United Kingdom, April 30 -- Patrick Muldoon's cause of death has been revealed.

The Days of Our Lives star died of myocardial infarction - a heart attack - on April 19, aged 57, according to his death certificate.

Underlying causes were pulmonary embolism and hereditary coagulopathy.

A pulmonary embolism is "when a blood clot blocks a blood vessel in your lungs", according to the National Health Service (NHS).

Coagulopathy, meanwhile, "happens when there's a problem with how your blood forms clots", Cleveland Clinic states.

The death certificate also revealed Patrick - who was listed as an actor and producer - was cremated on April 28.

He is survived by partner, Miriam Rothbart, parents, Deanna and Patrick Muldoon Sr.; his sister an...