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B Hohn

Publications and source records attributed to B Hohn.

71 records · Page 4Linked to original sources

[Respiratory function in chronic obstructions of the large pulmonary arteries (study of 30 cases].

If diagnosis of chronic thromboses of pulmonary arteries is usually easy at the stage of confirmed chronic pulmonary heart, it is not so when dysponea is the only symptom of the disease. The authors report 30 cases of chronic thrombosis and remark that if respiratory alkalosis is very frequent, hipoxemia is often missing. On the other hand they observe 27 times out of 28 an increase of CO2 alveoloarterial difference; measuring the CO2 difference appears a safe and reliable test for detecting chronic thrombosis. It should take place in every systematic complete examination of unexplained dyspnoea.

Adult

[Value of the measurement of ventilatory and circulatory components in CO2 ductance].

Authors bring forth the results of the determination of CO2 ductances in 28 patients : 14 cases of pulmonary arterial thrombosis, 7 cases of diffuse interstitial fibrosis recognizing various etiologies, 4 cases of endothoracic sarcoidosis and 3 cases of pure restrictive syndrome due to functional amputation of some territories. The global CO2 ductance is lowered in 24 cases. In each one of these cases the PACO2 determination makes possible to decompose the global ductance into a ventilatory ductance and a circulatory ductance. The circulatory ductance is lowered in the case of pulmonary arterial thrombosis; the ventilatory component is lowered in the case of restrictive syndromes and in the case of diffuse interstitial fibrosis. For what concerns the pulmonary arterial thrombosis, authors discuss then the value of the information contained in the expression of the CO2 arterial-alveolar gradient on the one hand, and in the circulatory component of the ductance on the other hand. At last, the determination of the ductances appears interesting in the supervision of the course of various diseases.

Carbon Dioxide

Activity of empty, headlike particles for packaging of DNA of bacteriophage lambda in vitro.

A precursor head of phage lambda is synthesized after induction of cells lysogenic for lambdaD(-)F(-) and lambdaA(-) (head-defective) mutants. This precursor head can be assayed by complementation in vitro and can be purified by CsCl gradient centrifugation and sucrose gradient sedimentation. The precursor head contains no DNA and has the same dimensions as the petit lambda particle. It can be packed with lambda DNA in an extract from induced Escherichia coli lysogenic for a lambdaE(-) mutant.

Coliphages

[Value of ventilatory assistance through the mouth in readaptation of patients with chronic respiratory insufficiency. Report of 20 cases (author's transl)].

Twenty patients with severe and chronic respiratory insufficiency (SaO2 less than or equal to 80% - PaCO2 greater than or equal to 50 mmHg) were treated with intermittent ventilatory assistance. They used volumetric apparatus 2 to 8 hours a day, during at least 6 months (22 months +/- 13). Respiratory status never improved strikingly, on the contrary most of the time it worsened and patients needed other ventilatory technics and/or died (11 of 20). This technic of ventilatory assistance does not seem to really change the prognosis of these patients in a severe and chronic state.

Carbon Dioxide