The Cardioprotective Effects of Adding Ozone To Cardioplegic Solution in Adult Cardiac Surgery
试验速览
- 阶段
- 2 期
- 入组人数
- 40
- 主要终点
- type of cardiac rhythm
研究概览
简要总结
forty patients with age ranged between 40-70 years undergoing elective coronary artery bypass graft surgery with cardiopulmonary bypass will be included, they will divided into two groups.
Ozone Group: in which Ozone will be added to cold blood cardioplegia. Control Group: in which in which only cold blood cardioplegia
Primary outcome:
Pattern of recovery of myocardium after declamping of Aorta
- Time of cardiac rhythm return after declamping.
- type of cardiac rhythm after declamping and rate of DC use.
Secondary outcome:
A-cardiac parameters
- Post operative inotropic score
- Incidence of post operative cardiac dysrhythmias
- postoperative ejection fraction (EF)
- Postoperative parameters of myocardial ischaemia
- a- Troponin levels
- b-Pro BNP
- • Histopathology of myocardial sample for detection of myocyte cellular edema as a marker of ischemic changes.
B-non cardiac parameters:
- inflammatory markers 1. CRP 2. L\N 3. P\N
- ICU stay
- hospital stay
- morbidity and mortality
详细描述
Ozone Administration Protocol
Our procedures for O3T application in CBP surgery conform to international guidelines of the ''Madrid Declaration on Ozone Therapy'' 32 . M-O3T will be carried out as follows:
50mL of blood drawn by vacuum from the patient central catheter into a sterile blood transfusion bag in which 10 mL of 3.8% Na citrate solution (Galenica Senese Industries, Siena, Italy) as an anticoagulant will be previously added so that the blood/citrate volume ratio was 9:1. After blood withdrawal, the bag will momentarily disconnected leaving the venous access open by a saline infusion 33 . A corresponding volume (50 mL) of gas was immediately added with an O3 concentration of 20-50 micrograms/mL gas. Ozone was produced by Medozon compact generator (Herrmann Apparatebau GmbH, Germany).
The gas is immediately and continuously mixed with the blood in the bag for at least 5 min and with gentle rotating movement to avoid foaming. Due to the blood viscosity, the gas mixture does not instantaneously come into contact with the whole blood mass, thus this mixing time is necessary. During these 5 min of mixing, the ozone totally reacted with both the potent antioxidants of plasma and the unsaturated lipids bound to albumin, generating asmall amount of hydrogen peroxide and alkenals. These two messengers were responsible for eliciting crucial biochemical reactions on both erythrocytes and within cells. At this point, the hyper-oxygenated ozonated blood will be mixed with the cold cardioplegia (Thomsons cardioplegia) this amount of ozonated blood will be added to each 500 ml of cardioplegic solution
Exclusion Criteria:
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Supportive Care
- 盲法
- Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
入排标准
- 年龄范围
- 40 Years 至 70 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •patients undergoing elective CABG surgery
排除标准
- •• left ventricular ejection fraction< 40%
- •diabetic or other metabolic disorders,
- •use of left ventricular assist devices,
- •Renal failure or on hemodialysis
- •Hepatic dysfunction
- •Hypothyroidism
- •implanted pacemaker
研究组 & 干预措施
Ozone Group
in which Ozone will be added to cold blood cardioplegia
干预措施: Ozone (Drug)
Control Group
: in which in which only cold blood cardioplegia
干预措施: Cardioplegic Solutions (Drug)
结局指标
主要结局
type of cardiac rhythm
时间窗: one hour
type of cardiac rhythm after declamping and rate of DC use
Time of cardiac rhythm
时间窗: one hour
Time of cardiac rhythm return after declamping.
次要结局
- Post operative inotropic score(two weeks)
- post operativecardiac dysrhythmias(two weeks)
- postoperative ejection fraction (EF)(one month)
- Postoperative parameters of myocardial ischaemia(two weeks)
- ICU stay(two weeks)
- mortality(two weeks)
研究者
Israa mohamed lotfallah
assistant lecture assiut university hospital principle investigator
Assiut University