[Decreased thresholds of pain sensation and defense flexor reflex in patients with ischemic heart disease]. / Snizhenie porokov bolevogo oshchushcheniia i zashchitnogo sgibate'l- nogo refleksa u bo'lnykh ishemicheskoi bolez'niu serdtsa.

It was demonstrated that patients with coronary heart disease with coronary angiographically documented stenosing coronary atherosclerosis and frequent episodes of angina pectoris had significantly higher pain threshold in response to electric skin irritation and greater defense unconditioned flexor reflex R-III threshold than healthy subjects and patients with chest pain of extracoronary genesis.

[Increasing the threshold of skin sensitivity to pain in patients with a predominantly painless form of ischemic heart disease]. / Povyshenie poroga kozhnoi bolevoi chuvstvite'lnosti u bo'lnykh s preimushchestvenno bezbolevoi formoi ishemicheskoi bolezni serdtsa.

Skin sensitivity to pain caused by electric stimulation was examined in 30 coronary patients with angina of effort (functional classes III-IV); pain thresholds for the right foot and right forearm were determined, as was the threshold for pain-associated flexion reflex R-III. The patients were divided into two groups on the basis of Holter's ECG monitoring: patients whose ST depressions were painless in more than half instances (Group 1), and those in whom all ischemic ST depressions were accompanied by anginal attacks (Group 2). Painless ST depressions were shown to have smaller depth and duration as compared to painful ST depressions in the same patients. Patients with predominantly painless episodes of myocardial ischemia had increased thresholds of skin sensitivity to pain and the R-III reflex.