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New cardiac defibrillator much safer for patients

It seems that Dr. Jeff Healey implanted a defibrillator in a patient at the Electrophysiology Laboratory. Credit: Owen Thomas, Hamilton Health Sciences.

High-risk patients who need defibrillators to prevent heart attack may have less complications with the type of device implanted under the skin, a Canadian study has found.

Traditional instruments, while highly effective, include the insertion of a wire through the nerve, into the chest and into the heart itself. The most commonly known ‘leads,’ in the traditional defibrillator – called the moving ICD (TV-ICD) – can cause complications including perforations in the heart muscle or lungs and bleeding. in the veins.

A new study, conducted by researchers at the National Institutes of Health (PHRI), suggests a new type of heart attack. defibrillator called subcutaneous ICD (S-ICD) reduces patient stress by more than 90 percent, compared with TV-ICD.

S-ICD, which is implanted under the skin near the patient’s pelvis, does not include any area of ​​lead in the heart or blood vessels. Alternatively, S-ICD has lead that travels under the skin, along with the breast tissue.

“S-ICD reduces lead-related complications without compromising ICD function,” said Jeff Healey, senior scientist at PHRI, McMaster University and Hamilton Health Sciences (HHS) research center.

Healey, a professor of cardiology at McMaster, and an electrophysiologist at HHS said: “S-ICD is now an exciting alternative to TV-ICD, especially in patients at high risk for comorbidities. the lead. “

Healey presented the results of the study at Heart Rhythm 2022 in San Francisco.

The study included 544 eligible patients (one in four women) with an average age of 49, at 14 clinics in Canada.

They are electronically scanned; 251 patients were assigned to S-ICD and 252 patients to TV-ICD. They were followed for 2.5 years to this position; The investigation is ongoing.

Younger patients are usually not represented in ICD tests, ”Healey said. related to lead. “

He added: “Canada has a strong ICD history clinical trials and the registration of patients with congenital heart disease. ”


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hint: New cardiac defibrillator safer for patients (2022, April 30) Retrieved 30 April 2022 from https://medicalxpress.com/news/2022-04-cardiac-defibrillator-safer-patients.html

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