What Is the Primary Cause of RDS in the Newborn

question 18

Multiple Choice

What is the primary cause of RDS in the newborn?

• A) Underdevelopment of alveolar type I cells
• B) Deficiency or abnormality of pulmonary surfactant
• C) Hypoxia causing pulmonary hypoperfusion
• D) Excessive amniotic fluid in the lungs

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Definitions:

Metamorphic Conditions

Conditions involving high temperature and pressure that cause changes in the mineralogy, texture, and chemical composition of rocks.

Shear Zones

Regions of intense deformation in the crust where rocks have been subjected to shear stress, leading to displacement and alteration.

Igneous Intrusions

Igneous intrusions are formations created when molten rock from the Earth's interior cools and solidifies beneath the surface, disrupting the preexisting strata.

Foliation

The repetitive layering in metamorphic rocks caused by the reorientation of minerals under directed pressure.