37 results
Acid Base Disorders - Blood Gas Interpretation

Steps for Blood Gas Interpretation: 
1. Acidemia or Alkalemia? 
2.
Acid Base Disorders ... Acute or chronic ... Metabolic: pH pCO2 ... Compensation, Acute ... MDaniyalHashmi1 #AcidBase
Acid-Base Disorders - Differential Diagnosis Algorithm
Acidemia (pH < 7.35)
 • Metabolic Acidosis (HCO3 < 24mmol/L) CO2
Acid-Base Disorders ... Respiratory Acidosis (pCO2 ... Respiratory Alkalosis (pCO2 ... < 35 mmHg) #AcidBase ... Diagnosis #Algorithm #Causes
Acid Base Compensation - Directions - If all three variables (pH, HCO2, pCO2) move in the
Acid Base Compensation ... variables (pH, HCO2 ... , pCO2) move in ... Diagnosis #Nephro #AcidBase
PLACO Mnemonic - Approach to Acid-Base Disorders
P - Determine the pH
L - Labs: PCO2 & HCO3
A
- Approach to Acid-Base ... pH L - Labs: PCO2 ... jadav_md #PLACO #AcidBase ... #Acid #Base #diagnosis
Acid Base and Blood Gas Analysis
1. pH - What’s the primary disturbance?
2. pCO2 - What’s the
Acid Base and Blood ... 2. pCO2 - What’s ... the pCO2? ... Medications, Central, ↑ CO2 ... MD @nickmmark #acidbase
Acid-Base Disorders - Expected Compensation Equations

Metabolic Acidosis:
 • pCO2 = 1.5 x HCO3 + 8 ±
Acid-Base Disorders ... Acidosis: • Acute ... Alkalosis: • Acute ... ∆ HCO3 ↓ 4 #Acid ... #Base #AcidBase
Blood Gas (ABG) Interpretation and Acid-Base Pathology
1- Does the patient have an acidosis or an alkalosis?
Interpretation and Acid-Base ... Look at the pCO2 ... Metabolic Equal (If pCO2 ... the change in pCO2 ... MSc @AmyChung #AcidBase
Hyperuricemia - Differential Diagnosis Algorithm
Primary - Over-production
     • Increased turnover of nucleotides
Primary
• Lower uric acid ... Disorders • Acute ... (ALL) • Acute ... • Organic acids ... endocrinology #causes
#ICUCard
RENAL
GFR
90-131
mL/min
((140-age)*Wt)/(72*Cr)
Glomerular Filtration Rate (Cockcroft)
CI Cr
90-131
mL/min
(CrU * volume)/CrS
Creatinine Clearance
FENa
0.0-1.0
%
((U/P Na)/(U/P Cr))*100
Fractional Excretion of Na+
Na req
mEq
(125-Na)*0.6*Wt
Required Sodium
FE Urea
H_def 0 mEq Acid ... ТРСО2 → Тнсоз acute ... → ІнСО3 acute: ... )/HCO3 Acid base ... > 50mmHg (acute
Approach to Acid Base Disorders - Evaluation and Differential Diagnosis
1) Start with the Anion Gap (AG).
2)
Approach to Acid ... Generally, for acid ... and ~5 mmHg to pCO2 ... the chronicity (acute ... , chronic, or acute