Surgery 2 Flashcards
What is a direct inguinal hernia?
passes through Hesselbach’s triangle in the abdominal wall
passes through superficial inguinal ring
What are the borders of Hesselbach’s triangle
inguinal ligament at base
lateral border of the rectus sheath
inferior epigastric vessels laterally
What is an indirect inguinal hernia
passes through patent process vaginalis through deep inguinal ring
Where is the deep inguinal ring found?
midpoint of the inguinal ligament
= between ASIS and pubic tubercle
What is found at the midinguinal point?
femoral artery
= between ASIS and pubic symphysis
What is the relation of the inguinal hernias to the inferior epigastric vessels
direct = medial to the inferior epigastric vessels indirect = lateral to the inferior epigastric vessels
What are the risk factors for inguinal hernias
heavy weight lifting chronic cough obesity chronic constipation male
what are the signs of an inguinal hernia
lump media and superior to the pubic tubercle
positive cough impulse
reducible?
if enters scrotum - can you get above it?
What is the treatment for an inguinal hernia
reduction - open or laparoscopic mesh
laparoscopic preferred for bilateral or recurrent inguinal hernias
What are the complications of an inguinal hernia repair
early: bruising, wound infection
late: chronic pain, recurrence
damage to vas deferens or testicular vessels
Define hernia
the protrusion of part or whole of an organ or tissue through the wall of the cavity that normally contains it.
What are the symptoms and signs of an irreducible or incarcerated hernia
painful, tender, and erythematous lump
features of bowel obstruction
What is an irreducible or incarcerated hernia?
bowel unable to return to original cavity
What is an strangulated hernia
compression of bowel has cut off blood supply to bowel, so ischaemia occurs
How can direct and indirect inguinal hernias be differentiated on examination?
reduce hernia occlude deep femoral ring at mid point of inguinal ligament cough impusle if hernia does not protrude = indirect if hernia still protrudes = direct
What is the differential diagnosis for an inguinal hernia
Femoral hernia Saphena varix Inguinal lymphadenopathy Lipoma Groin abscess Internal iliac aneurysm
What are the differential diagnoses for a mass in the scrotum
varicocoele
hydrocoele
inguinal hernia
testicular mass
When is an USS recommended when diagnosing an inguinal hernia
if there is diagnostic uncertainty
or to exclude other pathology.
What is the annual risk of strangulation of an inguinal hernia?
3%
What is a femoral hernia
protrusion of bowel through the femoral ring into the femoral canal
What are boundaries of the femoral ring
anterior = inguinal ligament
posterior = pectineal ligament
lateral - femoral vein
medial = lacunar ligament
What are risk factors for a femoral hernia
female
multiple pregnancies
obesity
chronic constipation or coughing
What are the signs of a femoral hernia
lump in groin
inferior and lateral to the pubic tubercle
below inguinal ligament
medial to femoral pulse
Why are femoral hernias prone to strangulation
tight ligament borders of the femoral ring
What are the differential diagnoses in femoral hernia
Low presentation of inguinal hernia Femoral canal lipoma Femoral lymph node Saphena varix Femoral artery aneurysm
What is the gold standard investigation for femoral hernia
USS
Why are all femoral hernias meant to be surgically managed
due to high risk of strangulation
What is the surgical management of a femoral hernia
reduction of the hernia
surgical narrowing of the femoral ring with the use of interrupted sutures
What is the risk of strangulation of femoral hernia at 3m and 21m after initial diagnosis
3m = 22% 21m = 45%
Describe a hiatus hernia
protrusion of the stomach into the thorax through the oesophageal hiatus
What is the difference between a rolling and sliding hiatus hernia
sliding = movement of oesophagus and gastroeosophageal junction upwards
rolling = GOJ in same place. fundus moves up to lie next to GOJ
Do you get symptoms of reflux in sliding or rolling hiatus hernia
sliding - GOJ compromised
what are teh symptoms of hiatus hernia
GORD vomiting weight loss hiccuping swallowing difficulties
What are the complications of hiatus hernia
incarceration
strangulation
volvulus
What is the conservative management of hiatus hernia
PPI
diet modification
weight loss
stop alcohol and smoking
What is the surgical management of hiatus hernia
curoplasty = reduction into abdomen
fundoplication = fundus wrapped arounf LOS and stretched to stregthen LOS
When would you consider surgical management of hiatus hernia
if conservative failed
if high risk of strangulation
if nutritional failure
What are the signs and symptoms of gastric volvulus
Severe epigastric pain
Retching without vomiting
Inability to pass an NG tube
What increases the risk of an incisional hernia
obesity midline incisions age pregnancy cough diabetes steroids smoking
What is the definition of a peptic ulcer
break in the mucosal surface of the stomach or duodenum that extends to the muscularis mucosae
What is the most common location for a peptic ulcer
first part of the duodenum
lesser curvature of the stomach
What are the causes of PUD
Helicobacter pylori infecion NSAIDs alcohol smoking ZE syndrome steroids
What class of bacteria is H pylori
gram negative bacillus
spiral shaped
urease producing
What enable H pylori to survive in the stomach
urease: urea to ammonium. creates neutral environment for the bacteria to survive in
Why does H pylori infection leads to PUD
causes inflammation of the mucosa
stimulates G cells to secrete gastrin, leading to increased acid production
atrophy
imbalance between acid and protective mucus
Why do NSAIDs cause PUD
inhibition of prostaglandin synthesis causes reduction in mucus priduction
imbalance between acid and protective mucus
What are the symptoms of PUD
epigastric pain - worse on eating (gastric) or 2-4h after (duodenal) nausea anorexia weight loss tiredness malaena
What are the red flag symptoms for gastric cancer which require urgent OGD
new onset dysphagia
> 55 with weight loss
+ abdo pain, reflux or dyspepsia
What investigations should be carried out in suspected PUD
FOB
FBC, U+E,
Urease breath test - must stop PPI at least 2 weeks prior
What is the management of PUD
lifestyle interventions
PPI for 4-8weeks
if proven H pylori - triple therapy
OGD to check resolution
What are some lifestyle interventions for PUD
stop smoking less alchohol small meals not eating for 3 hours before bed Lose weight Avoid any trigger foods, such as coffee, chocolate, tomatoes, fatty or spicy foods.
What is triple therapy for H pylori
PPI eg lansoprazole
amoxicillin
clarithromycin
7 days
if penicillin allergic = clarithromycin + metronidazole
What are the complications of PUD
haemorrhage perforation gastric outlet obstruction malignancy - H pylori increases risk anaemia
What artery is most likely to cause haemorrhage in PUD
gastroduodenal
What is an AAA
dilation of the abs=dominal aorta >3cm (normal - 1.5cm)
What is the pathophysiology of AAA
loss of elastic proteins and extracellular matrix in intima and media of the AA due to proteolytic activity and lymphocytic infiltration
What are the risk factors for AAA
male age HTN hyperlipidaemia smoking FH
What are the signs and symptoms of AAA
none!
back/.abdo/loin pain
distal emboli
pulsating mass above umbilicus
What is the ddx of AAA
renal colic IBD/IBS diverticulitis appendicitis GI haemorrhage
Describe the screening programme for AAA
abdominal USS for men aged 65
small 3-4.4cm USS every year
medium 4.5-5.4cm USS every 3m
large >5.5cm offer surgery
Define small medium and large AAA
small 3-4.4cm
medium 4.5-5.4cm
large >5.5cm
What investigations are done in suspected AAA
USS abdomen
CT with contrast if >5.5cm for operative planning
What is the conservative management of AAA
stop smoking
weight loss
control BP
statin and aspirin
When should the DVLA be informed of an AAA
when it is greater than 6cm
need to stop driving due to risk of rupture
What benefits does stopping smoking have in AAA
slows rate of progression
decreases risk of rupture
When is surgery offered in AAA
if >5.5cm
if expanding at >1cm/year
if symptomatic
What are the surgical options in AAA
endovascular repair
open repair
What are the risks and benefits of endovascular aneurysm repair (EVAR) of AAA
risks: endoleak, increased risk of reintervention and rupture. will need regular CT angiograms to monitor
benefits: reduced 30 day mortality, reduced hospital stay
same long term outcomes as open
What is an endovascular leak
a leak around a graft used in endovascular repair
State the types of endovascular leak
1 = leak around edge of graft 2 = filling by branch vessel 3 = leak through defect in graft 4 = leak through porous material of graft 5 = no obvious site of leakage, but the aneurysm is expanding
What increases the risk of AAA rupture
smoking
female
HTN
FH
What are the symptoms and signs of AAA rupture
back/abdo pain (most are retroperitoneal) vomiting syncope low BP raised HR pulsatile abdo mass abdominal tenderness
how should an AAA rupture be managed
high flow oxygen 2x large bore cannulae bloods - FBC, amylase, cross match ECG o-ve blood keep BP below 100 CONTACT VASCULAR TEAM
Why does the blood pressure need to be maintained below 100mmHg in AAA rupture
prevents excessive blood loss
reduces risk of rupturing contained leak
When should warfarin be stopped pre-operatively?
5 days before op
When should clopidogrel be stopped pre-operatively?
5 days before op
Why are pre-medications given in surgery
decrease gastric volume
decrease post op N+V
decrease anxiety