[Behavior of systolic blood pressure during recovery phase after bicycle ergometric test. Its value in the diagnosis of ischemic heart disease]. / Comportamento della pressione arteriosa sistolica nella fase di recupero dopo sforzo al cicloergometro. Suo valore nella diagnosi di cardiopatia ischemica.

ABSTRACT

The diagnostic utility of an abnormal decrease in systolic blood pressure (PAS) after exercise, have been evaluated by an index obtained by the ratio between PAS at the maximal stage of exercise and PAS at the 1', 3' and 5' of recovery (PAS index). The 58 patients studied have been divided in two groups group A, 32 patients, aged 33-66 (means 51.5) with angina pectoris and significant coronary stenosis; group B, 26 subjects, aged 27-39 (mean 34.7), asymptomatic, without coronary stenosis (control group). PAS index at 1' of recovery have been 0.82 +/- 0.08 in the group B and 0.94 +/- 0.07 in the group A (p less than 0.0005); at the 3' of recovery 0.72 +/- 0.07 in the group B and 0.86 +/- 0.11 in CAD group (p less than 0.0005); at 5' of recovery 0.66 +/- 0.07 in the group B and 0.79 +/- 0.11 in the group A (p less than 0.0005). Diagnostic accuracy have been of 60%, 75% and 75% for PAS index respectively at first, third and fifth minute of recovery, while ST depression diagnostic accuracy have been of 88%.