There is No Correlation Between Non Invasive Diastolic Blood Pressure and Invasive Diastolic Blood Pressure

Introductıon: There are several indirect and non-invasive techniques measuring blood pressure. The most popular non-invasive technique for routine examinations and monitoring is auscultation of Korotkoff sounds. We compared non-invasive and invasive systolic and diastolic blood pressure measurements in this study. Methods: 46 adult patients to be operated on for any reason in Bulent Ecevit University Hospital were included in the study. The study patients’ age, gender, height, weight and body mass index were recorded. Blood pressure was directly measured from radial arter and indirectly measured from brachial artery via a automated oscillometric device. Invasive and non-invasive blood pressure and pulse measurements were performed simultaneously. Median systolic and diastolic blood pressures obtained from all patients by both methods. Results: Mean non-invasive systolic blood pressure was 114,6±18,72 mmHg, mean invasive systolic blood pressure was 116,1±18,08 mmHg, mean non-invasive diastolic blood pressure was 69,42±11,31 mmHg, mean invasive diastolic blood pressure was 63,81±12,26 mmHg in the study patients. The difference between mean invasive and non-invasive systolic blood pressure wasn’t significant (p=0,28) but the difference between mean invasive and noninvasive diastolic blood pressure was statistically significant (p<0,001).