Traumatic and postoperative ischemic liver necrosis: causes, risk factors and treatment.
BACKGROUND
To study the cause and outcome of ischemic liver necrosis and suggest treatment of these patients.


METHODS
Retrospective study of 13 patients with ischemic liver necrosis treated at our departments from 1990 until 1997.


RESULTS
Ischemic liver necrosis was caused by general hypoxia (n = 1) or acute arterial occlusion (n = 12) of the celiac and superior mesenteric artery (SMA, n = 3), proper hepatic artery (PHA, n = 1), right hepatic artery (RHA, n = 2), left hepatic artery (LHA, n = 2) and intrahepatic vessels (n = 4). Six of the cases were related to surgical procedures, 5 of these (38%) were unintended arterial injuries after biliary surgery. Ten patients (77%) had risk factors contributing to the development of liver necrosis: septicemia (n = 4), jaundice and septicemia (n = 2), shock and hypoxia (n = 3) and alcoholic cirrhosis (n = 1). Five patients (38%) needed resection of the liver necrosis due to infected necrosis. Three patients (23%) died; two of these had celiac/SMA occlusion. One died due to complete gastrointestinal ischemia and severe lactacidosis, two died of multiorgan failure after bile leakage and septicemia.


CONCLUSIONS
Ischemic liver necrosis is mainly caused by arterial occlusion due to arteriosclerosis, arterial transection during biliary surgery or blunt liver trauma, and seldom occurs without additional risk factors. 50% of the patients develop infected necrosis and need liver resection. Patients with sterile necrosis may recover without surgical procedures of the liver. The mortality in patients with central (celiac/SMA) and peripheral (CHA, PHA, RHA, LHA, intrahepatic branches) occlusions was 67% (2/3) and 11% (1/9), respectively.
Røkke
O
O
Department of Surgery, Haukeland University Hospital, Bergen, Norway. olro@haukeland.no
Nesvik
I
I
Søndenaa
K
K
D000328:Adult; D000368:Aged; D005260:Female; D006498:Hepatectomy; D006801:Humans; D007511:Ischemia / Q000473:pathology / Q000601:surgery*; D008099:Liver / Q000098:blood supply* / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D009336:Necrosis; D012189:Retrospective Studies; D012307:Risk Factors