Related Experiment Videos

Influence of left ventricular hypertrophy on microvascular dysfunction and left ventricular remodelling after acute

Leonarda Galiuto1, Francesca A Gabrielli, Gaetano A Lanza

  • 1Institute of Cardiology, Catholic University of the Sacred Heart, Largo A. Gemelli 8, 00168 Rome, Italy. lgaliuto@rm.unicatt.it

European Journal of Echocardiography : the Journal of the Working Group on Echocardiography of the European Society of Cardiology
|April 10, 2010
PubMed

Insights

Left ventricular hypertrophy did not affect left ventricular remodeling after ST-segment elevation myocardial infarction (STEMI). Both hypertrophic and non-hypertrophic hearts showed similar improvements in function and microvascular perfusion post-STEMI.

Area of Science:

  • Cardiology
  • Echocardiography
  • Myocardial Infarction

Background:

  • Left ventricular (LV) hypertrophy is a common finding in patients with ST-segment elevation myocardial infarction (STEMI).
  • The impact of LV hypertrophy on microvascular dysfunction and LV remodeling following STEMI remains incompletely understood.

Purpose of the Study:

  • To investigate whether pre-existing LV hypertrophy influences microvascular dysfunction and LV remodeling at 6 months post-STEMI.
  • To compare the recovery of regional contractile function and myocardial perfusion in STEMI patients with and without LV hypertrophy.

Main Methods:

  • Fifty-six STEMI patients underwent echocardiography and myocardial contrast echocardiography within 24 hours and at 6 months.
  • LV mass, volumes, ejection fraction, and wall motion score index were assessed.
  • Myocardial perfusion was evaluated using contrast score index (CSI) to assess microvascular function.

Main Results:

  • Patients with LV hypertrophy exhibited larger end-diastolic and end-systolic volumes at both time points compared to non-hypertrophic patients.
  • No significant changes in LV volumes were observed over time within either group.
  • Wall motion score index and CSI improved over time in both groups, with no significant differences between groups at baseline or follow-up.

Conclusions:

  • Left ventricular hypertrophy does not appear to influence the development of post-STEMI LV remodeling.
  • Both hypertrophic and non-hypertrophic left ventricles demonstrate comparable regional contractile function and microvascular perfusion recovery after STEMI.
Abstract

Related Concept Videos

Flail Chest-II01:26

Flail Chest-II

Managing flail chest, a condition characterized by a segment of the chest wall moving independently from the rest of the thoracic cage, requires a comprehensive approach. It includes a thorough assessment of the patient's condition, a diagnostic evaluation to determine the extent of the injury, and the implementation of appropriate medical interventions tailored to the individual's needs.
Assessment:
1. Clinical Evaluation:
History:
Spinal Cord Injury ll: Pathophysiology01:14

Spinal Cord Injury ll: Pathophysiology

Spinal cord injury progresses through two interconnected phases: primary injury and secondary injury.Primary InjuryPrimary injury happens at the moment of trauma and involves immediate mechanical damage to the spinal cord.Compression happens when broken vertebrae, herniated discs, or accumulating blood (such as a hematoma) press directly against the spinal cord, distorting its normal shape and function. In cases of contusion, the cord is bruised by a blunt force (like penetrating injuries or...
Secondary Spinal Cord Injury llI: Pathophysiology01:25

Secondary Spinal Cord Injury llI: Pathophysiology

Early Ischemia and Ionic ImbalanceWithin minutes of spinal cord injury, a secondary cascade begins, progressing over hours to weeks. Vascular damage reduces blood flow, causing ischemia and mitochondrial dysfunction. ATP depletion leads to ion pump failure, membrane depolarization, sodium influx, potassium efflux, and water accumulation, resulting in cellular swelling. Increased intracellular calcium further disrupts mitochondria and accelerates cellular injury.Excitotoxicity and Neuronal...