Hyperbaric Oxygen, Oxidative Stress, NO Bioavailability and Tissue Oxygenation
Hyperbaric oxygen therapy (HBOT) increases tissue oxygenation and serves as an adjunct therapy for diabetic wounds. However, some patients have insufficient increase or even paradoxical decrease in tissue O2 due to vasoconstriction. The aim of the present study was to investigate the pathophysiology responsible for the different consequences of HBOT and to evaluate the effect of N-acetylcysteine (NAC) on these changes.
Methods: Prospective, randomized, cross-over trial including fifty diabetic patients with non-healing ulcers. All patients had two HBOT (100%oxygen, 2ATA) with NAC at the first or the second evaluation. At the beginning and at the end of each evaluation, ulcer oxygenation and plasma levels of malondialdehyde (MDA), total anti-oxidant status (TAOS) and nitric oxide (NO) were measured. Patients with ulcer oxygenation above 200mmHg, were subjected to complete HBOT protocol.
|Study Design:||Allocation: Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Crossover Assignment
Masking: Open Label
Primary Purpose: Treatment
|Official Title:||The Relation Between Hyperbaric Oxygen, Oxidative Stress, NO Bioavailability and Tissue Oxygenation in Diabetic Patients Suffering From Foot Ulcers|
- The aim of the present study was to investigate whether changes in oxidative stress and NO bioavailability are responsible for the different effects of HBOT on tissue oxygenation in diabetic patients suffering from foot ulcers.
|Study Start Date:||December 2003|
|Study Completion Date:||September 2005|
|The Institute of Hyperbaric Medicine and Wound Care Clinic|
|Zerifin, Israel, 70300|
|Principal Investigator:||Shai Efrati, MD||Assaf-Harofeh Medical Center|