An interesting medical event

From Nebraska's Omaha World-Herald:

Pothole jolts man's heart rate back to normal on way to Omaha hospital. Here's how that's possible
Most drivers get a sinking feeling when their cars clunk into crater-like potholes.

But one pothole did a passenger a favor when the ambulance he was in struck it, according to first responders.

Members of the Gretna Volunteer Fire Department on Monday were taking a 59-year-old man suffering chest pain to the hospital, a Sarpy County 911 dispatcher said.

The patient also had an abnormally high heart rate. While en route to Lakeside Hospital, the ambulance hit a pothole. The jolt returned the patient’s heart rate to normal, said Gretna Fire Chief Rod Buethe.

Entirely plausible - an electrical shock is the preferred way to defibrilate a heartbeat but a mechanical shock will work almost as well.