Intramyocardial hemorrhage after AMI is associated with adverse worse outcomes, yet its. detection remains a clinical challenge.
A study published in Journal of Cardiothoracic Surgery evaluated the diagnostic performance of magnetic resonance imaging (MRI) in this setting. for detecting intramyocardial hemorrhage (IMH) in patients with acute myocardial infarction (AMI).
The study analyzed 116 patients with AMI who underwent direct percutaneous coronary intervention (PCI) between January 2018 and January 2021. . Patients were divided into an IMH group (n = 46) and a non-IMH group (n = 70) based on MRI findings.
Cardiac MRI revealed significant differences between the groups. The IMH group showed higher infarction size/left ventricular (IS/LV) volume percentage, more frequent microvascular obstruction (MVO), and higher MVO/LV volume percentage (all P < 0.05). Global circumferential, radial, and longitudinal strain values were significantly reduced in the IMH group.
Echocardiography performed after PCI demonstrated a lower left ventricular ejection fraction (LVEF) and higher left ventricular end-diastolic dimension (LVEDd) in the IMH patients compared with those without IMH (all P < 0.05).
Receiver operating characteristic (ROC) analysis showed MRI had an area under the ROC curve (AUC) of 0.869, with sensitivity of 87.00% sensitivity and specificity of 85.00%. These findings suggest MRI offers strong diagnostic accuracy for IMH detection in AMI patients following PCI, supporting its role in clinical evaluation and risk stratification.
