Clinical outcomes for chest pain patients discharged home from emergency departments using high-sensitivity versus conventional cardiac troponin assays

High-sensitivity cardiac troponin (hs-cTn) assays enhance detection of lower circulating troponin concentrations, but the impact on outcomes in clinical practice is unclear. Our objective was to compare outcomes of chest pain patients discharged from emergency departments (EDs) using hs-cTn and conv...

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Veröffentlicht in:The American heart journal 2020-03, Vol.221, p.84-94
Hauptverfasser: Lau, Geoffrey, Koh, Maria, Kavsak, Peter A., Schull, Michael J., Armstrong, David W.J., Udell, Jacob A., Austin, Peter C., Wang, Xuesong, Ko, Dennis T.
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container_issue
container_start_page 84
container_title The American heart journal
container_volume 221
creator Lau, Geoffrey
Koh, Maria
Kavsak, Peter A.
Schull, Michael J.
Armstrong, David W.J.
Udell, Jacob A.
Austin, Peter C.
Wang, Xuesong
Ko, Dennis T.
description High-sensitivity cardiac troponin (hs-cTn) assays enhance detection of lower circulating troponin concentrations, but the impact on outcomes in clinical practice is unclear. Our objective was to compare outcomes of chest pain patients discharged from emergency departments (EDs) using hs-cTn and conventional troponin (cTn) assays. We conducted an observational study of chest pain patients aged 40-105 years who presented to an ED from April 1, 2013, to March 31, 2017, and were discharged home. We compared 30-day and 1-year outcomes of EDs that used hs-cTn versus cTn assays. The primary outcome was a composite of all-cause death, myocardial infarction or unstable angina. Comparisons were conducted with (1) no adjustment; (2) adjustment for demographic, socioeconomic, and hospital characteristics; and (3) full clinical adjustment. Among the 394,910 patients, 62,138 (15.7%) were evaluated at hs-cTn EDs and 332,772 (84.3%) were evaluated at cTn EDs. Patients discharged from hs-cTn EDs were less likely to have diabetes, hypertension, or prior heart disease. At 30 days, the unadjusted primary outcome rate was lower in hs-cTn EDs (0.9% vs 1.0%, P 
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Our objective was to compare outcomes of chest pain patients discharged from emergency departments (EDs) using hs-cTn and conventional troponin (cTn) assays. We conducted an observational study of chest pain patients aged 40-105 years who presented to an ED from April 1, 2013, to March 31, 2017, and were discharged home. We compared 30-day and 1-year outcomes of EDs that used hs-cTn versus cTn assays. The primary outcome was a composite of all-cause death, myocardial infarction or unstable angina. Comparisons were conducted with (1) no adjustment; (2) adjustment for demographic, socioeconomic, and hospital characteristics; and (3) full clinical adjustment. Among the 394,910 patients, 62,138 (15.7%) were evaluated at hs-cTn EDs and 332,772 (84.3%) were evaluated at cTn EDs. Patients discharged from hs-cTn EDs were less likely to have diabetes, hypertension, or prior heart disease. At 30 days, the unadjusted primary outcome rate was lower in hs-cTn EDs (0.9% vs 1.0%, P &lt; .001). The 30-day hazard ratios for the primary outcome were 0.84 (95% CI 0.77-0.92) for no adjustment and 0.98 (95% CI 0.88-1.08) for full adjustment. Over 1 year, patients discharged from hs-cTn EDs had significantly fewer primary outcomes (3.7% vs 4.1%, P &lt; .001) and lower hazard ratio (0.93; 95% CI 0.89-0.98) even after full adjustment. 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All rights reserved.</rights><rights>2019. Elsevier Inc.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c311t-e94ef274f2638d3f6102c4356eb3d694387e586ce7c9a56a49cce2471f54051b3</citedby><cites>FETCH-LOGICAL-c311t-e94ef274f2638d3f6102c4356eb3d694387e586ce7c9a56a49cce2471f54051b3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.proquest.com/docview/2352307462?pq-origsite=primo$$EHTML$$P50$$Gproquest$$H</linktohtml><link.rule.ids>314,777,781,3537,27905,27906,45976,64364,64366,64368,72218</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/31954328$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Lau, Geoffrey</creatorcontrib><creatorcontrib>Koh, Maria</creatorcontrib><creatorcontrib>Kavsak, Peter A.</creatorcontrib><creatorcontrib>Schull, Michael J.</creatorcontrib><creatorcontrib>Armstrong, David W.J.</creatorcontrib><creatorcontrib>Udell, Jacob A.</creatorcontrib><creatorcontrib>Austin, Peter C.</creatorcontrib><creatorcontrib>Wang, Xuesong</creatorcontrib><creatorcontrib>Ko, Dennis T.</creatorcontrib><title>Clinical outcomes for chest pain patients discharged home from emergency departments using high-sensitivity versus conventional cardiac troponin assays</title><title>The American heart journal</title><addtitle>Am Heart J</addtitle><description>High-sensitivity cardiac troponin (hs-cTn) assays enhance detection of lower circulating troponin concentrations, but the impact on outcomes in clinical practice is unclear. Our objective was to compare outcomes of chest pain patients discharged from emergency departments (EDs) using hs-cTn and conventional troponin (cTn) assays. We conducted an observational study of chest pain patients aged 40-105 years who presented to an ED from April 1, 2013, to March 31, 2017, and were discharged home. We compared 30-day and 1-year outcomes of EDs that used hs-cTn versus cTn assays. The primary outcome was a composite of all-cause death, myocardial infarction or unstable angina. Comparisons were conducted with (1) no adjustment; (2) adjustment for demographic, socioeconomic, and hospital characteristics; and (3) full clinical adjustment. Among the 394,910 patients, 62,138 (15.7%) were evaluated at hs-cTn EDs and 332,772 (84.3%) were evaluated at cTn EDs. Patients discharged from hs-cTn EDs were less likely to have diabetes, hypertension, or prior heart disease. At 30 days, the unadjusted primary outcome rate was lower in hs-cTn EDs (0.9% vs 1.0%, P &lt; .001). The 30-day hazard ratios for the primary outcome were 0.84 (95% CI 0.77-0.92) for no adjustment and 0.98 (95% CI 0.88-1.08) for full adjustment. Over 1 year, patients discharged from hs-cTn EDs had significantly fewer primary outcomes (3.7% vs 4.1%, P &lt; .001) and lower hazard ratio (0.93; 95% CI 0.89-0.98) even after full adjustment. Hs-cTn testing was associated with a significantly lower adjusted hazard of myocardial infarction, angina, and all-cause hospitalization at 1 year but not 30 days.</description><subject>Acute Coronary Syndrome - complications</subject><subject>Acute Coronary Syndrome - diagnosis</subject><subject>Acute Coronary Syndrome - metabolism</subject><subject>Adult</subject><subject>Aged</subject><subject>Aged, 80 and over</subject><subject>Ambulatory care</subject><subject>Angina</subject><subject>Angina pectoris</subject><subject>Angina, Unstable - epidemiology</subject><subject>Assaying</subject><subject>Calcium-binding protein</subject><subject>Cardiovascular diseases</subject><subject>Chest</subject><subject>Chest Pain - etiology</subject><subject>Clinical Laboratory Techniques - methods</subject><subject>Clinical outcomes</subject><subject>Comorbidity</subject><subject>Coronary artery disease</subject><subject>Diabetes</subject><subject>Diabetes mellitus</subject><subject>Emergency medical care</subject><subject>Emergency medical services</subject><subject>Emergency Service, Hospital</subject><subject>FDA approval</subject><subject>Female</subject><subject>Health hazards</subject><subject>Heart diseases</subject><subject>Heart failure</subject><subject>Hospitalization - statistics &amp; 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Our objective was to compare outcomes of chest pain patients discharged from emergency departments (EDs) using hs-cTn and conventional troponin (cTn) assays. We conducted an observational study of chest pain patients aged 40-105 years who presented to an ED from April 1, 2013, to March 31, 2017, and were discharged home. We compared 30-day and 1-year outcomes of EDs that used hs-cTn versus cTn assays. The primary outcome was a composite of all-cause death, myocardial infarction or unstable angina. Comparisons were conducted with (1) no adjustment; (2) adjustment for demographic, socioeconomic, and hospital characteristics; and (3) full clinical adjustment. Among the 394,910 patients, 62,138 (15.7%) were evaluated at hs-cTn EDs and 332,772 (84.3%) were evaluated at cTn EDs. Patients discharged from hs-cTn EDs were less likely to have diabetes, hypertension, or prior heart disease. At 30 days, the unadjusted primary outcome rate was lower in hs-cTn EDs (0.9% vs 1.0%, P &lt; .001). The 30-day hazard ratios for the primary outcome were 0.84 (95% CI 0.77-0.92) for no adjustment and 0.98 (95% CI 0.88-1.08) for full adjustment. Over 1 year, patients discharged from hs-cTn EDs had significantly fewer primary outcomes (3.7% vs 4.1%, P &lt; .001) and lower hazard ratio (0.93; 95% CI 0.89-0.98) even after full adjustment. Hs-cTn testing was associated with a significantly lower adjusted hazard of myocardial infarction, angina, and all-cause hospitalization at 1 year but not 30 days.</abstract><cop>United States</cop><pub>Elsevier Inc</pub><pmid>31954328</pmid><doi>10.1016/j.ahj.2019.12.007</doi><tpages>11</tpages></addata></record>
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subjects Acute Coronary Syndrome - complications
Acute Coronary Syndrome - diagnosis
Acute Coronary Syndrome - metabolism
Adult
Aged
Aged, 80 and over
Ambulatory care
Angina
Angina pectoris
Angina, Unstable - epidemiology
Assaying
Calcium-binding protein
Cardiovascular diseases
Chest
Chest Pain - etiology
Clinical Laboratory Techniques - methods
Clinical outcomes
Comorbidity
Coronary artery disease
Diabetes
Diabetes mellitus
Emergency medical care
Emergency medical services
Emergency Service, Hospital
FDA approval
Female
Health hazards
Heart diseases
Heart failure
Hospitalization - statistics & numerical data
Humans
Hypertension
Information systems
Laboratories
Male
Middle Aged
Mortality
Myocardial infarction
Myocardial Infarction - epidemiology
Ontario - epidemiology
Pain
Patient Discharge
Patients
Personal health
Population
Prescription drugs
Proportional Hazards Models
Sensitivity
Troponin
Troponin I - analysis
Troponin I - metabolism
Troponin T - analysis
Troponin T - metabolism
title Clinical outcomes for chest pain patients discharged home from emergency departments using high-sensitivity versus conventional cardiac troponin assays
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