Video Experimental Relacionado
Updated: Aug 12, 2026
07:29
Programmed Electrical Stimulation in Mice
Published on: May 26, 2010
El potencial proarrítmico de los desfibriladores de cardioversión implantables
1Department of Cardiology, Cleveland Clinic Foundation, OH, USA.
Circulation
|September 15, 1995
Resumen
Los desfibriladores cardioverter implantables (ICD) previenen la muerte súbita cardíaca, pero pueden causar arritmias. La optimización de la programación del ICD es clave para minimizar este riesgo de proarritmia.
Área de la Ciencia:
- Cardiología Cardiología.
- Ingeniería Biomédica Ingeniería Biomédica.
Sus antecedentes:
- Los desfibriladores cardioverter implantables (ICD) son cruciales para prevenir la muerte súbita cardíaca en personas de alto riesgo.
- Sin embargo, los ICD conllevan el riesgo de provocar o exacerbar arritmias cardíacas, conocidas como proarritmias.
Objetivo del estudio:
- Para explorar los mecanismos de la proarritmia inducida por la CDI.
- Identificar estrategias para mitigar el potencial proarrítmico de la terapia ICD.
Principales métodos:
- Análisis de los datos clínicos y parámetros específicos del dispositivo relacionados con las terapias ICD.
- Revisión de la literatura sobre la programación de ICD y la inducción de arritmias.
Principales resultados:
- La proarritmia puede ser el resultado de las terapias antitachicardia o antibradicardia administradas por los ICD.
- La programación subóptima del dispositivo es un contribuyente significativo a la proarritmia, junto con las limitaciones técnicas.
Conclusiones:
- Los efectos proarrítmicos de las ICD, aunque rara vez son fatales, aumentan la morbilidad del paciente.
- La adaptación de la "prescripción eléctrica" del ICD a las características individuales del paciente y de la arritmia puede minimizar la proarritmia.
Más Videos Relacionados
16:40A New Single Chamber Implantable Defibrillator with Atrial Sensing: A Practical Demonstration of Sensing and Ease of Implantation
Published on: February 28, 2012
08:43Advanced Cardiac Rhythm Management by Applying Optogenetic Multi-Site Photostimulation in Murine Hearts
Published on: August 26, 2021
Videos de Conceptos Relacionados
01:28Mechanism of Cardiac Arrhythmias
Arrhythmias are irregular heart rhythms occurring when the heart's electrical impulses become abnormal. These disturbances can lead to various symptoms, depending on their severity and the underlying cause. Some common factors contributing to arrhythmias include hypoxia, ischemia, electrolyte imbalances, excessive catecholamine exposure, drug toxicity, and muscle overstretching. Arrhythmias can be classified into two main types based on the rate and site of origin of abnormal heart rhythms.
01:29Disturbances in Heart Rhythm
Arrhythmia or dysrhythmia refers to an abnormal heart rhythm caused by a defect in the heart's conduction system. It can cause the heart to beat irregularly, too quickly, or too slowly, leading to symptoms like chest pain, shortness of breath, and fainting. Factors such as stress, caffeine, alcohol, nicotine, cocaine, certain drugs, congenital defects, diseases, and electrolyte abnormalities can trigger arrhythmias.
Arrhythmias are categorized by their speed, rhythm, and origin. A slow heart...
Arrhythmias are categorized by their speed, rhythm, and origin. A slow heart...
01:30Cardiac Action Potential
Cardiac action potentials are essential for proper heart function, enabling the rhythmic contractions needed for adequate blood circulation. Nodal cells and Purkinje fibers, specialized for electrical conduction, generate these action potentials.
The cardiac action potential process involves a series of phases characterized by the movement of ions across the cardiac cell membranes, leading to the depolarization and repolarization of the cardiac myocytes.
Ionic Basis of Cardiac Action Potentials
The cardiac action potential process involves a series of phases characterized by the movement of ions across the cardiac cell membranes, leading to the depolarization and repolarization of the cardiac myocytes.
Ionic Basis of Cardiac Action Potentials
01:18Dysrhythmias IV: Characteristics of Bradyarrhythmias
Bradyarrhythmias are cardiac rhythm disorders characterized by a slower-than-normal heart rate, typically defined as fewer than 60 beats per minute. Some of which are discussed here:Sinus BradycardiaSinus bradycardia presents a heart rate lower than 60 beats per minute, with a regular rhythm originating from the SA node. The ECG typically shows normal P waves preceding each QRS complex, a normal PR interval (0.12 to 0.20 seconds), and a normal QRS duration (0.06 to 0.10 seconds).First-Degree AV...
01:25Dysrhythmias VI: Management of Dysrhythmias
Dysrhythmia management involves a multifaceted approach, incorporating pharmacological treatments, medical procedures, surgical interventions, lifestyle modifications, and patient education.Pharmacological ManagementAntiarrhythmic Drugs:Class I (Sodium Channel Blockers): This class includes quinidine and procainamide, which reduce the speed of impulse conduction in the heart, stabilize the cardiac membrane, and control arrhythmias. Quinidine and procainamide are Class IA agents that prolong the...
01:25ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias
Arrhythmia is a condition characterized by an irregular heart rhythm, with ECG changes that differ based on its origin and nature. The types of arrhythmias discussed below include atrial, junctional, and ventricular arrhythmias.Atrial ArrhythmiasPremature Atrial Complexes (PACs): PACs are early atrial beats caused by stress, caffeine, alcohol, electrolyte imbalances, hypoxia, hyperthyroidism, or certain medications (e.g., bronchodilators and decongestants). The ECG shows early P waves with an...