Surgery - Misc (Trauma, Vascular, MS, Repro, Renal) Flashcards
Meniscal injuries
- most common when?
- signs/symptoms
- physical exam
- diagnosis?
Most often in pts in 30s-40s
Happens when performing activities needing axial loading and rotation
Classic:
- pt feels a pop followed by pain
- joint swelling following 12-24 hrs
PE:
- joint line tenderness
- decreased ROM
- McMurray’s test
MRI to dx
Meniscal vs. ligamentous injuries
Meniscal injuries joint swelling over 12-24 hrs
Ligamentous injuries are REALLY RAPID swelling b/c hemarthrosis
- ligaments have more blood supply than menisci
- ex: ACL tear
Patellar tendonitis
From chronic overuse (like strenuous athletic activities)
Point tenderness over proximal patellar tendon
Anserine bursitis
Anserine bursa = under conjoined tendons of gracilis and semitendinosus muscles
- separates theses muscles from head of tibia
Bursitis –> tenderness over MEDIAL knee
- usually in atheletes and obese middle age –> elderly women
Penile fracture
- what happens?
- treatment?
Tearing of tunica albuginea which invests the corpus cavernosum
Hematoma rapidly forms at site of injury –> bends shaft of penis at fracture site
Tx:
- emergent urethrogram to look for urethral injury
- then emergent surgery to evacuate hematoma and mend torn albuginea
Organs lacerated in blunt abdominal trauma
- spleen
2. liver
How to evaluate blunt ab trauma
Hemodynamilcaly unstable + unresponsive to fluids –> exlap
Responds to fluids: CT scan is next best step
- assess for intraperitoneal free fluid or hemorrhage
- use US
+ eval pericardium = focused assessment w/ sonography for trauma (FAST) exam - Exploratory laprotomy if diagnostic peritoneal lavage or FAST is +
OR
- Ab CT to see if need ex lap if hemodynamically stable and (-) FAST
Focused assessment w/ Sonography for trauma (FAST) exam
US to detect free intraperitoneal fluid + evaluate pericardium
High sensitivity + specificity to detect hemoperitoneum, pericardial effusion, intraperitoneal fluid
Sepsis
Response to an infection
= SIRS w/ known infection
Systemic inflammatory response syndrome (SIRS)
Response to NONinfectious cause
Need at least 2/4 criteria
Temp > 101.3 or < 95
Pulse > 90
Respiration > 90
WBC > 12,000, < 4000, or > 10% bands
Major cause of morbidity and mortality in patients w/ total body surface burns?
Hypovolemic shock
Usually 2/2 sepsis and septic shock
Who do you use the following for?
- orotracheal intubation
- laryngeal mask placement
- nasotracheal intubation
- needle cricothyroidotomy
OT intubation = unstable, apneic pts
Laryngeal mask = temporary if OT intubation fails and need to figure out what to do next
NT intubation = blind procedure, pt needs to be breathing SPONTANEOUSLY
Needle CT = good for children in field. Not for adults b/c risk CO2 retention
+ psoas sign
no guarding, rigidity, rebound
What could be likely?
Psoas abscess
- usually staph aureus
from furuncles on leg, heme spread of bacteria, etc
Not appendicitis b/c - guarding, rigidity, rebound
CT scan to confirm
Steps in diagnosing peripheral artery disease
Usually due to atherosclerosis
1 is normal
1) Ankle-brachial index via Doppler
- ratio < 0.9 (nl = 1-1.3) is very sensitive and specific for > 50% occlusion in major vessel
2) If normal ABI…
- Exercise test w/ repeat ABI
Tx peripheral artery disease
Aspirin + cilostazol
Verapamil can improve walking distance but change ABI
Tight glucose control doesn’t have significant impact on PAD
Most important goal in management of rib fracture?
Ensure proper analgesia
Rib fracture very painful and may cause hypoventilation —> atelectasis or pneumonia
Can use
- NSAIDs
- opaiates
- intercostal nerve block (some risk pneumothorax)
DO NOT NEED TO DO MECH STABILIZATION OF CHEST WALL
Acute febrile nonhemolytic transfusion reaction
- how happen?
- tx
Happens after blood transfusions
Increase 1C + rigors
Ab bind donor cells –> activate complement –> release inflammatory cytokines
Tx:
- stop blood transfusion
- give antipyretics
Thigh abduction at hip
Gluteus medius
Gluteus minimus
Superior gluteal N
Palsy: Trendelenburg gait
Hip abduction (assists) Knee extension (maintains)
Tensor fascia lata
Iliac crest –> fascia lata
Flex and laterally rotate thigh
Psoas major muscle
Transverse processes of lumbar vertebrae –> lesser trochanter of femur
Lateral flexion of trunk
Rib cage fixation
Quadratus lumborum
Iliac crest –> 12th rib and transverse processes of L1-L4
Leg extension at knee
Quadriceps femoris
Hip flexor
Rectus femoris
Most common cause of sepsis in splenectomy patients?
S. pneumo
If suspect child abuse…
1) Perform thorough PE + skeletal survey to document abuse
2) Report case to child protective services
3) admit pt for safety
How do you manage splenic trauma if patient is
- hemodynamically unstable + responds to fluids
- hemodynamically unstable + unresponsive to fluid administration?
If responds to fluids (SBP > 100
- abdmoinal CT scan
Unresponsive..
- ex lap
Compartment syndrome signs
Deep pain out of proportion to injury
Pulselessness
Paresthesias
Cyanosis
Pallor
PULSES present DO NOT rule out compartment syndromeage in an unstable trauma patient if FAST exam is inconclusive
Eschar
Firm necrotic tissue formed on exposed tissue following burn wounds
If circumferentially on extremity, can restrict outward expansion of compartment as edema builds –> vascular flow compromised –> compartment syndrome
Need to do escharotomy
Also do escharotomy if muscle compartment pressure > 30 mmHg
Abdominal bleeding - diagnostics?
Hemodynamically stable –> abdominal CT
Hemodynamically unstable –> FAST US, then DPL
Rupture of tendon of long head of biceps
Biceps muscle belly becomes prominent in mid upper arm
Weakness in supination
Forearm flexion OK
+ drop arm sign in shoulder injury
Rotator cuff tear
Better to dx diffuse axonal injury
MRI
CT will show many minute punctate hemorrhages w/ blurring of grey white interface
Nasal septum surgery - complications
Difficult to heal b/c septum poorly perfused cartilage
Can result in septal perforation = whistling noise during repisration
Nasal furunculosis
From staph folliculitis
Usually after nose picking or nasal hair plucking
Can be life threatening if spreads to cavernous sinus
Pain, tenderness, erythema in nasal vestibule
Best for animal bites
Unasyn (ampicillin + sulbactam)
How are hip fractures classified?
By anatomic location and fracture type
Intracapsular
- femoral neck and head
- —-> higher chance of avascular necrosis
Extracapsular
- intertrochanteric and subtrochanteric
- —–> greater need for implant devices (eg nails and rods)
Risk factors for VTE
MOIST
Malignancy
Motherhood
Ortho procedures
Oral contraceptives
Immobility
Inflammation (lupus)
Surgery
Trauma
Thrombophilic disorder or previous DVT
Can you infuse vanco fast into blood? Why not?
NO!
Will cause thrombophlebitis
What to do for hydrocele in newborn?
Nothing!
Most will resolve by age of 12 months
- can be safely observed during that period
Communicating hydrocele needs surgery
Kehr sign
L shoulder pain referred from splenic hemorrhage irritating phrenic N and diaphragm
Signs of necrotizing infection
Intense pain in wound
Fever, hypotension, tachy
Decreased sensitivity at edges of wound
Cloudy-gray discharge
Tense edema outside involved skin
SubQ gas w/ crepitus
Acute pain
Swelling
of midline sacrococcygeal skin + subQ tissues
Infection of pilonidal cyst
Most common in young males w/ larger amts of body hair
Can spread to form abscess
Drain abscess and excise sinus tracts
Nerve entrapment features
Radiating pain
Not reproducible usually with palpation
Central cord syndrome
Classical w/ hyperextension injuries in elderly w/ degen changes in cervical spine
Selective damage to central portion of anterior spinal cord
Weakness more pronounced in upper extremities than in lower extremities
- arm motor fibers nearer to central part of corticospinal tract
Tx scaphoid bone fractures
If nondisplaced, wrist immobilization for 6-10 wks
If displaced (>2mm), open reduction and internal fixation
Most common peripheral artery aneurysms
Popliteal > femoral
Hemodynamically unstable victim of MVA w/ suspected blunt ab trauma (BAT), management?
C-spine immobilization
IV hydration
FAST
Hemodynamically stable victim of MVA w/ suspected BAT, management?
CT scan of abdomen w/ contrast
Quantify amt of blood
Surgeon selects laparotomy or admission and observation based on CT result
Drugs increasing cAMP
Increases heart contractility
Relaxes smooth muscle of arteries
Theophylline
PDE-3 inhibitors:
- Millrinone
- Caffeine
- cilostazol
- dipyridamole
Drugs increase cGMP
Hydralazine
Nitroprusside
Nitroglycerin
PDE-5 inhibitors:
Sildenafil
Next steps in management after a fall showing a hip fracture
1) Stabilization, treatment for pain control, DVT ppx
2) Figure out cause of fall and assess preop risk
In elderly, commonly:
- syncope (arrhythmia, valves)
- ACS
- Heart failure
- CNS pathology (TIA, stroke)
- infection (PNA)
- metabolic (Hypoglycemia)
Get:
- EKG
- trops
- CXR
Stasis dermatitis
- pathology
LE venous valvular incompetence —>
Pooling of venous blood and increased P in postcapillary venules —>
Damages capillaries w/ increased P —>
Lose fluid, plasma proteins, RBC into tissue –>
RBC extravasation causes hemosidering deposition –>
get classic color of stasis dermatitis
Xerosis is most common early finding
Preeclampsia
Triad of
HTN
Proteinuria
Edema
Todd paralysis
Transient unilateral weakness after tonic-clonic seizure that usually resolves
What’s a common physical sequelae after grand mal seizure?
Posterior dislocations of shoulder
Pt holds arm addudcted and internally rotated
Anterior urethra injuries
- where is the injury?
- how does it happen?
- findings
Injury to urethra distal to urogenital diaphragm
Usually due to blunt trauma to perineum (straddle injuries) OR instrumentation of urethra
Exam:
- perineal tenderness/hematoma
- normal prostate
- bleeding from urethra
Findings:
- may not complain of inability to urinate
- delayed presentation can be complicated by sepsis 2/2 to extravasation of urine into scrotum, abdominal wall
Tx:
- immediate surgical repair
Posterior urethra injuries
- where is the injury?
- how does it happen?
- findings
Injury to prostatic and membranous urethra
Usually assoc w/ fractures of pelvis
Exam:
- blood at urethral meatus
- high riding prostate (b/c displaced by pelvic hematoma)
- scrotal hematoma
- pelvic fracture
Findings:
- suprapubic pain
- inability to void following major trauma
Tx step 1:
- retrograde urethrogram
Where are most clavicular fractures?
In middle 1/3 of bone
Shoulder of affected side is displaced inferiorly and posteriorly
Clavicular fracture ID’d - what do next?
Careful neurovascular exam b/c clavicle close to subclavian A and brachial plexus
Angiogram if hear bruit in clavicle area
Fixing clavicle fractures
middle 1/3 –> nonoperative w/ brace, rest, ice
distal 1/3 –> open reduction + internal fixation
Thessaly test
Pain or locking w/ internal and external rotation of knee while standing on 1 leg w/ knee flexed to 20 degrees
McMurray test
Painful clock w/ passive flexion and extension of knee w/ examiner’s thumb and index finger placed on medial and lateral joint lines
Apley test
Pain w/ pressing heel toward floor while internally and externally rotating foot w/ knee flexed to 90 degrees
What to use to dx meniscal injuries?
MRI
Manage traumatic spinal cord injuries
1) Hemodynamically stabilized
2) proper airway management
3) stabilize neck until spine injury r/o
4) Urinary catheter placement to assess urinary retention and prevent bladder distention and damage
Fat embolism signs
Severe respiratory distress - increasing diffuse b/l pulm infiltrates on serial CXR Petechial rash Subconj hemorrhage Tachycardia Tachypnea Fever
Dx w/ fat droplets in urine or intraarterial fat flobules on fundoscopy
Happens 12-72 hrs after fracture injrueis
Tx fat embolism
Respiratory support
Controversial:
- heparin
- steroids
- LMW dexxtran
Kidney stones in Chrons disease?
Hyperoxaluria
Usually Ca binds oxalate in gut and prevents absorption
In fat malabsorb from Crohns, Ca bound by fat and oxalate is unbound and free to absorb in blood
ALSO, failure of reabsorb bile salts can damage colonic mucosa and cause more oxalate absorption
What kinds of catheters have higher rate of infection?
Femoral > subclavian
Usually due to Staph but femoral catheters can also be due to Gm - bacteria
Dx ACL tears?
Lachman’s test (like anterior drawer but 30 degree flexion)
Anterior drawer test
Pivot shift test
What is GCS used for?
Predicts prognosis of coma and other medical conditions (bacterial meningitis, TBI, subarachnoid hemorrahage)
NOT used to diagnose coma
Findings used to dx coma
Impaired brainstem activity (disruption of pupillary light, Extraocular, and corneal reflexes)
Motor dysfunction (decorticate or decerebrate posturing)
Impaired level of consciousness
Slipped capital femoral epiphysis
Displacement of femoral head on femoral neck b/c disrupt proximal femoral growth plate
Usually seen in obese adolescent boys
- obesity increases shear stress and physis (physical junction b/n femoral head and neck) fractures and femoral head slips POSTERIORLY + MEDIALLY relative to neck
PE
- loss of abduction and internal rotation
- external rotation of thigh while hip flexed
Tx: surgical pinning of slipped epiphysis to lessen risks of avascular necrosis or chondrolysis
Most common carpal bone fracture
Scaphoid
ON radial side of wrist
Usually get max pain in anatomic snuffbox, min dec ROM, decreased grip strength, possible swelling
Suspected scapohid fracture but not present on xray - what do you do?
Can take up to 10 days to show abnormalities on xrays
Immobilize wrist w/ thumb spica cast for 7-10 days followed by repeating xrays
CT or MRI of wrist can distinguish b/n fracture and ligament injries
Needle shaped crystals on urinalysis + ileus - what do you do next/
CT scan of abdomen or intravenous pyelography
Probably have uric acid stones, not seen on xray
Ileus probably due to vagal rxn from ureteral colic - ileus over when ureterolithiasis is treated
Part of bladder that is covered by peritoneum and is most susceptible to rupture
Dome of bladder
Can get irritation of peritonitis and irritation of diaphragm
Most common site of extraperitoneal bladder rupture
Bladder neck
Ludwig angina
Rapidly progressive bilateral cellulitis of submandibular and sublingual spaces
Usually from infected 2nd or 3rd mandibular molar
Usually Strep and anaerobes
Sx: Fever Dysphagia Odynophagia Drooling --> due to swelling of submandibular space + posterior displacement of tongue
COD: asphyxiation
How does hearing loss happen in Paget’s?
Cochelar N damage
- enlargement of temporal bone –> impinge on internal auditory meatus
Carcinomas that love to spread hematogenously
RCC HCC Follicular thyroid carcinoma Choriocarcionma Prostate adenocarcionma
Opioid agonist
Activate all 3 receptors
Fentanyl
Morphine
Hydromorphone
Agonist-antagonist opioids
Mixed: Butorphanol, nalbuphine, pentazocine
- block mu but activate kappa receptor
Partial: Buphenorphine
- block kappa, weak mu receptor activator
Antagonist opioids
Antagonist at mu receptors
Naloxone
Naltrexone
Alvimopan
Methylnatrexone
Cancers w/ osteolytic lesions (and hypercalcemia of malignancy as a result!)
BLT with a Kosher Pickle, Mustard & Mayo
B = breast cancer L = lymphoma, lung cancer T = thyroid cancer K = kidney cancer P = prostate cancer M & M = multiple myeloma
How are opioids (morphine, hydromorphone, fentanyl) eliminated?
Renal
Hydromorphone is metabolized via glucuronidation (not lost as much w/ age) so can have inactive metabolite (vs morphine and fentanyl which are CYP metabolized so may have accumulation if CYP enzymes lost)
Acute limb ischemia
- signs
- Pallor
- Paresthesias
- Pain
- Pulselessness
- Poiklothermia
- Paresis/paralysis
3 layers of blood vessel
Adventita
Media
Intima
Adventitia is strongest
Time before acute limb ischemia causes necrosis of tissue
6 hrs
1/2 life of heparin
90 min
If rutherford classification I, what do you do?
Time to work up
+ heparin ASAP
If rutherford classification IIa, what do you do?
still have some time but need to be quicker than I
+ heparin asap
If rutherford classification IIb, what do you do?
Now have only 6 hrs before necrosis of tissue
- ASAP emergency
- very acute emergency
+ heparin
Rutherford classification
Urgency need to tx acute limb ischemia
o I = No pulse, OK sensory and motor
o IIa = No pulse, no sensory, OK motor
o IIb = No pulse, no sensory, no motor
o III = Rigor (dead extremity)
If rutherford classification III, what do you do?
DO NOT reperfuse! Will get reperfusion injury from all the dead cell released products
Get an amputation
1st sign of compartment syndrome
paresthesia in 1st web space
- deep peroneal N innervates this and is in ANTERIOR compartment
REMEMBER: compartment syndrome is a clinical diagnosis
Compartment of leg most susceptible to compartment syndrome
Anterior compartment
Risks after vascular surgery after acute limb ischemia blood flow restoration?
Reperfusion injury
Edema
Compartment syndrome
Pulse volume recording
BP cuffs on whole leg (Thigh, calf, foot)
Increase cuff pressure to 60 mmHg to obstruct venous flow
Will give tracing of pulses
Height of tracing will tell you amount of blood flow going through.
Can tell you ~where obstruction is
What is utility of PVR?
Ex: if diabetic, can have falsely elevated ABI b/c not compressible vessels (they are calcified)
PVR will eliminate that problem with ABI
When do surgery on claudication of leg?
If have extreme impact on lifestyle (QOL) if there is relatively low risk
What are the components of a duplex ultrasound?
B mode imaging (architecture of vessels)
• Can see stenotic area
Color flow (velocities), in cm/s
• Will have increased velocity in stenotic areas
• Want to compare the increased velocity area with areas before and after – how hemodynamically unstable is this area based on how much increase in velocity?
Glasgow Coma Scale (GCS)
Eyes (4) 1 - No eye opening 2 - Eye opening in response to pain stimulus 3 - Eye opening to speech 4 - Eyes opening spontaneously
**if awaken sleeping pt w/ speech, this is a 4, not a 3
Motor (6)
1 - No motor response
2 - Decerebrate
3 - Decorticate
4 - Flexion/Withdrawal to pain (flexion of elbow, supination of forearm, flexion of wrist when supra-orbital pressure applied ; pulls part of body away when nailbed pinched)
5 - Localizes to pain.
6 - Obeys commands (thumbs up, wiggle toes)
Verbal (5)
1 - No verbal response
2 - Incomprehensible sounds. (Moaning but no words.)
3 - Inappropriate words. (Random or exclamatory articulated speech, but no conversational exchange)
4 - Confused. (The patient responds to questions coherently but there is some disorientation and confusion.)
5 - Oriented. (AAOx3)
Decerebrate posturing
extensor posturing: abduction of arm, external rotation of shoulder, supination of forearm, extension of wrist
Decorticate posturing
flexor posturing: adduction of arm, internal rotation of shoulder, pronation of forearm, flexion of wrist
CPP =
MAP - ICP
CPP should be > 50
If CPP too high, increase risk of HTN hemorrhage
- cerebral blood flow vs. CPP should be constant ratio
What happens when you have too much CO2 in brain?
Increase blood flow for O2 delivery, increase pressure in brain
What’s the most sensitive test for weakness?
Pronator drift
Supinator muscle is smallest muscle in arm –> if have weakness, will pronate drift down
Hoffman’s reflex
Flick middle finger, thumb will move up and down