from a Grand Teton National Park news release
MOOSE, WY- Grand Teton National Park rangers and staff responded to a medical emergency at the Jenny Lake boat ramp today at approximately 1 p.m. A 29-year old female from West Fargo, North Dakota, was in the area with her husband and three children when she went into cardiac arrest.
A bystander, a nurse, immediately began cardiopulmonary resuscitation (CPR). Several calls were made to 911 and park dispatch requesting medical help. A park ranger responded to the scene within four minutes of the call and took over chest compressions followed closely by park emergency medical service personnel who used a defibrillator and advanced life support interventions. Additional park rangers and staff responded to the area to help manage the scene.
The woman regained a heartbeat and breathing. A park ambulance transported her to Lupine Meadows where Air Idaho Rescue Helicopter was waiting to transport her to Eastern Idaho Regional Medical Center in Idaho Falls, Idaho.
Her current condition is unknown.