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Audio-Digest FoundationGeneral Surgery


Volume 55, Issue 12
June 21, 2008

The following is an abstracted summary, not a verbatim transcript, of the lectures/discussions on this audio program. If, after reviewing this written summary, you would like to hear the contents and/or earn CME/CE credit:

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TRAUMATIC GI INJURIES

From the 36th Annual Phoenix Surgical Symposium, sponsored by Banner Health and the Phoenix Surgical Society

Gregory J. Jurkovich, MD, Professor of Surgery, University of Washington School of Medicine, and Chief of Trauma Services, Harborview Medical Center, Seattle, WA




Educational Objectives

The goal of this program is to improve the diagnosis and management of duodenal, liver, and portal triad injuries. After hearing and assimilating this program, the clinician will be better able to:
1. Recognize the challenges of diagnosing blunt and penetrating duodenal injuries and explain the consequences of delayed diagnosis.
2. Describe the surgical options for managing duodenal trauma, including preferred procedures for treating simple and complex injuries.
3. Discuss the role of nonoperative management (including its advantages and potential complications) in the treatment of liver trauma.
4. Follow the recommended steps for managing the liver trauma patient who presents with hemoperitoneum and hemodynamic instability.
5. Identify the patient with juxtahepatic venous injury.

Faculty Disclosure

In adherence to ACCME Standards for Commercial Support, Audio-Digest requires all faculty and members of the planning committee to disclose relevant financial relationships within the past 12 months that might create any personal conflicts of interest. Any identified conflicts were resolved to ensure that this educational activity promotes quality in health care and not a proprietary business or commercial interest. For this program, the faculty and the planning committee reported nothing to disclose.

Acknowledgements


Dr. Jurkovich spoke at the 36th Annual Phoenix Surgical Symposium, held February 13-16, 2008, in Phoenix, AZ, and sponsored by Banner Health and the Phoenix Surgical Society. The Audio-Digest Foundation thanks Dr. Jurkovich, Banner Health, and the Phoenix Surgical Society for their cooperation in the production of this program.


DUODENAL INJURIES
Case example: 38-yr-old man with single gunshot wound to right upper quadrant of abdomen; patient intubated in field and arrives at emergency department (ED) neither hypotensive nor tachycardic; Glasgow Coma Scale (GCS) score of 3; initial work-up—chest x-ray unremarkable; abdominal x-ray demonstrates bullet overlying transverse process of L2 vertebra; single-shot intravenous pyelography (IVP) shows 2 functioning kidneys and no blood in urine; speaker strongly advocates taking this type of patient directly to operating room (OR); treatment
Duodenal injuries: relatively uncommon (only 3%-5% of cases of abdominal trauma include injury to duodenum); majority due to penetrating wounds, but cases of blunt duodenal injury exist; such cases particularly difficult to manage (often seen in cases of direct or isolated blow to epigastrium, eg, compression against steering wheel, direct blow or kick to abdomen, blow from handlebar in bicycle accident)
Diagnosis: penetrating injury—diagnosis made by laparotomy (operate on patient and look for duodenal injury with good mobilization; follow trajectory of penetrating missile or knife blade from beginning to end and look for wounds in between); blunt trauma—diagnosis somewhat more difficult; physician often has to perform laparotomy to look for injury; although problematic, prompt diagnosis of duodenal injury critically important (studies show delay in diagnosis dramatically increases morbidity and mortality)
Signs of injury and challenges of diagnosis: presence of retroperitoneal air, loss of psoas shadow, and scoliosis key signs of duodenal injury on plain x-ray, but present in <30% of cases; computed tomography (CT) can accurately detect retroperitoneal duodenal rupture only (even with intravenous [IV] and oral contrast) in 50% of cases; diagnostic peritoneal lavage (DPL) and focused assessment by sonography in trauma (FAST) examination less reliable in detecting isolated injuries (however, DPL can sometimes be helpful, since 40% of duodenal injuries associated with other intra- abdominal injuries that result in positive findings); presence of amylase in lavage fluid may occasionally be helpful as indicator of possible duodenal injury (but serum amylase elevated in only 50% of patients, so not completely reliable sign)
Principles of operative management: first step to stop bleeding; next, control contamination; lastly, make definitive repair; type of repair dependent on patient’s overall hemodynamic status, time since injury, and location and severity of injury; surgical options—primary repair; primary repair buttressed with overlying omental or serosal flap; duodenal segmental resection and primary anastomosis; delayed repair; complicated repair (eg, panctreaticoduodenectomy); most mild duodenal injuries can be effectively managed with primary repair or resection and primary anastomosis; more severe injuries require more complex treatment strategies
Determinants of injury severity: mild—low velocity mechanism of injury (eg, stab wound); size <75% of duodenal wall; distal location; time to repair <24 hr; no common bile duct injury; severe—blunt or missile (gunshot) injury; complete transection of wall; proximal location; time to repair >24 hr; common bile duct injury
Role of more complicated repairs: in study of 10 patients with duodenal injury, 6 had primary repair, 1 had primary anastomosis, and 3 required slightly more complex repair (not required very often, but sometimes necessary); in Pennsylvania study, 16 of 30 patients with blunt injury had primary repair, others required more complex repairs; in Western Trauma Association (WTA) multi-institutional trial, 90 of 164 patients had primary repair; 27 underwent pyloric exclusion; “a few” had Whipple procedures, duodenojejunostomies or duodenostomies; one patient had formal diverticulization, and one had drainage of hematoma alone; most common approach to complex repair pyloric exclusion, followed by anastomosis of duodenum or jejunum up to transected duodenal limb
Speaker’s approach to pyloric exclusion: make anterior gastrotomy large enough to insert Babcock clamp; reach in and grab pylorus with Babcock clamp; pull pylorus out through hole, hold it out, and whip-stitch pylorus closed with size 0 Maxon polydioxanone (PDS) absorbable suture; tie knot on running stitch, and drop pylorus back in (totally occludes pylorus for 3 wk to 3 mo; all open up eventually); afterwards, perform gastrojejunostomy to protect injury and repair from stomach reflux; almost always necessary to insert gastrostomy tube for decompression and distal feeding jejunostomy tube to provide enteral nutrition
Role of tube duodenostomy: in general (when doing primary repair), lateral tube duodenostomy not required; when performing pyloric exclusion, tube duodenostomy required, but only for distal feeding jejunostomy; in WTA study, 60% of patients who had duodenostomy developed tube-related complications (authors concluded no apparent role for tube duodenostomy); nevertheless, still some proponents of procedure (review of 8 retrospective series by JD Hasson et al; tube used for retrograde decompression in majority of cases; authors found duodenal fistula and overall mortality rates lower in patients who had retrograde jejunostomy tube drainage than in patients who did not have decompression)
Comments: no role for “sucker patch” or decompressive ostomy patch in managing duodenal injuries (not recommended; data show that, in cases of gunshot wounds, technique associated with 64% incidence of abdominal sepsis and 27% mortality rate; in cases of stab wounds, technique associated with 50% incidence of abdominal sepsis)
Conclusions: primary repair preferred and most common procedure for managing duodenal injuries (even when duodenal wall totally transected); in patients with mild injuries, only primary repair required; lateral tube duodenostomy not required; pyloric exclusion best choice for adjunctive procedure (simplest; low morbidity; essentially reverses itself; allows surgeon to put in retrograde duodenostomy decompression tube as well as feeding tube; protects complicated anastomosis); in highest risk patients, speaker performs pyloric exclusion with retrograde decompression of duodenum
LIVER AND PORTAL TRIAD INJURIES: OPERATION, EMBOLIZATION, AND OBSERVATION
Introduction: liver injuries common (can occur in up to 50% of cases of blunt abdominal trauma); 50% of blunt liver injuries result from injured party being unrestrained (ie, not wearing seat belt) during motor vehicle accident (MVA); data suggest that approach to management of liver injuries changes approximately every 50 yr; currently, emphasis on damage control, although also option of primary control; among management issues, whether treatment should be operative or nonoperative; if operative, whether to do damage control or primary control; role of primary angiography and other adjuncts for enhancing coagulation (since hemorrhage and exsanguination leading causes of mortality in liver injuries) also at issue; historical background of liver injury management
Case examples: 37-yr-old man (pedestrian struck by car); 62-yr-old woman (unrestrained front seat passenger in T-bone MVA); 47-yr-old man (construction worker with blunt trauma [heavy wood plank jammed into abdomen])
Factors influencing management decisions: some suggestion that “lethal triad” of coagulopathy, hypothermia, and acidosis indication to quit operating and take different approach; when making decisions, take into account total amount of blood loss, severity of liver and other injuries, and amount of available resources
Comments: case examples illustrate level of judgment necessary when managing patients with liver injury; evolution of nonoperative management based primarily on ability of 3-D (or cross-sectional) imaging to accurately represent extent of injury, and to more accurately exclude associated injuries; historically, many patients with blunt abdominal trauma (up to 85% of patients with liver injuries) who underwent surgery had “relatively negative” or nontherapeutic and/or unhelpful laparotomies; therefore, nonoperative management becoming increasingly more common, particularly as researchers have looked at high mortality rates associated with operating on otherwise hemodynamically stable liver trauma patients; WTA multi-institutional trial found mortality could be lowered for all grades of injury through nonoperative management
Circumstances in which nonoperative management contraindicated: patient who is clearly hemodynamically unstable requires intervention (may be angiography and embolization, but only effective when dealing with arterial injury, which is relatively uncommon in liver trauma); perforated colon or perforated bowel clear indication for operation; blushing or pooling of contrast on CT also warrants intervention (angiography at speaker’s institution); overall, patient’s physiology should determine type of management
Advantages of nonoperative management: fewer transfusions required; less intra-abdominal infection; lower mortality rate; successful in 85% of cases
Potential complications of nonoperative management: hemorrhage can occur 2 wk late in 3% of patients; biloma can develop in 3% of patients (often does not present until several days to weeks afterwards); abscess formation (in 1% of patients); missed other injuries (rare)
Risk factors for hepatic morbidity after nonoperative management: multi-institutional trial looked at delayed complications in patients with grades III, IV, and V liver injuries who had nonoperative management; demonstrated relationship between grade of injury and amount of shock (ie, number of blood units transfused), and probability of developing complications (eg, patients with grade IV injuries who required >20 U of blood had 50% complication rate); bleeding problems and abdominal compartment syndrome tend to occur early; bilomas and infection problems occur slightly later
Management of delayed hemorrhage: in hemodynamically unstable patient—requires abdominal exploration; in stable patient—repeat CT; if injury unchanged, look for another cause of hemorrhage; if injury worse or evidence of pooling of CT contrast, consider angioembolization or abdominal exploration
Follow-up after nonoperative management, and time to return to normal activities: no good objective data on length of time required for liver injury to heal; speaker’s protocol—in grade I, II, or III injuries, no follow-up imaging studies; patients allowed to return to normal activities in 6 wk; in grade IV and V injuries, speaker more hesitant; of course, any patient with unexpected change in clinical course requires repeat imaging study; if patient remains stable, protocol more nebulous; speaker obtains repeat CT 8 wk after injury only if patient has to resume sanctioned physical activities (and only in cases involving grade IV or V injuries)
Operative principles: help in OR—have retractor in place to help provide exposure; if unable to see beyond dome of liver and need to access that area, sternotomy “totally fine extension” for getting above liver; requires blood bank that is prepared; extra hands if necessary; primary tenets of surgery—first, stop bleeding; second, control contamination; lastly, be prepared for bile leak that may occur
Operative approach: hemoperitoneum with instability—options include compression for resuscitation (ie, manually pushing liver back to its preinjury anatomic location and holding it together while anesthesia provider helps with resuscitation; done to achieve hemodynamic stability); if bleeding has stopped, surgeon can pack around liver and decide whether to operate or curtail procedure; if simple packing does not control bleeding, next step Pringle maneuver (inflow occlusion); if bleeding then stops, option available of performing hepatotomy and repair (debridement of devitalized tissue, omental drainage, and packing best approach); if bleeding continues, consider retrohepatic vena cava or hepatic vein injury
Bile leaks: once repair done and liver and bleeding sites under control, important to look for bile leaks (postoperative leaks extremely difficult to manage); pack omentum after bile leaks repaired, adequately drain with close-suction drains, and exit procedure
Juxtahepatic venous injuries: extremely lethal; produce rapid intra-operative exsanguination; wide exposure and direct venous repair necessitated in most cases, but if bleeding can be stopped with compression, occasionally these injuries (particularly retrohepatic vena caval injuries) seal on their own; may occasionally have opportunity to put in venous stent to transgress injury (fairly new technique and not well explored, but remains option)
Atriocaval shunts: at one time, 132 patients recorded using atriocaval shunts (with 23 survivals); technique has largely fallen out of favor
Vascular isolation: requires venovenous bypass (useful technique; can be done percutaneously); allows for controlled operative exposure (must be set up early; difficult to achieve)
Establishing need for hepatic resection: primarily at times when injury “has virtually done the resection itself”; ie, when there has been total destruction of parenchyma and extent of injury precludes packing; cannot reconstruct liver in these cases; resection sole mode of hemorrhage control
Role of damage control: damage control not one-time event; can pack injuries multiple times (and this can be done within one setting, eg, OR); initial packing controls bleeding in 50% of patients; repacking controls bleeding in another 50%; third attempt at packing controls 75% of those who continue to bleed; after that, diminished returns (physician should consider some other approach); abscess rate high after packing (10%-30%; related to number of days packs remain in place; for every additional day after 3 days, complication rate increases by 10%)
Concluding comments: exsanguination primary cause of death from liver injury; therefore, number one priority to control bleeding; role of adjunctive therapies (eg, recombinant factor VIIa) remains controversial, particularly in liver trauma, but speaker expects they will continue to be explored

Suggested Reading

Asensio JA et al: Pancreaticoduodenectomy: a rare procedure for the management of complex pancreaticoduodenal injuries. J Am Coll Surg 197:937, 2003; Biffl WL et al: Venovenous bypass and hepatic vascular isolation as adjuncts in the repair of destructive wounds to the retrohepatic inferior vena cava. J Trauma. 45:400, 1998; Bozkurt B et al: Operative approach in traumatic injuries of the duodenum. Acta Chir Belg 106:405, 2006; Buckman RF: Injuries of the inferior vena cava. Surg Clin North Am 81:1431, 2001; Christmas AB et al: Selective management of blunt hepatic injuries including nonoperative management is a safe and effective strategy. Surgery 138:606, 2005; Coimbra R et al: Nonoperative management reduces the overall mortality of grades 3 and 4 blunt liver injuries. Int Surg 91:251, 2006; Cox JC et al: Routine follow-up imaging is unnecessary in the management of blunt hepatic injury. J Trauma 59:1175, 2005; Degiannis E, Boffard K: Duodenal injuries. Br J Surg 87:1473, 2000; Fang JF et al: Surgical treatment and outcome after delayed diagnosis of blunt duodenal injury. Eur J Surg 165:133, 1999; Gourgiotis S et al: Operative and nonoperative management of blunt hepatic trauma in adults: a single-center report. J Hepatobiliary Pancreat Surg 14:387, 2007; Huerta S et al: Predictors of morbidity and mortality in patients with traumatic duodenal injuries. Am Surg 71:763, 2005; Jurkovich GJ: “Duodenum and Prancreas,” in Trauma (4th ed), McGraw-Hill, New York: 735, 2000; Jurkovich GJ et al: Portal triad injuries. J Trauma 39:426, 1995; Kozar RA et al: Risk factors for hepatic morbidity following nonoperative management: multicenter study. Arch Surg 141:451, 2006; Lee SK, Carrillo EH: Advances and changes in the management of liver injuries. Am Surg 73:201, 2007; Lee TY et al: Anatomic resection for severe blunt liver trauma. Int Surg 90:266, 2005; Liu PP et al: Use of a refined operative strategy in combination with the multidisciplinary approach to manage blunt juxtahepatic venous injuries. J Trauma 59:940, 2005; Lopez PP et al: Recent trends in the management of combined pancreatoduodenal injuries. Am Surg 71:847, 2005; Nicoluzzi JE et al: Hepatic vascular isolation in treatment of a complex hepatic vein injury. J Trauma 63:684, 2007; Pearl J et al: Traumatic injuries to the portal vein: case study. J Trauma 56:779, 2004; Phelan H et al: Retrohepatic vena cava and juxtahepatic venous injuries. South Med J 94:728, 2001; Rickard MJ et al: Pancreatic and duodenal injuries: keep it simple. ANZ J Surg 75:581, 2005; Seamon MJ et al: A ten-year retrospective review: does pyloric exclusion improve clinical outcome after penetrating duodenal and combined pancreaticoduodenal injuries? J Trauma 62:829, 2007; Talving P et al: Civilian duodenal gunshot wounds: surgical management made simpler. World J Surg 30:488, 2006; Trunkey DD: Hepatic trauma: contemporary management. Surg Clin North Am 84:437, 2004; Velmahos GC et al: Complex repair for the management of duodenal injuries. Am Surg 65:972, 1999; Velmahos GC et al: Safety of repair for severe duodenal injuries. World J Surg 32:7, 2008; Wahl WL et al: Diagnosis and management of bile leaks after blunt liver injury. Surgery 138:742, 2005; Yutan E et al: Blunt duodenal rupture: complementary roles of sonography and CT. AJR Am J Roentgenol 175:1600, 2000.

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