Microvascular complications at diagnosis of type 2 diabetes mellitus: A cross-sectional study from a South Indian community hospital
S. Jayaram
A
BSTRACT
Background:
Type 2 diabetes mellitus (T2DM) is a global health emergency affecting over 537 million adults worldwide, with India alone accounting for 74.2 million cases. A critical but underrecognized feature is the prolonged asymptomatic phase of 4–7 years preceding clinical diagnosis, during which microvascular complications silently develop. Screening at diagnosis is therefore essential to reduce morbidity and prevent progression to blindness, end-stage renal disease, and limb amputation. This study was designed to determine the prevalence of microvascular complications at the time of T2DM diagnosis in a South Indian community hospital setting, with direct implications for family medicine and primary care practice.
Methods:
A cross-sectional observational study was conducted at Sundaram Medical Foundation, Dr. Rangarajan Memorial Hospital, Chennai, India, over one year (June 2016–June 2017). Ninety-one consecutive newly diagnosed T2DM patients attending the master health check-up clinic were enrolled following The American Diabetes Association diagnostic criteria. Peripheral neuropathy was assessed using the validated Michigan Neuropathy Screening Instrument (MNSI); nephropathy by serum creatinine and urine protein–creatinine ratio (PCR); and retinopathy by dilated fundus examination performed by a consultant ophthalmologist. Data were analysed using SPSS v19.0.
Results:
The mean age of participants was 53.15 ± 11.94 years (57.1% male). The overall prevalence of at least one microvascular complication was 33.0%. Peripheral neuropathy was most prevalent (26.4%), followed by nephropathy (15.4%) and retinopathy (1.1%). Importantly, 81.3% of patients were asymptomatic at diagnosis. Nephropathy was more frequent in older patients, but not significantly (
Conclusion:
Nearly one in three newly diagnosed T2DM patients in a community hospital setting already harbour microvascular complications at the time of first diagnosis, and most of them are asymptomatic. Universal screening for peripheral neuropathy using MNSI and for nephropathy using the urine PCR ratio is feasible, inexpensive, and strongly recommended as standard practice in primary care and family medicine. Early detection enables timely intervention and prevents irreversible end-organ damage.