Emergency Response:

41.500

1. Except as otherwise provided in NRS 41.505, any person in this state who renders emergency care or assistance in an emergency, gratuitously and in good faith, is not liable for any civil damages as a result of any act or omission, not amounting to gross negligence, by him in rendering the emergency care or assistance or as a result of any act or failure to act, not amounting to gross negligence, to provide or arrange for further medical treatment for the injured person.

Automatic External Defibrillator:

NRS 41.500 General rule; volunteers; members of search and rescue organization; persons rendering cardiopulmonary resuscitation or using defibrillator; presumptions relating to emergency care rendered on public school grounds or in connection with public school activities; business or organization that has defibrillator for use on premises.

1. Except as otherwise provided in NRS 41.505, any person in this State who renders emergency care or assistance in an emergency, gratuitously and in good faith, except for a person who is performing community service as a result of disciplinary action pursuant to any provision in title 54 of NRS, is not liable for any civil damages as a result of any act or omission, not amounting to gross negligence, by that person in rendering the emergency care or assistance or as a result of any act or failure to act, not amounting to gross negligence, to provide or arrange for further medical treatment for the injured person.

https://www.leg.state.nv.us/NRS/NRS-041.html#NRS041Sec500