Miyokard perfüzyon sintigrafisinde kan basıncı değerleri kardiyak iskemiyi öngördürebilir

Abstract

Low diastolic blood pressure (DBP) is associated with adverse cardiovascular outcomes in patients with chronic coronary disease (CAD), but its association with ischemia is unknown. Relationship between DBP and the myocardial ischemia in myocardial perfusion scintigraphy (MPS) was investigated. Methods: Patients with chronic coronary artery disease who underwent MPS were included. One day stress/rest gated MPI with Tc-99m MIBI protocol was applied to all patients. Blood pressures was measured before MPI. Patients were divided into 2 groups as ≤75 mmHg and >75 mmHg according to DBP. The SDS were calculated using the sum of the 17-segment. Results: The patients with DBP ≤75 mmHG and with DBP>75 mmHG were compared, there was no significant difference in SDS (4.44±4.67 and 4.65±4.70 respectively; p=0.657). Association of DBP ≤75 mmHg with SDS appeared to be primarily among those with SBP >130 mmHg. Patients with DBP ≤75mmHg and SBP >130mmHg had different SDS (6.87±6.00 and 4.99±4.77; p=0.015) between patients with DBP >75 mmHg and SBP >130mmHg. Conclusion: Coexistence lower diastolic blood pressures (≤75mmHg) with higher systolic blood pressures (>130mmHg) could be a predictor of myocardial ischemia in patients who underwent adenosine stress MPI.