English to Portuguese Medical Medical: Health Care Anesthesia

What is the best translation for the word 'business'?

As in:
Anesthesia business practices also have to be revised to address the changing needs of patients, other providers, and health care systems to maintain a meaningful role in health care delivery.
Anesthesia practices have adopted a variety of business models to address the needs of the local environment, the relationship between the anesthesiologists and the community, and the roles played by anesthesiologists in perioperative management.