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71 Cards in this Set

  • Front
  • Back

Fetal lung tissue doesn't exist until after how many weeks ?

25 weeks

What ratio do you use to asses fetal lung maturity

Lecithin to sphingomylein (l/s ratio)

How do you determine Lecithin to sphingomylein (l/s ratio)

Amniocentesis , lab findings indicate the levels of


Lecithin to sphingomylein within the amniotic fluid

Normally as the lung mature the level of what decreases and the level of what increases the single mok

Lecithin increases and sphingomylein deceases

The single most important determinant for fetal viability

The adequacy of pulmonary development

Pulmonary immaturity is the major reason why fetuses younger than 24 weeks gestation usually are considered

Nonviable

Upper margin /lateral margin and lower margin of the thoracic cavity ? Normal appearance of thoracic cavity ?

Clavicles / ribs / diaphragm and normal shape is symmetrically bell shape

Lungs in early gestation are going to be hypo or hyper compared liver and lungs in later gestation are going to be hypo or hyper compared to lungs

Early -hypo


Later -hyper

A hypoechoic muscular margin between the fetal liver or spleen and the lungs

Diaphragm

Is the thorax smaller than the abdominal cavity

Yes

If oligohydraminos is presence in the thoracic cavity what happens

Reduction of the overall thoracic size

Chest circumference measurements are made in what plane at and what level of the heart

Transverse plane and at the level of the four chamber view of the heart

Under development of the lungs, is caused by decreased number of lung cells, airways and alveolis is

Hypoplastic long/pulmonary hypoplasia

The most common lesion occupies a chess resulting in pulmonary hypoplasia is what

Diaphragmatic hernia

Prognosis for infants with pulmonary hypoplasia

80% die after birth has poor prognosis

Since amniotic fluid plays in important role in the development of the fetal lungs what results in an increase for pulmonary hypoplasia

Surrounded by little or no amniotic fluid results from findings with oligohydraminos

What two other abnormalities are associated with hypoplastic long/pulmonary hypoplasia

Bilateral renal a genesis and the abnormal facial features in the condition known as potter syndrome

Possible causes may be classified as the following for pulmonary hypoplasia regarding Intrathoracic masses

1. Intrathoracic masses


-Pleural effusion


-Mediastinal teratoma


-Pulmonary cyst

Possible causes may be classified as the following for pulmonary hypoplasia (3)

A domino mass fact, oligohydramnios, skeletal dysplasia

Ultrasound appearance for pulmonary hypoplasia

Small thoracic circumference at the level of four chamber heart view/may be associated with thanatophoric dwarfism

Most common lung cyst detected prenatally

Bronchogenic cyst

Appearance of Bronchogenic cyst

Appears as a cyst in the lung

When the cyst have been detected for the Bronchogenic cyst appear as what in the fetal chest

You need unilocular and multiloculated

Accumulation of fluid in the plural cavity

Pleural effusion

Most common fetal the thoracic abnormality is what

Pleural effusion/hydrothorax

Hydrops , heart failure, chromosomal abnormality's, infection, severe diabetes or all commonly seen with

Hydrothorax/ plural effusion

Apesrences of pleural effusion when it has a bilateral appearance

Bat wing effect

Treatment for pleural effusion

Ultrasound guided thoracentesis

Appearance of pleural effusion on Us

Anechoic areas and one or both sides of the chest

In severe cases of pleural effusion what happens to the lungs and heart

Lungs compress and displacement of the heart

Other names for pulmonary sequestration

Brachial pulmonary sequestration/accessory long

A benign mass of nonfunctioning lung tissue is

Pulmonary sequestration

Pulmonary sequestration is divided in what two ways

Extrapulmonary/intrapulmonary

Other names for Extrapulmonary and intrapulmonary

Extra lobar sequestration and interlobar sequestration

Out of Extrapulmonary/intrapulmonary which one has lesions that have no connection with the airway and receives its blood supply from the systematic circulation usually off the abdominal or thoracic aorta and appear next to the lung

Extrapulmonary

Out of Extrapulmonary/intrapulmonary which one appears with in one part of the lung which is surrounded by normal lung tissue and the prognosis is favorable

Intrapulmonary

Most common type of BPS is what and the removal of BPS is performed when

Intrapulmonary am removal is performed after birth

Appearance of pulmonary sequestration, it's more common on side and what type of fluid is associated with it

Homogeneous echogenic appearing solid mass/ common on the lower left side of the lung and polyhydramnios is associated with it

Recently termed congenital pulmonary adenomatoid malformation that is extremely rare

Congenital cystic adenomatoid malformation

The Uni lateral and may resolve spontaneously all the large masses can lead to fetal hydrops in Carry a poor prognosis is

Congenital cystic adenomatoid malformation (CCAM)

with Congenital cystic adenomatoid malformation The lung is replaced by what

A non-working cystic area

What is the cause and who is it more common in for Congenital cystic adenomatoid malformation

Causes unknown and slightly more common in males than females

Three types of Congenital cystic adenomatoid malformation

-Macrocystic


-smaller to medium cyst


-Microcystic

Is Macrocystic type one single/multiple and what is the size

Both and the size is >2-10cm

Most common type of Congenital cystic adenomatoid malformation

Type one Macrocystic

Size for type two (smaller -medium sized cyst ) are they uniform or irregular

.5-2cm in diameter and the are uniform in size

Size for type three (microcystic) /how to they appear as

.3-.5mm / they appear as multiple very small cyst

Most severe form of Congenital cystic adenomatoid malformation

Type three (microcystic )

Congenital cystic adenomatoid malformation is associated with

Fetal hydrops / renal malformation / GI malformation / cardiac malformation

Type one and two for Congenital cystic adenomatoid malformation appear as

Cystic and polyhydramnios

Type three for Congenital cystic adenomatoid malformation appear as

Echogenic and polyhydramnios

In normal fetus the diaphragm should appear as a

Curvilinear structure

The normal fetal stomach and liver should be identified caudal to

The diaphragm , with the lungs and heart positioned cephalad

Protusion of abdominal contents into thorax through a defect in the diaphragm is

Congenital diaphragm hernia

Cause of Congenital diaphragm hernia

Opening in the diaphragm

Common on what side and common in whom(Congenital diaphragm hernia )

Left side and common in males

Most common reason for fetal cardiac malposition

The existence of Congenital diaphragmatic hernia

Incidence of Congenital diaphragmatic hernia

1 in every 2,000-4,000 live births

Mortality of Congenital diaphragmatic hernia

50-80% due to pulmonary hypoplasia

Two types of Congenital diaphragmatic hernia

Bochdalek hernia / morgagni hernia

Posterolateral/ common on the left side it's the most common hernia and in most cases the stomach, bowel and the left lobe of the liver are found within the chest

Bochdalek hernia

Anterolateral/ located on the right side and maybe difficult to diagnose given similar echogenicity of the lungs and fetal liver

Morgagni hernia

How is the prognosis and when is it detected Congenital diaphragmatic hernia

Poor prognosis and is detected at birth

Primary cause of death for Congenital diaphragmatic hernia is

Pulmonary hypoplasia

If the presence of the stomach is found in the chest, especially if it is dilated, left heart is under developed and is congenital heart disease is present what may be a disease for this

Congenital diaphragmatic hernia

Identifying the liver in the abdomen is a good prognosis for

Congenital diaphragmatic hernia

Hernias are usually found on which side of the diaphragm and what enters the chest through the opening

Usually found on the left side and the left side and organs(stomach, spleen and portions of liver ) enter through the chest

Small AC/bell in chest/pulmonary hypoplasia/hypoechoic diaphragmatic line is broken/ Polyhydromnios is associated with

Congenital diaphragmatic hernia

One differential diagnosis of Congenital diaphragmatic hernia is

Eventration of the diaphragm , which is a lack of muscle in the dome of the diaphragm

Eventration of the diaphragm is a disorder of the

Diaphragmatic muscle is replaced by fibroelastic tissue

Eventration of the diaphragm will have similar sono appearance to what making it hard to view

Diaphragmatic hernia