- ICH GCP
- Amerikanska kliniska prövningsregistret
- Klinisk prövning NCT01150825
Feasibility of High Frequency QRS Analysis in Patients With Acute Myocardial Infarction
Studieöversikt
Status
Betingelser
Detaljerad beskrivning
Chest pain is one of the leading reasons of hospital emergency department (ED) visits worldwide. In the US, approximately 6 million people annually undergo evaluation in the ED for acute chest pain. Despite the wealth of knowledge available about acute coronary syndrome (ACS), this condition continues to be among the most difficult to predict or diagnose. Misdiagnoses may lead to discharge of patients with ACS, who should have been admitted as well as costly unnecessary hospitalizations of patients who do not have ACS.
More than 2/3 of the patients with ACS have unstable angina (UA) or non-ST-elevation myocardial infarction (NSTEMI). Conventional ECG has low sensitivity of less than 50% in diagnosing these conditions. As the initial ECG in the ED is often non-diagnostic in ACS patients, the diagnosis of ST-elevation myocardial infarction (STEMI) during its early stages may also be difficult.
Analysis of high-frequency QRS components (HFQRS), which quantifies changes in the depolarization phase of the cardiac cycle, has been previously reported to be a sensitive method for detection of demand ischemia. Preliminary studies have shown that HFQRS-derived indices can also identify supply ischemia caused by prolonged balloon occlusion, and transient ischemic episodes in patients with chest pain.
Studietyp
Inskrivning (Förväntat)
Kontakter och platser
Studieorter
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Beer Sheva, Israel, 84101
- Rekrytering
- Soroka University Medical Center
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Deltagandekriterier
Urvalskriterier
Åldrar som är berättigade till studier
Tar emot friska volontärer
Kön som är behöriga för studier
Testmetod
Studera befolkning
Beskrivning
Inclusion Criteria:
- Age > 40 years (men and women)
- Time from onset of chest pain ≤ 12h
- AMI confirmed by biomarkers
- Clinical or electrocardiographic evidence of ischemia during recording
- Signed an informed consent
Exclusion Criteria:
- Prior MI
- Prior CABG
- pre-excitation syndrome (e.g. WP)
- Atrial Fibrillation or significant ventricular arrhythmia
- BBB, intraventricular conduction delay or QRS duration > 120 ms
- Implanted pacemaker or defibrillator
- Left-ventricular hypertrophy
Studieplan
Hur är studien utformad?
Designdetaljer
Kohorter och interventioner
Grupp / Kohort |
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STEMI
Patients with ST segment elevation myocardial infarction, verified by elevated troponin levels
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NSTEMI
Patients with non-ST segment elevation myocardial infarction, verified by elevated levels of troponin
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Vad mäter studien?
Primära resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
---|---|---|
Diagnosis of Acute Myocardial Infarction
Tidsram: Prior to hospitalization release
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The primary end-point of the study is diagnosis of acute myocardial infarction, based on cardiac biomarkers, ECG changes clinical symptoms and coronary angiography.
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Prior to hospitalization release
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Sekundära resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
---|---|---|
HFQRS analysis for detecting NSTEMI
Tidsram: Post data processing
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To evaluate the usefulness of HFQRS analysis in early detection of non-ST segment elevation myocardial infarction (NSTEMI).
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Post data processing
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Samarbetspartners och utredare
Utredare
- Huvudutredare: Doron Zahger, MD, Soroka University Medical Center
Publikationer och användbara länkar
Användbara länkar
Studieavstämningsdatum
Studera stora datum
Studiestart
Primärt slutförande (Förväntat)
Avslutad studie (Förväntat)
Studieregistreringsdatum
Först inskickad
Först inskickad som uppfyllde QC-kriterierna
Första postat (Uppskatta)
Uppdateringar av studier
Senaste uppdatering publicerad (Uppskatta)
Senaste inskickade uppdateringen som uppfyllde QC-kriterierna
Senast verifierad
Mer information
Termer relaterade till denna studie
Ytterligare relevanta MeSH-villkor
Andra studie-ID-nummer
- ER_02_5023
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