It may not always be necessary to subject heart transplant patients to one biopsy after another. 

Researchers hope these policies can be standardized in the future to help avoid confusion and improve clinician safety.

The family of Gay Sherman Weintz, 55, said she died as a result of 24-hour physical restraint, combined with staff at Middlesex Hospital ignoring signs of a medical crisis. Her son, Chauncey Smith, has filed a wrongful death lawsuit. 

Mahmood Sami Khan, 36, has been charged on five counts of wire fraud and money laundering in connection with the conspiracy. If convicted, he could spend the rest of his life behind bars. 

While Kardium raised $250 million in an oversubscribed funding round, Field Medical raised $35 million. Both companies are focused on designing and developing new pulsed field ablation technologies to help treat challenging arrhythmias.