| Length of in-hospital stay | Through study completion, on average up to 60 days post-surgery |
| Measure | Description | Time Frame |
|---|---|---|
| Postoperative mortality | 60 day mortality | |
| Postoperative in-hospital complications | On average up to 5 days post-surgery |
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Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Katharine Richardson | Medway Maritime NHS | Principal Investigator |
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| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 18191755 | Background | Powers SK, Quindry JC, Kavazis AN. Exercise-induced cardioprotection against myocardial ischemia-reperfusion injury. Free Radic Biol Med. 2008 Jan 15;44(2):193-201. doi: 10.1016/j.freeradbiomed.2007.02.006. Epub 2007 Feb 21. | |
| 6340579 | Background | Goldman L. Cardiac risks and complications of noncardiac surgery. Ann Intern Med. 1983 Apr;98(4):504-13. doi: 10.7326/0003-4819-98-4-504. |
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| ID | Term |
|---|---|
| D017544 | Aortic Aneurysm, Abdominal |
| ID | Term |
|---|---|
| D001014 | Aortic Aneurysm |
| D000783 | Aneurysm |
| D014652 | Vascular Diseases |
| D002318 | Cardiovascular Diseases |
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| ID | Term |
|---|---|
| D000082622 | Preoperative Exercise |
| ID | Term |
|---|---|
| D019990 | Perioperative Care |
| D005791 | Patient Care |
| D013812 | Therapeutics |
| D013514 | Surgical Procedures, Operative |
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| 15450112 | Background | Lennon SL, Quindry JC, French JP, Kim S, Mehta JL, Powers SK. Exercise and myocardial tolerance to ischaemia-reperfusion. Acta Physiol Scand. 2004 Oct;182(2):161-9. doi: 10.1111/j.1365-201X.2004.01346.x. |
| 11641363 | Background | Demirel HA, Powers SK, Zergeroglu MA, Shanely RA, Hamilton K, Coombes J, Naito H. Short-term exercise improves myocardial tolerance to in vivo ischemia-reperfusion in the rat. J Appl Physiol (1985). 2001 Nov;91(5):2205-12. doi: 10.1152/jappl.2001.91.5.2205. |
| 16860886 | Background | Ascensao A, Ferreira R, Magalhaes J. Exercise-induced cardioprotection--biochemical, morphological and functional evidence in whole tissue and isolated mitochondria. Int J Cardiol. 2007 Apr 12;117(1):16-30. doi: 10.1016/j.ijcard.2006.04.076. Epub 2006 Jul 24. |
| 14672968 | Background | Lennon SL, Quindry J, Hamilton KL, French J, Staib J, Mehta JL, Powers SK. Loss of exercise-induced cardioprotection after cessation of exercise. J Appl Physiol (1985). 2004 Apr;96(4):1299-305. doi: 10.1152/japplphysiol.00920.2003. Epub 2003 Dec 12. |
| D001018 |
| Aortic Diseases |
| D015444 |
| Exercise |
| D009043 | Motor Activity |
| D009068 | Movement |
| D009142 | Musculoskeletal Physiological Phenomena |
| D055687 | Musculoskeletal and Neural Physiological Phenomena |
| D006296 | Health Services |
| D005159 | Health Care Facilities Workforce and Services |