General Hb and Haematocrit The ratio of haemoglobin to haematocrit in healthy people is typically three to one. Example:So, if haematorcrit is 36, estimated Hb is 12// If Hb is 12, estimated haematocrit is 36 Reference: https://www.omnicalculator.com/health/hct-hgb#:~:text=The%20ratio%20of%20hematocrit%20to,by%20dividing%20it%20by%203. Paediatrics White cell Count• Newborn: 9 – 30 ×109/L• <2 years: 6.2 – 17×109/L• > 2 years: 5 […]
Normal Value Causes of Increased D-Dimer • Thromboembolism• Sepsis (organ dysfunction → raised D-dimer)etc. Sensitivity / Specificity Sensitivity / specificity in thromboembolism:• Sensitivity: >95%• Specificity: 61 – 64%• Negative predictive values: 99% Thus,• Positive D-Dimer alone cannot diagnose VTE • Negative D-Dimer can exclude VTE Reference The Sensitivity and Specificity of a Red Blood Cell […]
Causes of Raised Lactate Level Some common causes: • Sepsis• MDI / Nebulizer • Serum Lactate in Sepsis • Prognostication / Indicator of severity — In sepsis, serum lactate level correlates with Related Posts Q&A Reference
Interpretation of Renal Profile • Basic Interpretation of Renal Profile by Dr Rafidah Abdullah (Consultant Nephrologist) [open] Paediatrics Potassium• Birth – 2 weeks: 3.7 – 6.0 mmol/L• 2 weeks – 3 months: 3.7 – 5.7 mmol/L• ≥3 months: 3.5 – 5.0 mmol/LSource: Paediatric Protocol 4th Ed, page 32
Normal Range Notes: Some blood gas machines can analyse additional parameters such as lactate, Hb, potassium, calcium levels which would be helpful for decision making during emergencies Respiratory acidosis Features in ABGpH <7.35 + pCO2 >45 mmHg + HCO3- >30 mmol/L —–(i) Acute respiratory acidosis – For every 10 mmHg increase in pCO2, HCO3- will […]