Bleeding Varices in Cirrhosis Linked to Adrenal Insufficiency

[Guest guest]

Bleeding Varices in Cirrhosis Linked to Adrenal Insufficiency

A large percentage of patients with cirrhosis and variceal bleeding will mount an inadequate adrenalresponse with respect to their condition, and may be classified as having critical illness–related corticosteroidinsufficiency, reported Dr. Christos Triantos and his colleagues in the July issue of Clinical Gastroenterologyand Hepatology.Dr. Triantos, of the department of gastroenterology at the University Hospital of Patras, Greece, and his colleagues evaluated 20 patients with cirrhosis and bleeding varices and compared them with 74 controls: 14healthy volunteers and 60 patients who had stable cirrhosis and no bleeding.The participants were divided into five groups. Group 1 included 10 with variceal bleeding, who underwenta conventional-dose short synacthen test (SST), administered by injecting a 250-mcg dose ofthe synthetic adrenocorticotropin hormone synacthen.Serum cortisol concentration as measured

at baseline, 30 minutes, and 60 minutes.Group 2 comprised the remaining 10 patients with variceal bleeding, who underwent the low-dose short synacthen test (LDSST), in which a 1-mcg dose of synacthen was administered. Again, serum cortisol levels were measured at baseline, 30 minutes, and 60 minutes. Two hours later, these patients underwent the SST as well. Group 3 consisted of 14 healthy volunteers, who also underwent both tests. Group 4 comprised 50 stable(nonbleeding) cirrhosis patients who underwent the LDSST, and the fifth group comprised the remaining10 stable cirrhotics, who had the SST. Among nonstressed (nonbleeding) patients who had the LDSST,adrenal insufficiency was diagnosed when a peak cortisol level was 18 mcg/dL or less. In stressed (bleeding)patients, the definition of adrenal insufficiency was a peak cortisol level of less than 25 mcg/dL, or a maximum change of less than 9 mcg/dL from

baseline.On the SST, adrenal insufficiency was defined as a peak cortisol level of 18 mcg/dL or less in nonstressedpatients. In patients with bleeding, it was a maximum difference between peak and basal levels of less than 9mcg/dL, or a random total cortisol level of less than 10 mcg/dL.The authors found that patients with variceal bleeding had higher median basal cortisol levels (15.4 mcg/dL)compared with stable cirrhotic patients (8.7 mcg/dL, P = .001) or healthy volunteers (10.1mcg/dL, P = .01).Looking at peak cortisol, patients with bleeding varices also had higher median levels than did nonbleedingcirrhotic patients, both on the SST (32.7 mcg/dL vs. 21 mcg/dL, P = .0001) and on the LDSST(28 mcg/dL vs. 18.5 mcg/dL), although the difference on the latter test did not reach statistical significance.However, the change between basal and peak values was not significantly different between patients

withand without bleeding, either on the SST (15.4 mcg/dL vs. 12.7 mcg/dL, respectively) or the LDSST (9.3mcg/dL vs. 8.1 mcg/dL).Overall, “among patients analyzed by SST, 6/20 with variceal bleeding had adrenal insufficiency (AI) (30%),compared with 3/10 controls with [stable] cirrhosis (30%).†But on the more sensitive LDSST, “6/10 patients with variceal bleeding had AI (60%) vs. 24/50 controls with cirrhosis (48%),†the authors added.The lack of a significant difference between patients with and without bleeding, with regard to the changebetween basal and peak levels, shows that many of those with bleeding meet the criteria for “critical illness–related corticosteroid insufficiency†with respect to their severity of illness, wrote the authors. None ofthe healthy volunteers was found to have adrenal insufficiency.According to the researchers, a large proportion of those with variceal bleeding

showed a dysfunctional response on both the SST assay and the more sensitive LDSST test, thought to be a better mimic of physiologic adrenocorticotropic hormone secretion.“Although better methods of assessing adrenal function in cirrhosis are needed, the clinical significance ofthe abnormal ACTH tests and [critical illness–related corticosteroid insufficiency] may only be resolved by aclinical trial of corticosteroid supplementation in variceal bleeding as is used in sepsis.â€The authors declared no conflicts of interest related to this study. Bleeding Varices in Cirrhosis Linked to Adrenal InsufficiencyWatch this story’sVideo Insight atwww.gastro.org/gihepvideos

http://Hepatitis Cnewdrugs.blogspot.com/2011/07/bleeding-varices-in-cirrhosis-linked-to.html