3rd Yr Surg Flashcards
Anticoagulant Reversal:
Heparin
Warfarin (Raised INR, Bleeding)
Heparin: Protamine Sulphate
Warfarin:
Raised INR (5-8), No bleeding: Reduce Dose
Raised INR (> 8): PO Vitamin K
Bleeding: IV Vitamin K
Major Bleeding/Emergency: Prothrombin Complex (Beriplex)
Transfusion Reactions + Features: Overload Acute Lung Injury Non-Haem Febrile React Acute Haem Febrile React
Overload:
Pulmon Oedema => SOB
Acute Lung Injury:
Inflamm => Pleural Effusion (+ New Infiltrates on CXR)
Non-haemolytic Febrile React:
Cytokines => Fever + Rigors
Acute Haem Febrile React:
Immune Response => Fever
Haemolysis => TachyC + HypoT
Types of Hernias + Mx: Femoral Hiatus Inguinal Umbilical
Femoral (Inf + Lat):
Surg
Hiatus (Stomach -> LOS): Reduce Weight Alignates, PPi (Reduce Reflux) Metocloperamide (Increase motility) Nissens Procedure
Inguinal (Sup + Med):
Watch + Wait (+/- Surg)
Umbilical (< 3yo):
(If non-reducible by 3yo: Surg)
Post-Op Pneumonia Mx
Appropriate Analgesia + Early Chest Physio
Ciprofloxacin
(If Asp: Metronidazole)
Acute Pancreatitis Scoring
Glasgow Score: P: pO2 < 8KPa A: Age > 55yo N: Neutrophillia (WCC > 15) C: Ca2+ < 2mmol R: Renal (Urea > 16mmol) E: Enzymes (LDH > 600) A: Albumin < 32g/L S: Sugar (Glu > 10mmol)
Causes of SBO + LBO
SBO: Adhesions Hernias Volvulus CD
LBO:
Cancer
Diverticular D
Volvulus
Mx of Bowel Obstruct
Indications for Surg
NBM IV Fluids (Correct electrolyte disturbance) w/ Catheter NGT (Decompress GI tract) Analgesia + Antiemetic (If Volvulus: Colonoscopy)
Surg (> 48hrs, Ischaemia/Perf, Reversible - Strangulated Hernia/Tumour)
Diverticular D Types + Features
Painful:
Intermittent LIF pain +/- IBS Sx
Acute:
Colicky LIF pain, IBS Sx, Fever
Bleeding:
Dark, Clotted blood (Spontaneous)
(Few/No Prodromal Sx)
Diverticular D Mx
Clear, liquid diet for 72hrs
IV Fluids
IV ABx
(Surg: Excision + => End Colostomy)
Ischaemic Colitis Sx - 6
Lower Abdo pain N+V Bloody Diarrh Tenderness, Guarding Pyrexia
Ischaemic Colitis Ix
Raised WCC Ba Swallow (Thumbprinting: Submucosal Oedema)
Ischaemic Colitis Mx +/- Complication
NBM (Bowel Rest)
IV Fluids
(If Perf: Surg resection + Colostomy formation)
AAA Screening
All males > 65yo: (USS):
If < 3cm: No f/up required If > 3cm: Annual screen If > 4.5cm: 3 monthly screen If > 5.5cm, Increase in > 0.5cm in 6 months: Urgent Surg If Rupture: Emergency Surg
AAA Mx
If < 3cm: Annual f/up
If > 4cm: 3 monthly USS
If > 5.5cm, Increase in 0.5cm in 6 months: Surg
If Rupture: Emergency Repair
Def Claudication + Critical Limb Ischaemia
Claudication: Intermittent Limb pain
Critical Limb Ischaemia: Rest Pain
Critical Limb Ischaemia Types + Features
Embolus:
Acute, profound Pain (No Collaterals)
Contralat Pulse normal, No Claudication Hx
Thrombus:
Gradual Pain (Collaterals form)
Contralat Pulse weak, Claudication Hx
Critical Limb Ischaemia Ex
Pulseless, Pallor, Perishingly cold (Time for Initial Ix)
Pain, Paraesthesia, Paralysis (Immediate Mx Req)
Petechia/Fixed mottling (Irreversible)
Critical Limb Ischaemia Mx
ABCDE (O2, IV Fluids, Opiates)
5000 Units UFHep
(If Increasing Press/Pain: Fasciotomy - Prevent Compartment Synd)
Lap Cholecystectomy Complications
-> Open procedure Common Bile Duct Injury Bile Leak Intra-abdominal Haem Fail (Retained Stones)
Causes of Jaundice Post-cholecystectomy:
Pre-hepatic
Hepatic
Post-hepatic
Pre-hepatic:
Haemolysis after Transfusions
Hepatic:
Halogenated Anaesthetics
Post-hepatic:
Ligation of CBD/CHD, Thermal Injury, Biliary Sepsis, Gallstone Retention
Hernioplasty Complications:
Early - 4
Late - 3
Early:
Urinary Retention, Haematoma, Inf, Injury
Late: Ischaemic Orchitis (Thrombosis), Chronic Groin Pain/Paraesthesia, Recurrence
Hernioplasty Post-op Care
Day Cases (Unless comorbidity) Discharge w/ Mild Analgesia + Laxative Return to work after 1wk
Nissens Fundoplication Purpose + Complications
Purpose: Repair LOS + Prevent Reflux/Hernia
Gas-bloat Synd (Inability to Belch or Vomit)
Dysphagia
Appendicectomy Complications
Abscess formation, Rupture (+/- => Peritonitis), -> R Hemicolectomy
Gastrectomy Complications:
Physical - 2
Metabolic - 2
Weight loss (Early satiety/Loss of Appetite, Reduced Intake, Malabsorption, Vomiting/Diarrh) Reflux, Bilious Vom
Vit Def (Lack of SB: Folate/Fe, Lack of Parietal Cells: B12) Mineral Def (Lack of Ca2+) => Osteoporosis
AAA Repair Complications:
Open
EVAR
MI, VTE
Renal Fail
Spinal/Mesenteric Ischaemia
Open: Graft Inf
EVAR: Graft Migration/Stenosis, Aneurysmal Leak (Endoleak)
Carotid Endarterectomy Complications
MI, Stroke (Death w/in 1 month)
Haem => Haematoma
Hypoglossal N Damage (Fasciculations + Deviation Ipsilaterally)
Bypass Graft Indications
Rest Pain
Very Short Claudication distance (< 100m)
Sx affecting patients QoL
Bypass Grafts Complications
Haematoma
Distal Embolism
Thrombosis
TURP Indication
Failed Med Tx for BPH
TURP Complications:
Immediate - 3
Early - 2
Late - 3
Immediate: TUR Synd (Absorption of Fluids => Hypo-Na+), Haem, Inj
Early: Inf, Clot Retention/VTE
Late:
Retrograde Ejaculation, ED, Incontinence
Urethral Stricture (=> LUTSx)
Recurrence
Surgery Complications:
Immediate - 3
Early - 6
Late - 4
Immediate (< 24hrs):
Surg Trauma, Intubation (=> Oropharyngeal Trauma), Primary Haem
Early (1 day - 1 month): Secondary Haem, VTE Urinary Retention, Constipation Atelectasis, Pneumonia Wound Inf (+ Abscess), Dehiscence (Anastomotic leak/Hernia) ABx-associated Colitis (C Diff)
Late (> 1month):
Scarring, Adhesions (=> Obstruct), Neuropathy, Failure/Recurrence
Laparoscopic vs Open Surg Advantages - 4
Reduced Pain
Reduced Complications (Wound Inf, Bleeding)
Quicker recovery
Laparoscopic vs Open Surg Disadvantages - 4
Technically Challenging
Longer
More Expensive
Not amenable to all Surg
Pre-op Medication changes
Stop - 5
Continue - 8
Stop: Anti-platelets, Anti-coags COCP/HRT K+ sparing (ACEi/ARB, Spironolactone) PO DM meds Lithium
Continue: Inhalers Steroids AEDs Cardiac meds (Beta-blockers, Statins) Aspirin PPi’s Thyroid meds Immunosupp meds
Stoma Complications
Early - 3
Late - 4
Early:
Haem, High Output (=> Hypokalaemia), Psychological problems
Late:
Obstruct, Dermatitis (esp Ileostomy), Stoma Prolapse/Intusussception, Stenosis
Healing Patho
Reactive (Haematoma):
Blood clot forms (Capillaries invade => Granulation Tissue)
Reparative:
Fibrocallous (Cartilage) secreted by Chondroblasts
Osteoblasts (Endochondrial Ossification) => Bony Callous
Remodelling:
Osteoclasts remove excess bone tissue (In response to Stress)
Primary vs Secondary Bone Healing
Primary: (Aim of Int Fixation):
Well-opposed fragments (No bony Callus forms)
Secondary: (May require traction):
Formation of Callus (Less opposed)
Radius # Mx
Closed Reduction + Cast 4wks
If Unstable: ORIF
Scaphoid # Mx
Scaphoid cast 8-12wks
If displaced: ORIF
Ankle # Classification
Weber:
A: Below Syndesmoses
B: At level Syndesmoses
C: Above Syndesmoses
Ankle # Mx
Cast 6wks
If Unstable, Displaced/Talar shift, Open, Multi-malleolar: ORIF
Tibial # Mx
Plaster of Paris
If Open/Unstable: Surg
NOF # Mx
Analgesia, IV Fluid Resus
(Bisphosphonates + Adcal-D3)
LMWHep
Intracapsular:
Young + Fit: Cannulated Screws
Old + Mobile: THR
Old + Immobile: Hemiarthroplasty
Intertrochanteric: Dynamic Hip Screw
Extracapsular: Intramedullary Nails
Back Pain Red Flags - 10
Age < 20yo, > 55yo Weight Loss, Fever, Night Sweats Recent Trauma Non-mechanical/Inflamm (Improves w/ Act) Motor/Sens loss Bladder/Bowel Impairment Sexual Dysfunction Saddle Paraesthesia Steroid Use Previous Malig, HIV
Cauda Equina Mx
Urgent Referral for Surg decompression (w/in 48hrs)
OA Mx:
Conservative
Med
Surg
Conservative:
Education, Reduce BMI, Exercise (+/- Physio)
Walking aids, Hot/Cold compress, OT
Med:
NSAIDs, Paracetamol, Codeine
Surg: Joint Replacement Joint Fusion (Younger Pt’s)
Osteoporosis Mx
Dietary Advice (Ca2+, Vit D) Exposure to sunlight Bisphosphonates (Alendronate) Weight-bearing exercises OT (Frailty Assess, Fall prevention, Hazard-free Home)
Ca2+, PO4(2-), ALP, PTH: Osteoporosis Primary Hyper-PTH Secondary Hyper-PTH Pagets D Osteomalacia Osteopetrosis
Osteoporosis: Normal
Primary Hyper-PTH: Increased PTH, ALP, Ca2+, Decreased PO4(2-)
Secondary Hyper-PTH: Decreased Ca2+, Increased PTH, ALP, PO4(2-)
Pagets D (Increased Bone Turnover): Increased ALP
Osteomalacia (Hypomineralisation): Decreased Ca2+, PO4(2-), Increased PTH, ALP
Osteopetrosis (Hypermineralisation): Normal
Open #’s Classification
Gustilo-Anderson
I: < 1cm
II: 1-10cm
IIIa: > 10cm (w/ adequate soft tissue cover)
IIIb: > 10cm (w/ Inadequate soft tissue cover) - Requires Plastic Input
IIIc: Vascular Inj - Requires Vascular Input
Hypermobility Scoring - 5
Beighton: Elbow Hyperextension Knee Hyperextension Thumb to Forearm Little finger Extends > 90 Both palms on ground from standing
Dupuytrens Contracture Patho
Fibrosis of Palmar Aponeurosis => Painless Contraction
Dupuytrens Contracture Mx
Surg excision of Palmar Aponeurosis: Fasciectomy
Clavicle # Mx
Rest + Supportive Sling
If Open, Neurovascular compromise, Floating Shoulder: Surg
Atherosclerosis Patho
Endothelial Injury: (HT, Hyperlipid, Turbulent Blood flow)
Chronic Inflamm: (Lipid-laden Foam cells prod GF/Cytokines/ROS => Lymphocyte + SM Infiltration)
SM Proliferation: (Fatty streak -> Atherosclerotic Plaque)
Mx
Manual reduction (w/ Anaesthetic)
Immobilisation
F/up PT