PMID- 35969395 OWN - NLM STAT- MEDLINE DCOM- 20220817 LR - 20220915 IS - 2574-3805 (Electronic) IS - 2574-3805 (Linking) VI - 5 IP - 8 DP - 2022 Aug 1 TI - Association of Chest Pain Protocol-Discordant Discharge With Outcomes Among Emergency Department Patients With Modest Elevations of High-Sensitivity Troponin. PG - e2226809 LID - 10.1001/jamanetworkopen.2022.26809 [doi] LID - e2226809 AB - IMPORTANCE: Accelerated diagnostic protocols (ADPs) for chest pain using high-sensitivity troponin (hsTn) levels have excellent sensitivity and negative predictive value for rapid risk stratification of patients with chest pain. However, little is known about the outcomes of patients who are discharged despite abnormal ADP results, ie, after "ruling-in" with a modest elevation of hsTn. OBJECTIVE: To determine outcomes of patients discharged following ADP, including those who were ruled in with modestly elevated levels of hsTnT but discharged nonetheless. DESIGN, SETTING, AND PARTICIPANTS: This retrospective cohort study included patients with chest pain who presented to the emergency departments (EDs) of a large multisite health system ED between January 2017 to September 2019. Patients were assessed using an ADP, had a peak hsTnT level measured between the limit of quantitation and 52 ng/L, were discharged, and had follow-up in the electronic medical record. Data analysis was conducted from January 2017 to September 2019. EXPOSURES: Application of an hsTnT ADP. MAIN OUTCOMES AND MEASURES: Thirty-day major adverse cardiac events (MACE), including myocardial infarction, urgent coronary revascularization, and all-cause death, comparing patients who were discharged following ADP-concordant vs ADP-discordant results. RESULTS: Of 10 342 patients with chest pain (mean [SD] age 51 [17] years; 5902 [57%] women) discharged following ADP, 29 (0.28%) had MACE. Patients with MACE were older (median [IQR] age, 66 [53-75] years vs 50 [38-62] years; P < .001) and more likely to have prior CAD (12 [41.4%] vs 1805 [17.5%]; P = .002) and hyperlipidemia (13 [44.8%] vs 2248 [21.8%]; P = .006). Additionally, patients with MACE were 5-fold more likely to have been discharged despite ADP discordance (16 [55.2%] vs 1145 [11.1%]; P < .001). A multivariable logistic regression analysis revealed only ADP discordance was independently associated with MACE (odds ratio, 6.42 [95% CI, 2.94-14.0]; P < .001). When stratified by peak hsTnT level, there were no differences in MACE between ADP-concordant and -discordant discharges provided the peak hsTnT measured was less than 12 ng/L. In contrast, patients with peak hsTnT level between 12 and 51 ng/L were significantly more likely to have MACE if they were discharged after ADP-discordant vs -concordant hsTnT series (14 of 609 [2.30%] vs 5 of 1047 [0.48%]; P < .002). Notably, a HEART (history, electrocardiogram, age, risk factors, troponin) score of 4 or greater retrospectively identified the most ADP-discordant discharges (13 of 16 [81.3%]) who had MACE. CONCLUSIONS AND RELEVANCE: In this cohort study, an hsTnT ADP identified patients who could be discharged from the ED with low 30-day risk of MACE, provided the discharge was based on ADP-concordant "rule-out." Conversely, the rate of MACE was significantly higher among patients discharged despite ADP discordance. Most patients with ADP-discordant discharges who experienced MACE had a HEART score of 4 or greater, suggesting that application of this score may augment discharge decisions of patients despite ADP-discordant troponin series. FAU - Khan, Ayesha AU - Khan A AD - Geisinger Northeast Internal Medicine Residency Program, Wilkes-Barre, Pennsylvania. FAU - Saleem, Muhammad S AU - Saleem MS AD - Geisinger Northeast Internal Medicine Residency Program, Wilkes-Barre, Pennsylvania. FAU - Willner, Keith D AU - Willner KD AD - Department of Emergency Medicine, Geisinger Wyoming Valley Hospital, Wilkes-Barre, Pennsylvania. FAU - Sullivan, Luke AU - Sullivan L AD - Department of Emergency Medicine, Geisinger Wyoming Valley Hospital, Wilkes-Barre, Pennsylvania. FAU - Yu, Elsie AU - Yu E AD - Geisinger Health System, Laboratory Medicine, Danville, Pennsylvania. FAU - Mahmoud, Osama AU - Mahmoud O AD - Heart Institute, Geisinger Medical Center, Danville, Pennsylvania. FAU - Alsaid, Amro AU - Alsaid A AD - Heart Institute, Geisinger Medical Center, Danville, Pennsylvania. FAU - Matsumura, Martin E AU - Matsumura ME AD - Pearsall Heart Hospital, Geisinger Health System, Wilkes Barre, Pennsylvania. LA - eng PT - Journal Article DEP - 20220801 PL - United States TA - JAMA Netw Open JT - JAMA network open JID - 101729235 RN - 0 (Troponin) RN - 61D2G4IYVH (Adenosine Diphosphate) SB - IM EIN - JAMA Netw Open. 2022 Sep 1;5(9):e2235575. PMID: 36107433 MH - *Acute Coronary Syndrome/diagnosis MH - Adenosine Diphosphate MH - Adult MH - Aged MH - *Chest Pain/diagnosis/etiology MH - Emergency Service, Hospital MH - Female MH - Humans MH - Male MH - Middle Aged MH - *Patient Discharge MH - Retrospective Studies MH - Risk Factors MH - *Troponin PMC - PMC9379744 COIS- Conflict of Interest Disclosures: Dr Yu reported receiving personal fees from Roche Diagnostics outside the submitted work. No other disclosures were reported. EDAT- 2022/08/16 06:00 MHDA- 2022/08/18 06:00 PMCR- 2022/08/15 CRDT- 2022/08/15 11:33 PHST- 2022/08/15 11:33 [entrez] PHST- 2022/08/16 06:00 [pubmed] PHST- 2022/08/18 06:00 [medline] PHST- 2022/08/15 00:00 [pmc-release] AID - 2795142 [pii] AID - zoi220762 [pii] AID - 10.1001/jamanetworkopen.2022.26809 [doi] PST - epublish SO - JAMA Netw Open. 2022 Aug 1;5(8):e2226809. doi: 10.1001/jamanetworkopen.2022.26809.