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What record title she’ll attempt: Fastest marathon with a Subcontaneous Defibrillator (S-ICD) Female 

The TCS London Marathon 2025 will be a new challenge for Rebecca, a 32-year-old marketing manager.

This will be her ninth marathon but her first ever with the defibrillator.

Rebecca underwent heart surgery in 2023 following an idiopathic ventricular tachycardia (VT) episode that suddenly changed her life while she was in the middle of running in a championship. 

She went through VT ablation surgery, a procedure that creates scars in the heart tissue via heat or cold energy to block abnormal electrical signals and prevent an irregular heart pattern.