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Biomedical subjects

J Najbrt

Publications and source records attributed to J Najbrt.

7 recordsLinked to original sources
PubMed1990

[Comparison of the results of transbronchial puncture of the lymph nodes with surgical findings in patients with lung cancer].

Referring to a group of 144 patients with lung cancer planned for lung surgery, the authors compared the results of the needle biopsy of hilar, bifurcation and paratracheal nodes with the pathologist's finding in the resected portions of the lungs. In the hilar region, there were 89.5% findings in agreement with postoperative, 10.5% different findings. These were six patients where falsely negative results were found in 2 patients, falsely positive results in 4 patients. In the bifurcation and paratracheal regions, the cytologist's and pathologist's findings were entirely in agreement. At the same time the authors considered peribronchial needle biopsy for the ability to detect the lymph node. In the group of patients, in whom the nodes had not been reached by the needle, the pathologist described enlarged nodes in 14.7% patients in the hilar region, a 2.9% rate in the region of the bifurcation, and a 12.2% rate in the paratracheal region. In the authors' opinion, the method of peribronchial needle biopsy is sufficiently accurate and very useful for the intrathoracic staging of bronchogenic carcinoma. They see it as an inseparable part of bronchoscopy in patients with lung cancer.

Biopsy, Needle↗
PubMed1990

[Supraglottic jet ventilation during direct laryngoscopy].

During 1983-1987 at the ENT Clinic, Faculty of General Medicine, Charles University, Prague 779 direct laryngoscopic examinations made where the technique of supraglottic ventilation was used. The method was introduced for the sake of greater safety during laser surgery of the larynx in the first 57 patients analysis of the blood gases in capillary blood was performed and the results were satisfactory. The technique which is described in detail is considered equally reliable and safe as ventilation by classical intubation. It provides, however, a better overall orientation of the larynx, better use of the laser technique, it saves operation time and intubation material.

High-Frequency Jet Ventilation↗
PubMed1989

[Complications of CO2 laser surgery in the head and neck].

The authors analyzed data in the literature on complications of laser surgery in otolaryngology. Subsequently they analyse and describe in detail the complications they observed and which they encountered after 611 laser operations. None of the described complications caused permanent damage of the patient or the attending staff. When the recommended safety provisions are respected, the authors consider laser surgery a safe surgical method.

Adolescent↗
PubMed1975

Effect of age on kidney hyperplasia in the rat after unilateral nephrectomy.

The absolute weight of the rat's kidney increases from 3 weeks to 3 months and from 3 months to 12 months. The relative weight decreases. The number of cells freed from the kidney by trypsinization increases. (2) After nephrectomy, the kidney weight increases in all age groups. The increase is mery high in the youngest rats, lower but still significant in the 3 month old rats and still lower in the 12 month old rats. The number of cells freed from the kidney after nephrectomy is again very high in the young and 3 month old rats, but very low in the 12 month old rats. In these animals, the cell number is lower after nephrectomy than before, and a greater vulnerability of the cells is suggested as the cause of this phenomenon.

Adaptation, Physiological↗