Wan R, Wu YL, Wang H, Qu Q, Zhang S. Evaluation of hepatic function with
13C-methacetin breath test in patients with liver cirrhosis.
Shijie Huaren Xiaohua Zazhi 2004;
12:2147-2149. [DOI:
10.11569/wcjd.v12.i9.2147]
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Abstract
AIM: To investigate the characteristics of the 13C-methacetin breath test (13C-MBT) as a tool to monitor hepatic function of patients with liver cirrhosis.
METHODS: Forty-two patients with liver cirrhosis and thirty-one age- and sex-matched healthy controls underwent 13C-MBT.13C-methacetin (75 mg) was given orally, and the levels of 13CO2 delta over baseline (DOB), metabolisation velocity (MV) and cumulative percentage doses (CD) before and 10, 20, 30, 40, 50, 60, 80, 100 and 120 min after substrate administration breath samples was determined and compared, by non-dispersive infrared spectrometry.
RESULTS: The 13CO2 peak percent doses of healthy controls, Child class A and Child class B patients were 20.3 ±3.5%, 7.5±1.8% or 6.5±3.3% and 4.5±1.3%, and occurred at 20 min, 20 or 80 min and 40 min, respectively. The differences of13CO2 peak percent doses among healthy controls, Child class A and Child class B patients were obvious (P <0.05). No 13CO2peak percent doses occurred in Child class C patients. The differences of 13CO2 peak metabolic velocity were obvious (P <0.05) between healthy controls (28.8±5.3%) and Child class A patients (9.4±2.4%). No 13CO2 peak metabolic velocity occurred in Child class B and Child class C patients. The 13CO2 cumulative percentage doses of healthy controls, Child class A , Child class B and Child class C patients at 120 min after substrate administration were 31.2±4.5%, 13.8±3.7%, 8.2±2.2% and 2.4±0.8% (P <0.05), respectively.
CONCLUSION: The severity of liver damage can be directly and effectively evaluated by 13C-MBT in patients with cirrhosis.
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