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Persistent Pulmonary Hypertension (PPHN) Quiz

5 Questions

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Persistent Pulmonary Hypertension (PPHN) Quiz

Created by

@ConsiderateAwareness

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Questions and Answers

Which of the following contributes to the persistence of the fetal circulatory pattern in Persistent Pulmonary Hypertension (PPHN)?

Reduced pulmonary artery medial muscle thickness

Excessively high pulmonary vascular resistance (PVR) (correct)

Low postnatal PaO2

Decreased pH in the postnatal period

In PPHN, what does the PaO2 or oxygen saturation gradient between preductal and post-ductal sites of blood sampling suggest?

Left-to-right shunting through the foramen ovale

Obstruction in the pulmonary artery

Right-to-left shunting through the ductus arteriosus (correct)

Normal pulmonary circulation

What is the consequence of chronic fetal hypoxia in the pathogenesis of PPHN?

Increased pulmonary artery medial muscle thickness (correct)

Normalization of pulmonary vascular resistance

Reduction in PaCO2 levels

Decreased smooth muscle extension into peripheral pulmonary arterioles

What is helpful in diagnosing PPHN?

<p>2D echo with Doppler</p> Signup and view all the answers

Which condition is associated with obstructive PPHN?

<p>Total Anomalous Pulmonary Venous Return (TAPVR)</p> Signup and view all the answers

Study Notes

Persistence of Fetal Circulatory Pattern in PPHN

Hypoxia and acidosis contribute to the persistence of the fetal circulatory pattern in Persistent Pulmonary Hypertension (PPHN)

Diagnosis of PPHN

A PaO2 or oxygen saturation gradient between preductal and post-ductal sites of blood sampling suggests right-to-left shunting and diagnoses PPHN
Chronic fetal hypoxia is a consequence in the pathogenesis of PPHN

Associated Conditions

Meconium aspiration syndrome is associated with obstructive PPHN

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Description

Test your knowledge of Persistent Pulmonary Hypertension (PPHN) with this quiz. Explore the pathogenesis, right-to-left shunting, PVR dynamics, and factors influencing PVR decline in neonates.