4. INTRODUCTION;
• Severe life threatening form of progressive
respiratory insufficiency.
• Involves pulmonary tissue diffusely
• Exists in 2 forms :neonatal and adult type
• Formation of hyaline membrane in alveoli
• Hence, termed as hyaline membrane
disease(HMD).
• Two forms have different clinical settings ,
response, consequences, etiology, pathogenesis
but similar morphology.