This preview shows page 1. Sign up to view the full content.
Unformatted text preview: CaseBased Abdominal CaseBased Abdominal Trauma
Dr. Maggio and Ellen Morrow 1 case
st The patient is a 24yearold female rollover motor vehicle accident with GCS approximately 6 to 8 on scene. Her car rolled down a cliff, alcohol was involved. The patient was the unrestrained driver and was ejected. She was unresponsive in the field. Trauma assessment
Trauma assessment 2/28 7:25 pm
P 97 86/50 100%
Exam: scalp lac, facial abrasion and R orbital trauma, abdomen “normal” Blunt Abdominal Trauma
Blunt Abdominal Trauma CT Indications Spinal cord injury, GCS < 9
Significant abdominal pain or tenderness
Nonramus pelvic fracture
Significant chest trauma
Unexplained tachycardia/hypotension (with normal ultrasound) Ultrasound Indications
Hypotension CT Abd Pelvis
CT Abd Pelvis Liver injuries
Liver injuries May be most common (vs spleen) in blunt abd trauma
95% of grade 13 can be managed nonop If there is extravisation, consider angio or OR
Mobilize and feed when no evidence of bleed, no contact sports x 3 months postinjury CT criteria for staging liver trauma
CT criteria for staging liver trauma Grade 1 Subcapsular hematoma less than 1 cm in maximal thickness, capsular avulsion, superficial parenchymal laceration less than 1 cm deep, and isolated periportal blood tracking Grade 2 Parenchymal laceration 13 cm deep and parenchymal/subcapsular hematomas 13 cm thick Grade 3 Parenchymal laceration more than 3 cm deep and parenchymal or subcapsular hematoma more than 3 cm in diameter Grade 4 Parenchymal/subcapsular hematoma more than 10 cm in diameter, lobar destruction, or devascularization Grade 5 Global destruction or devascularization of the liver Grade 6 Hepatic avulsion Blunt Liver Injury: Treatment
Unstable patients: mandatory laparotomy
Stable patients: selective nonoperative
-Usually venous bleeding
-Grade I-III: 94% success w/ nonop
-Grade IV-V: 20% amenable to nonop tx
-HD stability, stable Hct, observation
-Complications: delayed hemorrhage, bile
leak, biloma, intra/peri hepatic abscess.
-If stable with ongoing bleeding angiographic embolization
angiographic Blunt Splenic Trauma: Adult Consider early operative intervention in patients with severe brain injury, multisystem injuries, or medical comorbidities. There is risk of transfusion reactions, disease transmission and infectious morbidity with blood transfusion. At present, there are no studies establishing the safety of LMWH in patients with blunt splenic injury and this choice is at the discretion of the attending surgeon. Splenectomized patients should undergo meningococcal, pneumococcal, and Hib vaccines. The optimal timing is 14 days postsplenectomy. If there is legitimate concern about a patient not returning, vaccinate prior to discharge. At present, there are no studies evaluating the immunologic function of the embolized spleen or the need for vaccination after splenic angioembolization. Plain film findings for spleen lac
Plain film findings for spleen lac The most common finding associated with splenic injury is left lower rib fracture. Rib fractures signify that adequate force has been transmitted to the LUQ to cause splenic pathology. Left lower rib fracture is present in 44% of patients with splenic rupture and necessitates further workup by abdominal CT. The classic triad indicative of acute splenic rupture (ie, left hemidiaphragm elevation, left lower lobe atelectasis, and pleural effusion) is not commonly present and should not be regarded as a reliable sign. However, any patient with apparent left hemidiaphragm elevation following blunt abdominal trauma should be considered to have splenic injury until proven otherwise. Grading spleen lacs
Grading spleen lacs Grade I Grade II Subcapsular hematoma of 1050% of surface area Intraparenchymal hematoma of less than 5 cm in diameter Laceration of 13 cm in depth and not involving trabecular vessels Grade III Subcapsular hematoma of less than 10% of surface area Capsular tear of less than 1 cm in depth Subcapsular hematoma of greater than 50% of surface area or expanding and ruptured subcapsular or parenchymal hematoma Intraparenchymal hematoma of greater than 5 cm or expanding Laceration of greater than 3 cm in depth or involving trabecular vessels Grade IV Laceration involving segmental or hilar vessels with devascularization of more than 25% of the spleen Grade V Shattered spleen or hilar vascular injury Blunt Abdominal Trauma
SPLENIC INJURIES Often arterial hemorrhage, therefore nonoperative
management less successful. Predictive factors for nonop success:
Predictive Localized trauma to flank/abdomen
No associated trauma precluding obs
Transfusion <4u prbcs
Grade I-III Grade IV-V: almost invariably require operative
Delayed hemorrhage (hours to weeks post-injury): 821% Renal Trauma Ten percent of patients with blunt abdominal trauma are found to have a urogenital injury.
Renal parenchymal injuries are the most common. Of these injuries, 75–90% may be classified as minor (Grade IIII) and require no intervention. Work up and treatment of the remaining “major” renal injuries has been controversial but there has been increasing interest in nonoperative management because of associated decreased transfusion requirement, shorter ICU stay, and increased salvage rate of the kidney. CT scan of the abdomen/pelvis is the test of choice for staging renal injury. Evaluation: Urine from the first post injury void should be evaluated on all patients with blunt abdominal trauma. Most patients with major renal trauma present with gross hematuria or hypotension, only 0.8 – 1.2% of major renal injuries have neither.
Microscopic hematuria (Greater than 5 RBC/HPF): Rarely associated with significant renal system injury. Patients require observation and repeat UA later in the ER or hospital to demonstrate resolution, in order to rule out other sources of hematuria such as malignancy.
Children with significant microscopic hematuria (Greater than 50 RBC/HPF) should undergo abdominal/pelvic CT with Cystogram as their risk for significant renal injury is higher than in adults.
Gross hematuria: Patients require abdominal/pelvic CT with cystogram if hemodynamically stable. A retrograde urethrogram should be performed if there is blood at the meatus. Blunt vs. penetrating: Blunt injury and stab wounds may be worked up in a similar fashion. Gunshot injuries often skip CT scan staging and require exploration because of hypotension, massive injury and delayed complications secondary to blast effect. Evaluation for Blunt Bowel or Mesenteric Injury
Evaluation for Blunt Bowel or Mesenteric Injury 2/29 1:20 AM A.V.
2/29 1:20 AM A.V. Went to IR for splenic artery embolization, L hepatic artery embolization, coil embolization of R renal artery, IVC filter
Received 3 units PRBC, HCT 28.6>36.4 2 case
nd 18M presents to trauma bay with multiple stab wounds. He is awake and c/o pain. HR 115 but otherwise VSS. Stab wounds are ~2cm in size, located below left costal margin, left flank, and left back. Truncal Stab Wounds The purpose of this algorithm is to guide the management of patients with stab wounds to the anterior abdomen, thoracoabdominal area, back, and flank.
Anterior abdominal stab wounds are defined as those anterior to the midaxillary line, from the xiphoid process to the pubic symphysis. Although optimal management of stable patients with AASW is debated, we have adopted a protocol of serial clinical assessments to determine the need for laparotomy. Retrospective review of RIH data suggests that this is a safe and effective approach in our institution.1
Thoracoabdominal stab wounds are defined as those between a circumferential line connecting the nipples and tips of the scapulae superiorly, and the costal margins inferiorly. Occult diaphragmatic injury is problematic in this patient group.2 We have selected DPL as the preferred diagnostic modality to exclude diaphragmatic injury, with a RBC cutoff of 5000/mm3 chosen to balance sensitivity and specificity.3
Back/Flank stab wounds are defined as those between the tips of the scapulae and posterior iliac crests, posterior to the midaxillary line. Physical examination alone is unreliable in this group, and DPL is unable to evaluate the retroperitoneum. Triple contrast (oral, rectal, and intravenous) CT has a sensitivity of 89100% and a specificity of 98100% in diagnosing intraabdominal and retroperitoneal injuries.47 Penetrating Abdominal Trauma
Stab Wounds: Stratification by loci
Thoracoabdominal Flank Anterior Abdominal
with serial PE
Mediastinal Penetrating Abdominal Trauma
Stab Wounds: Stratification by loci
Lower Chest Flank
CT Anterior Abdominal
with serial PE
Mediastinal 3 case
rd 60F pedestrian vs auto presents to trauma bay
Primary survey: airway clear, bilat BS, 1+ radial pulses
VS: HR 105, BP 115/70 3 case
rd Secondary survey: PMH: on coumadin for afib
Abd mild TTP lower abdomen, FAST , pelvis unstable. Pelvic fractures: challenges
Pelvic fractures: challenges Brisk bleeding with damage to surrounding vascular structures
High rate of associated extrapelvic injuries
Pelvic fxs + hypotension; mortality 36%
If laparotomy required, mortality 58%
Early mechanical stabilization and/or IR can help 3 case cont.
rd The patient goes to the OR for emergent exfix b/c they were hemodynamically unstable in the trauma bay. They have not yet had an abdominal CT scan. 3 case cont.
rd You decide to explore the abdomen. You find a large billowing pelvic hematoma. Retroperitoneal Retroperitoneal hematomas Blunt: explore all central (1) explore lateral or pelvic if expanding Penetrating: explore all References
References Biffl, Trauma Handbook, RIH Dept of Surgery, Division of Trauma and Surgical Critical Care.
Cindy Kin: Abdominal Trauma, SICU conference 1/8/08
Emedicine: liver and spleen trauma. ...
View Full Document
This note was uploaded on 12/24/2011 for the course STEP 1 taught by Professor Dr.aslam during the Fall '11 term at Montgomery College.
- Fall '11