63 results
diagnosis differential nephrology algorithm causes hyponatremia management sodium dka endocrinology ketoacidosis diabetes diabetic hypernatremia table clinical pathophysiology pyuria workup atrial
Urine chemistry tests for the diagnostic evaluation of a patient with polyuria UOsm <100 mOsm/Kg (H2O diuresis)
a patient with polyuria ... UOsm <100 mOsm ... 2 × (Na + K) = UOsm ... × (Na + K) << UOsm ... - Mannitol #polyuria
Causes of Polyuria - Differential Diagnosis Algorithm Polyuria - Urine Output > 3L/day, Increased Urine Volume (>2ml/min) Osmotic
Causes of Polyuria ... Diagnosis Algorithm Polyuria ... Loss - DDAVP -> Uosm ... Insipidus - DDAVP -> Uosm ... Insipidus #Polyuria
Polyuria - Differential Diagnosis Algorithm Urine Output > 3L /day Water Diuresis (Urine Osm <100 mOsm/kg) • Primary
Polyuria - Differential ... Diuresis (Urine Osm ... <100 mOsm/kg) ... 100-200 mOsm/kg ... solute load #Polyuria
Hyponatremia Diagnosis Algorithm UOsm ≥ POsm - Vasopressin-Dependent • UNa < 20 mEq/L - Appropriate (↓ EABV)
Diagnosis Algorithm UOsm ... ≥ POsm - Vasopressin-Dependent ... Cortisol deficiency UOsm ... < POsm - Vasopressin-independent
Polyuria - Differential Diagnosis Algorithm Polyuria = >3L Urine output / 24 hours Urine osmolality = 2 (Na
Polyuria - Differential ... Diagnosis Algorithm Polyuria ... osmolality > 300 mosm ... osmolality < 100 mosm ... Primary Polydipsia #Polyuria
Hypo-osmolar Hypotonic HypoNatremia Algorithm (Serum Na+ < 135 meq/L, serum Osm < 275 mosm/kg) Assess Volume Status,
135 meq/L, serum Osm ... < 275 mosm/kg) ... Urine Na, Urine Osm
Hyponatremia - Diagnostic Evaluation Algorithm Step 1: Consider whether Posm may actually be normal or elevated Step 2:
Consider whether Posm ... Step 2: Check Uosm
Causes of Frequency, Nocturia, Polyuria #Frequency #Nocturia #Polyuria #Causes #Differential #Urology #Table
Frequency, Nocturia, Polyuria ... Frequency #Nocturia #Polyuria
Central vs Nephrogenic Diabetes Insipidus - Desmopressin Challenge Give desmopressin (intranasal, SQ, IV) and monitor UOsm every
IV) and monitor UOsm ... • No Rise in UOsm ... < 45% rise in UOsm ... 15-50% rise in UOsm ... CDI • Rise in UOsm
Physiologic Approach to Hypotonic Hyponatremia The next time you have a case of hypotonic hyponatremia, give the
• ADH Present (Uosm ... be high or low Uosm ... ADH Not Present (Uosm ... • ADH Present (Uosm ... ADH Not Present (Uosm
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