Background: Bacteremia occurs frequently in cholangitis, but the incid
ence of bacteremia in acute cholecystitis has not previously been exam
ined. Methods: Seventy-eight cases (46 men and 32 women; mean age, 63
+/- 10 years) of acute cholecystitis with positive blood cultures were
analyzed for clinical manifestation, bacteriology, and what consequen
ces ensued. Seventy-eight non-bacteremic cholecystitis patients, match
ed for age and sex, served as the control group. Results: The prevalen
ce of bacteremia in acute cholecystitis was 7.65% (78 of 1020). A sing
le microorganism was isolated from the blood and bile in 87.2% and 27.
3%, respectively. The commonest organisms were Escherichia coli and Kl
ebsiella pneumoniae. The source of bacteremia could be identified from
the infected bile in 80% of cases. Compared with the non-bacteremia g
roup, significant increases in liver biochemical test results (asparta
te and alanine aminotransferases and bilirubin, and so forth), more co
mplications (acute renal failure and septic shock), and higher mortali
ty (9.0%) were found in the bacteremic group. Conclusion: Acute cholec
ystitis is not often complicated by bacteremia, but when bacteremia is
present, morbidity and death more consistently ensue.