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[Course of diabetic retinopathy and metabolic control with subcutaneous insulin infusion pump: 18-month study]
Abstract:
The effect of a good metabolic control in the natural history of diabetic retinopathy is discussed because, although the onset and the incidence are closely related to a bad metabolic control, there is no improvement related to a good control; progression having been reported with the good metabolic controls. 7 patients subjected to a strict control with continuous subcutaneous insulin infusion were compared with a group of 10 patients with a good conventional treatment in an 18 month study. The best metabolic control of the first group was obtained at 9, 12, 15 and 18 months (p less than 0,05). The evolution of retinopathy in this group did not change with the treatment and there was no proof of progression with the use of continuous subcutaneous infusion. Further follow-up evaluation is necessary to confirm this affirmation.
Insights
Strictly controlling blood sugar with continuous subcutaneous insulin infusion did not alter diabetic retinopathy progression in a short-term study. Further research is needed to confirm these findings on metabolic control and diabetes complications.
Area of Science:
- Endocrinology
- Ophthalmology
- Metabolic Diseases
Background:
- Diabetic retinopathy onset and incidence correlate strongly with poor metabolic control.
- However, studies report retinopathy progression even with good metabolic control, questioning its protective effect.
Purpose of the Study:
- To investigate the effect of strict metabolic control using continuous subcutaneous insulin infusion (CSII) on the natural history of diabetic retinopathy.
- To compare CSII with conventional treatment in patients with diabetes.
Main Methods:
- An 18-month study comparing 7 patients on CSII with 10 patients receiving conventional diabetes treatment.
- Metabolic control was assessed over the study period.
Main Results:
- Patients on CSII achieved significantly better metabolic control at 9, 12, 15, and 18 months (p < 0.05).
- Despite improved metabolic control, the evolution of retinopathy in the CSII group showed no change.
- No evidence of retinopathy progression was observed in the CSII group during the study.
Conclusions:
- Strict metabolic control via CSII did not demonstrate a significant impact on diabetic retinopathy progression within 18 months.
- Further long-term follow-up is required to definitively assess the role of intensive glycemic management in preventing or slowing diabetic retinopathy.
- The findings suggest a complex relationship between metabolic control and diabetic retinopathy, warranting continued investigation.