RNPedia PNLE Nursing Practice 4 Test 1 Practice

What is the fundamental pathophysiology difference between Type I and Type II diabetes?

Type I is autoimmune destruction of pancreatic beta cells leading to insulin deficiency; Type II is insulin resistance with progressive beta-cell dysfunction Type I is autoimmune destruction of pancreatic beta cells leading to insulin resistance; Type II is insulin deficiency with beta-cell hyperfunction Type I is obesity-related insulin resistance; Type II is autoimmune destruction Type I is pancreatic cancer; Type II is pancreatitis

Correct Answer:

Type I is autoimmune destruction of pancreatic beta cells leading to insulin resistance; Type II is insulin deficiency with beta-cell hyperfunction

Explanation:

Type I diabetes is driven by autoimmune destruction of pancreatic beta cells, which leads to an absolute deficiency of insulin—the body can’t produce enough insulin at all and patients rely on insulin therapy for survival. Type II diabetes starts with insulin resistance in peripheral tissues, so the body's cells don’t respond well to insulin. In response, the pancreas makes more insulin (hyperinsulinemia) for a while, but over time the beta cells can fail and insulin secretion declines, creating a relative deficiency. So the fundamental difference is: absolute insulin deficiency in Type I due to autoimmune beta‑cell destruction, versus insulin resistance with progressive beta‑cell dysfunction in Type II.

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