A patient with insulin-dependent diabetes mellitus complicated by diabetic nephropathy and neuropathy, who is able to walk without assistance, would be classified as which ASA physical status?

Question

Accepted Answer

D. ASA III. ## ASA Classification in Complicated Diabetes

**Key Point:** ASA III is assigned to patients with severe systemic disease that causes functional limitation. Diabetes with end-organ complications (nephropathy, neuropathy) is severe, and even though this patient can walk, the presence of multiple organ involvement and disease severity defines ASA III.

## Distinguishing ASA II from ASA III

| Feature | ASA II | ASA III |
| --- | --- | --- |
| Disease severity | Mild systemic disease | **Severe** systemic disease |
| Functional limitation | None; normal activity | Present; activities are limited |
| Examples | Controlled HTN, mild asthma, mild DM without complications | DM with complications (nephropathy, neuropathy, CAD), severe COPD, cirrhosis |
| Perioperative risk | Low to moderate | Moderate to high |

**High-Yield:** The presence of **end-organ damage** (nephropathy, neuropathy, retinopathy) in diabetes automatically elevates the patient to ASA III, regardless of whether they can walk. The disease is severe.

**Mnemonic:** **SEVERE** = **S**ystemic disease, **E**nd-organ damage, **V**ascular complications, **E**levated risk, **R**equires careful evaluation, **E**quals ASA III (or higher).

## Why ASA III?

1. **Severity of disease:** Diabetes with nephropathy and neuropathy represents severe, multi-system involvement.
2. **End-organ damage:** Renal and neurological complications indicate advanced disease.
3. **Functional status caveat:** Although the patient can walk, ASA classification is based on disease severity and systemic impact, not just mobility. The presence of nephropathy and neuropathy indicates functional compromise (reduced renal function, impaired sensation).
4. **Perioperative risk:** Such patients have significantly elevated risk of perioperative complications (acute kidney injury, hypoglycemia, infection, delayed healing).

Answer

A. ASA IV

Answer

B. ASA V

Answer

C. ASA II

A patient with insulin-dependent diabetes mellitus complicated by diabetic nephropathy and neuropathy, who is able to walk without assistance, would be classified as which ASA physical status?

Explanation

ASA Classification in Complicated Diabetes

Distinguishing ASA II from ASA III

Why ASA III?

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Feature	ASA II	ASA III
Disease severity	Mild systemic disease	Severe systemic disease
Functional limitation	None; normal activity	Present; activities are limited
Examples	Controlled HTN, mild asthma, mild DM without complications	DM with complications (nephropathy, neuropathy, CAD), severe COPD, cirrhosis
Perioperative risk	Low to moderate	Moderate to high