Rule Out Myocardial Infarction by Computer Assisted Tomography

NCT00990262 | Completed

• 2 other identifiers: 2003P000458R01HL080053-01
• Study Type: observational
• Target: 368
• Locations: 1 country
• Sites: 1

Brief Summary

The goal of this research is to determine noninvasively whether detection of coronary stenosis and plaque by multidetector computed tomography (MDCT) in patients with acute chest pain suspected of acute coronary syndrome (ACS) enhances triage, reduces cost and is cost effective. Among the 5.6 million patients with ACP presenting annually in emergency departments (ED) in the United States, a subgroup of two million patients is hospitalized despite normal initial cardiac biomarker tests and electrocardiogram (ECG). This subgroup is at low (20%) risk for ACS during the index hospitalization. Most (80-94%) patients with a diagnosis of ACS have a significant epicardial coronary artery stenosis ( \>50% luminal narrowing). However, in -10% of patients non-stenotic coronary plaque triggers events, i.e. vasospasms, leading to myocardial ischemia. Since the absence of plaque excludes a coronary cause of chest pain, these patients could in theory be discharged earlier reducing unnecessary hospital admissions. Recent publications demonstrate high sensitivity and specificity of MDCT for the detection of significant coronary stenosis compared with coronary angiography and the detection of coronary plaque as validated with intravascular ultrasound. Using 64- slice MDCT we propose to study 400 patients with ACP, negative initial cardiac biomarkers and non-diagnostic ECG. We will analyze MDCT images for the presence of significant coronary artery stenosis and plaque and correlate the data with the clinical diagnosis of ACS (AHA guidelines) during the index hospitalization to determine the sensitivity and specificity. MDCT data, risk factors, and the results of standard diagnostic tests available at the time of MDCT will be used to generate a multivariate prediction function and derive a clinical decision rule. Based on this decision rule we will compare the diagnostic accuracies and cost effectiveness of competing strategies. We hypothesize that an MDCT- based diagnostic strategy will reduce the time to diagnosis of ACS, number of hospitalizations, and absolute cost of management of patients with acute chest pain compared to standard clinical care and is cost effective.

Conditions

Acute Coronary Syndrome; Myocardial Infarction; Unstable Angina Pectoris

Keywords

acute chest pain; emergency department; cardiac computed tomography

Outcome Measures

Primary Outcomes (1)

• Accuracy of CT derived features of coronary artery disease and LV function for ACS

  ED presentation to hospital discharge

Secondary Outcomes (1)

• Major adverse cardiac events (MACE) - defined as death, myocardial infarction or coronary revascularization

  Follow up at 6 months and 2 year after index hospitalization

Study Arms (1)

Acute Chest Pain

Patients who presented to the emergency department with acute chest pain, with negative initial biomarkers and normal or non-ischemic ECG

Radiation: Cardiac Computed Tomography

Interventions

Cardiac Computed Tomography RADIATION

1. Localization of the heart position in a projectional topographic scan of the chest. 2. Determination of contrast agent transit time: 10 ml contrast agent. 3. CT coronary angiography: CT scan in spiral acquisition mode with 330 ms rotation time, 32 x 0.6 mm collimation, a pitch of 2.8 mm/rotation, tube voltage of 120 kVp, and maximum tube current of 850 mA. 80 ml of contrast agent, followed by 40 ml saline solution will be injected at a rate of 4 ml/s. The mean breath hold duration for this acquisition is approximately 13 seconds.

Acute Chest Pain

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)
• Sampling Method: Non-Probability Sample

Study Population

Patients who presented to the emergency department at Massachusetts General Hospital, with acute chest pain and with initial negative biomarkers and normal or non-ischemic ECG

You may qualify if:

• Patients with any episode \> five minutes of chest pain being admitted to rule out acute coronary syndrome

You may not qualify if:

• Positive initial troponin or CK-MB tests
• Diagnostic ECG changes (ST- segment elevation or horizontal ST- segment depression in more than two contiguous leads)
• Unstable clinical condition (hemodynamically unstable, ventricular tachycardia, persistent chest pain despite adequate therapy)
• Creatinine Clearance \<50 mL/min
• Known allergy to iodinated contrast agents
• Patients on metformin therapy unable or unwilling to discontinue therapy for 48 hours after CT scan procedure
• Known asthma, reactive airway disease
• Patients currently in atrial fibrillation
• Previous intolerance to beta blocker
• Patients that are referred for coronary angiography/PCI by their PCP or cardiologist.

Sponsors & Collaborators

• Massachusetts General Hospital: lead

Study Sites (1)

Massachusetts General Hospital

Boston, Massachusetts, 02114, United States

Location

Related Publications (12)

• Truong QA, Bamberg F, Mahabadi AA, Toepker M, Lee H, Rogers IS, Seneviratne SK, Schlett CL, Brady TJ, Nagurney JT, Hoffmann U. Left atrial volume and index by multi-detector computed tomography: comprehensive analysis from predictors of enlargement to predictive value for acute coronary syndrome (ROMICAT study). Int J Cardiol. 2011 Jan 21;146(2):171-6. doi: 10.1016/j.ijcard.2009.06.029. Epub 2009 Jul 16.

  PMID: 19615769 BACKGROUND

• Manini AF, Dannemann N, Brown DF, Butler J, Bamberg F, Nagurney JT, Nichols JH, Hoffmann U; Rule-Out Myocardial Infarction using Coronary Artery Tomography (ROMICAT) Study Investigators. Limitations of risk score models in patients with acute chest pain. Am J Emerg Med. 2009 Jan;27(1):43-48. doi: 10.1016/j.ajem.2008.01.022.

  PMID: 19041532 BACKGROUND

• Lehman SJ, Schlett CL, Bamberg F, Nieman K, Abbara S, Hoffmann U. Appearance of acute and chronic coronary occlusions in contrast-enhanced cardiac computed tomography. JACC Cardiovasc Imaging. 2008 Nov;1(6):809-11. doi: 10.1016/j.jcmg.2008.07.016. Epub 2008 Nov 18. No abstract available.

  PMID: 19356518 BACKGROUND

• Hoffmann U, Bamberg F, Chae CU, Nichols JH, Rogers IS, Seneviratne SK, Truong QA, Cury RC, Abbara S, Shapiro MD, Moloo J, Butler J, Ferencik M, Lee H, Jang IK, Parry BA, Brown DF, Udelson JE, Achenbach S, Brady TJ, Nagurney JT. Coronary computed tomography angiography for early triage of patients with acute chest pain: the ROMICAT (Rule Out Myocardial Infarction using Computer Assisted Tomography) trial. J Am Coll Cardiol. 2009 May 5;53(18):1642-50. doi: 10.1016/j.jacc.2009.01.052.

  PMID: 19406338 RESULT

• Mahabadi AA, Bamberg F, Toepker M, Schlett CL, Rogers IS, Nagurney JT, Brady TJ, Hoffmann U, Truong QA. Association of aortic valve calcification to the presence, extent, and composition of coronary artery plaque burden: from the Rule Out Myocardial Infarction using Computer Assisted Tomography (ROMICAT) trial. Am Heart J. 2009 Oct;158(4):562-8. doi: 10.1016/j.ahj.2009.07.027.

  PMID: 19781415 RESULT

• Truong QA, Toepker M, Mahabadi AA, Bamberg F, Rogers IS, Blankstein R, Brady TJ, Nagurney JT, Hoffmann U. Relation of left ventricular mass and concentric remodeling to extent of coronary artery disease by computed tomography in patients without left ventricular hypertrophy: ROMICAT study. J Hypertens. 2009 Dec;27(12):2472-82. doi: 10.1097/HJH.0b013e328331054a.

  PMID: 19696685 RESULT

• Hoffmann U, Nagurney JT, Moselewski F, Pena A, Ferencik M, Chae CU, Cury RC, Butler J, Abbara S, Brown DF, Manini A, Nichols JH, Achenbach S, Brady TJ. Coronary multidetector computed tomography in the assessment of patients with acute chest pain. Circulation. 2006 Nov 21;114(21):2251-60. doi: 10.1161/CIRCULATIONAHA.106.634808. Epub 2006 Oct 30.

  PMID: 17075011 RESULT

• Karady J, Mayrhofer T, Ferencik M, Nagurney JT, Udelson JE, Kammerlander AA, Fleg JL, Peacock WF, Januzzi JL Jr, Koenig W, Hoffmann U. Discordance of High-Sensitivity Troponin Assays in Patients With Suspected Acute Coronary Syndromes. J Am Coll Cardiol. 2021 Mar 30;77(12):1487-1499. doi: 10.1016/j.jacc.2021.01.046.

  PMID: 33766254 DERIVED

• Ferencik M, Mayrhofer T, Lu MT, Woodard PK, Truong QA, Peacock WF, Bamberg F, Sun BC, Fleg JL, Nagurney JT, Udelson JE, Koenig W, Januzzi JL, Hoffmann U. High-Sensitivity Cardiac Troponin I as a Gatekeeper for Coronary Computed Tomography Angiography and Stress Testing in Patients with Acute Chest Pain. Clin Chem. 2017 Nov;63(11):1724-1733. doi: 10.1373/clinchem.2017.275552. Epub 2017 Sep 18.

  PMID: 28923845 DERIVED

• Pursnani A, Lee AM, Mayrhofer T, Ahmed W, Uthamalingam S, Ferencik M, Puchner SB, Bamberg F, Schlett CL, Udelson J, Hoffmann U, Ghoshhajra BB. Early resting myocardial computed tomography perfusion for the detection of acute coronary syndrome in patients with coronary artery disease. Circ Cardiovasc Imaging. 2015 Mar;8(3):e002404. doi: 10.1161/CIRCIMAGING.114.002404.

  PMID: 25752898 DERIVED

• Hulten E, Goehler A, Bittencourt MS, Bamberg F, Schlett CL, Truong QA, Nichols J, Nasir K, Rogers IS, Gazelle SG, Nagurney JT, Hoffmann U, Blankstein R. Cost and resource utilization associated with use of computed tomography to evaluate chest pain in the emergency department: the Rule Out Myocardial Infarction using Computer Assisted Tomography (ROMICAT) study. Circ Cardiovasc Qual Outcomes. 2013 Sep 1;6(5):514-24. doi: 10.1161/CIRCOUTCOMES.113.000244. Epub 2013 Sep 10.

  PMID: 24021693 DERIVED

• Seneviratne SK, Truong QA, Bamberg F, Rogers IS, Shapiro MD, Schlett CL, Chae CU, Cury R, Abbara S, Brady TJ, Nagurney JT, Hoffmann U. Incremental diagnostic value of regional left ventricular function over coronary assessment by cardiac computed tomography for the detection of acute coronary syndrome in patients with acute chest pain: from the ROMICAT trial. Circ Cardiovasc Imaging. 2010 Jul;3(4):375-83. doi: 10.1161/CIRCIMAGING.109.892638. Epub 2010 May 19.

  PMID: 20484542 DERIVED

Biospecimen

Retention: SAMPLES WITH DNA

Plasma

MeSH Terms

Conditions

Acute Coronary Syndrome; Myocardial Infarction; Angina, Unstable; Emergencies

Condition Hierarchy (Ancestors)

Myocardial Ischemia; Heart Diseases; Cardiovascular Diseases; Vascular Diseases; Infarction; Ischemia; Pathologic Processes; Pathological Conditions, Signs and Symptoms; Necrosis; Angina Pectoris; Chest Pain; Pain; Neurologic Manifestations; Signs and Symptoms; Disease Attributes

Study Officials

• Udo Hoffmann, MD, MPH

  Massachusetts General Hospital

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: observational
• Observational Model: COHORT
• Time Perspective: PROSPECTIVE
• Sponsor Type: OTHER

Study Record Dates

• First Submitted: September 30, 2009
• First Posted: October 6, 2009
• Study Start: May 1, 2005
• Primary Completion: May 1, 2007
• Study Completion: April 1, 2009
• Last Updated: October 6, 2009

Record last verified: 2009-10

Locations

US (1)