SPECIALTY SURGERY Flashcards
30 year old male smoker with painful blue fingertips
Buergers disease
aka thromboangiitis obliterans
What features of a AAA means there should be should there be surgical repair
above 5.5cm
symptomatic ie pain
rapidly growing
features of an acutely ischaemic limb
6 Ps
PAIN
PULSELESS
PARASTHESIA
PARALYSIS
PALE
PERISHINGLY COLD
What emergency treatments are there for acute limb ischaemia?
surgical embolectomy
Intra-venous heparin
Intra-arterial thrombolysis
ABSOLUTE contraindications for intra-arterial thrombolysis?
Non-viable limb (irreversible ischaemic change – insensate/fixed skin mottling)
Internal bleeding
Suspected aortic dissection
Prolonged or traumatic CPR
Previous allergic reaction
Heavy vaginal bleeding
Pregnancy or < 18 wks postnatal
Acute pancreatitis
Severe liver disease
Active lung disease with cavitation
Oesophageal varices
Recent trauma or surgery (< 2 wks)
Recent head trauma
Cerebral neoplasm
Recent haemorrhagic stroke
Severe hypertension (>200/120 mmHg)
RELATIVE contraindications for intra-arterial thrombolysis?
History of severe hypertension
Peptic ulcer
History of CVA
Bleeding diathesis
Anticoagulants
Complications of aortic dissection
o Cardiac complications include aortic rupture, aortic regurgitation, myocardial
ischaemia and congestive heart failure.
o Stroke and ischaemic neuropathy → Neurological deficit can occur in up to
40% of patients, and can dominate the clinical picture
o Mesenteric ischaemia
o Renal failure
o Death
Complications of surgery
Bleeding
Infection
Damage to surrounding structures
Return to theatre
VTE
difference in the managament of type A and type B aortic dissection
type A:
Medical emergency
A-E
surgical repair
type B:
A-E
If stable, best managed medically with BP and pain control
Lifestyle: smoking cessation
long term patients may be considered for thoracic endovascular repair
(TEVAR).
risk factors for AAA
o Increasing age
o Male gender 9:1 M:F
o Atherosclerotic disease
o Smoking
o Hypertension
Screening for AAA
o Screening in the UK offers an abdominal USS for all men at 65.
o Patients with a AAA >5.5cm should be seen by a vascular service within 2
weeks and considered for surgical intervention.
o Patients with AAA 4.5 – 5.4cm should be followed up by a vascular service
with 3-monthly USS.
o Patients with AAA 3.0 – 4.4cm should be followed up by a vascular service
with yearly USS.
o Patients <3cm can be discharged from the surveillance service.
common cause of acute limb ischaemia
o Embolism
o Trauma
o Aortic dissection
o Peripheral artery disease (PAD) progression
o Iatrogenic damage during surgery
common cause of chronic limb ischaemia
atherosclerotic disease
clinical features of chronic limb ischaemia
o Symptoms are usually bilateral.
o Claudication – patients initially have intermittent claudication, a cramping
pain brought on by exercise and relieved by rest.
o As the disease progresses patients begin to experience pain at rest.
o Finally, the blood supply becomes poor enough to result in gangrene and
tissue loss.
examination findings of chronic limb ischaemia
▪ Inspection may reveal marbled skin, hair loss, muscle wasting, arterial
ulcers and tissue loss.
▪ On palpation the limb will be cold, with weak or absent pulses and
delayed capillary refill time.
Classification system used for acute limb ischaemia
Rutherford classification:
I- viable
IIa- threatened: salvagable if promptly treated
IIb- threatened: salvagable with immediate revascularisation
III- major tissue loss or permanent nerve damage inevitable
Investigations for acute limb ischaemia
Bedside:
Doppler USS of the legs
ABPI
ECG
Bloods:
FBC
VBG- esp lactate
G&S
clotting profile
Imaging:
CT angiography
Management of acute limb ischaemia
A-E
15% O2 NRB
IV access and fluids
NBM
unfractionated heparin
analgaesia
surgical revascularisation
complications of revascularisation surgery
▪ Reperfusion injury:
* Revascularisation leads to increased blood flow and venous
return to flush out the toxic metabolites from the ischaemic
tissue. This results in a systemic inflammatory response.
▪ Compartment syndrome:
* Revascularisation can also lead to tissue swelling due to
oedema and the inflammatory response of reperfusion injury.
* Patients with long ischaemic time often have prophylactic
fasciotomies to prevent this.
▪ Rhabdomyolysis:
* The release of toxic muscle cell components from damaged
ischaemic muscle into the circulation.
* This can lead to AKI due to myoglobin release, and metabolic
disturbances such as hyperkalaemia and metabolic acidosis.
cholecystitis Mx
Medical:
IV fluids
analgaesia
IV antibiotics
surgical:
laparoscopic cholesystectomy within a week
causes of cholecystitis
gall stones causing statis of bile in gall bladder causing infection
gives breeding ground for infection so give prophylactic Abx
esp. Klebsiella
what are gall stones made of
pigment stones
cholesterol stones
RF for gall stones
Asian hispanic ethnicitis
Pregnancy
what is biliary colic
movement of bile stones in the gall bladder with contraction
Features of biliary colic
RUQ pain radiating to shoulder tip
no signs of inflammation ie fever
features of cholecystitis
Constant RUQ
murphys +ve
fever
murphys sign
palpate RUQ get pt to take deep breath in- arrest in breathing
what is Caltot’s triangle in laparoscopic cholecystectomy
triangle surgeons want to visualise as it contains R hepatic artery
what are the benefits cholecystostomy and when would it be done
regional anaesthetic
USS guidance
used in ppl who are bad candidates for GA and cholecystectomy
what is acute/ascending cholangitis
blockage of common bile duct by a stone causing stasis and infection
charcots triad
jaundice
RUP
fever
reynolds pentad
jaundice
RUP
fever
sepsis/ hypotension
Altered mental state
most common causative organisms for acute cholangitis
Klebsiella
E.coli
streptococcus
pseudomonas
Management of acute cholangitis
medical management
USS abdomen- dilated common bile duct
MRCP- contrast
ERCP
complications of ERCP
Pancreatitis
bleeding
damage to surrounding structures
Infection
risk of aspiration
death
What is mirizzi syndrome
gallstone at the neck of the gallbladder which impinges and compresses hepatic duct
cholecystitis that presents as cholangitis
Features of acute pancreatitis
acute burning abdo pain radiating to back
guarding
low grade fever
reduced bowel sounds
How do gall stones cause pancreatitis
blockage of pancreatic duct so retrograde flow of pancreatic enzymes which damages pancreas
how does alcohol cause pancreatitis
causes dysfunction of duodenal sphincter so back flow in biliary tract
causes of pancreatitis - classify
obstruction
-gallstones
-alcohol
toxic/metabolic
- hypercalcaemia
- hypertriglyceridaemia
Iatrogenic
- steroids
-ERCP
infection
- mumps
What is grey turners sign
haemorrgae of retroperitoneal vessels
what is cullens sign
blood translocating along umbilical embryological remnant
Scoring systems of pancreatitis
Glasgow imrie score
(spells pancreas)
Investigations for pancreatitis
bedside:
examine
A-E
bloods:
ABG
FBC- WCC
U&Es
LFTs
albumin
amylase
lipase - most sensitive and specific but more expensive
Bone profile- Ca
lipid profile- triglycerides
why might someone have low PaO2 in pancreatitis
ARDS
fluid in lungs not caused by HF
Cause of shock in pancreatitis
3rd spacing
inflammation causing leakage of fluids into 3rd spaces leading to distributive shock
Complications of acute pancreatitis
Local
abscess
pseudocyst- fibrous scar tissue causing a cyst (not epithelial tissue)
chronic pancreatitis
ARDS
hypocalcaemia
glucose hommeostasis derangement
hypovolaemic shock
DIC
additional medications to give in alcoholic pancreatitis
pabrinex
chlorodiazepoxid- prevent delerium tremens
appendicitis mimics
mittelschmerz (ovulation pains)
ovarian torsion
testicular torsion
ovarian cyst rupture
ectopic pregnancy
Mesenteric adenitis- lymphadenopathy in abdomen
PID
What is Mcbernies point
why do you typically get change in location of pain from general to focussed in appendicitis
visceral peritonium is poorly innervated so pain is more general
as inflammation gets worse it irritated the parietal peritonium which has better innervation causing more localised pain
what is Rovsvigs sign
palpation of LIF will cause pain in RIF
dragging peritoneum over appendix
what is psoas sign
hyperextension of hip
dragging psoas muscle over appendix causing pain
complications of appendicitis
perforation
appendiceal mass- omentum policiling affect
appendiceal abscess
signs of chronic venous insufficiency
haemosiderin deposition and pigmentation
venous eczema
oedema
venous ulcers and atrophy blanche
lipodermosclerosis
varicose veins
telangectasia
Investigations for vascular disease
Bedside:
Hand held doppler of vessels
ankle- brachial pressure index (assess for arterial disease. the lower the index the worse the arterial supply peripherally)
Bloods:
RFs for peripheral vascular disease:
HbA1c
lipid profile
clotting
G&S if requiring surgery
Imaging:
Duplex USS- visualises deep and superficial vessels, shows flow direction and characteristics
CT angiogram
MRI
RFs for AAA
Proven:
smoking
age >60
male
genetics
Possible:
HPTN
hyperlipidaemia
>BMI
classical triad of a ruptured AAA
pain- abdo/ back
hypotension
pulsatile abdominal mass
Investigations for AAA
bedside:
examination
abdo USS (100% sensitive)
BP
bloods
pre surgery: G&S and clotting
FBC, U&Es, lipid
Imaging
CT- important for planning surgery
what arteries do the visceral arteries branch from?
coeliac axis
superior mesenteric artery
inferior mesenteric artery
common causes of acute mesenteric ischaemia
atherosclerotic disease
cardiac emboli eg. from AF
aortic anerysm
aortic dissection
arteritis
hypercoaguability
malignancy causing venous compression
hypotension/ shock
clinical presentation of acute mesenteric ischaemia
abdo pain disproportionate to abdominal findings
vomiting and diarrhoea
abdo distension
rectal bleeding and sepsis as the bowel becomes gangrenous
first line investigation for acute mesenteric ischaemia
bloods not useful dont waste time
CT angiography gold standard
clinical features of chronic mesenteric ischaemia
mesenteric angina- post prandial pain due to digestion not getting metabolic demands
epigastric, gradual worsening, plateau of pain then slow resolution
-initially after large meals
weight loss and food aversion
diarrhoea, vomiting and bloating
mat have bruits
standard things to think about when managing a vascular patient
Conservative:
- diet and exercise
- blood sugar control
Medical:
Mx of CVD RFs
- antihypertensives
- statin
- anticoag
Surgical
- consideration for surgery:
–> surgical bloods (G&S, clotting), fluids, NBM
complications of ischaemia-reperfusion
compartment syndrome- acute inflammation of muscle after restoring perfusion
systemic complications of ROS and neutrophil activatios:
- renal failure (metabolic acidosis, hyperkalaemia, ATN)
- ARDS
- arrhythmias, cardiogenic shock
- hepatic failure
- gastrointestinal endothelial oedema leading to endotoxic shock
risk factors for VTE
Pregnancy and 6weeks post partum
malignancy
Immobility
obestity
hyperlipidaemia
OCP
dehydration
antiphospholipid syndrome
myeloproliferative (CML, PCRV)
Inherited
- factor V leiden
- protein C def
- protein S def
- antithrombin def
scoring system for the likelihood of a DVT
wells score
pathophysiology of varicose veins
superficial venous reflux or incompetence, usually due to failure of valve mechanism
pathophysiology of skin changes with varicose veins
abnormal pressures within the venous system induced by reflux causes subsequent extravasation of blood into tissues
- deposition of haemosiderin, eczema, atrophie blanche, lipodermatosclerosis, ulceration
what is an aneurysm
stretching of all the lumen of the artery and loss of ability to recoil
above what size is deamed an AAA
> 3cm
causes of lower limb ulceration
vascular:
- arterial disease
- venous disease
- vasculitis
Infection/ inflammation:
- osteomyeltitis
- staph abscess / cellulitis
- syphilis
- Yaws
- cutaneous anthrax
- cutaneous TB
- leprosy
- cutaneous leishmaniasis
Trauma
Metabolic
- diabetes- neuropathy
Iatrogenic
- steroids
Neoplastic
- BCC
- SCC
- melanoma
- lymphoma
- sarcoma eg. kaposi
Congenital
- sickle cell disease
- thalassaemia
Nutritional
- vitamin C def
- zinc def
dermatology
- pyoderma gangrenosum
what condition is associated with aortic aneurysm common in females
Takayasus aortitis
3-4.4cm
4.5-5.5
> 5.5
refer USS every year
USS every 3 months
seen by vascular in 2 wekks
management of AAA
conservative
- lifestyle changes
medical
- anti hypertensives
surgical
- open repair
- endovascular aortic repair (EVAR)
What is intermittent claudication vs critical limb ischaemia
stable angina of the lower limbs
and unstable angina- rest pain
important things to ask in Hx of intermittent claudication
How far until pain
what specifically stops activity- pain, breathless, joints
location of pain
characteristic of pain
does the pain go away after rest?
blood thinner used in plaque disease
anti platelet
eg. clopidogrel
becasue want to stop platelets adhereing to plaque
positive buergers gets
pallor then reactive hyperaemia in affected limb