Clinical trial NCT03173716: Real-Time Myocardial Perfusion Echocardiography in the ICU
Official title: (RTMPE in the ICU) The Impact of Real-Time Myocardial Perfusion Echocardiography on Diagnostic Confidence and Subsequent Management of Myocardial Ischemia in the Intensive Care Unit
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: PHASE4
Conditions: Myocardial Perfusion Imaging
Keywords: DEFINITY contrast
Lead sponsor: Mayo Clinic
Sponsor class: OTHER
Collaborators: name: Lantheus Medical Imaging
First posted: 2017-06-02
Enrollment: 24
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: DIAGNOSTIC

Brief summary: This study is being done to find out if and how much the use of RTMPE improves a provider's confidence in the diagnosis they assign. This is important because the use of RTMPE may decrease the need for any additional invasive testing.

Detailed description: The finding of elevated troponins and regional wall motion abnormalities on echocardiography in the absence of other signs of acute coronary syndrome among the intensive care population creates a diagnostic challenge for evaluation. Sometimes these ill patients undergo invasive coronary angiography to rule out acute thrombosis. Real-Time Myocardial Perfusion Echocardiography (RTMPE) is a safe and accurate imaging modality to assess perfusion and can be performed in the resting state at the bedside in the intensive care unit (ICU) to help stratify the likelihood intracoronary thrombosis as the etiology for abnormal troponins and/or echocardiography. The primary aim of this study is to evaluate the impact of RTMPE on providers' diagnostic confidence using a 5-point Likert scale for patients that receive a standard transthoracic echocardiogram (TTE) compared to patients that receive RTMPE. The RTMPE to assess perfusion will be added to the standard transthoracic echocardiogram in approximately 24 patients undergoing evaluation of myocardial ischemia in medical or surgical ICUs. The caring provider will complete a web-based survey regarding their confidence in the diagnosis prior to and after the study in both groups. The images will be interpreted by an experienced cardiologist and results will be made available in the medical record. The difference in diagnostic confidence scores will be analyzed using the Wilcoxon signed-rank test. The secondary aims are to assess the management and outcomes in both groups.

Eligibility criteria: Inclusion Criteria:

1. Adults age ≥ 18 years
2. Located in a designated ICU
3. TTE ordered by the primary care team
4. Significant delta in troponin trend
5. Concern for myocardial ischemia
6. Women of child-bearing potential must have a clinical negative pregnancy test result
7. Experienced sonographer available to complete RTMPE portion of the exam
8. Provider willing to complete the study survey

Exclusion Criteria:

1. Adults \< 18 years
2. Contraindication to echo contrast administration
3. Location other than an ICU
4. No significant delta in troponin trend

Primary outcomes:
measure: Change from Baseline Diagnostic Confidence Post-Echocardiography
timeFrame: through study completion, anticipated 1 year
Secondary outcomes:
Other outcomes:
Locations:
city: Rochester
country: United States
facility: Mayo Clinic
state: Minnesota
Study officials:
affiliation: Mayo Clinic
name: Patricia A. Pellikka
role: PRINCIPAL_INVESTIGATOR
References: