Self-monitoring of blood glucose improved glycemic control and the 10-year coronary heart disease risk profile of female type 2 diabetes patients in Trinidad and Tobago

Abstract

The risk of death from coronary heart disease (CHD) in women with diabetes is more than three times that of non-diabetic women. We assessed the difference in CHD risk levels of Afro-Caribbean diabetic women provided with facilities for self-monitoring of blood glucose and their counterparts without such facilities Forty-nine patients who never used gluco-meters were studied as intervention (23) and control (26) groups. The intervention group was trained on self-monitoring of blood glucose. At baseline, BP, anthropometric indices, and fasting blood glucose of all patients were measured. Subsequently, the intervention patients were provided with gluco-meters, testing strips, and advised to self-monitor fasting and postprandial blood glucose every other day for 6 months. CHD risk was determined with the United Kingdom Prospective Diabetes Study risk engine calculator. The age, duration of diagnosis of diabetes, BP, and anthropometric indices were similar in the two groups (all, P > 0.05). The majority of the patients were unemployed or retired with only primary education. After 3 months, the HbA 1c levels of the control patients did not change (8.3 ± 0.4% vs. 7.8 ± 0.4%, P > 0.05) whereas the HbA 1c levels of the intervention patients reduced significantly from the baseline at 3 (9.2 ± 0.4% vs. 7.4 ± 0.3%, P <0.001) and 6 (9.2 ± 0.4% vs. 7.3 ± 0.3%, P <0.001) months. The 10-year CHD risk level of the intervention group was remarkably reduced from the baseline level after 6 months (7.4 ± 1.3% vs. 4.5 ± 0.9%) of the study. Provision of facilities for self-monitoring of blood glucose in Afro-Caribbean women with type 2 diabetes improves both their glycemic control and CHD risk profile.