Search PubMed⌕ Search

Biomedical subjects

G Janczewski

Publications and source records attributed to G Janczewski.

At least 37 records · Page 2Linked to original sources
PubMed1994

[Lateral rhinotomy is still a useful surgical approach].

Experience with 130 patients requiring a lateral rhinotomy is reported. It is concluded that excellent surgical exposure is assured by this approach and that minimal postoperative complications are attributable to the incision. An understanding of the advantages and disabilities associated with each of several extensions may help to the surgeon to tailor the approach to individual case. The lateral rhinotomy approach allows wide access to the nose, some elements of skull base, the nasopharynx and the paranasal sinuses for removal of benign and malignant lesions.

Adult↗
PubMed1993

[Carcinoma of the postcricoid area of the hypopharynx: treatment and results].

Squamous cell carcinoma arising in the postcricoid area of the hypopharynx is relatively late diagnose. Previous observation concerning patients treated in our Clinic and the data from literature confirmed very bad diagnosis in this cases. The results of the Clinical observation of 58 patients and pathomorphology findings in 35 preparates have been described. In that group we have found only 16 cases (27.6%) with 3 years long surviving rate. Morphological findings, relating lymphatic system, partially explained so bed prognosis.

Carcinoma, Squamous Cell↗
PubMed1993

[First cochlear implant in Poland].

The authors present a 30 year old patient whose hearing was profoundly impaired in the course of meningitis 12 years ago. They present details on the preparation of the patient for the surgery and indications for the implant, consecutive stages of the surgery and the first stage of the rehabilitation process are described. The results of the capability of electrical conductivity of the cochlear nerve as the direct effect of the cochlear implant and the first audiogram illustrating the hearing effect after the first 2 months of rehabilitation are presented as well.

Adult↗
PubMed1993

[Cochlear implants: state of knowledge, prospects, indications for implantation].

The authors present the development of totally deaf patients treatment program using cochlear implants. Based on leading Europeans Centers qualification basis and selection criteria are discussed for this method of treatment both for adults and children. Next given are indications for extracochlear and intracochlear implants. Summarizing, they evaluate possible results using the above implants and prospects for the development of this program in our country.

Age Factors↗
PubMed1991

[Analysis of the causes of failure in surgical treatment of cancer of the larynx].

In the years 1985-1990 within the group of 2769 patients operated upon for laryngeal cancer in four medical centres (Kraków, Poznań, Warszawa, Lublin), a clinical analysis on surgical treatment failures was performed. The most significant reasons of failures were: the highly advanced age of patients, coexistent diseases, in particular the cardiopulmonary disease; poor information of neoplastic diseases (carcinomas) and delayed referral to the doctor; lack of consent for surgical treatment; old fashioned diagnostic methods; prolonged period of making diagnosis; increasing number of patients with supra-glottic localization including the hypo-pharynx and piriform recess; a considerable degree of organ ++cancer advancement and substantial clinical advancement; not radical excision of neck glands; intra-surgical blood transfusion; micrometastases to lymphatic glands; immunity collapse; discontinuance of post-surgical radiation on affected parts; lack of lymphadenectomy backward from accessory nerve ; massive cancer metastases to lymph nodes; high histologic malignancy with characteristic carcinous invasiveness; and finally, surgical and post-surgical early and late complications ranginy within our material from 25% to 29% of surgical patients. Basing on the above mentioned analysis, the authors developed indications for surgical treatment of laryngeal cancer.

Age Factors↗
PubMed1991

[Evaluation of the effectiveness of surgical treatment of metastases of laryngeal cancer to the lymph nodes].

The evaluation of surgical treatment results was done to 308 oncological patients to whom metastases were formed in lymph nodes between 1980-1984, following the previous surgical treatment of the laryngeal cancer. The evaluation included among others the following: cancer initial localization: T and N traits; the degree of malignancy; surgical radical intervention ; assertion of neoplastic cell plugs in vessels; the time of recurrent lymphatic metastases, etc. The efficiency of surgical treatment of metastases being formed following the previous surgical treatment of laryngeal cancer, measured by the time of 5 years asymptomatic life, equalled 33.4% in the discussed material. Moreover, it was stated that in the studied group of 308 patients the percentage of deaths was increasing in the subsequent years of taking observations (from 1980 to 1984) and depended also on patients overall condition, initial cancer localization, the degree of neoplastic advancement and on the degree of cancer histologic malignancy.

Adult↗
PubMed1991

[Examination of reaction time--auditory brainstem responses--ABR in noise induced temporary and permanent threshold shift].

This study was conducted to investigate the differences between auditory brainstem responses--ABR recorded in men with temporary or permanent threshold shifts (TTS or PTS). Behaviorally, the tested ears showed insignificant differences in the hearing thresholds at frequencies in the range 0.25-8 kHz. The latency of waves I, III, V and interwave intervals I-III, III-V, I-V were analysed as functions of stimulus intensity. The comparisons between recordings obtained in groups with TTS and PTS showed significant differences in latencies of wave V at 90 dB nHl only. The latencies of waves I, III and interwave intervals were unaltered.

Adult↗
PubMed1990

[Evaluation of the causes of lymphatic metastases after surgical treatment of patients with laryngeal cancer].

During the years 1980-1988 2458 laryngeal cancer patients were operated upon in 4 ENT AM Clinics in Kraków, Poznań, Lublin and Warszawa. 300 (12%) out of them have had the cervical node metastases in 18 months after the surgery. The cause analysis was performed. The primary localizations were in the epiglottic and ++post-cricoid areas. The causes of metastases to the ++lymph nodes were analyzed; the primary epiglottic and ++post-cricoid localization of the tumor, its extensiveness and advanced clinical stage. Twice more often were the nodal metastases stated before the primary treatment, a high degree of histological malignancy, probably insufficient radicality of the surgery and insufficient immunological resistance of the organism were taken in consideration. This group of patients presented a rather high percentage of early unsuccessful results of surgical treatment of the laryngeal cancer; this problem needs further analysis and observations.

Adult↗
PubMed1989

Results of laryngeal cancer surgery in four ENT centers in poland.

The results of laryngeal cancer surgery were assessed in a group of 832 patients treated in four major ENT centers in Poland. Five-year survival rates were as follows: stage I, 86%; stage II, 71%; stage III, 54%; and stage IV, 42%. In experienced hands and for properly selected cases, cure rates after partial (conservation) laryngeal surgery were similar to those after total laryngectomy. For early stages (I and II), the survival after partial surgery was better than that found after radiotherapy.

Adult↗
PubMed1989

[Evaluation of complications after surgical treatment of cancer of the larynx].

The surgical complications in a group of 1712 laryngeal cancer patients treated during the years 1981-87 in ENT Clinics of Cracow, Poznań, Warsaw and Lublin were described. The most dangerous were bleedings and the most frequent wound and tracheo-+-bronchial infections and pharyngo-cutaneous fistulas++, after radical neck dissection however the paralysis of sublingual and accessory nerves and of brachial plexus. The predisposing factors were: diabetes, lung and heart diseases, late stage of cancer, extent of surgery and tumor infections.

Adult↗
PubMed1988

[Evaluation of the effect of auditory fatigue on the human ear by auditory brain stem responses (ABR). I. Effect of auditory fatigue on temporary threshold shifts of ABR].

The effects of auditory fatigue on auditory brainstem responses (ABR) were investigated in 23 normal-hearing subjects. ABR was recorded before and after exposure to fatiguing noise. Behaviourally, the auditory fatigue was tested using a temporary threshold shifts (TTS) paradigm. The latency of waves I, III, V and interwave intervals I-III, III-V, I-V were analysed as functions of stimulus intensity. In post-exposure recordings a threshold elevation, significant increase of all waves latency, increase of interwave-interval III-V at 40,50,60 dB nHL and unaltered intervals I-III, I-V were observed.

Adult↗
PubMed1988

[Evaluation of the effect of auditory fatigue on the human ear based on the measurement of brain stem auditory potentials (ABR). II. Relation of temporary auditory threshold shift and changes in the latency of wave V].

The relationship between temporary threshold shift (TTS) and latency changes of auditory brainstem responses (ABR) induced by noise exposure was studied in 23 normal-hearing subjects. Shift in latency wave V at 40 dB nHL of stimulus intensity as a result of auditory fatigue showed no significant correlation with TTS at 4 kHz. The great intersubject variability of shifts in latency wave V as a result of auditory fatigue suggests that this shift may be a useful measure of individual susceptibility to noise.

Acoustic Stimulation↗