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RESPIRATORY DISTRESS SYNDROME a.k.a
HYALINE MEMBRANE DISEASE
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RESPIRATORY DISTRESS SYNDROME a.k.a
HYALINE MEMBRANE DISEASE
(incidence related to degree of prematurity)
VENTILATION
1) Intrapleural pressure (subatmospheric = 756mmHg)
2) Intraalveolar pressure (atmospheric = 760mmHg)
3) Atmospheric pressure (760mmHg)
4) Transpulmonary pressure ( Intraalveolar - Intrapleural)
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thin,transparent skin,cyanosed
1.Cyanosis
Cyanosis is the dusk and blueness of the skin and mucous membrane resulted from the diminished pulmonary blood flow and poorly oxygenated blood enter systemic circulation
Central cyanosis
central cyanosis normally due to poor blood oxygenated in lung which will see in lip and tougue.Causes of central cyanosis
1)cardiac cause
==5T (transposition of great vessel,TOF,truncus arteriosus,TAPVR,tricuspid atresia
2)respiratory cause
==hyaline membrane disease,pneumonia,pleural effusion
3)CNS cause
==hypoxic ischemia,encephalopathy,seizure
4)miscellanous
==polycythemia,hyperglycemiaperipheral cyanosis
==normally is due to obstructed and inadequate blood circulation which will see in lip and tonguecauses of peripheral cyanosis
1)all causes of central cyanosis
2)decreased pumping of heart,reduce cardiac output
3)thrombosis and embolism
4)constriction of blood vessel of limb,fingers and toes
==raynaud phenomenondifferent between central and peripheral cyanosis
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ABG investigation
1)Respiratory alkolosis
-pH high
-PaCO2 low
-HCO3 may be low if compensated
2)Metabolic alkolosis
-pH high
-HCO3 high
-PaCO3 may be high if compensated
3)Respiratory acidosis
-pH low
-PaCO3 high
-HCO3 maybe high if compensated
4)Metabolic acidosis
-pH low
-HCO3 low
-PaCO3 may be low if compensated
Conclusion: the patient has respiratory acidosis
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