Validation of the Nexfin Non-invasive Cardiac Output Monitor in Patients Undergoing Hip Fracture Repair
试验速览
- 阶段
- 不适用
- 状态
- 终止
- 入组人数
- 6
- 试验地点
- 2
- 主要终点
- Bias and limits of agreement of Nexfin recorded cardiac output compared with LiDCOplus
研究概览
简要总结
Measurement of how much blood the heart pumps may be useful in guiding how much intravenous fluid to give patients during surgery. The current monitors either require special drips (arterial and/or central lines) or a probe inserted into the oesophagus (food pipe) which may limit their use. Newer monitors are available which are completely non-invasive and seem to work well in younger patients. Patients with hip fracture are elderly and frail. The investigators wish to see whether the newer non-invasive monitor works well enough compared to the current monitors in this group of patients. If it does this may allow more of these patients to be monitored in this way.
详细描述
The investigators wish to compare the accuracy of the newer, non-invasive monitor (Nexfin) against a more established minimally invasive monitor (LiDCO). The LiDCO has a calibration system which allows the absolute accuracy of the Nexfin to be established.
研究设计
- 研究类型
- Observational
- 观察模型
- Cohort
- 时间视角
- Prospective
入排标准
- 年龄范围
- 80 Years 至 —（Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Aged over 80
- •Able to give their own informed consent
排除标准
- •Severe valvular heart disease
- •Taking lithium
结局指标
主要结局
Bias and limits of agreement of Nexfin recorded cardiac output compared with LiDCOplus
时间窗: During anaesthesia period of surgery - measurements will be complete within 30 minutes of starting anaesthesia
Analysis of agreement between Nexfin cardiac output and the calibrated cardiac output measured by LiDCOplus
次要结局
- Bias and limits of agreement for change in cardiac output measured by Nexfin compared with LiDCO(During anaesthesia period of surgery - measurements will be complete within 30 minutes of starting anaesthesia)
- Utility of Nexfin monitor(Intra-operative - average duration about 1 hour)
- Adverse events associated with Nexfin monitor(Intra-operative - average duration about one hour)