Non-ST Elevation MI: How Long Do We Have for A Coronary Angiography?

This summary discusses the early invasive strategy and the risk of mortality in non-ST-elevation AMI.


Over the past 2 decades, mortality and complications rates have seen a significant reduction thanks to technological and pharmaceutical development, and the increasing experience of health teams. This is especially true when we look at the use of coronary angiography withing 72 hours of symptom onset; in these cases, mortality risk has gone from 3 to 6 months. 

IAM sin elevación del ST: ¿cuánto tiempo tenemos para realizar una coronariografía?

At present, the information is contradicting when it comes to an early invasive strategy. Even though some registries and randomized studies have not shown improvement, this might be the result of different factors, such as the time between symptom onset and the coronary angiography. 

The KAMIR-NIH with 5856 non-ST myocardial infarction patients (NSTEMI) was analyzed: 3919 of these patients had a symptom onset to catheter time (StC) of <48 hours (66.9%) and 1937 a >48-hr StC.

Primary end point was all cause mortality at 3 years and secondary end point was the composite of all cause death, repeat MI or rehospitalization for cardiac failure at 3 years. 

Mean age was 64 and over 70% were men. 

Read also: Is Rehospitalization a Relevant Factor after Aortic Valve Replacement?

Patients presenting <48 hr. StC more often presented hypertension, diabetes, kidney function deterioration, MI, typical angina, angina after the first episode, less cardiac failure, lower GRACE score and better left ventricular function. 

StC was 17.5 hrs. vs 90.8 hrs.

The presence of left main severe stenosis was 5.6%, 3 vessel disease 19%, 2 vessel lesion 28% and one vessel lesion 45%. PCI was done in 85% of cases, CABG in 1.5% and the rest received optimal medical treatment.   

Primary end point at 3 years was 7.3% vs. 13.4% (3-year adjusted HR: 0.76; 95% CI:0.64-0.91; P = 0.002) for <48 hr. StC patient vs >48 hr StC patients respectively. Secondary end point was also in favor of <48 hr StC (12.2% vs. 19.6% 3-year adjusted HR: 0.84; 95% CI: 0.73-0.96; P=0.015).

Read also: Is it Possible to Reduce DAPT Time in Diabetic Patients?

The use of emergency systems was associated to <48 hr StC and lower mortality.

Conclusion

An early invasive strategy based on symptom to catheter time was associated to lower all-cause mortality risk in NSTEMI patients. Seeing as this is a prospective registry, this conclusion should be considered as hypothesis generator to encourage future research. 

Dr. Carlos Fava - Consejo Editorial SOLACI

Dr. Carlos Fava.
Member of the Editorial Board of SOLACI.org.

Original Title: Early Invasive Strategy Based on the Time of Symptom Onset of Non-ST-Segment Elevation Myocardial Infarction.

Reference: SungA Bae, et al. J Am Coll Cardiol Intv 2023;16:64–75.


Subscribe to our weekly newsletter

Get the latest scientific articles on interventional cardiology

More articles by this author

Andromeda Trial: Meta-Analysis of Drug Coated Balloon vs. DES in Small Vessel DeNovo Lesions

The use of coronary stents vs plain old balloon angioplasty (POBA), has allowed to reduce recoil and limiting flow dissection which were major limitation...

QFR vs. FFR: Is Coronary Revascularization Deferral Safe? Results from a FAVOR III Sub-Analysis

In cases of intermediate coronary lesions, functional assessment is recommended to aid the decision-making process regarding revascularization. There are several tools currently used to...

FRANCE TAVI Registry: Coronary Adverse Events After TAVI

Between 30% and 70% of patients undergoing transcatheter aortic valve implantation (TAVI) have coronary artery disease (CAD). However, the prognostic impact of CAD in...

Unplanned Coronary Angiography After TAVR: Incidence, Predictors, and Outcomes

The importance of assessing coronary artery disease in patients undergoing transcatheter aortic valve replacement (TAVR) is well recognized due to the high prevalence of...

LEAVE A REPLY

Please enter your comment!
Please enter your name here

Related Articles

SOLACI Sessionsspot_img

Recent Articles

Left Bundle Branch Block after TAVR: What Is Its Impact?

Courtesy of Dr. Juan Manuel Pérez. Left bundle branch block (LBBB) is a common complication following transcatheter aortic valve replacement (TAVR), which can be either...

Andromeda Trial: Meta-Analysis of Drug Coated Balloon vs. DES in Small Vessel DeNovo Lesions

The use of coronary stents vs plain old balloon angioplasty (POBA), has allowed to reduce recoil and limiting flow dissection which were major limitation...

Multicenter Experience with 3D Intracardiac Echocardiography for Guiding Interventional Cardiac Procedures

Courtesy of Dr. Juan Manuel Pérez. Imaging techniques play a fundamental role in interventional cardiac procedures. Intracardiac echocardiography (ICE) appears as an alternative to transesophageal...