Atrial Blood Gas Analysis.

1. ABG ANALYSIS
Mohmmad Amil Rahman
S.R.
Dr. R.P.G.M.College Kangra at Tanda(H.P.)

2. ACID BASE
STATUS
OXYGENATIO
N
CO2
ELIMINATION
SATURATION
OF
HEMOGLOBIN
INFORMATION ABTAINED
FROM ABG ANALYSIS

3. INDICATIONS
• To assess ventilatory status and acid-base balance.
• Assess response to an intervention.
• Regulate electrolyte therapy.
• Establish preoperative baseline parameters.
• Sudden dyspnoea, cyanosis, abnormal breath
sounds, sudden or unexplained tachypnea.
• Diffuse infilterates in chest X- rays.

7. PROCEDURE
• SITE:- Radial artery is usually preferred because of
accessibility.
• Palpate with index and middle of non-dominant
hand.
• Clean in circular motion with antiseptic solution.
• Uncap syringe and hold like a pen with bevel facing
upwards.
• Insert the needle at 45˚ angle while palpating pulse
proximal to the puncture site, advance slowly.

8. • Once the needle enters the lumen of radial artery,
the arterial blood flow starts to fill the syringe.
• Remove the non-dominant hand.
• After 2-3 ml of arterial blood been obtained,
remove the needle.
• Apply firm occlusive local pressure at puncture site
for 15 minutes, or longer time in patients with
coagulopathy or on anticoagulant.
• Check for homeostasis, apply adhesive bandage
over puncture site.
• Eliminate air bubbles an analyze within 10 minutes.

38. REFERENCE RANGE
• pH  7.35-7.45
• HCO3 22-26 mmol/L
• pCo2 35-45 mmHg
• paO2 80-100 mmol/L
• O2 sat ≥ 95 %
• Base excess/deficit -2 to +2
• K  3.5-5 mmol/L
• Na  135-145 mmol/L
• Cl  97-106mmol/L

41. INTERPRETATION
IS IT ACIDOSIS OR ALKALOSIS
pH <7.35
ACIDOSIS
pH >7.45
ALKALOSIS

42. METABOLIC OR
RESPIRATORY
MORE
pCo2
Causes
ACIDOSIS
MORE
HCO3
Causes
ALKALOSIS

50. brought