Biomedical subjects

H T Zhen

Publications and source records attributed to H T Zhen.

4 recordsLinked to original sources

PubMed2000

[A new method to evaluate the eustachian tube function].

OBJECTIVE: To study the practicality of a new method to evaluate eustachian tube function. METHOD: We acquired the tympanogram of 30 normal persons (60 cases) by means of classical tympanometry, Toynbee test and valsalva maneuvre respectively, the peak point of each tympanogram was P1, P2 and P3 corresponding P1 -P2 > 10 daPa or Pmax-Pmin > 15 daPa was accepted as normal. RESULT: 70% cases were accepted normal, whose peak point shifted obviously. CONCLUSION: The method is a simple, objective and practical one; If the peak point shifts obviously, the function of ET is normal; On the contrary, if the function of ET may be abnormal, other tests should be performed.

Acoustic Impedance Tests↗

PubMed2000

[The evaluation of eustachian tube function in patients suffered from SOM with C type curve].

OBJECTIVE: To explore eustachian tube (ET) function in patients suffered from SOM with C type curve. METHOD: To test the tympanogram following toynbee test and valsalva manoeuvre respectively. The shift of peak point was quantified and the results were compared with normal subjects. RESULT: ET dysfunction was found in 52.38% of the patients, it was observed in 30% of the normal subjects (P < 0.05). CONCLUSION: ET dysfunction is one of the causes of SOM with C type curve, but not the only cause.

Acoustic Impedance Tests↗

PubMed2000

[The role of tracheotomy in saving the patients suffered from lung blast injury].

OBJECTIVE: To explore the role of tracheotomy in saving the patients suffered from lung blast injury. METHOD: To analyse the pathological change of lung blast injury and to make a retrospective analysis for clinical data of 8 cases. RESULT: Three severe injuries accompanying asphyxia, SaO2 < 75%, were tracheotomized and sucked hemorrhagic frothy sputum in trachea at once, and they were saved successfully. The other 5 cases, SaO2 > or = 90%, were not tracheotomized. CONCLUSION: During saving the lung blast injury, tracheotomy has an important role in sucking hemorrhagic frothy sputum in trachea and keeping the respiratory tract unobstructed.

Adolescent↗

PubMed1994

The micro-determination of serum gamma-glutamyl transferase.

The method of serum gamma-glutamyl transferase colorimeter assay was modified by changing the wave length from 420 nm to 400 nm, the incubated temperature from 37 degrees C to 50 degrees C, the sample amount from 30 microliters to 6 microliters. The modified method was proved to be more sensitive, with CV of intra-group being 2.06% and accuracy 97.4%. The method is suitable for clinical application with small-amount blood samples collected from earlobe or finger tip.

Adult↗