ABG & VBG Calculator – Blood Gas Analysis Tool by Dr Lakdhesz

ABG/VBG Interpreter + ECG Helper

© 2025 by Dr Lakdhesz.

ABG / VBG Interpreter

Sample type ABG (arterial)VBG (venous)

pH

PCO2 (mmHg)

HCO3 (mEq/L)

Estimate arterial from VBG

apply small correction if VBG

VBG to ABG rough guide: pH_a = pH_v + 0.03; PaCO2 = PvCO2 - 5 mmHg. Use with caution.

Electrolytes / Extras (optional)

Na (mEq/L)

Cl (mEq/L)

Albumin (g/dL)

PaO2 (mmHg)

FiO2 (fraction)

Age (years)

Safety: This is an educational aid, not a diagnostic device. Check the whole clinical picture and local protocols.

ECG Quick Interpretation

Heart rate (bpm)

RR interval (ms) optional

PR (ms)

QRS (ms)

QT (ms)

P waves PresentAbsentFlutter / sawtooth

Rhythm flag

irregularly irregular

Lead I QRS PositiveNegativeIsoelectric

aVF QRS PositiveNegativeIsoelectric

Ischaemia / injury

ST elevation ST depression T inversion Pathologic Q

Disclaimer: Educational reference only,not a substitute for clinical judgment.