The Impact of Routine Administration of Aminophylline Following Regadenoson According to the ASSUAGE Protocol on the Accuracy of Regadenoson Stress Myocardial Perfusion Imaging: A Single-Blinded Cross-Over Clinical Trial
试验速览
- 阶段
- 4 期
- 状态
- 撤回
- 试验地点
- 1
- 主要终点
- Summed Difference Score (SDS); a measure of size and severity of ischemia (heart muscle in jeopardy) detected with regadenoson nuclear stress of the heart (standard vs. ASSUAGE protocol).
研究概览
简要总结
The investigators developed a modified regadenoson nuclear stress test of the heart that incorporates an aminophylline injection following regadenoson (The ASSUAGE protocol). The modified (ASSUAGE) protocol has been associated with fewer side effects and was better tolerated by patients.
This study will investigate whether the modified regadenoson stress protocol (ASSUAGE) produces blood flow pattern to the heart similar to that of a standard regadenoson stress protocol. In proven to be the case, the ASSUAGE protocol has the potential to be used on a wide scale instead of the current standard protocol.
详细描述
Patients who had regadenoson stress nuclear stress test of the heart will be invited to return to undergo a modified nuclear stress using the modified (ASSUAGE) protocol. Images from the original scan will be compared to those from the second scan to determine whether the blood flow pattern is similar between the two scans.
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
- Single (Outcomes Assessor)
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
- •Patients who have had a qualifying regadenoson stress myocardial perfusion imaging (regadenoson nuclear stress test).
排除标准
- •inability to provide an informed consent
- •known allergic reaction to aminophylline or regadenoson
- •systolic blood pressure < 90 mmHg
- •unstable abnormal heart rhythm
- •pulmonary edema
- •acute coronary symptoms, myocardial infarction within 48 hours
- •active dipyridamole, aminophylline or theophylline use
- •pregnancy
- •any contraindication to aminophylline according to the drug's package insert: uncontrolled seizure disorder, sepsis with multi-organ failure and liver impairment
研究组 & 干预措施
ASSUAGE Protocol
There is only one arm in this cross-over design trial. Patients who had a standard regadenoson stress test will be invited to enroll in the study. All enrolled subjects will undergo an investigational (ASSUAGE) regadenoson stress test. Imaging scans from the same patients (scan 1 and scan 2) will be compared.
干预措施: ASSUAGE Protocol (Drug)
结局指标
主要结局
Summed Difference Score (SDS); a measure of size and severity of ischemia (heart muscle in jeopardy) detected with regadenoson nuclear stress of the heart (standard vs. ASSUAGE protocol).
时间窗: The second (investigational) stress will be performed within 4 weeks from the intial one.
The SDS produced with standard protocol will be compared to SDS produced with the modified (ASSUAGE) protocol. The study is set out to demonstrate that there is no significant difference in SDS between the two protocols within the same patients.
次要结局
- Agreement rate in the SDS burden category (normal/mild, moderate or severe)(within 4 weeks)