Non Invasive dP/dt to Detect an Acute Ischemic Myocardial Dysfunction in Emergency Department

NCT ID: NCT02138604

Last Updated: 2020-07-20

Basic Information

• Recruitment Status: COMPLETED
• Total Enrollment: 500 participants
• Study Classification: OBSERVATIONAL
• Study Start Date: 2013-06-30
• Study Completion Date: 2016-12-31

Brief Summary

Most patients presenting to the emergency department with chest discomfort have a nonischemic ECG and biomarkers of myocardial necrosis within normal limits. These patients are routinely admitted to hospital because of diagnostic uncertainty for occult MI or ischaemia.

Acute myocardial ischemia is associated with acute mycardial dysfunction We tested a non-invasive plethysmographic arterial pressure change index of myocardial performance (dP/dt) that could be added to the diagnostic triage of ischaemia in the ER avoiding unnecessary admissions.

Detailed Description

For patients with chest pain , the ECG remains the most important initial risk assessment tool. Myocardial ischemia or infarction is highly likely in patients with significant ST segment changes on the ECG or elevation in myocardial markers of necrosis. Identification of high-risk patients is more difficult in those with non ischemic ECG and negative markers on presentation.

One of the most sensitive indices of contractility is the rate of increase of intraventricular pressure during isovolumetric contraction, (left ventricular dP/dt and arterial dP/dt). Dp/dt (dP/dt ejc ) represents the rate of change of pressure during ejection. It has been shown that cardiac contractility and dP/dt decreases during acute myocardial ischemia.

We theorized that a higher value of dP/dt would be found for non ischemic chest pain than during ischemic chest pain because ischemia reduces myocardial contractility, whereas chest pain of non cardiac origin increases dP/dt by the stress of the pain itself.

The current study describes a noninvasive plethysmographic dP/dt changes in patients presenting at the emergency department with acute chest pain, which could be added to the diagnostic triage of ischemia in the ED, thus decreasing the number of unnecessary admissions.

Conditions

Acute Myocardial Ischemia

Study Design

• Observational Model Type: COHORT
• Study Time Perspective: PROSPECTIVE

Eligibility Criteria

Inclusion Criteria

• age over 18 year old
• Chest pain that lasted less than 12 hours

Exclusion Criteria

• traumatic chest pain
• arrythmias
• STEMI

• Minimum Eligible Age: 18 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

University of Monastir

OTHER

Sponsor Role: lead

Responsible Party

Pr. Semir Nouira

Non invasive dP/dt is not a good index to detect an acute ischemic myocardial dysfunction in emergency department (ED)

Responsibility Role: PRINCIPAL_INVESTIGATOR

Principal Investigators

semir Nouira, Pr

Role: PRINCIPAL_INVESTIGATOR

University of Monastir

Locations

Nouira Semir

Monastir, CHU Fattouma Bourguiba, Tunisia

Countries

Tunisia

Other Identifiers

dp/dt to detect AMD in ED

Identifier Type: -

Identifier Source: org_study_id