The SOAP Framework
The SOAP format—Subjective, Objective, Assessment, Plan—provides a structured approach to clinical case management. It ensures thorough documentation, clear communication, and systematic reasoning. Whether you are a student presenting on rounds or a clinician writing medical records, SOAP organizes information in a way that supports good decision-making.
Subjective
The Subjective section captures information from the owner: the chief complaint, history of present illness, and relevant past medical history. What brought the pet in today? When did it start? What has changed? Has anything been tried at home? Include diet, environment, vaccination status, and medications. The history often points toward the diagnosis—listen carefully and ask follow-up questions.
Objective
The Objective section includes measurable findings: vital signs, physical examination, and diagnostic results. Record temperature, heart rate, respiratory rate, body weight, and body condition score. Document physical exam findings by system. Include laboratory values, imaging, and other test results. Be precise and avoid interpretation in this section; save analysis for Assessment.
Assessment
Assessment is where you synthesize Subjective and Objective data into a problem list and differential diagnoses. List problems in order of severity or clinical significance. For each problem, consider differentials—what could cause this? Rank them by likelihood. This is the heart of clinical reasoning: pattern recognition, hypothesis generation, and prioritization.
Plan
The Plan outlines diagnostic and therapeutic steps. For each problem, specify: further diagnostics (if needed), treatment, monitoring, and client education. Be specific: drug names, doses, routes, and frequencies. Include follow-up plans and criteria for recheck or referral.
Example Case: Acute Vomiting
Subjective: 3-year-old Labrador, 2-day history of vomiting (4-5 times daily), inappetence, lethargy. No known toxin exposure. Vaccinations current. No recent diet change.
Objective: T 102.5°F, HR 120, RR 24, BCS 5/9. Dehydrated (8%), tacky mucous membranes. Abdomen soft, no pain on palpation. No foreign body on radiographs.
Assessment: 1) Acute vomiting—differentials: dietary indiscretion, gastroenteritis, pancreatitis, foreign body (less likely given radiographs), toxin, metabolic (e.g., renal). 2) Dehydration—secondary to vomiting.
Plan: IV fluids to correct dehydration; antiemetic (maropitant 1 mg/kg IV q24h); NPO 12-24 hours; recheck in 24 hours. If no improvement, consider abdominal ultrasound and pancreatitis testing.
Building Differential Diagnoses
Use the acronym VITAMIN D (Vascular, Infectious/Inflammatory, Traumatic, Autoimmune, Metabolic, Idiopathic, Neoplastic, Degenerative) or similar frameworks to ensure you do not miss categories. Consider signalment: young dogs get different differentials than seniors. Consider geography: tick-borne disease, endemic fungal infections. Consider history: travel, diet, exposure. Prioritize by likelihood and by "don't miss" conditions—those that are treatable but fatal if overlooked.