Algorithm Narrow-complex Tachy
Showing posts with label Note. Show all posts
Showing posts with label Note. Show all posts
Saturday, January 15, 2011
Friday, January 14, 2011
Arterial Blood Gas Sampling Demonstration : Emergency Learning
ABG : Normal Values
pH 7.35 - 7.45
PaCO2 35-45 mm Hg
PaO2 80-100 mm Hg
TCO2 22-32 mmol/l
aHCO3- 22-26 mmol/l
sHCO3- 22-26 mmol/l
aBE +2 mmol/l
sBE +2 mmol/l
SaO2 95-98%
Arterial Blood Gas Sampling Demonstration : Emergency Learning
Arterial Blood Gases [ABG] : Emergency Learning
Part 1 ABG Learning
Definitions
pH
Negative log of Hydrogen ion activity
pH = -log [H+]
PaO2
The partial pressure of Oxygen in the gas phase in equilibrium with the arterial blood
PaCO2
The partial pressure of Carbon Dioxide in the gas phase in equilibrium with the arterial blood
HCO3
Concentration of bicarbonate in the plasma calculated from the pH and PCO2 using the Henderson-Hasselbach equation
Standard bicarbonate
Plasma [HCO3-] present in a blood sample, fully oxygenated at 38oC and equilibrated in vitro with PCO2 40 mmHg.
It is the plasma [HCO3-] after elimination of respiratory component and is an index of degree of metabolic alkalosis or acidosis
Buffer Base
Total amount of all the conjugate bases in 1L of arterial blood which can accept H+ in the blood.
Hb-/HbO2- = 9 mmol/L
HCO3- = 24 mmol/L
Protein = 15 mmol/L
TOTAL = 48 mmol/L
A mixed disorder
Two or more primary acid-base abnormalities coexist
Compensation
Refers to normal body processes tending to return arterial pH back to normal (Respiratory or Renal)
Video Take ABG
Wednesday, January 12, 2011
Shock : Emergency Learning : Note
Definition of Shock:
Shock is a clinical syndrome which occurs
when there is an abnormality of the circulatory
system that results in inadequate organ perfusion
and tissue oxygenation.
Types of shock
1. Hypovolaemic
2. Cardiogenic – AMI,Cardiomyopathy
3. Distributive
Neurogenic
Septic
Anaphylactic
4. Obstructive – T.P/thorax,C.Tamponade
HYPOVOLAEMIC SHOCK
Most common cause of shock in the trauma
patient
Haemorrhage is defined as an acute loss of
circulating blood volume
Normal blood volume in adult : 7% of body weight
Normal blood volume in child. : 80mls/kg
Shock is a clinical syndrome which occurs
when there is an abnormality of the circulatory
system that results in inadequate organ perfusion
and tissue oxygenation.
Types of shock
1. Hypovolaemic
2. Cardiogenic – AMI,Cardiomyopathy
3. Distributive
Neurogenic
Septic
Anaphylactic
4. Obstructive – T.P/thorax,C.Tamponade
HYPOVOLAEMIC SHOCK
Most common cause of shock in the trauma
patient
Haemorrhage is defined as an acute loss of
circulating blood volume
Normal blood volume in adult : 7% of body weight
Normal blood volume in child. : 80mls/kg
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