Diabetes Chronic Complications

The patient with diabetes who "feels fine" may already have irreversible organ damage silently progressing. Chronic complications don't announce themselves — your screening schedule catches them.

Chronic hyperglycemia damages blood vessels through two pathways: microvascular (small vessel) and macrovascular (large vessel). Microvascular complications include retinopathy, nephropathy, and neuropathy. Retinopathy is the leading cause of blindness in working-age adults — annual dilated eye exams start at diagnosis for type 2 and within 5 years for type 1. Nephropathy begins as microalbuminuria (urine albumin-to-creatinine ratio ≥30 mg/g), progressing to end-stage renal disease; annual urine albumin screening is essential. Peripheral neuropathy presents as "stocking-glove" numbness, burning, or tingling in the feet first, creating injury risk the client cannot feel. Macrovascular complications — coronary artery disease, stroke, and peripheral arterial disease — are the leading cause of death in diabetes. Cardiovascular risk is 2-4 times higher than in nondiabetics. A general HbA1c target below 7% slows microvascular progression significantly. Nurses assess feet at every visit: skin integrity, sensation (monofilament testing), pedal pulses, and capillary refill. Poorly healing wounds, especially on feet, can escalate to osteomyelitis and amputation. Autonomic neuropathy causes gastroparesis, orthostatic hypotension, and neurogenic bladder — symptoms students frequently overlook.

Key Distinctions

Don't confuse peripheral neuropathy (sensory loss, burning pain in extremities) with peripheral arterial disease (diminished pulses, claudication, cool extremities) — both affect the feet but through different mechanisms. Students mix up microalbuminuria (early, reversible nephropathy marker) with elevated serum creatinine (late-stage kidney damage). Autonomic neuropathy is not the same as peripheral neuropathy — it affects internal organs, not just hands and feet.

Clinical Pearl

Eyes, kidneys, nerves, feet, heart — screen them all on schedule. The damage that blinds or amputates started years before the client noticed anything.