SAAG is serum albumin ascites gradient.
SAAG is >1.1 in portal HTN, CHF, HVT and constrictive pericarditis.
The mnemonic for this is SAAG is High in conditions with an H.
congestive Heart failure
Hepatic vein thrombosis
Heart constriction (Constrictive pericarditis)
For completion, SAAG < 1.1 is seen in nephrotic syndrome, cancer and infections (except SBP)
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