When Ted Bundy and Ann Rule are eating in a Seattle restaurant in what is supposed to be the mid-1970s, the reflection of a Hyundai dealership sign can be seen in the window. Hyundai did not market in the U.S. until 1986.
In order to feel the radial pulse of an adult human being, the mmHg systolic (upper number in BP) must be above 90. The woman who attempted suicide had a mmHg systolic of 80, yet the paramedic found a pulse.
Near the start of the Movie during the attempted suicide, the paramedics appear at the scene seconds after the call is made and immediately report blood pressure which takes a little preparation and time to perform.