## Clinical Assessment This patient presents with **iron deficiency anemia (IDA)** with clear biochemical confirmation: - Hemoglobin 7.2 g/dL (moderate anemia) - MCV 62 fL (microcytic) - Serum ferritin 8 ng/mL (severely depleted iron stores) - Peripheral smear findings consistent with IDA ## Management Algorithm for IDA ```mermaid flowchart TD A[Iron Deficiency Anemia Confirmed]:::outcome --> B{Severity & Symptoms?}:::decision B -->|Mild-Moderate, Stable| C[Oral Iron Therapy]:::action B -->|Severe, Unstable, or Transfusion needed| D[IV Iron ± Transfusion]:::action C --> E[Reassess Hb in 4 weeks]:::action E --> F{Response?}:::decision F -->|Good response| G[Continue therapy, Investigate cause]:::action F -->|No response| H[IV Iron, Investigate cause]:::action D --> I[Investigate underlying cause]:::action ``` ## Why Oral Iron is First-Line Here **Key Point:** In stable, non-transfusion-dependent IDA, **oral iron is the standard first-line therapy**, regardless of cause. - **Hemoglobin 7.2 g/dL** is moderate anemia; patient is hemodynamically stable (no mention of shock, severe dyspnea at rest, or cardiac compromise) - **Oral ferrous sulfate 200 mg daily** (or equivalent) is effective and cost-effective - **Expected response:** Reticulocytosis in 3–5 days; Hb rise of 1–2 g/dL per month - **Reassessment at 4 weeks** confirms response and guides further investigation **High-Yield:** Oral iron is preferred unless: - Patient is unable to tolerate (GI side effects) - Malabsorption (celiac, post-gastrectomy) - Transfusion-dependent (Hb < 5 g/dL with symptoms) - Urgent need (cardiac/pulmonary compromise) ## Investigating the Cause (Parallel Step) Once iron therapy is started, the cause of IDA must be identified: - **In women of reproductive age:** Menorrhagia is most common; detailed menstrual history - **GI bleeding:** Upper GI endoscopy only if oral iron fails to produce expected response OR if alarm symptoms present (none here) - **This patient:** Angular cheilitis suggests chronic deficiency; dietary assessment and menstrual history are initial steps **Clinical Pearl:** Do NOT delay iron therapy while investigating cause. Start treatment immediately in symptomatic IDA; investigate in parallel. ## Why Ferrous Sulfate? | Iron Salt | Elemental Fe | Absorption | Cost | Tolerability | |-----------|--------------|------------|------|---------------| | Ferrous sulfate | 65 mg/200 mg | Best | Lowest | GI upset common | | Ferrous fumarate | 65 mg/200 mg | Good | Low | Better tolerated | | Ferric compounds | Variable | Poor | Higher | Better tolerated | **Tip:** Give ferrous sulfate on empty stomach (better absorption) with vitamin C; if GI upset, switch to ferrous fumarate or take with food (reduces absorption by ~25%). 
Sign up free to access AI-powered MCQ practice with detailed explanations and adaptive learning.