Vancomycin Dose Calculator

Input Patient Parameters.
Ensure all required patient data are entered accurately before proceeding.
All dose calculations are for adult patients only.

Patient Inputs

Actual Body Weight (ABW) (kg):

Dialysis Status:

Serum Creatinine (μmol/L) (optional):

Creatinine Clearance (CrCl) (ml/min):

Need help? 🔗 Renal Function (CrCl) Calculator

Vancomycin-Dialysis Timing:

Indication of Vancomycin:

Type of IV Access Available:

Summary of Inputs

STEP 1: Loading Dose (LD)

💡 Notes:

Loading Dose – To be given to ALL patients regardless of renal function.
Max Vancomycin dose: 2 g/DOSE.
If HD occurs on the same day as the loading dose, administer a TOP-UP DOSE post-HD.

STEP 2: Maintenance Dose (MD) & Frequency

STEP 3: Administration (Dilution & Infusion Rate)

3.1 Loading Dose Dilution & Administration:

3.2 Maintenance Dose Dilution & Administration:

💡 Maximum Infusion Rate:

Do not exceed 10 mg/min.
Infusing too rapidly may cause infusion-related reactions (Red Man Syndrome).

Step 3.3 – Special Warnings & Adjustments

! Vancomycin Infusion Reaction (VIR / “Red Man Syndrome”)

VIR is a common infusion-related reaction, not an allergy.
Symptoms: Itching, flushing, and erythematous rash involving the face, neck, or upper trunk.
Management:

Stop or slow the infusion rate — symptoms usually resolve.
Antihistamines (e.g., chlorpheniramine or diphenhydramine) may help if symptoms persist.
For subsequent doses, infuse at ≤ 10 mg/min to minimize recurrence.

! Fluid Volume Considerations - High Dilution Volume Advisory

For patients with fluid restrictions or heart failure, consider alternative dilution strategy or slower infusion rate.

! Phlebitis / Peripheral Line Irritation Risk

Peripheral administration of vancomycin may cause local irritation or phlebitis, particularly at higher concentrations. Use the largest available vein and monitor the site for redness, pain, or swelling

STEP 4: Therapeutic Drug Monitoring (TDM) Guidance

4.1. When to Take the First TDM Sample

4.2. Do you need a post-dose (Peak) level?

💡 General Advisory:

If the sampling time falls after office hours (AOH), it is recommended to collect the sample the following morning.

Documentation Reminder:

TDM results are meaningless unless:
1. The prescribed dose was correctly administered, and
2. The exact timing of infusion and sampling is accurately recorded.

Record all relevant details in the 📄 Vancomycin AUC Monitoring Form

STEP 5: Patient / Laboratory Monitoring

Monitor renal profile (RP) and urine output regularly.
Ensure the patient remains well hydrated while on Vancomycin.
Avoid concomitant nephrotoxic agents where possible.
Monitor WBC, CRP & Vital Signs for signs of improvement/deterioration.

Clinical Note Section (Auto-Generated)

Disclaimer! This note is intended as a template only - please review and adjust it based on your clinical assessment and professional judgement.

VANCOMYCIN THERAPY RECOMMENDATION

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Received query from Dr regarding IV Vancomycin initiation for this patient.

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PATIENT SUMMARY

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RECOMMENDED REGIMEN

LOADING DOSE:

MAINTENANCE DOSE:

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TDM SAMPLING

- TDM instructions not generated.

IMPORTANT:

- TDM blood sample should be obtained via venipuncture whenever possible, from the arm opposite to drug administration.

- Do not collect TDM samples from central lines (e.g. PICC, CVC, or other central venous catheters).

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REMARKS

- Monitor renal profile (RP) and urine output regularly.

- Ensure the patient remains well hydrated while on Vancomycin.

- Avoid concomitant nephrotoxic agents where possible.

- Infusion rate must not exceed 10 mg/min to minimize infusion-related reactions.

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Vancomycin Calculator Disclaimer

Recommendation is based on Hospital Sungai Buloh Vancomycin Protocol. 🔗 Refer to Hosp Sungai Buloh Vancomycin Protocol.
Clinical correlation is required.
If in any doubt, call TDM Pharmacy (Ext: 4124) or refer to Infectious Disease (ID).
Referral to ID or AMS Team is strongly recommended for all MRSA or Vancomycin cases.