Those prolonged periods of stillness could be particularly useful in supporting radiotherapy, the authors said, an emerging technique that offers an alternative to radiofrequency or freezing for cardiac ablation. When a patient with an arrhythmia undergoes ablation, targeted radiotherapy is delivered from outside the chest to destroy tissue that might be causing that patient’s abnormalities. Breathing during the process is an issue because, with each breath, the patient’s heart moves within their chest.
“Stopping breathing with a safe breath-hold of over five minutes, using mechanically induced hypocapnia and now with oxygen-enriched air, could allow surgeons to target the radiotherapy for cardiac ablation much more precisely,” Parkes, of the University of Birmingham in the U.K., said in a release. “The advantage of radiotherapy over radiofrequency or freezing is that radiotherapy is completely noninvasive and is applied from outside the chest.”
Radiofrequency and freezing require a catheter, he said, which is passed through a vein in the groin or an artery in the neck to reach the atria. Right now, radiotherapy is only considered when all other ablation techniques have failed.
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January 21, 2020 at 12:58AM
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Mechanical hyperventilation could streamline cardiac ablation - Cardiovascular Business
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