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71 Cards in this Set
- Front
- Back
Fetal lung tissue doesn't exist until after how many weeks ? |
25 weeks |
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What ratio do you use to asses fetal lung maturity |
Lecithin to sphingomylein (l/s ratio) |
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How do you determine Lecithin to sphingomylein (l/s ratio) |
Amniocentesis , lab findings indicate the levels of Lecithin to sphingomylein within the amniotic fluid |
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Normally as the lung mature the level of what decreases and the level of what increases the single mok |
Lecithin increases and sphingomylein deceases |
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The single most important determinant for fetal viability |
The adequacy of pulmonary development |
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Pulmonary immaturity is the major reason why fetuses younger than 24 weeks gestation usually are considered |
Nonviable |
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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 |
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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 |
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A hypoechoic muscular margin between the fetal liver or spleen and the lungs |
Diaphragm |
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Is the thorax smaller than the abdominal cavity |
Yes |
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If oligohydraminos is presence in the thoracic cavity what happens |
Reduction of the overall thoracic size |
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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 |
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Under development of the lungs, is caused by decreased number of lung cells, airways and alveolis is |
Hypoplastic long/pulmonary hypoplasia |
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The most common lesion occupies a chess resulting in pulmonary hypoplasia is what |
Diaphragmatic hernia |
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Prognosis for infants with pulmonary hypoplasia |
80% die after birth has poor prognosis |
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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 |
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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 |
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Possible causes may be classified as the following for pulmonary hypoplasia regarding Intrathoracic masses |
1. Intrathoracic masses -Pleural effusion -Mediastinal teratoma -Pulmonary cyst |
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Possible causes may be classified as the following for pulmonary hypoplasia (3) |
A domino mass fact, oligohydramnios, skeletal dysplasia |
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Ultrasound appearance for pulmonary hypoplasia |
Small thoracic circumference at the level of four chamber heart view/may be associated with thanatophoric dwarfism |
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Most common lung cyst detected prenatally |
Bronchogenic cyst |
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Appearance of Bronchogenic cyst |
Appears as a cyst in the lung |
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When the cyst have been detected for the Bronchogenic cyst appear as what in the fetal chest |
You need unilocular and multiloculated |
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Accumulation of fluid in the plural cavity |
Pleural effusion |
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Most common fetal the thoracic abnormality is what |
Pleural effusion/hydrothorax |
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Hydrops , heart failure, chromosomal abnormality's, infection, severe diabetes or all commonly seen with |
Hydrothorax/ plural effusion |
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Apesrences of pleural effusion when it has a bilateral appearance |
Bat wing effect |
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Treatment for pleural effusion |
Ultrasound guided thoracentesis |
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Appearance of pleural effusion on Us |
Anechoic areas and one or both sides of the chest |
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In severe cases of pleural effusion what happens to the lungs and heart |
Lungs compress and displacement of the heart |
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Other names for pulmonary sequestration |
Brachial pulmonary sequestration/accessory long |
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A benign mass of nonfunctioning lung tissue is |
Pulmonary sequestration |
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Pulmonary sequestration is divided in what two ways |
Extrapulmonary/intrapulmonary |
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Other names for Extrapulmonary and intrapulmonary |
Extra lobar sequestration and interlobar sequestration |
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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 |
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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 |
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Most common type of BPS is what and the removal of BPS is performed when |
Intrapulmonary am removal is performed after birth |
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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 |
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Recently termed congenital pulmonary adenomatoid malformation that is extremely rare |
Congenital cystic adenomatoid malformation |
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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) |
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with Congenital cystic adenomatoid malformation The lung is replaced by what |
A non-working cystic area |
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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 |
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Three types of Congenital cystic adenomatoid malformation |
-Macrocystic -smaller to medium cyst -Microcystic |
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Is Macrocystic type one single/multiple and what is the size |
Both and the size is >2-10cm |
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Most common type of Congenital cystic adenomatoid malformation |
Type one Macrocystic |
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Size for type two (smaller -medium sized cyst ) are they uniform or irregular |
.5-2cm in diameter and the are uniform in size |
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Size for type three (microcystic) /how to they appear as |
.3-.5mm / they appear as multiple very small cyst |
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Most severe form of Congenital cystic adenomatoid malformation |
Type three (microcystic ) |
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Congenital cystic adenomatoid malformation is associated with |
Fetal hydrops / renal malformation / GI malformation / cardiac malformation |
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Type one and two for Congenital cystic adenomatoid malformation appear as |
Cystic and polyhydramnios |
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Type three for Congenital cystic adenomatoid malformation appear as |
Echogenic and polyhydramnios |
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In normal fetus the diaphragm should appear as a |
Curvilinear structure |
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The normal fetal stomach and liver should be identified caudal to |
The diaphragm , with the lungs and heart positioned cephalad |
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Protusion of abdominal contents into thorax through a defect in the diaphragm is |
Congenital diaphragm hernia |
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Cause of Congenital diaphragm hernia |
Opening in the diaphragm |
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Common on what side and common in whom(Congenital diaphragm hernia ) |
Left side and common in males |
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Most common reason for fetal cardiac malposition |
The existence of Congenital diaphragmatic hernia |
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Incidence of Congenital diaphragmatic hernia |
1 in every 2,000-4,000 live births |
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Mortality of Congenital diaphragmatic hernia |
50-80% due to pulmonary hypoplasia |
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Two types of Congenital diaphragmatic hernia |
Bochdalek hernia / morgagni hernia |
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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 |
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Anterolateral/ located on the right side and maybe difficult to diagnose given similar echogenicity of the lungs and fetal liver |
Morgagni hernia |
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How is the prognosis and when is it detected Congenital diaphragmatic hernia |
Poor prognosis and is detected at birth |
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Primary cause of death for Congenital diaphragmatic hernia is |
Pulmonary hypoplasia |
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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 |
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Identifying the liver in the abdomen is a good prognosis for |
Congenital diaphragmatic hernia |
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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 |
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Small AC/bell in chest/pulmonary hypoplasia/hypoechoic diaphragmatic line is broken/ Polyhydromnios is associated with |
Congenital diaphragmatic hernia |
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One differential diagnosis of Congenital diaphragmatic hernia is |
Eventration of the diaphragm , which is a lack of muscle in the dome of the diaphragm |
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Eventration of the diaphragm is a disorder of the |
Diaphragmatic muscle is replaced by fibroelastic tissue |
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Eventration of the diaphragm will have similar sono appearance to what making it hard to view |
Diaphragmatic hernia |