Efficacy of screening for high blood pressure in dental health care

Engström, Sevek; Berne, Christian; Gahnberg, Lars; Svärdsudd, Kurt
January 2011
BMC Public Health;2011, Vol. 11 Issue 1, p194
Academic Journal
Background: There is consensus on the importance of early detection and treatment of high blood pressure. Dental care is one of few medical services to which a considerable proportion of the general population comes for regular check-ups. We tested the effects of blood pressure screening in dental care centres with subsequent workup of subjects screening positive in primary health care (PHCC). Methods: Altogether 1,149 subjects 40-65 years old or 20-39 years old with body mass index >25, and with no previously known hypertension, who came for a dental examination had their blood pressure measured with an Omron M4® automatic blood pressure reading device. Subjects with systolic blood pressure readings above 160 mmHg or diastolic above 90 mmHg were referred to their PHCC for a check up. Outcome data were obtained by scrutiny of PHCC and hospital patient records for hypertension diagnoses during the three years following screening. Results: 237 (20.6%) subjects screened positive. Of these, 230 (97.1%) came to their PHCC within the 3-year followup period, as compared with 695 (76.2%) of those who screened negative (p < 0.0001). Of those who screened positive, 76 (32.1%) received a diagnosis of hypertension, as compared with 26 (2.9%) of those who screened negative. Sensitivity was 79.1%, specificity 84.8% and positive predictive value 30.1%. The number of subjects needed to screen to find one case of hypertension was 18. Conclusions: Co-operation between dental and primary care for blood pressure screening and work-up appears to be an effective way of detecting previously unknown hypertension.


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