Infusion Doses
Live ranges by weight + drip rate at standard concentrations.
Common ICU Antibiotics
Empiric doses with renal adjustment by CrCl.
Hemodynamics
MAP, shock index, CPP, and pressor load.
Blood Pressure
Enter cuff or arterial line values.
mmHg
mmHg
bpm
MAP—
Pulse Pressure—
Shock Index—
Modified SI—
Enter SBP/DBP to interpret.
Cerebral Perfusion
CPP = MAP − ICP. Adults target ≥ 60 mmHg.
mmHg
auto
CPP—
Enter ICP to compute.
Norepi Equivalents
Comparator of vasopressor load (μg/kg/min equivalents).
μg/kg/min
μg/kg/min
μg/kg/min
μg/kg/min
U/min
NE equivalent—
Sum of norepi-equivalent support.
Ventilator
PBW-based TV, Berlin ARDS, driving pressure.
Tidal Volume (Predicted BW)
PBW needs height + sex. Targets: 4 / 6 / 8 mL/kg.
PBW—
TV 4 mL/kg (low)—
TV 6 mL/kg (target)—
TV 8 mL/kg (max ARDS)—
Oxygenation (P/F & SF)
mmHg
%
%
P/F ratio—
SpO₂/FiO₂—
Enter PaO₂ and FiO₂ for Berlin classification.
Driving Pressure & Compliance
cmH₂O
cmH₂O
mL
Driving pressure—
Static compliance—
Target driving pressure < 15 cmH₂O.
Acid–Base / ABG
Primary disorder, compensation, anion gap, Δ-Δ, A–a.
Inputs
mmHg
mEq/L
mEq/L
mEq/L
mmHg
%
Interpretation
Primary disorder—
Expected compensation—
Anion gap—
Corrected AG—
Δ-Δ ratio—
A–a gradient—
Enter pH, PaCO₂, HCO₃ to start.
Electrolytes
Corrections, osmolality, FWD, K⁺ replacement.
Corrected Calcium
Cacorr = Ca + 0.8 × (4 − albumin)
Corrected Ca—
Reference 8.5 – 10.5 mg/dL.
Corrected Na (hyperglycemia)
Nacorr = Na + 1.6 × (glucose − 100) / 100
mEq/L
Corrected Na—
Serum Osmolality
2·Na + Glucose/18 + BUN/2.8 (+ EtOH/3.7)
Calculated osm—
Osmolar gap—
Normal gap < 10.
Free Water Deficit
FWD = TBW × (Na/target − 1). TBW = 0.6·W (M) / 0.5·W (F).
mEq/L
mEq/L
Free water deficit—
Correct ≤ 10 mEq/L per 24 hr to avoid cerebral edema.
Potassium Replacement
Empiric IV KCl guide.
mEq/L
Suggested replacement—
Max peripheral 10 mEq/hr; central 20 mEq/hr with monitoring.
Renal & Fluids
CrCl, UO, sepsis bolus, maintenance.
Creatinine Clearance
Cockcroft–Gault: (140 − age) × W / (72 × Cr); × 0.85 (F).
CrCl—
Set age, weight, sex, creatinine in the patient bar.
Urine Output
Per kg/hr — oliguria < 0.5 mL/kg/hr.
mL
hr
Rate—
Enter volume + hours.
Sepsis Fluid Bolus
Surviving Sepsis: 30 mL/kg crystalloid within 3 hr.
Target volume—
¼ bolus (250 mL)—
Reassess after each bolus — avoid over-resuscitation.
Maintenance Fluids (4-2-1)
First 10 kg ×4, next 10 kg ×2, remainder ×1 mL/kg/hr.
Maintenance rate—
Clinical Scores
Live scoring with interpretation.
GCS
Glasgow Coma Scale (3–15)
qSOFA
≥ 2 → higher sepsis mortality risk.
SOFA
Organ dysfunction (0–24).
CHA₂DS₂-VASc
Stroke risk in AF.
HAS-BLED
Bleeding risk on anticoagulation.
Wells (PE)
Pretest probability of PE.
RASS
Richmond Agitation–Sedation Scale.
Shift Notes
Scratchpad — stored locally on this device.
Antidotes
Toxicology reversal · overdose antidotes · NMB reversal.
🚨 Rapid Sequence Intubation
Bedside protocol — the 7 P's, all induction agents, paralytics, pre-treatment, and reversal.
The 7 P's
RSI Drug Reference
Doses at a glance — pre-treat → induce → paralyse → reverse.
Neuroprotective Strategy
Evidence-based bundle for TBI, SAH, ischemic stroke, ICH, and post-arrest.
About
Najm ICUCalc — bedside clinical assistant.
Designed by
Author & clinical lead
NameDr. Mohamed Najm
CredentialsMBBS · PgDip EM · FEBN · MRCEM SECONDARY
Version1.2.0
Build—
📧 Contact Us
Questions, feature requests, or clinical corrections — send a note.
mahham2002@yahoo.com
Clinical References
Sources for dose ranges, formulas, and score interpretations.
Disclaimer
Reference aid — not a medical device.
All doses, calculations, and interpretations are for clinical reference only.
Every value must be independently verified by a qualified clinician against
institutional protocols, drug labels, and the patient's clinical context.
The author assumes no liability for clinical decisions made with this tool.