title: Initial experience with a cardiologist-based chest pain unit in an emergency department in Israel.
abstract: BACKGROUND
  Emergency room triage of patients presenting with chest pain syndromes may be difficult. Under-diagnosis may be dangerous, while over-diagnosis may be costly.
  
  
  OBJECTIVE
  To report our initial experience with an emergency room cardiologist-based chest pain unit in Israel.
  
  
  METHODS
  During a 5 week pilot study, we examined resource utilization and ER diagnosis in 124 patients with chest pain of uncertain etiology or non-high risk acute coronary syndrome. First assessment was performed by the ER physicians and was followed by a second assessment by the CPU team. Assessment was based on the following parameters: medical history and examination, serial electrocardiography, hematology, biochemistry and biomarkers for ACS, exercise stress testing and/or 64-slice multi-detector cardiac computed tomography angiography. Changes in decision between initial assessment and final CPU assessment with regard to hospitalization and utilization of resources were recorded.
  
  
  RESULTS
  All patients had at least two cardiac troponin T measurements, 19 underwent EST, 9 echocardiography and 29 cardiac MDCT. Fourteen patients were referred for early cardiac catheterization (same/next day). A specific working diagnosis was reached in 71/84 patients hospitalized, including unstable angina in 39 (31%) and non-ST elevation myocardial infarction in 12 (10%). Following CPU assessment, 40/124 patients (32%) were discharged, 49 (39%) were admitted to Internal Medicine and 35 (28%) to the Cardiology departments. CPU assessment and extended resources allowed discharge of 30/101 patients (30%) who were initially identified as candidates for hospitalization after ER assessment. Furthermore, 13/23 patients (56%) who were candidates for discharge after initial ER assessment were eventually hospitalized. Use of non-invasive tests was significantly greater in patients discharged from the ER (85% vs. 38% patients hospitalized) (P < 0.0001). The mean ER stay tended to be longer (14.9 +/- 8.6 hours vs. 12.9 +/- 11, P = NS) for patients discharged. At 30 days follow-up, there were no adverse events (myocardial infarction or death) in any of the 40 patients discharged from the ER after CPU assessment. One patient returned to the ER because of chest pain and was discharged after reassessment.
  
  
  CONCLUSIONS
  Our initial experience showed that an ER cardiologist-based chest pain unit improved assessment of patients presenting to the ER with chest pain, and enhanced appropriate use of diagnostic tests prior to a decision regarding admission/discharge from the ER.
authors.affiliation: Department of Cardiovascular Medicine, Carmel Medical Center, Haifa, Israel. adironen@netvision.net.il
authors.forename: Ronen
authors.initials: R
authors.lastname: Rubinshtein
authors.forename: David A
authors.initials: DA
authors.lastname: Halon
authors.forename: Asia
authors.initials: A
authors.lastname: Kogan
authors.forename: Ronen
authors.initials: R
authors.lastname: Jaffe
authors.forename: Basheer
authors.initials: B
authors.lastname: Karkabi
authors.forename: Tamar
authors.initials: T
authors.lastname: Gaspar
authors.forename: Moshe Y
authors.initials: MY
authors.lastname: Flugelman
authors.forename: Reuma
authors.initials: R
authors.lastname: Shapira
authors.forename: Amnon
authors.initials: A
authors.lastname: Merdler
authors.forename: Basil S
authors.initials: BS
authors.lastname: Lewis
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002309:Cardiology; D002637:Chest Pain / Q000209:etiology*; D004636:Emergency Service, Hospital; D005260:Female; D006331:Heart Diseases / Q000175:diagnosis*; D006757:Hospital Units; D006760:Hospitalization; D006801:Humans; D008297:Male; D008875:Middle Aged; D010865:Pilot Projects; D014218:Triage; D020107:Troponin T / Q000097:blood; D000078329:Workforce
chemical_list: D020107:Troponin T