(Feasibility) Open Label Randomised Controlled Trial of Hyperoxic O2 Therapy vs. Normoxic O2 Therapy in Sepsis
试验速览
- 阶段
- 4 期
- 状态
- 已完成
- 发起方
- 入组人数
- 50
- 试验地点
- 1
- 主要终点
- Does delivery of high flow oxygen (hyperoxic oxygen therapy) compared to titrated oxygen therapy (normoxic oxygen therapy) reduce mortality at 90 days
研究概览
简要总结
The motivation for this study comes from a desire to improve the mortality of patients with sepsis. Oxygen is cheap, readily available and is included in current United Kingdom Emergency Department guidelines, but it may also be harmful to patients with sepsis - it is important to know if this is the case.
This study is a pilot study to also assess the feasibility of delivering a larger adequately powered study.
详细描述
Currently there is no consensus on the use of oxygen therapy in sepsis resuscitation. Uncertainty exists as to whether increasing oxygen above physiological levels (hyperoxia) or maintaining physiological oxygen concentration (normoxia) confers the most benefit to patients. By indicating whether hyperoxia is beneficial or not, the study hopes to further increase the effectiveness of sepsis resuscitation.
In patients with sepsis there are convincing, coherent pathophysiological and evidence-based justifications which support both normoxia and hyperoxia.
Why normoxia may benefit patients with sepsis: Enhanced oxidative and nitrosative stress resulting from increased formation of reactive oxygen species (ROS) and reactive nitrogen species (RNS) occurs during sepsis and is assumed to have major importance during the development of shock-related hypotension, impairment of microcirculatory perfusion, mitochondrial dysfunction, and tissue injury. It is well established that increasing the inhaled fraction of inspired oxygen (FiO2) leads to an increase in ROS production. The negative effects of hyperoxia in humans have been well demonstrated in a number of pathological conditions including stroke, myocardial infarction and some lung diseases. The pathological processes behind each of these conditions is very different from that of sepsis.
In a small observational study (88 patients) in patients with sepsis, of the hyperoxic patients, 8% died in hospital versus 6% with normoxia. Further prospective controlled trials are required. The deleterious effects of hyperoxia have also been demonstrated in a rat model.
Why hyperoxia may benefit patients with sepsis: Underlying cellular hypoxia, which may be difficult to detect, has been suggested as a major cause of morbidity and mortality in sepsis - this may be reversed or attenuated by high flow oxygen.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Adult patients aged 18 years or above.
- •Diagnosed with presumed 'Sepsis'.
- •Arrive at Derriford Emergency Department by ambulance.
- •Provision of informed consent.
- •Willing to allow their General Practitioner and consultant, if appropriate, to be notified of participation in the study.
排除标准
- •Female participants who are pregnant
- •Existing diagnosis of chronic obstructive pulmonary disease (COPD)
- •A primary diagnosis (or suspected diagnosis) of:
- •an acute cerebral vascular event
- •acute coronary syndrome
- •acute pulmonary oedema
- •status asthmatic
- •major cardiac arrhythmia (as part of primary diagnosis)
- •drug overdose
- •injury from burn or trauma
- •Participants who require immediate intubation and ventilation on arrival in the Emergency Department
- •Participants undergoing or have undergone cardiopulmonary resuscitation in the pre-hospital phase of their treatment.
- •Current participation in another Clinical Trial of an Investigational Medicinal Product (CTIMP).
研究组 & 干预措施
Hyperoxia
Oxygen will be administered using a non-re-breathe oxygen mask applied over the face and nose. The oxygen delivery device will be set to deliver oxygen at 15 litres per minute. The oxygen will be continuously delivered throughout the patients stay in the Emergency Department.
干预措施: Oxygen (Drug)
normoxia
Oxygen will not be administered if a patient's oxygen saturations (as measured using a pulse oximeter) are less than 94%. If a patient's oxygen saturations are less than 94%, oxygen will be 'titrated' using a 'venturi' type oxygen delivery device to achieve target saturations of 94%. Following initial dynamic titration (to identify correct oxygen delivery level) the oxygen delivery device will be re-evaluated hourly during the patient's stay in the emergency department.
干预措施: Oxygen (Drug)
结局指标
主要结局
Does delivery of high flow oxygen (hyperoxic oxygen therapy) compared to titrated oxygen therapy (normoxic oxygen therapy) reduce mortality at 90 days
时间窗: 90 days
Adult patients with sepsis presenting to the emergency department by ambulance.
次要结局
未报告次要终点