Optimizing the Previs Device for Prediction of Postoperative Ileus
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 203
- 试验地点
- 2
- 主要终点
- Device Sensitivity for Predicting Ileus.
研究概览
简要总结
The research proposed in this study will develop a noninvasive prototype device that will capture intestinal sounds, process signals, and display predictive information in real-time at the point-of-care using algorithms already developed at this institution.
详细描述
Following major abdominal surgery, up to 30% of patients develop a poorly understood condition known as ileus. When ileus occurs, the bowels shut down and patients often develop abdominal dissension, nausea, vomiting, and even more serious complications. Because this condition does not develop until many days after surgery has been completed, clinicians do not know if they should begin allowing patients to eat or withhold nutrition until they show signs of bowel function such as passing gas or having bowel movements. Clinicians have different approaches but none are ideal: 1) feed all patients early and the ones that develop an ileus will have their diets reverse, suction tube placed in their stomach, and hopefully don't get develop more serious complications, or 2) don't feed patients until they pass gas or have a bowel movement, which delays nutrition and prolongs hospital stays for the 70% of patients who will not develop an ileus
Participants in this study will be asked to wear a 3-ounce device that adheres to the skin of the abdominal wall for 10 days. They will also be asked to answer questions each day of their hospital stay regarding how they have tolerated eating.
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 主要目的
- Diagnostic
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 100 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Patients undergoing elective intestinal resection surgery by the colorectal surgery service at UIHC.
- •Age 18 to 100.
排除标准
- •Allergies to any of the device components. Inability to have prototype device applied to their abdominal wall due to a condition (ie:fistulas, stomas, drains, etc).
结局指标
主要结局
Device Sensitivity for Predicting Ileus.
时间窗: Each patient's device's data was assessed at day 15.
Calculate the sensitivity of the device to predict ileus, as defined by the number of patients with device-predicted ileus (true positive) as compared to the number both with device-predicted ileus and with ileus that the device did not predict (true positive + false negative).
Device Specificity for Predicting Ileus
时间窗: Each patient's device's data was assessed at day 15.
Calculate the specificity of the device to predict ileus, as defined by the number of patients where the device correctly predicted no ileus (true negative) as compared to the number both with device correctly predicting no ileus and device incorrectly predicting ileus (true negative plus false positive).
Device Positive Predictive Value for Predicting Ileus
时间窗: Each patient's device's data was assessed at day 15.
Calculate the positive predictive value of the device to predict ileus, as defined by the number of patients with device-predicted ileus (true positive) as compared to the number both with device-predicted ileus and with device incorrectly predicting ileus (true positive plus false positive).
Device Negative Predictive Value for Predicting Ileus
时间窗: Each patient's device's data was assessed at day 15.
Calculate the negative predictive value of the device to predict ileus, as defined by the number of patients where the device correctly predicted no ileus (true negative) as compared to the number both with device correctly predicted no ileus and with ileus the device did not predict (true negative plus false negative).
次要结局
未报告次要终点
研究者
Jennifer Hrabe
Clinical Assistant Professor
University of Iowa