Myocardial ischemia and tooth extractions: comparison of old myocardial infarction, angina pectoris, and non-specific ischemic heart disease.

The non-specific IHD group showed the highest RPP values, while the angina pectoris group showed the lowest. The result coincided with electrocardiographic findings--non-specific IHD revealed 70% of ECG change, while in angina pectoris, the incidence was 33%. The myocardial infarction group showed intermediate values in both RPP and ECG change. The RPP ratio (RPP at each treatment period/value at pretreatment) was the highest at the anesthetic period for all kinds of IHD. No further severe findings were observed in the myocardial infarction groups, nor in the angina pectoris group, when comparing the clinical parameters, such as anesthetic solution, diazepam, time required for treatment, blood pressure, heart rate, and electrocardiographic observations with those of the non-specific IHD group.