Related Experiment Video
Updated: Feb 13, 2026
Myocardial Infarction and Functional Outcome Assessment in Pigs
Published on: April 25, 2014
Serial assessment of endothelial function 1, 6, and 12 months after ST-elevation myocardial infarction
Jasveen J Kandhai-Ragunath1, Carine J M Doggen2, Liefke C van der Heijden1
1Department of Cardiology, Thoraxcentrum Twente, MST, Koningsplein 1, 7512KZ, Enschede, The Netherlands.
Insights
Endothelial function significantly worsened 12 months after ST-elevation myocardial infarction (STEMI) treatment with primary percutaneous coronary intervention (PPCI). This decline in vascular health occurred despite adequate medical care and was not explained by changes in traditional cardiovascular risk factors.
Area of Science:
- Cardiovascular Medicine
- Vascular Biology
- Interventional Cardiology
Background:
- Endothelial dysfunction is a key factor in cardiovascular disease progression.
- Serial data on endothelial function changes post-ST-elevation myocardial infarction (STEMI) are limited.
- Understanding endothelial recovery after primary percutaneous coronary intervention (PPCI) is crucial for patient outcomes.
Purpose of the Study:
- To noninvasively assess changes in endothelial function up to 12 months after PPCI in STEMI patients.
- To determine if endothelial function improves or deteriorates following STEMI treatment.
- To investigate potential factors influencing endothelial function changes post-STEMI.
Main Methods:
- Prospective observational cohort substudy within the RESPONSE randomized trial.
- Noninvasive assessment of endothelial function using reactive hyperemia peripheral artery tonometry (RH-PAT) at 1, 6, and 12 months post-PPCI.
- Analysis of cardiovascular risk factors including cholesterol, HbA1C, and diastolic blood pressure.
Main Results:
- Endothelial function, measured by the RH-PAT index, significantly deteriorated over 12 months (Baseline: 1.90 ± 0.58; 6 months: 1.81 ± 0.57; 12 months: 1.69 ± 0.49; p=0.04).
- Despite adequate treatment, patients showed increases in total cholesterol, LDL cholesterol, HbA1C, and diastolic blood pressure.
- Multivariate analysis did not link the observed deterioration in endothelial function to changes in traditional cardiovascular risk factors.
Conclusions:
- Endothelial function significantly deteriorates in the 12 months following primary percutaneous coronary intervention for ST-elevation myocardial infarction.
- This deterioration is not explained by changes in the traditional cardiovascular risk profile.
- Further research is needed to identify the mechanisms behind this post-STEMI endothelial dysfunction.
Abstract:
Knowledge about the changes in endothelial function after ST-elevation myocardial infarction (STEMI) is of substantial interest, but serial data are scarce. The aim of the present study was to noninvasively evaluate whether endothelial function, as assessed shortly after primary percutaneous coronary intervention (PPCI) for STEMI, may improve until 12-month follow-up. This prospective observational cohort study was performed in patients in the RESPONSE randomized trial who participated in a substudy and underwent noninvasive assessment of endothelial function at 1 (baseline), 6, and 12-month follow-up after treatment of a STEMI by PPCI. The reactive hyperemia peripheral artery tonometry (RH-PAT) method was used to assess endothelial function (higher RH-PAT index signifies better function). Of the 70 study participants, who were 57.4 ± 9.7 years of age, 55 (78.6%) were male and 9 (13%) had diabetes. The endothelial function deteriorated significantly during follow-up: the RH-PAT index at baseline, 6, and 12-month follow-up was 1.90 ± 0.58, 1.81 ± 0.57, and 1.69 ± 0.49, respectively (p = 0.04). Although patients were carefully treated in outpatient clinics and adequate pharmacological therapy was prescribed, we noted an increase in total cholesterol (p = 0.001), LDL cholesterol (p = 0.002), HbA1C (p = 0.054), and diastolic blood pressure (p = 0.047) However, multivariate analysis revealed that this increase in cardiovascular risk factors could not explain the observed deterioration in endothelial function. In patients with STEMI, we observed a significant deterioration in endothelial function during 12 months after PPCI that could not be explained by changes in the traditional cardiovascular risk profile.
Related Concept Videos
03:12Freezing Point Depression and Boiling Point Elevation
The boiling point of a liquid is the temperature at which its vapor pressure is equal to ambient atmospheric pressure. Since the vapor pressure of a solution is lowered due to the presence of nonvolatile solutes, it stands to reason that the solution’s boiling point will subsequently be increased. Vapor pressure increases with temperature, and so a solution will require a higher temperature than will pure solvent to achieve any given vapor pressure, including one...
01:03Serial Position Effect
01:20Elevation of Intermediate Points on Vertical Curves
01:22Effect of Hepatic Disease on Pharmacokinetics: Pathophysiologic Assessment and Liver Function Test
02:15SN1 Reaction: Stereochemistry
In the first step of an SN1 reaction, the bond between the electrophilic carbon and the leaving group ionizes to generate the carbocation intermediate. The second step of the mechanism is the nucleophilic attack.
In the formed carbocation, the positively charged carbon is sp2 hybridized with a trigonal planar geometry. As all the three substituents lie on the same plane, a plane of symmetry for the...
02:05SN1 Reaction: Kinetics
However, Sir Christopher Ingold and Edward D. Hughes, who studied the kinetics of various nucleophilic substitution reactions, noticed that a tertiary alkyl halide does undergo a nucleophilic substitution reaction in the presence of a weak nucleophile. While studying the substitution...