The Protective Effects Of Treatment With Hyperbaric Oxygen Prior To Bypass Heart Surgery

This study has been completed.
North of England Medical & Hyperbaric Services
Information provided by:
Hull and East Yorkshire Hospitals NHS Trust Identifier:
First received: February 14, 2008
Last updated: February 22, 2008
Last verified: January 2008
The purpose of this study was to determine if treating patients who have coronary heart disease with hyperbaric oxygen (HBO) prior to coronary artery bypass graft (CABG) surgery reduces injury to the heart and vascular system during and after surgery. Furthermore, this study also aims to identify some of the post CABG clinical effects of HBO treatment prior to CABG.

Condition Intervention Phase
Myocardial Reperfusion Injury
Drug: Hyperbaric Oxygen
Phase 1
Phase 2

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Parallel Assignment
Masking: Single Blind (Caregiver)
Primary Purpose: Health Services Research
Official Title: The Effects of Hyperbaric Oxygen Preconditioning On Cardiovascular Protection & Ischemic Reperfusion Injury

Resource links provided by NLM:

Further study details as provided by Hull and East Yorkshire Hospitals NHS Trust:

Primary Outcome Measures:
  • Myocardial Hsp72 protein [ Time Frame: Intra-operative (During CABG) ] [ Designated as safety issue: No ]
  • Myocardial eNOS protein [ Time Frame: Intra-Operative (During CABG) ] [ Designated as safety issue: No ]
  • Serum Troponin-T [ Time Frame: Peri-operative ] [ Designated as safety issue: No ]
  • Serum soluble ICAM-1 [ Time Frame: Peri-operative ] [ Designated as safety issue: No ]
  • Serum soluble PSGL-1 [ Time Frame: Peri-operative ] [ Designated as safety issue: No ]
  • Serum soluble P-Selectin [ Time Frame: Peri-operative ] [ Designated as safety issue: No ]
  • Serum soluble E-Selectin [ Time Frame: Peri-operative ] [ Designated as safety issue: No ]

Secondary Outcome Measures:
  • All cardiovascular haemodynamic parameters as measured by a pulmonary artery catheter [ Time Frame: Peri-operative ] [ Designated as safety issue: No ]
  • Duration of mechanical ventilation [ Time Frame: Post Operative ] [ Designated as safety issue: No ]
  • Duration of endotracheal intubation [ Time Frame: post operative ] [ Designated as safety issue: No ]
  • Length of stay in ICU [ Time Frame: Post-operative ] [ Designated as safety issue: No ]
  • Blood loss [ Time Frame: Post operative ] [ Designated as safety issue: No ]
  • Inotrope usage [ Time Frame: Post operative ] [ Designated as safety issue: No ]
  • Atrial Fibrillation [ Time Frame: Post operative ] [ Designated as safety issue: No ]
  • Low cardiac output status [ Time Frame: Post operative ] [ Designated as safety issue: No ]
  • Pulmonary complications [ Time Frame: Post operative ] [ Designated as safety issue: No ]
  • Renal Complications [ Time Frame: Post operative ] [ Designated as safety issue: No ]
  • Cerebrovascular complications [ Time Frame: Post operative ] [ Designated as safety issue: No ]
  • Gastrointestinal complications [ Time Frame: Post operative ] [ Designated as safety issue: No ]
  • Wound complications [ Time Frame: Post operative ] [ Designated as safety issue: No ]
  • Cost of ICU stay [ Time Frame: Post operative ] [ Designated as safety issue: No ]

Enrollment: 81
Study Start Date: January 2005
Study Completion Date: January 2008
Primary Completion Date: January 2007 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
No Intervention: A
Patients in this arm were not treated with HBO prior to CABG
Experimental: B
Patients in this arm were treated with HBO prior to CABG
Drug: Hyperbaric Oxygen
100% Oxygen at 2.4 ATA for 30 minutes followed by 5 minutes break followed by 100% Oxygen at 2.4 ATA for another 30 minutes. This intervention was given about 4 to 5 hours prior to CABG
Other Name: Hyperbaric Oxygen Preconditioning


Ages Eligible for Study:   20 Years to 85 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Patients undergoing elective first time CABG
  • Patients with at least 1 vessel coronary artery disease undergoing on- pump CABG

Exclusion Criteria:

  • Age ≤ 20 years or ≥ 85 years
  • Ejection fraction < 30%
  • Unstable angina
  • Recent myocardial infarction (< 1 month)
  • Any additional cardiac disease (e.g. arrythmia, aneurysm, valvular/septal disease, dissection or elevated pulmonary artery pressure)
  • Any end stage organ failure (e.g. renal and respiratory failure)
  • History of chronic obstructive pulmonary disease (COPD)
  • Pneumothorax
  • Pulmonary bullae
  • Convulsions
  • Current history of malignancy
  • Severe myopia or intraocular lens
  • Patients on K+(ATP) Channel Openers e.g. Nicorandil, Oral Hypoglycemics, Opioid Analgesics, Catecholamines.
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Please refer to this study by its identifier: NCT00623142

United Kingdom
Hull & East Yorkshire NHS Trust (Castle Hill Hospital)
Hull, East Riding of Yorkshire, United Kingdom, HU16 5JQ
Sponsors and Collaborators
Hull and East Yorkshire Hospitals NHS Trust
North of England Medical & Hyperbaric Services
Principal Investigator: Jeysen Z Yogaratnam, MB.BCh, BAO, MRCS Hull & East Yorkshire NHS Trust (Castle Hill Hospital), United Kingdom
  More Information

Publications automatically indexed to this study by Identifier (NCT Number):
Responsible Party: Dr. Jeysen Zivan Yogaratnam, Hull & East Yorkshire NHS Trust Identifier: NCT00623142     History of Changes
Other Study ID Numbers: R0047  04/Q1104/26 
Study First Received: February 14, 2008
Last Updated: February 22, 2008
Health Authority: United Kingdom: Medicines and Healthcare Products Regulatory Agency

Keywords provided by Hull and East Yorkshire Hospitals NHS Trust:
Myocardial protection
Ischemic Reperfusion Injury
Hyperbaric Oxygen

Additional relevant MeSH terms:
Myocardial Reperfusion Injury
Reperfusion Injury
Cardiovascular Diseases
Heart Diseases
Myocardial Ischemia
Pathologic Processes
Postoperative Complications
Vascular Diseases processed this record on May 04, 2016