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Acid Base Disorders - Formulas for appropriate metabolic and respiratory compensation

- Dr Amith Sreedharan - Consultant
Acid Base Disorders ... - Formulas for ... metabolic and respiratory ... compensation ... #Formula #Winters
Summary of metabolic compensation for respiratory acid-base disorders
#Diagnosis #Nephro #Respiratory #Acidosis #Alkalosis #Metabolic #Compensation #Formulas #Curbsiders
Summary of metabolic compensation ... for respiratory ... acid-base disorders ... Diagnosis #Nephro #Respiratory ... #Formulas #Curbsiders
To improve the usefulness of the serum creatinine concentration as a marker of kidney function, prediction
predict GFR, these formulas ... commonly used formulas ... are shown in Table ... Neither formula ... #Calculation #Formulas
Acid-Base Disorders - Expected Compensation Equations

Metabolic Acidosis:
 • pCO2 = 1.5 x HCO3 + 8 ±
Acid-Base Disorders ... - Expected Compensation ... Equations Metabolic ... ± 2 (Winter’s formula ... ↓ 4 #Acid #Base
Prediction of Compensatory Responses on Simple Acid-Base Disturbances

#acidbase #compensation #metabolic #respiratory #diagnosis #calculations #formulas #acidosis #alkalosis
on Simple Acid-Base ... #acidbase #compensation ... #metabolic #respiratory ... #calculations #formulas
Table 1. Equations for estimated glomerular filtration rate (eGFR) in adults based on serum creatinine concentration*.
#Diagnosis
Table 1. ... Equations for estimated ... eGFR) in adults based ... CockcroftGault #EGFR #Equations ... #Calculation #Formulas
Acid-Base Disorders - Differential Diagnosis Algorithm
Acidemia (pH < 7.35)
 • Metabolic Acidosis (HCO3 < 24mmol/L) CO2
Acid-Base Disorders ... Differential Diagnosis Algorithm ... HCO3 12:10 • Respiratory ... HCO3 7:10 • Respiratory ... #Causes #Compensation
Approach to Acid Base Disorders - Evaluation and Differential Diagnosis
1) Start with the Anion Gap (AG).
2)
Approach to Acid Base ... the appropriate compensation ... done by using formulas ... retention • Respiratory ... Ventilation • Respiratory
Sensitivity is the proportion of truly diseased persons in the screened population who are identified as
correctly diagnose a case ... that any given case ... implies being able ... #Calculation #Table ... #PPV #NPV #Formulas
Perform computations online at:
ScyMed.com
6th ED
ICU-card
«ICU, Formulas & Drugs»
HEMODYNAMIC PATTERNS
Condition
SAP
CVP

PAP PCWP

CO C(a-v)02 PVR

SVR
Hypovolemic shock
↓
↓
↓
↓
↓
↑
↑
↑
Cardiogenic shock
↓
1
↑
1

1
↑

Septic shock
↓
↓
↓
↓
↑
↓
↓
↓
Cardiac Tamponade
.
↑
↑
1
↓

→
↑
RV
ICU-card «ICU, Formulas ... values units equation ... min 400-600 mL Respiratory ... = >60% Forced Espiratory ... ratio Respiratory