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. 2021 Feb 8;5(2):320-329.
doi: 10.1016/j.mayocpiqo.2020.12.006. eCollection 2021 Apr.

Use of Post-Acute Care Services and Readmissions After Acute Myocardial Infarction Complicated by Cardiac Arrest and Cardiogenic Shock

Saraschandra Vallabhajosyula  1   2   3 , Stephanie R Payne  4 , Jacob C Jentzer  1   2 , Lindsey R Sangaralingham  4 , Kianoush Kashani  2   5 , Nilay D Shah  6   4   7 , Abhiram Prasad  1 , Shannon M Dunlay  1   6
Affiliations

Use of Post-Acute Care Services and Readmissions After Acute Myocardial Infarction Complicated by Cardiac Arrest and Cardiogenic Shock

Saraschandra Vallabhajosyula et al. Mayo Clin Proc Innov Qual Outcomes. .

Abstract

Objective: To evaluate post-acute care utilization and readmissions after cardiac arrest (CA) and cardiogenic shock (CS) complicating acute myocardial infarction (AMI).

Methods: With use of an administrative claims database, AMI patients from January 1, 2010, to May 31, 2018, were stratified into CA+CS, CA only, CS only, and AMI alone. Outcomes included 90-day post-acute care (inpatient rehabilitation or skilled nursing facility) utilization and 1-year emergency department visits and readmissions.

Results: Of 163,071 AMI patients, CA+CS, CA only, and CS only were noted in 3965 (2.4%), 8221 (5.0%), and 6559 (4.0%), respectively. In-hospital mortality was noted in 10,686 (6.6%) patients: CA+CS, 1935 (48.8%); CA only, 2948 (35.9%); CS only, 1578 (24.1%); and AMI alone, 4225 (2.9%) (P<.001). Among survivors, post-acute care services were used in 67,799 (44.5%), with higher use in the CS+CA cohort (1310 [64.6%]; hazard ratio [HR], 1.19; 95% CI, 1.06 to 1.33; P=.003) and CA cohort (2738 [51.9%]; HR, 1.27; 95% CI, 1.20 to 1.35; P<.001) but not in the CS cohort (3048 [61.2%]; HR, 1.03; 95% CI, 0.97 to 1.11; P=.35) compared with the AMI cohort (60,703 [43.3%]). Compared with the AMI cohort (48,990 [35.0%]), patients with CS only (2,085 [41.9%]; HR, 1.16; 95% CI, 1.10 to 1.22; P<.001) but not those with CA+CS (724 [35.7%]; HR, 1.07; 95% CI, 0.98 to 1.17; P=.14) had higher rates of readmissions (P=.03). Readmissions were lower in those with CA (1,590 [30.2%]; HR, 0.94; 95% CI, 0.89 to 0.99). Repeated AMI, coronary artery disease, and heart failure were the most common readmission reasons. There were no differences for emergency department visits.

Conclusion: CA is associated with increased post-acute care use, whereas CS is associated with increased readmission risk in AMI survivors.

Keywords: AMI, acute myocardial infarction; CA, cardiac arrest; CS, cardiogenic shock; ED, emergency department; HR, hazard ratio; ICD-10-CM, International Classification of Diseases, Tenth Revision, Clinical Modification; ICD-9-CM, International Classification of Diseases, Ninth Revision, Clinical Modification; MCS, mechanical circulatory support; PCI, percutaneous coronary intervention; SNF, skilled nursing facility.

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Figures

Figure 1
Figure 1
Top 5 reasons for emergency department visits and hospital readmissions. A, Emergency department visits. B, Hospital readmissions.
Figure 2
Figure 2
Kaplan-Meier time-to-event curves for emergency department visits in acute myocardial infarction (AMI) survivors with and without cardiac arrest (CA) and cardiogenic shock (CS).
Figure 3
Figure 3
Kaplan-Meier time-to-event curves for hospital readmissions in acute myocardial infarction (AMI) survivors with and without cardiac arrest (CA) and cardiogenic shock (CS).
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