Chinese Med J Peking
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Chinese Med J Peking · Nov 1999
The diagnostic value of total respiratory impedance by impulse oscillometry in chronic obstructive lung disease.
To investigate the diagnostic significance of total respiratory impedance for chronic obstructive lung disease. ⋯ Resonant frequency was the most sensitive index in the parameters measured by IOS for diagnosing COPD. Since impedance measurement was a non-invasive method and only passive co-operation of the patient was needed. This technique could therefore be applied in COPD patients with acute attack for dynamic examination.
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Chinese Med J Peking · Nov 1999
Molecular mechanism of recessive congenital methemoglobinemia in Chinese pedigrees.
To investigate the molecular mechanism of recessive congenital methemoglobinemia (RCM) in Chinese and to establish a gene diagnostic method of polymerase chain reaction-restricted fragment length polymorphism (PCR-RFLP). ⋯ A guanine-to-adenine transition at codon 57, replacing arginine with glutamine, was the molecular basis for RCM in two Chinese families.