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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 ... Diagnosis #Nephrology #AcidBase
Prediction of Compensatory Responses on Simple Acid-Base Disturbances

#acidbase #compensation #metabolic #respiratory #diagnosis #calculations #formulas #acidosis #alkalosis
on Simple Acid-Base ... Disturbances #acidbase ... compensation #metabolic #respiratory ... #diagnosis #calculations ... #formulas #acidosis
Acid-Base Disorders - Differential Diagnosis Algorithm
Acidemia (pH < 7.35)
 • Metabolic Acidosis (HCO3 < 24mmol/L) CO2
Acid-Base Disorders ... - Differential ... Diagnosis Algorithm ... < 35 mmHg) #AcidBase ... #Causes #Compensation
Acid-Base Disorders - Expected Compensation Equations

Metabolic Acidosis:
 • pCO2 = 1.5 x HCO3 + 8 ±
Acid-Base Disorders ... ± 2 (Winter’s formula ... pCO2 ↑ 0.7 Respiratory ... ↓ 4 #Acid #Base ... #AcidBase #Disorders
Approach to Acid Base Disorders - Evaluation and Differential Diagnosis
1) Start with the Anion Gap (AG).
2)
Evaluation and Differential ... done by using formulas ... Differential Diagnosis ... retention • Respiratory ... Ventilation • Respiratory
Acid Base Disorders - Blood Gas Interpretation

Steps for Blood Gas Interpretation: 
1. Acidemia or Alkalemia? 
2.
Acid Base Disorders ... Differentials? ... MDaniyalHashmi1 #AcidBase ... bloodgas #Acid #Base ... #Gas #VBG #differential
Sensitivity is the proportion of truly diseased persons in the screened population who are identified as
correctly diagnose a case ... that any given case ... NegativePredictiveValue #Calculation ... Table #PPV #NPV #Formulas
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USMLE Epidemiology and Biostatistics Summary
Meta-Analysis: pools data from several studies (greater power), limited by quality/bias of
Case Control ( ... prove causation Case ... NPV Odds ratio (case ... Biostatistics #formulas ... #calculations #
Differential Diagnosis of Respiratory Acid-Base Disorders
Alkalosis
A. Central nervous system stimulation: Pain, Anxiety, psychosis, Fever, Cerebrovascular accident,
Differential Diagnosis ... Acid-Base Disorders ... #acidbase #acidosis ... #alkalosis #differential ... #diagnosis #causes
Fluid Responsiveness and Fluid Tolerance Testing - OnePager Summary
Fluid resuscitation can be beneficial when required or
(PPV) with the respiratory ... using proprietary formulas ... cardiac output causes ... high degree of respiratory ... to the central circulation