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Biomedical subjects

A Staffieri

Publications and source records attributed to A Staffieri.

At least 55 records · Page 3Linked to original sources
PubMed1996

Temporary threshold shift induced by physical exercise.

Several studies have demonstrated how physical exercise can increase noise-induced temporary threshold shifts (TTS), but until now no evidence of TTS exclusively attributable to physical activity has yet been reported. In this study the hearing pure-tone thresholds of 10 subjects were evaluated at rest and at three designated times following the end of a work load corresponding to 50% and 80% of the maximum oxygen uptake (VO2 max). The results obtained demonstrate a definite effect of physical exercise on the hearing threshold at 6000 and 8000 Hz and that the higher the frequency, the greater the chance of detecting a TTS. Evaluation of the variations in some physiologic parameters (VO2 max, blood lactate and blood pressure) could not statistically correlate the same with TTS. The physiopathologic mechanisms responsible for TTS are still unknown and require further studies which should make allowances for the deferred effects of metabolic variations on the cochlear function.

Adult↗
PubMed1983

Tracheostomal recurrences after laryngectomy.

A clinicopathologic study of 681 laryngectomies performed at the Otorhinolaryngology Clinic of the University of Ferrara forms the basis here of a discussion of the etiopathogenesis of the postsurgical tracheostomal recurrence. Special attention is paid to the much debated etiopathogenetic role of preoperative tracheotomy. In all classes of material analyzed, tracheostomal recurrence was more frequent in patients with preoperative tracheotomy, though the percentages varied depending on the class. Morphological analysis of original tumor specimens from preoperatively trachetomized patients who later had tracheostomal recurrence, revealed tumors in 4 out of the 11 usable specimens. Of these, two had submucosal infiltration in a peripheral digitation of the tumor; in the other two cases, no contact was observed between the neoplastic infiltration and the outer border of the original tumor. The authors also reviewed the case histories of patients in whom conservative surgery was followed by total laryngectomy because of endolaryngeal recurrence. The high rate of tracheostomal recurrence in this category of patients suggests that the pathogenetic mechanism may be analogous in the two situations: preoperative tracheotomy/tracheostomal recurrence and inadequate conservative surgery/tracheostomal recurrence.

Humans↗
PubMed1979

Supraglottic surgery in vestibular cancer.

This paper deals with the experience acquired in the E.N.T. Clinic of the University of Ferrara regarding horizontal supraglottic laryngectomy in vestibular cancer. The anatomical background of this functional surgery and the most important principles of the technique are specified. The results regard 121 cases (13 T1 cases, 93 T2 cases and 15 T4 cases) divided into three groups: 1. patients who had only surgery (68 cases); 2. patients who for various reasons also had complementary postoperative radiotherapy (39 cases); 3. patients with extralaryngeal expansion who had preoperative radiotherapy (14 cases). The high overall survival rate for the 121 cases is particularly significant, as is the shortening of the high-risk period to less than the usual 5 years. The 4-year cure rate is 78% and remains unchanged right through the 7-year follow-up. The authors feel that these data demonstrate further the validity of supraglottic laryngectomy when its precise indications are rigorously observed.

Female↗
PubMed1978

[Surgical rehabilitation of speech after total laryngectomy: the Staffieri techniques (author's transl)].

Surgical speech rehabilitation after total laryngectomy by the three procedures of Prof. Staffieri is based on the principle of establishing a short fistula lined by pharyngeal mucosa between trachea and hypopharynx. It permits voluntary air pressure control for voice production while preventing aspiration during deglutition. In a single-stage procedure the "neoglottis phonatoria" is established on the occasion of the laryngectomy at the top of the trachea. In cases of prevoius laryngectomy a shunt is established between the trachea dorsal wall and the oesophagus, either cranially (direct internal shunt) or more caudally (retrograde internal shunt). The three methods are described, and the one-way function of the different fistulas are demonstrated. The percentage of successful voice restorations that remain free from swallowing difficulties in 700 patients, subjected to these techniques in Europe and Overseas is between 60 and 90%. The main advantage of this operation, which is easy to perform and without risk for the patient, is the wide oncologic spectrum of indications.

Humans↗
PubMedDate not supplied

Tympanic membrane displacement analyser tracing modifications induced by glycerol in Menière's disease.

The aim of the study was to detect inner ear fluid pressure changes induced by glycerol in Menière's disease (MD) by means of a tympanic membrane displacement analyser (TDA). The study group consisted of 25 MD patients. The Vi (maximum inward displacement of the tympanic membrane) and the Vm (mean displacement of the tympanic membrane) were measured at 10, 20 and 25 dB above the stapedial reflex threshold. Each patient received therapy based on glycerol. The control group consisted of 20 patients with non-hydropic sudden hearing loss. At 20 and 25 dB above stapedial threshold MD patients had lower Vi values before therapy. After glycerol, we observed a Vi increasing in the hydropic ears in 68-96 per cent of patients. Since a Vi improvement implies a reduction of perilymph pressure, our results confirm the effectiveness of Vi in detecting specific action of glycerol in MD.

Adolescent↗
PubMedDate not supplied

Role of nasal valve in the surgically corrected nasal respiratory obstruction: evaluation through rhinomanometry.

The aim of this study was to evaluate the improvement of nasal flow and the fall of nasal resistance in 50 patients that underwent rhinoseptoplasty in our department and discuss the relative importance of valvular and septal deformities in nasal airway obstruction. Fifty consecutive patients underwent rhinoseptoplasty to improve nasal obstruction caused by severe septal deviation, external or internal valvular incompetence, or any combination of the three. We excluded patients with minor septal curvatures, septal perforations, or turbinate hypertrophy. Preoperative and postoperative rhinomanometry was performed on all 50 patients. In all 50 patients, septal and/or valvular surgery lowered nasal resistance in 90% of cases. Septoplasty alone with medial and basal osteotomies did not improve nasal flow (p < 0.4), whereas the correction of valvular obstruction alone increased nasal airflow in a statistically significant way (p < 0.0001). Moreover, patients with both valvular incompetence and septal deviation represented the group in which the greatest preoperative obstruction and the greatest postoperative improvement occurred. Nasal valvular function should be assessed with rhinomanometry in all preoperative rhinoplasty patients with airway obstruction. In many cases, valvular effects may surpass septal deviation as the primary cause of nasal airflow obstruction.

Female↗