Misc. surgical knowledge Flashcards
CRP RR
<10
WCC RR
<11
Phlegmon
a localised inflammatory mass of soft tissue, usually secondary to a bacterial infection. May develop into an abscess.
Fat stranding
The change in attenuation of fat around an inflamed structure. Relatively high sensitivity for intra-abdominal pathology.
Radiologic features of fat stranding
Ill-defined margins, slightly increased density, fat still seen amid increased connective tissue lines.
If a patient is recognised to be on DAPT pre-operatively what is the recommended course of action?
Hold 1 week prior
If a patient is identified to be on warfarin pre-operatively what is the preferred course of action?
Check INR and potentially reverse with vitamin K
If a patient is identified to be taking metformin pre-operatively what is the preferred course of action?
Hold 48hrs prior to surgery due to risk of lactic acidosis
If a patient is identified to be taking sulphonylureas pre-operatively what is the preferred course of action?
Short acting = hold morning of surgery
Long acting = hold 48hrs prior
If a patient is found to be taking antihypertensives pre-operatively what is the preferred course of action?
ACEi and ARBs should be held for 24hrs prior
If a patient is found to be taking fish oil pre-operatively then the preferred course of action is?
Hold 1 week prior to procedures with bleeding risk
If a patient is found to be taking steroids pre-operatively then what is the preferred course of action?
Increase the dose perioperatively if dose>5mg
If a patient is found to be taking St John’s Wort pre-operatively what is the preferred course of action?
Hold 2 weeks prior
If a patient is found to be a marijuana user pre-operatively what two things must be considered?
Higher anaesthetic requirements and increased airway irritability
If a patient is found to be a cocaine user pre-operatively what two pathologies are they at risk of developing?
Rhabdomyolysis and stroke
If a patient is found to be an amphetamine user preoperatively what 3 pathologies are they at increased risk for?
Rhabdomyolysis, coagulopathy and renal failure
Situational risk factors for clotting include:
Age >70, reduced mobility, obesity and pregnancy/post-partum
Medical risk factors for clotting include:
Prior VTE, recent trauma, thrombophilia, cardiorespiratory failure, recent MI, ischaemic stroke, rheumatological disorders, orthopaedic surgery and varicose veins