surgery Flashcards
what can raise PSA levels?
PSA levels may also be raised by:
benign prostatic hyperplasia (BPH)
prostatitis and urinary tract infection (NICE recommend to postpone the PSA test for at least 6 weeks after treatment)
ejaculation (ideally not in the previous 48 hours)
vigorous exercise (ideally not in the previous 48 hours)
urinary retention
instrumentation of the urinary tract
Ix of priapism
Cavernosal blood gas analysis to differentiate between ischaemic and non-ischaemic: in ischaemic priapism pO2 and pH would be reduced whilst pCO2 would be increased.
Doppler or duplex ultrasonography: this can be used as an alternative to blood gas analysis to assess for blood flow within the penis (for kids)
fasting and surgery
patients having surgery may drink clear fluids until 2 hours before their operation
Patients are generally advised to fast from non-clear liquids/food for at least 6 hours before surgery
once daily long acting insulins and surgery
reduce by 20%
SGLT2 and surgery
omit morning dose
What nerve at risk with carotid endarterectomy
Hypoglossal
Posterior hip approach, nerve at risk?
Sciatic
Inguinal hernia repair, nerve at risk?
Ilioinguinal nerve
what nerve at risk during anterior resection?
hypogastric autonomic nerves
Nerve at risk during thyroidectomy
Laryngeal
Posterior lymph node triangle ?
accessory nerve
Lloyd Davies stirrups
Common perineal nerve
intermittent claudication and ABPI
1 Normal
0.6-0.9 Claudication
0.3-0.6 Rest pain
<0.3 Impending
1st line Rx Peripheral arterial disease
clopidogrel
inguinal hernia
superior and medial to pubic tubercle
most sensitive test for hiatus hernia
barium swallow
Webers test lateralises to the opposite side with sensorineural hearing loss
head injury and on warfarin?
If a patient is on warfarin who have sustained a head injury with no other indications for a CT head scan, perform a CT head scan within 8 hours of the injury.
CT head scan within 8 hours of the head injury - for adults with any of the following risk factors who have experienced some loss of consciousness or amnesia since the injury:
age 65 years or older
any history of bleeding or clotting disorders including anticogulants
dangerous mechanism of injury (a pedestrian or cyclist struck by a motor vehicle, an occupant ejected from a motor vehicle or a fall from a height of greater than 1 metre or 5 stairs)
more than 30 minutes’ retrograde amnesia of events immediately before the head injury
ct head within 1 hour
GCS < 13 on initial assessment
GCS < 15 at 2 hours post-injury
suspected open or depressed skull fracture
any sign of basal skull fracture (haemotympanum, ‘panda’ eyes, cerebrospinal fluid leakage from the ear or nose, Battle’s sign).
post-traumatic seizure.
focal neurological deficit.
more than 1 episode of vomiting
Where to external haemarrhoids originate?
Below the dentate line
Grading of haemorrhoids
Grade I Do not prolapse out of the anal canal
Grade II Prolapse on defecation but reduce spontaneously
Grade III Can be manually reduced
Grade IV Cannot be reduced
Direct inguinal hernias
Through Hasselbachs triangle
Medial to inferior epigastric
Direct and medial :)
Indirect inguinal hernia
Passes lateral to the inferior epigastric artery
Failure of process vaginalis to close