Calculators, scales and references nurses reach for every shift — including a deep ICU section for ventilation, ABGs, CRRT, sedation and delirium.
Every tool in one searchable grid.
Body Mass Index for adults (≥20 yrs). Uses WHO classification.
Mosteller formula. Used in chemotherapy dosing and haemodynamic indices (e.g. cardiac index).
Volume to administer using the desired-over-stock formula.
Pump rate (mL/hr) and gravity drip rate (gtt/min) in one calculation.
Cockcroft–Gault estimate used for renal-based drug dosing.
Devine formula. Used for lung-protective tidal volumes and weight-based dosing.
ARDSnet target: 4–8 mL/kg of Ideal Body Weight. Default 6 mL/kg.
Bedside summary of the modes you'll actually see in adult ICU.
Fixed Vt, every breath (mandatory or triggered).
Fixed inspiratory pressure; Vt varies with compliance.
Mandatory breaths synchronised with patient effort; spontaneous breaths in between.
Targets a set Vt at the lowest pressure possible breath-to-breath.
Spontaneous breathing only; PS boosts each patient effort, CPAP holds airway open.
Two pressure levels (Phigh / Plow) with spontaneous breathing allowed at both.
Prolonged Phigh with brief releases to Plow; spontaneous breathing throughout.
Very small Vt at 3–15 Hz; constant mean airway pressure.
IPAP supports inspiration, EPAP holds airway open. Via mask.
Single continuous pressure; entirely spontaneous breathing.
Quick primary disorder + compensation read from pH, PaCO₂ and HCO₃⁻.
Perfusion-focused average arterial pressure across the cardiac cycle.
Oxygenation index used for ARDS staging by the Berlin definition.
Quick neuro assessment scored from 3 (deep coma) to 15 (fully alert).
Richmond Agitation-Sedation Scale. Typical ICU target is 0 to −2 unless deep sedation is indicated.
Confusion Assessment Method for the ICU. Screen each shift in alert (or arousable) patients.
Critical-Care Pain Observation Tool for sedated or intubated adults.
KDIGO target 20–25 mL/kg/hr delivered; prescribe 25–30 mL/kg/hr to account for downtime.
Weight-based bolus and infusion. Defaults follow common VTE / ACS nomograms.
Convert between opioids using oral morphine equivalents (MME).
Heart-rate corrected QT interval. Use to flag risk of Torsades de Pointes.
Holliday-Segar 4-2-1 rule for hourly maintenance + 100-50-20 daily equivalent.
Weight-based dose with optional adult cap and volume to administer.
Quick conversions for the units you reach for most at the bedside.
Common adult reference ranges. Search by analyte, range, or notes.
| Analyte | Reference range | Clinical note |
|---|---|---|
| Sodium (Na+) | 135-145 mEq/L | Hyponatremia/Hypernatremia |
| Potassium (K+) | 3.5-5.0 mEq/L | Cardiac arrhythmias risk |
| Chloride (Cl-) | 98-106 mEq/L | — |
| Bicarbonate (HCO3-) | 22-28 mEq/L | Acid-base status |
| Calcium (Ca2+) | 8.5-10.5 mg/dL | Tetany/arrhythmia |
| Magnesium (Mg2+) | 1.5-2.5 mEq/L | Neuromuscular, torsades |
| Creatinine | 0.6-1.3 mg/dL | Renal function |
| BUN | 7-20 mg/dL | Renal perfusion |
| Glucose (fasting) | 70-99 mg/dL | DM screening |
| Hemoglobin | M 13.5-17.5 / F 12-16 g/dL | Anemia |
| Platelets | 150-400 x10^3/µL | Bleeding risk |
| WBC | 4-11 x10^3/µL | Infection/inflammation |
| pH (arterial) | 7.35-7.45 | Acid-base balance |
| PaCO2 | 35-45 mmHg | Respiratory component |
| HCO3- (ABG) | 22-26 mEq/L | Metabolic component |
| PaO2 | 80-100 mmHg (room air) | Oxygenation |
| SaO2 | ≥95% | Oxygen saturation |
| Lactate | 0.5-2.0 mmol/L | Tissue hypoperfusion |
| Base Excess | −2 to +2 mEq/L | Metabolic status |
These tools are study and practice aids. They are not a substitute for clinical judgement, organisational policy or pharmacist verification of high-risk medications.