[Intracranial hemorrhage following thrombolytic therapy in acute myocardial infarct]

G Torres Martínez1, P Rodríguez García, A Cantón Martínez

  • 1Unidad Coronaria, Hospital Universitario Virgen de la Arrixaca, Murcia.

Insights

Intracranial hemorrhage occurred in 1.6% of patients receiving thrombolytic therapy for acute myocardial infarction. Cerebral-vascular disease and hypertension were key risk factors, with APSAC showing a higher hemorrhage rate.

Area of Science:

  • Cardiology
  • Neurology

Context:

  • Thrombolytic therapy is crucial for acute myocardial infarction (AMI).
  • Intracranial hemorrhage (ICH) is a serious complication of thrombolytic therapy, with reported incidences ranging from 0.3% to 3%.
  • Understanding ICH incidence and predictive factors in AMI patients is vital for optimizing treatment protocols.

Purpose:

  • To determine the incidence of ICH in AMI patients treated with thrombolytic agents.
  • To analyze the characteristics of ICH in this patient cohort.
  • To identify predictive factors for ICH development during thrombolytic therapy.

Summary:

  • A retrospective review of 997 AMI patients treated with thrombolytics revealed an overall ICH incidence of 1.6%.
  • The APSAC group exhibited a higher hemorrhage rate (4%) compared to streptokinase (0.8%) and rTPA (1.2%).
  • Cerebral-vascular disease and hypertension were identified as significant risk factors for ICH.

Impact:

  • This study highlights a higher ICH incidence in the studied population compared to multicenter trials.
  • Findings emphasize the need to consider patient-specific risk factors, such as pre-existing cerebral-vascular disease and hypertension, when administering thrombolytic therapy.
  • The high mortality rate (68.7%) associated with ICH underscores the severity of this complication.
Abstract

Related Concept Videos

Ischemic Stroke l: Introduction01:15

Ischemic Stroke l: Introduction

Ischemic stroke is an acute cerebrovascular condition in which blood flow to a brain region is suddenly interrupted, leading to tissue infarction. Neurons depend on continuous oxygen and glucose supply, so even brief reductions in perfusion cause energy failure, ionic imbalance, and irreversible injury. Ischemic strokes are classified into thrombotic and embolic types based on their underlying mechanisms.Thrombotic MechanismsThrombotic stroke develops when a clot forms within a cerebral artery.
Ischemic Stroke ll: Pathophysiology01:15

Ischemic Stroke ll: Pathophysiology

An ischemic stroke occurs when a cerebral blood vessel becomes obstructed, most often by a thrombus or embolus, interrupting the delivery of oxygen and glucose to brain tissue. Because neurons rely on continuous aerobic metabolism, energy failure begins within minutes of reduced perfusion. The region receiving the least blood flow becomes the infarct core, an area of irreversible cellular death. Surrounding this core lies the penumbra, a zone of hypoperfused but still viable tissue that is...
Hemorrhagic Stroke l: Introduction01:17

Hemorrhagic Stroke l: Introduction

A hemorrhagic stroke is an acute neurological event that occurs when a weakened cerebral blood vessel ruptures, allowing blood to accumulate within or around the brain. The sudden release of blood forms a focal hematoma that increases intracranial pressure, displaces neural tissue, and can obstruct cerebrospinal fluid pathways. These effects may be compounded by intraventricular extension of the hemorrhage, cerebral edema, or compression of adjacent structures, all of which contribute to...
Hemorrhagic Stroke ll: Pathophysiology01:29

Hemorrhagic Stroke ll: Pathophysiology

A hemorrhagic stroke develops when a cerebral blood vessel ruptures, allowing blood to escape into the surrounding brain tissue, as in intracerebral hemorrhage (ICH), or into the subarachnoid space, as in subarachnoid hemorrhage (SAH). Because the skull is a rigid compartment, the sudden presence of extravascular blood rapidly increases intracranial pressure and compresses adjacent neural structures, leading to immediate tissue injury and impaired cerebral perfusion.Mass Effect and Primary...
Transient Ischemic Attack l: Introduction01:26

Transient Ischemic Attack l: Introduction

A transient ischemic attack (TIA) is a brief episode of neurological dysfunction caused by a temporary, focal reduction in cerebral blood flow. Although symptoms resemble those of an ischemic stroke, the interruption in perfusion is short-lived and does not cause permanent infarction. TIAs are clinically important because they often serve as early warning events for future stroke.Mechanisms of Transient Cerebral IschemiaTransient cerebral ischemia may arise through several mechanisms. One...