⚠️ Important Disclaimer

What the Wound Looks Like

• A central open ulceration with a linear fissure containing reddish-brown tissue (granulation tissue mixed with dried blood/slough)
• A thick ring of white-yellow slough (non-viable tissue) surrounding the center
• Heavy crusting and hyperkeratosis (thickened, scaly skin) around the edges
• Surrounding redness and inflammation (erythema)
• Signs of possible infection or an underlying condition preventing healing

Tests Your Doctor Will Likely Order

1. Blood Tests (Systemic Workup)

2. Wound-Specific Tests

3. Vascular / Blood Flow Tests

4. Imaging Studies

5. Skin / Immunological Tests

Red Flags - See a Doctor Urgently If You Have:

• Fever, chills, or feeling generally unwell
• Increasing redness, warmth, or swelling spreading from the wound
• Foul-smelling discharge or pus
• Black/dead tissue in the wound
• Wound getting larger rather than smaller
• Numbness or loss of sensation around the wound
• The wound is over a joint and affects movement

Most Likely Reasons Your Wound Has Not Healed

1. Uncontrolled diabetes (most common)
2. Wound infection (bacterial or fungal)
3. Poor blood supply (vascular disease)
4. Malnutrition (low protein, low zinc/vitamin C)
5. Foreign body still inside the wound
6. Underlying bone infection (osteomyelitis)
7. Rare: skin cancer developing in an old wound (Marjolin's ulcer)
8. Autoimmune condition (pyoderma gangrenosum)

• RBS 130 mg/dL - borderline high (normal fasting <100, random <140)
• 2hr PPBS 163 mg/dL - this is in the pre-diabetic/diabetic borderline range (normal <140, pre-diabetes 140-199, diabetes ≥200)
• CRP 7.2 mg/L - elevated (normal <5 mg/L), indicating active inflammation/infection in the wound

Interpretation of Test Results

1. RBS (Random Blood Sugar) - 130 mg/dL

2. Two-Hour PPBS (Post Prandial Blood Sugar) - 163 mg/dL ⚠️

• Impairs neutrophil (immune cell) function, reducing the ability to fight wound infection
• Reduces collagen synthesis, slowing tissue repair
• Damages small blood vessels (microangiopathy), reducing oxygen and nutrient delivery to the wound
• Promotes bacterial growth in the wound environment

3. CRP (C-Reactive Protein) - 7.2 mg/L ⚠️

What These Results Mean Together

What Tests to Add Next (Based on These Results)

1. HbA1c - Most important. Gives average blood sugar over past 3 months. Will confirm whether the patient has been hyperglycemic throughout the wound's duration. This could be the primary reason the wound hasn't healed.
2. Fasting Blood Sugar (FBS) - To formally complete the diabetes diagnostic criteria alongside PPBS.
3. Wound Swab Culture & Sensitivity - CRP elevation strongly suggests bacterial infection. Culture identifies the exact bacteria and the right antibiotic.
4. ESR (Erythrocyte Sedimentation Rate) - Complements CRP; helps assess depth of inflammation (also rises with osteomyelitis/bone infection).
5. Serum Albumin - Nutritional marker; low albumin + pre-diabetic state = very poor wound healing prognosis.
6. X-ray of the wound area - Rule out underlying bone infection (osteomyelitis), which would also elevate CRP.

Summary Impression

This patient has impaired glucose tolerance (pre-diabetes) with a mildly elevated CRP, indicating active wound inflammation likely from infection. The combination of borderline hyperglycemia and wound infection is the most probable reason this wound has not healed in 2 months.

1. Get HbA1c + Fasting Sugar to confirm metabolic status
2. Send wound swab for culture and start empirical antibiotics while awaiting results
3. Refer to a wound care specialist or surgeon for professional wound debridement (removal of slough and dead tissue visible in the image)
4. Dietary counseling and glucose management even at pre-diabetic stage

• Goldman-Cecil Medicine International Edition, Diagnostic Criteria for Diabetes, Table 210-3
• Quick Compendium of Clinical Pathology 5th edition, Diagnostic criteria for pre-diabetes

Revised Interpretation - FBS 130 mg/dL

Diabetes Diagnostic Criteria (Standard Reference Values)

This Patient's Results - Full Picture

Key Clinical Interpretation

FBS 130 mg/dL = DIABETES MELLITUS

• FBS ≥ 126 mg/dL on a single test is sufficient to diagnose diabetes (if symptoms are present, like a non-healing wound)
• Ideally, a repeat fasting test on a different day confirms it, unless there are clear clinical features
• This patient has both FBS 130 AND PPBS 163 both abnormal - together they strongly confirm Type 2 Diabetes Mellitus

Why 2hr PPBS is 163 (not ≥200)?

CRP 7.2 mg/L = Active Infection / Inflammation

• Confirms the wound has active bacterial colonization or infection
• In a diabetic patient, wounds get infected more easily because:
  • Neutrophils (infection-fighting cells) function poorly in high glucose
  • Blood vessel damage reduces antibiotic and immune cell delivery to the wound
  • High glucose is literally a nutrient medium for bacteria to grow

What This Means for the Non-Healing Wound

Confirmed Diagnosis: Uncontrolled / Newly Diagnosed Type 2 Diabetes with infected chronic wound

• High fasting sugar (130)
• Active infection (CRP 7.2)
• 2-month duration without healing

Immediate Next Steps

Tests Still Needed

Treatment Priorities

1. Start blood sugar control immediately - even diet modification and metformin can dramatically improve wound healing
2. Wound debridement - the slough seen in the image must be removed professionally
3. Antibiotics - based on culture results (CRP confirms active infection)
4. Wound dressing - appropriate moist wound healing dressings
5. Nutritional support - protein-rich diet, zinc and Vitamin C supplementation

Bottom line: FBS 130 + PPBS 163 together confirm Diabetes Mellitus. The elevated CRP 7.2 confirms wound infection. This patient needs urgent diabetic wound care management. Please refer to an endocrinologist + wound care surgeon without delay.

• Henry's Clinical Diagnosis and Management by Laboratory Methods, Criteria for Diagnosing Diabetes Mellitus
• Goldman-Cecil Medicine, Diagnostic Criteria for Diabetes, Table 210-3