1534435
| Question | Answer |
| NGT or IDC size Calculation | = 2x ETT size where ETT size = (Age/4) +4 |
| ETT size calculation General | (Age/4) + 4 |
| ETT size neonates | <28 weeks: size 2.5 28 to 34 weeks: size 3 34 to 38 weeks: size 3.5 Term: size 4 |
| Mean arterial pressure (MAP) | = [(2xDBP)+SBP]/3 = (pulse pressure/3) + DBP |
| Pulse pressure | = SBP minus DBP |
| Insertion depth ETT cm Calculation | (ETT size) x3 |
| Shock index | = HR/SBP Normal 0.5 to 0.7 |
| ICC size in kids Calculation | = 4 x ETT size |
| Paeds weight Calculation | = 2x(age + 4) or (age x 3) + 7 |
| Troubleshooting ventilator | DOPES: Displaced/Obstructed ETT, Pneumothorax, Equipment failures, Stacking (breaths) |
| Drug doses in obesity Use TOTAL weight in calcs | FAT MEN SUX: Fentanyl, Atracurium, Thiopentone, Midazolam, Etomidate, Narcan, Suxamethonium |
| Drug doses in obesity Use lean weight in calcs | Ketamine Propofol Vec/rocuronium Tidal volume |
| 8.4% sodium bicarb uses | 1. Cardioprotection (TCA, propranolol, Na blockers) 2. Decr CNS redistribution (salicylates) 3. Incr urine elim (salicylates, phenobarb), incr urine solubility (MTX) 4. Life threatening acidosis (pH <7.2) : cyanide, isoniazid, toxic alcohols 5. Severe hyponatraemia |
| 8.4% sodium bicarb Dose in severe hyponatraemia | If seizures, 50mL (=50mmol), can repeat. Aim Na 120 or stop seizures then stop replacing. Aim Na increase 10mmol/L per day, 1mmol/L/hr |
| 3% sodium bicarb Dose in severe hyponatraemia | If seizures, 250mmol in 10 min Will incr Na by 7. Aim Na 120 or stop seizures then stop replacing. Otherwise: 50mmol/hr = 1 to 2mL/kg/hr |
| DCR joules | 50J flutter 100J AF |
| Antiarrhythmic doses Fleicanide | 2mg/kg infusion Only if normal LVEF with no CAD |
| Antiarrhythmic doses Sotalol | 1mg/kg infused over 15 mins Can repeat once Then 80 to-160mg IV over 2/24 (PO 40 to 160mg BD) |
| Antiarrhythmics Which to use Atrial vs ventricular rhythms | Atrial: amiodarone, fleicanide Ventricular: amiodarone, sotalol |
| Chemicals NOT for water irrigation | Phenols (polyethylene glycol) Alkali metals (mineral oil) |
| DIC Causes | HOT MISS Hepatic failure, Obstetric (eclampsia, embolus, foetal death in utero), Trauma, Malignancy (AML, prostate), Immune (anaphylaxis, transfusion), Shock, Sepsis (G neg, haemorrhagic fevers) |
| Blood products | FFP: coagulation factors except VII Cryoprecipitate: fibrinogen Vasopression: decr coagulopathy due to liver failure |
| INR vs APTT | INR measures EXTRINSIC pathway (used in warfarin monitoring) APTT measures INTRINSIC pathway |
| Trauma assessment | ATOM CF Airway, Tension PTx, Open PTx, Massive HTx, cardiac tamponade, Flail chest PAMDOT Pulmonary contusion, Aortic dissection, Myocardial injury, Diaphragm injury, Oesophageal injury, Tracheobronchial injury |
| Adrenal crisis | Low Na, BSL, BP High K, Ca, temp Seizures Mx: hydrocortisone and/or fludrocortisone |
| Sgarbossa criteria LBBB, MI | Concordant STE 1mm or more Concordant STD 1mm or more V1 to V3 Discordant STE 5mm or more (less specific) Criteria met if found in ONE lead |
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