IDF sources said the MDA medics took a "great risk" by crossing over to the Palestinian side of Erez.
The woman, 31, was evacuated to the crossing by Palestinian medics who had failed to resuscitate her following the heart attack.
After coordinating with the Gaza Liaison Administration, the MDA medics crossed into Gaza, stabilized the woman and evacuated her into Israel where she was transferred to Ichilov Hospital in Tel Aviv.
On Thursday, for the first time since the beginning of the second intifada, an MDA ambulance entered Ramallah to evacuate a six-month-old Palestinian baby for medical treatment.
The baby, who was in critical condition, was thought to have been exposed to toxic chemicals.