Patterns of use of targeted temperature management for acute myocardial infarction patients following out-of-hospital cardiac arrest: Insights from the National Cardiovascular Data Registry

Abstract Background Transthoracic echocardiographic (TTE) indices of myocardial function among survivors of out-of-hospital cardiac arrest (OHCA) have been related to neurological outcome; however, results are inconsistent. We hypothesized that changes in average peak systolic mitral annular velocity (s’) from 24 h (h) to 72 h following start of targeted temperature management (TTM) predict six-month neurological outcome in comatose OHCA survivors. Methods We investigated the association between peak systolic velocity of the mitral plane (s’) and six-month neurological outcome in a population of 99 patients from a randomised controlled trial comparing TTM at 33 ± 1 °C for 24 h (h) (n = 47) vs. 48 h (n = 52) following OHCA (TTH48-trial). TTE was conducted at 24 h, 48 h, and 72 h after reaching target temperature. The primary outcome was 180 days neurological outcome assessed by Cerebral Performance Category score (CPC180) and the primary TTE outcome measure was s’. Secondary outcome measures were left ventricular ejection fraction (LVEF), global longitudinal strain (GLS), e’, E/e’ and tricuspid annular plane systolic excursion (TAPSE). Results Across all three scan time points s’ was not associated with neurological outcome (ORs: 24 h: 1.0 (95%CI: 0.7–1.4, p = 0.98), 48 h: 1.13 (95%CI: 0.9–1.4, p = 0.34), 72 h: 1.04 (95%CI: 0.8–1.4, p = 0.76)). LVEF, GLS, E/e’, and TAPSE recorded on serial TTEs following OHCA were neither associated with nor did they predict CPC180. Estimated median e’ at 48 h following TTM was 5.74 cm/s (95%CI: 5.27–6.22) in patients with good outcome (CPC180 1–2) vs. 4.95 cm/s (95%CI: 4.37–5.54) in patients with poor outcome (CPC180 3–5) (p = 0.04). Conclusions s’ assessed on serial TTEs in comatose survivors of OHCA treated with TTM was not associated with CPC180. Our findings suggest that serial TTEs in the early post-resuscitation phase during TTM do not aid the prognostication of neurological outcome following OHCA. Trial registration NCT02066753. Registered 14 February 2014 – Retrospectively registered,

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Admission biomarkers among patients with acute myocardial-infarction related cardiogenic shock with or without out-of-hospital cardiac arrest

European Heart Journal Acute Cardiovascular Care ◽

10.1093/ehjacc/zuab020.090 ◽

2021 ◽

Vol 10 (Supplement_1) ◽

Author(s):

M Thoegersen ◽

M Frydland ◽

O Helgestad ◽

LO Jensen ◽

J Josiassen ◽

...

Keyword(s):

Myocardial Infarction ◽

Acute Myocardial Infarction ◽

Cardiac Arrest ◽

Coronary Angiography ◽

Cardiogenic Shock ◽

Plasma Concentrations ◽

Endothelial Damage ◽

Soluble Thrombomodulin ◽

Catheterization Laboratory ◽

Hospital Cardiac Arrest

Abstract Funding Acknowledgements Type of funding sources: Foundation. Main funding source(s): Lundbeck Foundation OnBehalf Critical Cardiac Care Research Group Background Approximately half of all patients with acute myocardial infarction complicated by cardiogenic shock (AMICS) present with out-of-hospital cardiac arrest (OHCA). Cardiogenic shock due to OHCA is caused by abrupt cessation of circulation, whereas AMICS without OHCA is due to cardiac failure with low cardiac output. Thus, there may also be differences between the two conditions in terms of blood borne biomarkers. Purpose To explore the potential differences in the admission plasma concentrations of biomarkers reflecting tissue perfusion (lactate), neuroendocrine response (mid-regional proadrenomedullin [MRproADM], Copeptin, pro-atrial natriuretic peptide [proANP]), endothelial damage (Syndecan-1, soluble thrombomodulin [sTM]), inflammation (soluble suppression of tumorigenicity 2 [sST2]) and kidney injury (neutrophil gelatinase-associated lipocalin [NGAL]), in patients with AMICS presenting with or without OHCA. Method Consecutive patients admitted for acute coronary angiography due to suspected ST-elevation myocardial infarction (STEMI) were enrolled during a 1-year period. A total of 2,713 patients were screened. In the present study 86 patients with confirmed STEMI and CS at admission were included. Results Patients with OHCA (had significantly higher median admission concentrations of Lactate (6,9 mmol/L vs. 3.4 mmol/L p <0.001), NGAL (220 ng/ml vs 150 ng/ml p = 0.046), sTM (10 ng/ml vs. 8.0 ng/ml p = 0.026) and Syndecan-1 (160 ng/ml vs. 120 ng/ml p= 0.015) and significantly lower concentrations of MR-proADM (0.85 nmol/L vs. 1.6 nmol/L p <0.001) and sST2 (39 ng/ml vs. 62 ng/ml p < 0.001). After adjusting for age, sex, and time from symptom onset to coronary angiography, lactate (p = 0.008), NGAL (p = 0.03) and sTM (p = 0.011) were still significantly higher in patients presenting with OHCA while sST2 was still significantly lower (p = 0.029). There was very little difference in 30-day mortality between the OHCA and non-OHCA groups (OHCA 37% vs. non-OHCA 38%). Conclusion Patients with STEMI and CS at admission with or without concomitant OHCA had similar 30-day mortality but differed in terms of Lactate, NGAL, sTM and sST2 levels at the time of admission to catheterization laboratory. These findings propose that non-OHCA and OHCA patients with CS could be considered as two individual clinical entities. Abstract Figure. Level of biomarkers OHCA vs. non-OHCA

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