Esophagus Flashcards

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1
Q

Narrowest portion of GIT

A

Pharyngoesophageal junction

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2
Q

Diaphragmatic openings

A

T8- IVC, Phrenic nerve
T10- esophagus, vagus nerve, left gastric artery
T12- aorta, thoracic duct
REMEMBER I8 10 eggs at 12

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3
Q

What should be done if a foreign body gets impacted in esophagus ?

A

Endoscopic removal

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4
Q

Most common site for iatrogenic perforation in esophagus?

A

C6- narrowest- pharyngoesophageal junction

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5
Q

What type of blood supply does esophagus receive? Which artery is involved in Mallory Weiss tear?

A

Segmental supply. Left gastric artery.

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6
Q

Upper 3rd of esophagus blood supply

A

Inferior thyroid artery and vein.

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7
Q

Middle 3rd esophagus blood supply

A

Descending thoracic aorta, bronchial artery. Azygos vein

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8
Q

Lower 3rd esophagus blood supply

A

Left gastric artery and vein ( coronary vein). Vein drains into portal vein to liver. Mets from eso to liver.

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9
Q

Type of mets in esophageal carcinoma

A

Lymphatic- longitudinal, skip mets

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10
Q

Based on nature of sphincter, how are upper and lower esophagus sphincters different?

A

Upper- both anat, physio entity (narrowing, high pressure)
Lower- only physio 8-25 mm hg

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11
Q

How does the LES act when food enters the esophagus ?

A

Les is tonic, relaxes when food enters and contracts again.

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12
Q

What happens les relaxes frequently or fails to relax?

A

Relaxes too frequently- GERD
Fails to relax- achalasia cardia

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13
Q

Which layer does the esophagus lack? Which is the strongest layer?

A

Serosa , submucosa

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14
Q

Types of peristalsis in esophagus

A

Primary- propulsive wave pushes food down
Secondary- if primary can’t push, propulsive secondary peristaltic wave formed
Tertiary- non propulsive, in between meals.

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15
Q

Condition where tertiary peristalsis is too frequent

A

Presbyoesophagus

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16
Q

Types of TEF

A

5- a,b,c,d,e

17
Q

MC and LC tef

A

Mc- type C, LC- type D

18
Q

Case- newborn presents with dribbling of saliva, respiratory distress, on inserting an orogastric tube, it coils. Diagnosis? IOC? Confirmatory test?

A

TEF. IOC- for H type- combined tracheo esophagoscopy.
Confirmed by contrast study- iohexol > dinosil> barium

19
Q

DD for congenital anomalies

A

VACTERL
V- Vertebral defects
A- anorectal malformations
C- cardiac defects
TE- TEF
R- Renal genesis
L- Limb defects

20
Q

Which criteria is used for TEF management?

A

Watersons criteria-
Birth weight and presence of pneumonia

21
Q

Surgery done done TEF

A

Posterolateral thoracotomy

22
Q

Surgery done for TEF types b,c,d,e

A

Cameron haight surgery
Cut fistula- repair trachea- anastomose esophagus

23
Q

How do u manage type A TEF ?

A

Flourish device, anastomosis

24
Q

What’s the most important factor in maintaining LES tone in preventing reflux? Other factors?

A

Length of intrabdominal esophagus 3-5 cm
Others- angle of His, pinching effect of right crura, arrangement of gastric folds

25
Q

Length- when gerd develops ?

A

<2cm and pressure< 6 mm hg. Increased TLOSR

26
Q

GERD IOC and gold standard

A

IOC- endoscopy, gold standard- 24 hr ph monitoring

27
Q

Which score suggests GERD after ph monitoring?
Any wireless method to do this?

A

Demeester score of >14.7 .
Bravo 24

28
Q

What are the indications for surgery in GERD?

A

Fails medical therapy.
Complications like Barrett! Cancer, stricture
Associated with hiatal hernia

29
Q

Surgery done in GERD?

A

Fundoplication. Shoe sign manoeuver.

30
Q

Types of wraps in fundoplication

A

Partial - Dor, Toupet, Belsey mark
Complete- Nissen