Fifteen years with clinical guidelines in the treatment of hypertension--still discrepancies between intentions and practice.

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Abstract
Objective-To assess physicians' current adherence to the Norwegian clinical guidelines for the treatment of hypertension. Design-Descriptive, retrospective registration of information from patient records of one specified year. In addition, mailed questionnaire to examine the representativeness of the participating doctors. Setting-General practice in Sør-and Nord-Trøndelag counties in Norway, 380 000 inhabitants. Patients-In one year 2468 patients were registered with the diagnosis of hypertension in the records of 56 general practitioners. The patients were 57% women and 43% men; 41% were 70 years or older. Main outcome measures-Levels of blood pressure in accordance with the recommendations of the Norwegian clinical guidelines for hypertension. Fractions of patients with a measured blood pressure and serum cholesterol in one year. Results-At least one blood pressure was recorded in 95% of the hypertensive patients during the specified year. The systolic blood pressure was 140 mmHg or less in 25% and 160 mmHg or less in 65%, while the diastolic blood pressure was 90 mmHg or less in 61%. According to the Norwegian clinical guidelines for systolic blood pressure, 29% of the women and 21% of the men were above recommended levels for treatment With respect to the diastolic blood pressure, the figures were 38% for women and 40% for men. Patients under 60 years of age were often not treated according to the recommendations. Serum cholesterol was not recorded during the specified year in 68% of the total group, nor in 55% of patients aged 65 years or younger. Conclusion-There are still major discrepancies between current practice and the intentions laid down in the Norwegian clinical guidelines. A discussion of alternative methods for implementation and for evaluation of the efficacy of clinical guidelines is needed.