The answer is the nurse stands in arrears the woman and accomplishes chest thrusts. A first aid process used to give choking in a pregnant or obese patient in which the chest of the patient is tense by the thumb of the performer knuckle with their hand balled keen on a fist to expel air thus removing the barrier in the windpipe.
Considering that doing abdominal thrusts to a pregnant woman can hurt the baby, the nurse can adjust by aligning the clenched fist hold higher on the middle part of the breastbone, the sternum, instead. The pressure of thrusts on the center of the chest bone will ensure the blockage causing the choking will also be ejected just as it does with the Heimlich maneuver.
