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Slide 1 - Sheng Yan MD, PhD The First Affiliated Hospital Zhejiang University Hernias, and Intraperitoneal abscess
Slide 2 - General consideration Definition Hernia means a sprout, and protrusion. External abdominal wall hernia is an abnormal protrusion of intra-abdominal tissue or the whole or part of a viscera through an opening or fascial defect in the abdominal wall. most occur in the groin
Slide 3 - Historical Hernias Hernias have been documented throughout history with varying success at either reduction or repair.
Slide 4 - Trusses & Techniques
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Slide 6 - Camper’s Scarpa’s Fascia
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Slide 10 - Inguinal canal Contents: spermatic cord, round ligament, ilioinguinal nerve anterior: skin, superficial fascia, and external ablique aponeurosis posterior: transversalis fascia superior: conjoined tenden inferior: inguinal ligament Hesselbach’s triangle Bounded by the inguinal ligament, the inferior epigastric vessels, and the lateral edge of rectus muscle.
Slide 11 - scrotum
Slide 12 - Anatomy
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Slide 14 - Pathological anatomy The hernia composed of: covering tissue: skin, subcutanous tissue hernial sac: protrusion of peritonum, neck of the sac: is narrow where the sac emerges from the abdomen body of the sac hernial contents: small intestine, major omentum
Slide 15 - Etiology 1. intensity of abdominal wall decreased common factors: 1) site that some tissues pass through the abdominal wall, eg. Spermatic cord, round ligament of uterus 2) bad development of abdominal white line 3) incision, trauma, infection et al. defect in collagen synthesis or turnover 2. any condition which increases intra-abdominal pressure chronic cough, chronic constipation, dysuria, ascites, pregnancy, cry
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Slide 17 - Causes of indirect inguinal hernia 1. congenital abnormality of anatomy due to failure of fusion of the processus vaginalis peritonei after the testis has descended into the scrotum. 2. acquired weakness or defect of abdominal wall
Slide 18 - Clinical manifestation and diagnosis Symptoms: pain, discomfort, dragging sensation Sign: reducible or irreducible lump, expansive cough impulse Reducing the hernia fully, compress the internal ring: be controlled – indirect not controlled -- direct
Slide 19 - Hernia Exam
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Slide 21 - Differential diagnosis 1 hydrocele of testis translucent test (+) 2 communicated hydrocele 3 hydrocele of cord: not reducible 4 undescended testis 5 acute intestinal obstruction
Slide 22 - Clinical types 1. reducible hernia is one in which the contents of the sac return to the abdomen spontaneously or with manual pressure when the patient is recumbent. 2. irreducible hernia is one whose contents or part of contents cannot be returned to the abdomen, without serious symptoms. hernias are trapped by the narrow neck Sliding hernia is one in which the wall of a viscus forms a portion of the wall of the hernia sac. It is may be colon ( on the left), cecum (on the right) or bladder (on either side). Belongs to irreducible hernia
Slide 23 - 3. incarcerated hernia: is one whose contents cannot be returned to the abdomen, with severe symptoms. 4. strangulated hernia: denotes compromise to the blood supply of the contents of the sac. incarcerated hernia and strangulated hernia are the two stages of a pathologic course Richter’s hernia (intestinal wall hernia ) a hernia that has strangulated or incarcerated a part of the intestinal wall without compromising the lumen. Littre hernia: a hernia that has incarcerated the intestinal diverticulum (usually Meckel diverticulum). Reductive incarcerated hernia: reduction of the hernial contents ( intestine ) into abdominal cavity.
Slide 24 - Sliding hernia viscera forms a portion of the wall of the hernia sac
Slide 25 - Richter——intestinal wall Littre ——intestinal diverticulum
Slide 26 - incarcerated hernia: is one whose contents cannot be returned to the abdomen, with severe symptoms incarcerated hernia Reductive incarcerated hernia
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Slide 28 - strangulated hernia: denotes compromise to the blood supply of the contents of the sac
Slide 29 - Indirect Hernia Route Note: The hernia sac passes outside the boundaries of Hesselbach's triangle and follows the course of the spermatic cord.
Slide 30 - Direct Hernia Route Note: The hernia sac passes directly through Hesselbach's triangle and may disrupt the floor of the inguinal canal.
Slide 31 - Differences between indirect and direct hernia
Slide 32 - Treatment 1. nonoperative therapy Indications: <1 year old elderly patients or with severe systemic disease--truss
Slide 33 - 2, Specific Surgical Procedures Lichenstein (Tension Free) Repair Bassini Repair McVay (Cooper’s Ligament) Repair Shouldice (Canadian) Repair Laproscopic Hernia Repair
Slide 34 - Bassini Repair Is frequently used for indirect inguinal hernias and small direct hernias The conjoined tendon of the transversus abdominis and the internal oblique muscles is sutured to the inguinal ligament
Slide 35 - AKA: Cooper’s ligament Repair Is for the repair of large inguinal hernias, direct inguinal hernias, recurrent hernias and femoral hernias The conjoined tendon is sutured to Cooper’s ligament from the pubic cubicle laterally McVay Repair
Slide 36 - McVay Repair Note: This repair reconstructs the inguinal canal without using a mesh prosthesis.
Slide 37 - Ferguson repair Conjoint tendon Inguinal Lig Spermatic cord Ferguson Repair the anterior wall of the inguinal canal
Slide 38 - Shouldice Repair AKA: Canadian Repair A primary repair of the hernia defect with 4 overlapping layers of tissue. Two continuous back-and-forth sutures of permanent suture material are employed. The closure can be under tension, leading to swelling and patient discomfort.
Slide 39 - Lichtenstein Repair AKA: Tension-Free Repair One of the most commonly performed procedures, using prosthetic materials A mesh patch is sutured over the defect with a slit to allow passage of the spermatic cord
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Slide 41 - Lichtenstein Repair Note: Open mesh repair. Mesh is used to reconstruct the inguinal canal. Minimal tension is used to bring tissue together.
Slide 42 - Laparoscopic Hernia Repair Early attempts resulted in exceptionally high reoccurrence rates Current techniques include Transabdominal preperitoneal repair (TAPP) Totally extraperitoneal approach (TEP)
Slide 43 - Types of Laparoscopic Inguinal Hernia Repair IPOM (IntraPeritoneal On-lay Mesh) repair. A mesh is placed intra-abdominally covering the hernia defect and then secured to the abdominal wall. Very popular at the beginning of laparoscopic experience, it has since been abandoned. TAPP  (Trans Abdominal Pre-Peritoneal) repair. With this technique, the pre-peritoneal space is accessed from the abdominal cavity and a mesh is then placed and secured. This is procedure of choice for recurrent inguinal hernias or in case of incarcerated bowel – visualized. TEP (Totally ExtraPeritoneal) repair. The mesh is again placed in the retroperitoneal space, but in this case, the space is accesed without violating the abdominal cavity. This is probably the most physiological repair although technically more demanding. The procedure of choice for bilateral inguinal hernia repairs
Slide 44 - Trochar placement for both TEP & TAPP
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Slide 47 - Laparoscopic Mesh Repair Note: Viewed from inside the pelvis toward the direct and indirect sites. A broad portion of mesh is stapled to span both hernia defects. Staples are not used in proximity to neurovascular structures.
Slide 48 - Femoral hernia Inguinal lig. Cooper Lig. Femoral V. Femoral ring
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Slide 50 - McVay REPAIR Direct suture OPERATION
Slide 51 - The incision most common for hernia: trans-rectus incision The major reason for incisional hernia : incisional infection 50% Incisional Hernia
Slide 52 - Poor nutritional status
Slide 53 - Incision hernia
Slide 54 - Incision hernia
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Slide 57 - Intraperitoneal abscess
Slide 58 - Gross: Supra-mesocolic spaces: falciform lig. Right sub-phrenic space: suprahepatic space / infrahepatic space Left subphrenic space: - space bet. left lobe of liver & stomach - lesser sac
Slide 59 - Gross: Infra-mesocolic spaces: Right lateral paracolic / right medial paracolic gutter Left medial paracolic / left lateral paracolic gutter
Slide 60 - ANATOMY: Microscopic: Mesothelium – 1.8 m2 Mesothelial cells (cuboidal cells/flattened cells) Stomata Basement membrane Connective tissue (collagen, elastic fiber, fibroblast, adipose, endothelial cells, mass cells, machrophage). Gross: Intra-abdominal area: (intraperitoneal / retroperitoneal) Intra-peritoneal Space – defined by mesothelial membrane a. visceral peritoneum b. parietal peritoneum
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Slide 63 - Thanks Welcome questions!