Impact of Induced Cardiac Arrest on Cognitive Function after Implantation of a Cardioverter-Defibrillator

Autor: Christiano Matsui, Luiz Antonio Rivetti, Guilherme Cagno, Lígia Andrade da Silva Telles Mathias, Mauro Prado da Silva
Rok vydání: 2009
Předmět:
Adult
Male
medicine.medical_specialty
EQUIPAMENTOS: desfibriladores implantáveis
Prosthesis Implantation
Ventricular tachycardia
Cardioverter-Defibrillator
Defibrillation threshold
EQUIPMENT: implantable defibrillators
symbols.namesake
Young Adult
marca-passo
Internal medicine
medicine
Humans
Fisher's exact test
Aged
Aged
80 and over
Postoperative Care
Mini–Mental State Examination
medicine.diagnostic_test
business.industry
COMPLICATIONS: brain ischemia
neurologic manifestations
cognitive dysfunction
Standard treatment
Middle Aged
medicine.disease
SURGERY
Cardiac: induced cardiac arrest
pacemaker
Defibrillators
Implantable
Heart Arrest
Anesthesiology and Pain Medicine
COMPLICAÇÕES: isquemia encefálica
manifestações neurológicas
transtornos cognitivos
CIRURGIA
Cardíaca: parada cardíaca induzida
Ventricular fibrillation
Heart Function Tests
Cardiology
symbols
Female
business
Cognition Disorders
Mental Status Schedule
Zdroj: Brazilian Journal of Anesthesiology. 59(1):37-45
ISSN: 0034-7094
DOI: 10.1590/s0034-70942009000100006
Popis: Summary Background and objectives Implantable cardioverter-defibrillators (ICD) were introduced in clinical practice in 1980 and they are considered the standard treatment for individuals at risk for fatal ventricular arrhythmias. To ensure proper working conditions, the energy necessary to interrupt ventricular tachycardia or ventricular fibrillation should be determined during implantation by a test called defibrillation threshold. For this test, it is necessary to induce ventricular fibrillation, which should be identified and treated by the device. The objective of the present study was to determine the frequency of cognitive dysfunction 24 hours after the implantation of a cardioverter-defibrillator. Methods Thirty consecutive patients with indication of cardioverter-defibrillator (ICD) placement and 30 patients with indication of implantable pacemaker (PM) were enrolled in this study. Patients were evaluated at the following moments: 24 hours before placement of the ICD or PM with a pre-anesthetic evaluation form, Mini Mental State Examination (MMSE), and Confusion Assessment Method (CAM); during implantation of the ICD or PM, the following parameters were determined: number of cardiac arrests and total time of cardiac arrest. Twenty-four hours after placement of the device, the following parameters were evaluated: MMSE and CAM. Results Differences in the frequency of altered MMSE and CAM scores between both groups before and after implantation were not detected by the Fisher Exact test. The mean time of cardiac arrest was 7.06 seconds, with a maximal of 15.1 and minimal of 4.7 seconds. Conclusions Induction of cardiac arrest during defibrillation threshold testing did not cause cognitive dysfunction 24 hours after implantation of the cardioverter-defibrillator.
Databáze: OpenAIRE
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