Toxic reaction to local anaesthesia in dentistry

On Monday morning, a 65 years old patient arrives to the dentist with a pain in the lower jaw with a left temporal propagation and headache. There is a history of chronic heart disease with acute myocardial infarction 4 months ago, chronic atrial fibrillation with warfarin treatment and history of infectious endocarditis in the past. Furthermore, the patient suffers from hyperlipaemia and type II Diabetes, currently taking oral antidiabetics. Since Friday he has been felling a slight pain, which is escalating now. The analgesics are not effective.