556 results
Acid Base and Blood Gas Analysis
1. pH - What’s the primary disturbance?
2. pCO2 - What’s the
production Respiratory alkalosis ... Salicylates Metabolic Alkalosis ... - Contraction alkalosis ... nickmmark #acidbase #workup ... diagnosis #acidosis #alkalosis
Hypokalemia Differential Algorithm
Acidosis
 - RTA
 - Diarrhea
pH Normal 
 1. Decreased Mg 
 2. Intracellular Shift
Periodic paralysis Alkalosis ... Metabolic alkalosis ... Diagnosis #Causes #Workup
Primary Metabolic Alkalosis - Differential Diagnosis Algorithm
Volume Depleted 2° hyperaldosteronism
 • Low Urine Cl-: Vomiting, NGT
Primary Metabolic Alkalosis ... tumor • Low PRA: Adenoma ... Primary #Metabolic #Alkalosis
Approach to Acid Base Disorders - Evaluation and Differential Diagnosis
1) Start with the Anion Gap (AG).
2)
more acidotic or alkalotic ... • Metabolic Alkalosis ... • Respiratory Alkalosis ... Disorders #Evaluation #workup ... Diagnosis #acidosis #alkalosis
Primary Metabolic Alkalosis - Differential Diagnosis Algorithm
Volume Depleted - 2° hyperaldosteronism
 • Low Urine Cl-: Vomiting,
Primary Metabolic Alkalosis ... tumor • Low PRA: Adenoma ... aldosteronism #Metabolic #Alkalosis
Approach to Elevated Bicarbonate (HCO3)
Risk Factors for Hypercapnea? (Hx of COPD, OSA, sedative use, CNS/muscular disorders?)
(+)
Likely Metabolic Alkalosis ... Laxatives/Villous Adenoma ... Elevated #metabolic #alkalosis
Blood Gas Analysis and Interpretation
STEPS TO ANALYSIS
1. Look at PH. Alkalotic or acidotic?
Alkalotic or acidotic ... - If alkalotic, ... then it is an alkalosis ... respiratory component) - alkalotic ... metabolic component) - alkalotic
Arterial Blood Gas (ABG) Analysis - Metabolic + Respiratory Acidosis + Alkalosis

pH ↓ pCO2 ↓ -
Respiratory Acidosis + Alkalosis ... ↑ - Metabolic alkalosis ... - Respiratory alkalosis ... Compensation #acidosis #alkalosis
Benign Adrenal Mass - Differential Diagnosis Algorithm
Hyperplasia - Often Bilateral
 • Congenital Adrenal Hyperplasia
 • ACTH
Estrogen Releasing Adenoma ... Glucocorticoid Releasing Adenoma ... /- Hypokalemia/Alkalosis ... Aldosterone Releasing Adenoma
Acid-Base Disorders - Differential Diagnosis Framework

 • Respiratory Acidosis
 • Respiratory Alkalosis
 • Metabolic Acidosis
 •
• Respiratory Alkalosis ... • Metabolic Alkalosis ... diagnosis #acidosis #alkalosis