Passmed General Surgery, Colorectal, and Upper GI Mushkies Flashcards
Maximum normal diameter of small bowel?
35mm
Maximum normal diameter of large bowel?
55mm
Small bowel on AXR feature?
Valvulae conniventes extend all the way across
Large bowel on AXR feature?
Haustra extend about a third of the way across
Is there any relevance to the clinical mx of direct vs. indirect hernias?
No
Lowest recurrence rate type of hernia repair?
Mesh repair
Open hernia repair time to return to work?
2-3 weeks
Lap hernia repair time to return to work?
1-2 weeks
Bascom procedure?
Excision of pits and obliteration of the underlying cavity of a pilonidal sinus
Karydakis procedure?
Wide excision of the natal cleft such that the surface is recountoured once the wond is closed
Pathophysiology of pilonidal sinus?
Hair debris creating sinuses in the skin
Grey turners sign pathophysiology?
Pancreatitis process results in local fat destruction, this results in blood tracking down the tissue planes of the retroperitoneum and appearing as flank bruising
Psoas sign?
Acute retrocaecal appendicitis is indicated when the right thigh is passively extended with the patient lying on their side with their knees extended
Boas’ sign?
Hyperaesthesia below the right scapula in cholecystitis
First line mx of hypovolaemic shock in an adult?
500ml crystalloid over 15 minutes e.g. Hartmann’s or PlasmaLyte
5 types of shock?
- Cardiogenic
- Neurogenic
- Anaphylactic
- Haemorrhagic
- Septic
Overall hallmarks of sepsis?
Excessive inflammation, coagulation and fibrinolytic suppression
Average adult blood volume as % of body weight?
7%
Arterial pressure required to generate a palpable femoral pulse?
> 65mmHg
Most common cause of neurogenic shock?
Spinal cord transection, resulting in decreased sympathetic tone or increased parasympathetic tone
Soap bubble appearance on X ray?
Giant cell tumour, presenting as pain or pathological fractures
5 bone metastases sources?
- Breast
- Lung
- Thyroid
- Renal
- Prostate
Causes of pathological fractures?
- Metastatic fractures
- Bone disease
- Local benign conditions
- Primary malignant tumours
4 bone diseases that cause pathological fractures?
- Osteoporosis
- Osteogenesis imperfecta
- Metabolic bone disease
- Paget’s disease
2 local benign conditions that cause pathological bone fractures?
- Chronic osteomyelitis
2. Solitary bone cyst
3 primary malignant tumours that cause pathological fractures?
- Chondrosarcoma
- Osteosarcoma
- Ewing’s tumour
2 eponymous signs of acute pancreatitis?
- Cullen’s sign = periumbilical discoloration
2. Grey-Turner’s sign = flank discoloration
Mesenteric adenitis is preceded by?
A recent URTI
How does one look for air under diaphragm?
Erect CXR
Post gastrectomy syndromes?
- Small capacity
- Dumping syndrome
- Bile gastritis
- Afferent and efferent loop syndromes
- Anaemia (B12 deficiency)
- Metabolic bone disease
Dumping syndrome pathophysiology?
- Post gastric surgery
- Hyperosmolar load rapidly entering the proximal duodenum –> osmosis drags water into the lumen, resulting in lumen distension (pain) and then diarrhoea
- Excessive insulin release also occurs and results in hypoglycaemic sx
RTAs involving passengers wearing seatbelts incorrectly can result in?
Lacerations to the carotid artery
Trimodal death distribution following trauma?
- Immediately following injury = brain/spinal/cardiac/great vessel damage
- Early hours following injury = splenic rupture/subdurals/haemopneumothoraces
- Days following injury = sepsis/MOD
High riding prostate on PR?
Urethral disruption
Blood at urethral meatus?
Urethral tear
Spina bifida occulta may affect up to what % of the population?
10%
Ankylosing spondylitis HLA?
HLA B27
Scheuermann’s disease?
Self limiting skeletal disorder of childhood where the vertebrae grow unevenly with respect to the sagittal plane - posterior angle is often greater than anterior, usually resulting in progressive thoracic kyphosis
Mx of Scheuermann’s disease?
- Physio and analgesia
2. Severe –> bracing or surgical stabilisation
Scoliosis defn?
Curvature of the spine in the coronal plane
Classification of scoliosis?
- Structural
2. Non-structural
Non-structural scoliosis most common in what demographic?
Adolescent females
Classification of structural scoliosis?
Affects >1 vertebral body
- Idiopathic
- Congenital
- Neuromuscular
Mx of severe/progressive structural spina bifida?
Bilateral rod stabilisation of the spine
Spina bifida defn?
Non fusion of the vertebral arches during embryonic development
3 types of spina bifida?
- Myelomeningocele
- Meningocele
- Spina bifida occulta
Spondylolysis defn?
Congenital or acquired deficiency or the pars interarticularis of the neural arch of a particular vertebral body, usually affects L4/L5
Spondylolisthesis defn?
Condition where one vertebra is displaced relative to its immediate inferior vertebral body, that may occur as a result of stress fracture or spondylolysis
Scottie Dog appearance?
Traumatic Spondylolisthesis
Main antigens that give rise to organ transplant rejection?
- ABO blood group
- HLA
- Minor histocompatability genes
Types of organ rejection?
- Hyperacute = ABO incompatible
- Acute = T cell mediated
- Chronic
Score for assessment of Upper GI bleed?
Blatchford score
Dieulafoy lesion?
A large tortuous arteriole most commonly in the stomach wall (submucosal) that erodes and bleeds.
Multiple rib fractures with >= rib fractures in 2 or more ribs?
Flail chest
Mediastinal traversing wound defn?
Entrance wound in one hemithorax and exit wound/foreign body in opposite hemithorax
Cause of duodeno-jejunal flexure disruption?
Deceleration injury
DALM in rectum?
Dysplasia associated lesion or mass
Tumour marker in Cholangiocarcinoma?
Ca19-9 raised in 80% cases
Primary liver tumours?
- HCC
- Cholangiocarcinoma
- Hepatoblastoma
- Sarcomas
- Lymphomas
- Carcinoids
HCC prognosis?
Poor, overall survival is 15% at 5 years
Second most common type of liver malignancy?
Cholangiocarcinoma
Main RF for cholangiocarcinoma?
PSC
Total hip replacement nerve injury?
Sciatic nerve
Best initial Ix for presence of fluid in the abdomen and thorax?
FAST scan
FAST scan acronym?
Focused assessment with sonography for trauma
Mx of anal fissure?
- Conservative = stool softeners
- Medical = Topical GTN or diltiazem
- Surgical = Botulinum injection, sphincterotomy
Haemorrhoids Mx?
- Conservative = stool softeners, avoid straining
2. Surgery
Perianal abscess Mx?
Incision and drainage