Trauma Flashcards
what is a pneumothorax?
injury to the lung, resulting in release of air into the pleural space between the normally apposed parietal and visceral pleura
how is a pneumothorax diagnosed?
tension pneumothorax is a clinical diagnosis
- dyspnea, JVD, tachypnea, anxiety, pleuritic chest pain, unilateral decreased or absent breath sounds, tracheal deviation away from affected side, hyper resonance on affected side
what is treatment of a tension pneumothorax?
rapid thoracotomy incision or immediate needle decompression in the 2nd ICS, midclavicular line
what is the medical term for a ‘sucking chest wound’?
open pneumothorax
what does a pneumothorax look like on cxr?
loss of lung markings
what is flail chest?
two separate fractures on three or more consecutive ribs
how is flail chest diagnosed?
flail segment of chest wall that moves paradoxically
- sucks in with inspiration and pushes out with expiration opposite the rest of the chest wall
what is the major cause of respiratory compromise with flail chesT?
underlying pulmonary contusion
what is the treatment of flail chest?
intubation with positive pressure ventilation and PEEP PRN
what is cardiac tamponade?
bleeding into the pericardial sac, resulting in constriction of heart, decreasing inflow and resulting in decreased cardiac output (the pericardium does not stretch)
what are the signs/symptoms of cardiac tamponade?
tachycardia/shock with Beck’s triad, pulsus paradoxes, Kussmaul’s sign
define Beck’s triad
hypotension
muffled heart sounds
JVD
define Kussmaul’s sign
JVD with inspiration
how is cardiac tamponade diagnosed?
ultrasound (echocardiogram)
what is the treatment of cardiac tamponade?
pericardial window - if blood returns then median sternotomy to rule out and treat cardiac injury
how is a massive hemothorax diagnosed?
unilaterally decreased or absent breath sounds
dullness to percussion
cxr, CT scan, chest tube output
what is the treatment for massive hemothorax?
volume replacement
tube thoracostomy
removal of the blood
what are the indications for emergent thoracotomy for hemothorax?
massive hemothorax =
- > 1500cc blood on initial placement of chest tube
- persistent >200cc bleeding via chest tube per hour for 4hrs
what is the trauma resuscitation fluid of choice?
lactated ringer’s solution
- isotonic
- lactate helps buffer the hypovolemia-induced metabolic acidosis
what are the contraindications to placement of a Foley?
signs of urethral injury:
- severe pelvic fracture in men
- blood at the urethral meatus (penile opening)
- ‘high-riding’, ‘ballot able’ prostate (loss of urethral tethering)
- scrotal/perineal injury/ecchymosis
what test should be obtained prior to placing a Foley catheter if urethral injury is suspected?
retrograde urethrogram
how is gastric decompression achieved with a maxillofacial fracture?
oral gastric tube (OGT)
- not with NGT because the tube may perforate through the cribriform plate into the brain
why look in the ears?
hemotympanum is a sign of basilar skull fracture
otorrhea is a sign of basilar skull fracture
examination of what part of the trauma patient’s body is often forgotten?
patient’s back
what are the typical signs of basilar skull fracture?
raccoon eyes, battle’s sign, clear otorrhea or rhinorrhea, hemotympanum
what diagnosis in the anterior chamber must not be missed on the eye exam?
traumatic hyphema
- blood in the anterior chamber of the eye
what potentially destructive lesion must not be missed on the nasal exam?
nasal septal hematoma
- hematoma must be evacuated
- if not, it can result in pressure necrosis of the septum
what is the best indication of a mandibular fracture?
dental malocclusion
what is the best way to diagnose or rule out aortic injury?
CT angiogram
what must be considered in every penetrating injury of the thorax at or below the level of the nipple?
concomitant injury to the abdomen
what is the significance of subcutaneous air?
indicates PTX until proven otherwise
what is the seatbelt sign?
ecchymosis on lower abdomen from wearing a seatbelt
what must be documented from the rectal exam?
sphincter tone (indication of spinal cord function), presence of blood (indication of colon or rectal injury), prostate position (indication of urethral injury)
what is the ‘halo’ sign?
CSF from nose/ear will form clear ‘halo’ around the blood on a cloth
what complication after prolonged ischemia to the lower extremity must be treated immediately?
compartment syndrome
what is the treatment for compartment syndrome?
fasciotomy
what injuries must be suspected in a trauma patient with a progressive decline in mental status?
epidural hematoma, subdural hematoma, brain swelling with rising ICP
- hypoxia/hypotension must be ruled out
what depth of neck injury must be further evaluateD?
penetrating injury through the platysma
what is the neck trauma zone III?
angel of mandible and up
what is the neck trauma zone II?
angle of the mandible to the cricoid cartilage
what is the neck trauma zone I?
below the cricoid cartilage
how do most surgeons treat neck trauma zone III?
selective exploration
how do most surgeons treat neck trauma zone II?
surgical exploration vs. selective exploration
how do most surgeons treat neck trauma zone I?
selective exploration
what is selective exploration?
based on diagnostic studies that include A-gram or CT A-gram, bronchoscopy, esophagoscopy
what are the signs of a laryngeal fracture?
subcutaneous emphysema in neck
altered voice
palpable laryngeal fracture
what is the treatment of rectal penetrating injury?
diverting proximal colostomy
closure of perforation
presacral drainage
what is the treatment of exztraperitoneal minor bladder rupture?
‘bladder catheter’ drainage and observation
intraperitoneal or large bladder rupture requires operative closure
what intra-abdominal injury is associated with seatbelt use?
small bowel injuries
what is the treatment of extensive irreparable biliary, duodenal, and pancreatic head injury?
trauma whipple
what is the most common intra-abdominal organ injured with penetrating trauma?
small bowel
what is the treatment of penetrating injury to the colon?
if in shock, resection and colostomy
if stable, primary anastomosis/repair
what is the treatment of small bowel injury?
primary closure or resection and primary anastamosis
what is the treatment of minor pancreatic injury?
drainage
what is the most commonly injured abdominal organ with blunt trauma?
liver
what is the treatment for significant duodenal injury?
pyloric exclusion
- close duodenal injury
- staple off pylorus
- gastrojejunostomy
what is the treatment for massive tail of pancreas injury?
distal pancreatectomy
what is the ‘lethal triad’?
ACH
- acidosis
- coagulopathy
- hypothermia
which lab tests are used to look for intra-abdominal injury in children?
LFTs = elevated AST/ALT
what is the treatment of human and dog bites?
leave wound open, irrigation, antibiotics
what is sympathetic ophthalmia
blindness in one eye that results in subsequent blindness in the contralateral eye (autoimmune)
what is the usual presentation of an anterior hip dislocation?
externally rotated with anterior hip fullness
what drug is used to treat a brown recluse spider bite?
dapsone
what is the correct diagnosis for: coiled NGT int he left pleural cavity after blunt trauma?
diaphragm rupture
what is the correct diagnosis for: blunt trauma patient with GCS <8 and otorrhea?
basilar fracture
what is the correct diagnosis for: 20yo male s/p baseball bat to the head, arrives in a coma; CT scan reveals a lens shaped (lenticular) hematoma next to inner table of skull?
epidural hematoma
what is the correct diagnosis for: 44yo male s/p fall from a ladder presents with GCS of 5; CT scan reveals a crescent-shaped hematoma next to inner table of skull?
subdural hematoma
what is the correct diagnosis for: trauma patient with increasing JVD with inspiration?
cardiac tamponade (Kussmaul’s sign)
what is the correct diagnosis for: trauma patient with hypertension and bradycardia?
Cushing’s response to increased ICP
what is the correct diagnosis for: trauma patient with hypotension and bradycardia?
spinal cord injury
what is the correct diagnosis for: 28yo woman involved in high-speed, side-impact MVC; stable vital signs; cxr reveals widened mediastinum?
thoracic aortic injury
what is the correct diagnosis for: 21yo man involve din high-speed MVC with obvious unstable pelvis, gross blood from the urethral meatus, high-riding prostate on rectal exam?
urethral injury
what is the correct diagnosis for: 45yo woman involved in high-speed MVC complains of abdominal pain and shortness of breath; decreased breath sounds on the left; cxr reveals the NGT coiled up in the left chest?
ruptured left diaphragm
what is the correct diagnosis for: 56yo involved in high speed MVC complains of severe shortness of breath; on exam, left chest wall moves inwards not outwards on inhalation?
flail chest - paradoxic respirations
what is the correct diagnosis for: 67yo involve din a high-speed MVC presents with a GCS of 5, bilateral periorbital ecchymosis, left mastoid ecchymosis, and clear fluid draining from the left ear?
basilar skull fracture - Battle’s and raccoon sign
what is the correct diagnosis for: 50yo female s/p high speed MVC with rib fractures and flail chest develops hypoxia 12hrs later in the ICU; cxr shows no pneumo- or hemothorax but reveals pulmonary infiltrates/congestion?
pulmonary contusion
what is the correct diagnosis for: 29yo s/p MVC arrives with hypotension, sats of 83%, JVD, decreased breath sounds on L?
tension pneumothorax
what is the correct diagnosis for: 55yo male s/p 3-story fall reveals the NGT coiled up on chest on cxr?
diaphragm injury
what is the correct diagnosis for: 22yo man s/p MVC with transection of right optic nerve; progresses to blindness in the contralateral left eye 3wks later?
sympathetic ophthalmia
what is the correct diagnosis for: 8yo male s/p bicycle accident with handle bar to abdomen with duodenal hematoma?
NGT, TPN and observe
may take weeks to open up
what is the correct diagnosis for: 30yo male involved in a skiing collision with a tree, arrives in the ER awake (GCS of 15) but then gets confused and next goes unresponsive (GCS of 3)?
‘lucid interval’ of an epidural hematoma
name the diagnostic modality for: 47yo female s/p MVC with a seatbelt sign (ecchymosis) on the left neck?
CT angiogram
name the diagnostic modality for: 22yo male s/p gunshot sound to the umbilicus; bullet is int he spine on X-rays?
exploratory laparotomy