Surgical Anatomy, Colic surgery Flashcards

1
Q

Indications of SI surgery

A

Persistent pain

US hows distension and edema

After failed stbilisation methods

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2
Q

Approaches fro opening the abdomen

A
  1. Ventral midline- along linea alba
  2. Paramedian: opening the rectus, 10cm from the midline
  3. inguinal
  4. Flank
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3
Q

Which organs cannot be exteriorised

A

Stomach

Duodenum

Dist ileum

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4
Q

Laparoscopic anatomy- standing Right side

A

Duodenum

Caecum

Lateral and ventral taenia

Small colon

Small intestine

Right ovary and uterus

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5
Q

Surgical approaches in lat recumbency

A
  1. Modified low flank
  2. Transcostal
  3. Intercostal
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6
Q

What are the muscles you must transect for the flank approach

A

Transc abd

Internus abd

Externus abd

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7
Q

When doing a ventr midline approach along the linea alba, what neonatal structure might we come across?

A

Lig teres hepatis= the remnant of the umbilical vein

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8
Q

Laparoscopic approach, what vessel to we need to be aware of?

A

Deep circumflex iliac artery

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9
Q

Laparoscopic approach- the orgasn encountered

A

Caecum is the first

Corpus of caecum will be in the midline Caecocolic ligament: btw lat taenia of caecum and lat taenia of R ventral colon

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10
Q

Anatomy of the caecum

A

4 taenias

BS comes from the lat and med taenias

Lat- leads to lig caecocolica (fold)

Dors- leads to lig ileocaecale (fold)

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11
Q

What does the base of the caecum lead into?

A

The Right ventral colon i.e the asc colon

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12
Q

Main blood vessels supplying the intestines

A

A. colica dextra

A. colica ventralis

ramus colicus?

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13
Q

3 stages of lesions of the intestinal wall

A
  1. Distension
  2. Ischaemic mucosa
  3. Vascular closure
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14
Q
  1. Distension of wall
A

Intraluminal P for 2-4 hours

  • 18H2Ocm: seromusc edema
  • 25H2Ocm: hyperperfusion, edema, invasion of inflamm cells, adhesions for up to 10 days postop
  • Serous, fibrinous exudate
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15
Q
  1. Ischaemic mucosa
A

Small intestine is v.sensitive beacuse tips of villi have specific BS

Large intestine no villi therefore not as sensitive

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16
Q

What is Gruenhagens space?

A

Epithelium lifts from lamina proria as a result of ischaemic cellular damage

17
Q

Reperfusion injury of the intestinal wall

A

ROS attract Ne

Ne infiltrate the muscular and serosal layer

Fibrinous adhesions

18
Q

Case of 12 yr PRE stallion

A

Pedunculated lipoma strangulates middle jejunum

19
Q

Stenosis of small intestines: case study

A

What can be seen prestenosis?

Suffusions

Adhesions on the serosa

Surgical approach: take 1m prestenotic and 50cm of poststenotic intestine and perform a resection

Complication: 60cm prox from the anastomosis: fibrinous adhesions formed btw SI loops- new strangulation and reflux

20
Q

Taenia of the Large Bowel

A

Caecum: 4

RV: 4

LV: 4

Pelvic flexure: 1

LD:3

RD: 3

Small colon: 2

21
Q
A