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518 Section III / Subspecialty Surgery

 

What is the best way to

Urine output total per shift, THEN cc/kg/hr

present urine output

 

measurements on rounds?

 

What is the major difference between adult and pediatric nutritional needs?

What are the caloric requirements by age for the following patients:

Premature infants?

Children younger than 1 year?

Children ages 1 to 7?

Children ages 7 to 12?

Youths ages 12 to 18

What are the protein requirements by age for the following patients:

Children younger than 1 year?

Children ages 1 to 7?

Children ages 7 to 12?

Youths ages 12 to 18?

How many calories are in breast milk?

Premature infants/infants/children need more calories and protein/kg/day

80 Kcal/kg/day and then go up

100 Kcal/kg/day (90–120)

85 Kcal/kg/day (75–90)

70 Kcal/kg/day (60–75)

40 Kcal/kg/day (30–60)

3 g/kg/day (2–3.5)

2 g/kg/day (2–2.5)

2 g/kg/day

1.5 grams/kg/day

20 Kcal/30 cc (same as most formulas)

PEDIATRIC BLOOD VOLUMES

Give blood volume per

 

kilogram:

 

Newborn infant?

85 cc

Infant 1–3 months of age?

75 cc

Child?

70 cc

Chapter 67 / Pediatric Surgery 519

FETAL CIRCULATION

What is the number of

1 (usually)

umbilical veins?

 

What is the number of

2

umbilical arteries?

 

Which umbilical vessel

Umbilical vein

carries oxygenated blood?

 

The oxygenated blood travels

Ductus venosus

through the liver to the IVC

 

through which structure?

 

Oxygenated blood passes

Foramen ovale

from the right atrium to the

 

left atrium through which

 

structure?

 

Unsaturated blood goes

Ductus arteriosum

from the right ventricle to

 

the descending aorta

 

through which structure?

 

Define the overall fetal

 

circulation.

 

 

Carotid arteries

To arm

To arm

 

Ductus arteriosis

Lung

Lung

 

 

Foramen

Liver

ovale

 

Kidney

Placenta Gut

Femoral artery

Femoral artery

520 Section III / Subspecialty Surgery

 

What are the ADULT

 

structures of the following

 

fetal structures:

 

Ductus venosus?

Ligamentum venosum

Umbilical vein?

Ligamentum teres

Umbilical artery?

Medial umbilical ligament

Ductus arteriosus?

Ligamentum arteriosum

Urachus?

Median umbilical ligament

Tongue remnant of

Foramen cecum

thyroid’s descent?

 

Persistent remnant of

Meckel’s diverticulum

vitelline duct?

 

ECMO

 

 

 

What is ECMO?

ExtraCorporeal Membrane Oxygenation:

 

chronic cardiopulmonary bypass—for

 

complete respiratory support

What are the types of

Venovenous: Blood from vein S

ECMO?

oxygenated S back to vein

 

Venoarterial: Blood from vein (IJ) S

 

oxygenated S back to artery (carotid)

What are the indications?

Severe hypoxia, usually from congenital

 

diaphragmatic hernia, meconium

 

aspiration, persistent pulmonary

 

hypertension, sepsis

What are the

Weight 2 kg, IVH (IntraVentricular

contraindications?

Hemorrhage in brain contraindicated

 

because of heparin in line)

Chapter 67 / Pediatric Surgery 521

NECK

What is the major differential diagnosis of a pediatric neck mass?

THYROGLOSSAL DUCT CYST

Thyroglossal duct cyst (midline), branchial cleft cyst (lateral), lymphadenopathy, abscess, cystic hygroma, hemangioma, teratoma/dermoid cyst, thyroid nodule, lymphoma/leukemia (also parathyroid tumors, neuroblastoma, histiocytosis X, rhabdomyosarcoma, salivary gland tumors, neurofibroma)

What is it?

Remnant of the diverticulum formed

 

by migration of thyroid tissue; normal

 

development involves migration of

 

thyroid tissue from the foramen cecum at

 

the base of the tongue through the hyoid

 

bone to its final position around the

 

tracheal cartilage

What is the average age at Usually presents around 5 years of age diagnosis?

How is the diagnosis made?

Ultrasound

What are the complications? Enlargement, infection, and fistula formation between oropharynx or salivary gland; aberrant thyroid tissue may masquerade as thyroglossal duct cyst, and if it is not cystic, deserves a thyroid scan

522 Section III / Subspecialty Surgery

 

What is the anatomic

Almost always in the midline

location?

 

How can one remember the

Think: thyroGLOSSAL TONGUE

position of the thyroglossal

midline sticking out

duct cyst?

 

What is the treatment?

Antibiotics if infection is present, then

 

excision, which must include the midpor-

 

tion of the hyoid bone and entire tract to

 

foramen cecum (Sistrunk procedure)

BRANCHIAL CLEFT ANOMALIES

 

 

 

What is it?

Remnant of the primitive branchial clefts

 

in which epithelium forms a sinus tract

 

between the pharynx (second cleft), or

 

the external auditory canal (first cleft),

 

and the skin of the anterior neck; if the

 

sinus ends blindly, a cyst may form

What is the common

Infection because of communication

presentation?

between pharynx and external ear canal

What is the anatomic

Second cleft anomaly—lateral to the

position?

midline along anterior border of the

 

sternocleidomastoid, anywhere from

 

angle of jaw to clavicle

 

First cleft anomaly—less common than

 

second cleft anomalies; tend to be

 

located higher under the mandible

 

Chapter 67 / Pediatric Surgery 523

What is the most common

Second; thus, these are found most often

cleft remnant?

laterally versus thyroglossal cysts, which are

 

found centrally (Think: Second Superior)

What is the treatment?

Antibiotics if infection is present, then

 

surgical excision of cyst and tract once

 

inflammation is resolved

What is the major anatomic

Thyroglossal cyst midline

difference between

Branchial cleft cyst lateral

thyroglossal cyst and

(Think: brAnchial lAteral)

branchial cleft cyst?

 

STRIDOR

 

 

 

What is stridor?

Harsh, high-pitched sound heard on

 

breathing caused by obstruction of the

 

trachea or larynx

What are the signs/

Dyspnea, cyanosis, difficulty with

symptoms?

feedings

What is the differential

Laryngomalacia—leading cause of stridor

diagnosis?

in infants; results from inadequate

 

development of supporting laryngeal

 

structures; usually self-limited and

 

treatment is expectant unless

 

respiratory compromise is present

 

Tracheobronchomalacia—similar to

 

laryngomalacia, but involves the entire

 

trachea

 

Vascular rings and slings—abnormal

 

development or placement of thoracic

 

large vessels resulting in obstruction

 

of trachea/bronchus

What are the symptoms of

Stridor, dyspnea on exertion, or dysphagia

vascular rings?

 

How is the diagnosis of

Barium swallow revealing typical

vascular rings made?

configuration of esophageal

 

compression

 

Echo/arteriogram

What is the treatment of vascular rings?

Surgical division of the ring, if the patient is symptomatic

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