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Biomedical subjects

Aviram Netzer

Publications and source records attributed to Aviram Netzer.

At least 19 recordsLinked to original sources
PubMed2006

Does otitis media in early childhood affect reading performance in later school years?

OBJECTIVE: To evaluate reading performance in children with recurrent otitis media during childhood once middle-ear diseases have resolved and the children grew older. STUDY DESIGN AND SETTING: Seventy-five children with middle-ear problems during childhood and poor reading performance in first grades and 60 healthy controls free of middle ear diseases were enrolled in the study. All children underwent an otologic and audiologic evaluation followed by reading tests. RESULTS: Reading performance was not affected once otitis media had been cured and hearing restored; reading scores of the healed children were almost the same as those of the otitis-free children (3.39% and 3.1%, respectively). Children who still suffer from middle-ear problems and hearing loss had an average percentage of reading mistakes of 7.3%. CONCLUSIONS AND SIGNIFICANCE: Once children are cured from their middle-ear diseases and hearing is restored, previously noted reading impairments are no longer evident. Reading is still impaired among children who continue to suffer from middle-ear problems and hearing loss even when they grow older. EBM RATING: B-2b.

Case-Control Studies↗
PubMed2006

[Safe extraction of an impacted open safety pin from the esophagus: a new technique and five case studies].

Esophageal foreign bodies are common, especially in children less than 5 years old. However, the presence of an open safety pin in the esophagus is quite rare. When this occurs, immediate removal of the safety pin is recommended due to its propensity to pierce the esophagus and surrounding structures causing severe and sometimes even lethal complications. Between the years 1990 and 2003, fifteen infants were referred to the Department of Otolaryngology-Head and Neck Surgery at the Rambam Health Care Campus with a history of safety pin ingestion. Plain neck, chest and abdomen radiographs showed the presence of an open safety pin impacted in the esophagus and pointing upwards in nine of the cases, and in the remainder (six infants) a closed pin was demonstrated in the stomach or in the duodenum. This report focuses on five cases in which during esophagoscopy only the clasp of the safety pin was visible, whereas the sharp point was impossible to be grasped, as it seemed to be stuck in the mucosa of the esophagus. In these cases the pin was pushed into the stomach, where it was closed, and then it was pulled outside without any harm to the mucosa or the gastric and esophageal walls. We present a new technique on how to safely close an open safety pin in the stomach and remove it, without any complications, using a flexible endoscope.

Child, Preschool↗
PubMed2005

Reading performance in children with otitis media.

OBJECTIVE: To examine whether middle ear diseases and the associated hearing loss in early childhood affect reading performance later at school. STUDY DESIGN AND SETTING: One hundred and sixty children, 6.5 to 8 years of age, were enrolled in this study: 80 children with a history of recurrent infections and/or prolonged periods of effusions of the middle ear before the age of 5 years, and 80 healthy children without any history of middle ear disease. Data were collected from the medical records of the children. Every child underwent a complete otological and audiological evaluation, followed by special reading tests. RESULTS: The study group performed more poorly, in all reading tests, as compared to the controls ( P < 0.001). CONCLUSION: Children with recurrent or prolonged middle ear diseases during the first five years of life tend to be at greater risk for delayed reading than aged-matched controls with no previous middle ear diseases.

Child↗
PubMed2005

Percutaneous tracheotomy in bone marrow transplant patients with severe thrombocytopenia.

OBJECTIVE: Evaluation of percutaneous tracheotomy in bone marrow transplant patients with severe thrombocytopenia. DESIGN: A retrospective outcome study. PATIENTS: A retrospective study of 26 percutaneous tracheotomies was performed at the Bone Marrow Transplant Unit, Rambam Medical Center, Haifa, Israel. Age, sex, underlying disease, reason for intubation, complete blood count, coagulation profile, and the incidence of renal failure were collected. All patients received 6 units of platelets one hour prior to the procedure. RESULTS: The mean platelets count was 14,300 +/- 5500. Twenty-five of the 26 percutaneous tracheotomies were completed successfully, without any intraoperative complications. One patient suffered from moderate bleeding during the procedure, which was immediately stopped and converted to open tracheotomy. In the postoperative period 4 patients suffered from mild bleeding around the stoma, which was managed conservatively. No other late complications were encountered. CONCLUSIONS: Percutaneous tracheotomy can be safely performed in patients with severe thrombocytopenia when the surgeon and anesthesiologist are experienced in the procedure, and platelets are given perioperatively.

Adult↗
PubMed2004

Delayed diagnosis of tracheoesophageal prosthesis aspiration.

In 1980, Singer and Blom published the results of their study on use of the tracheoesophageal puncture prosthesis for restoration of voice after total laryngectomy. Since then, the placement of tracheoesophageal puncture prostheses has been an integral part of rehabilitation after laryngectomy. Complications of this procedure have been recognized and are usually minimal. Inadvertent aspiration of the prosthesis is rare. Usually, patients seek help immediately after the incident. We report a case of unnoticed aspiration of a Blom-Singer prosthesis in a patient with a laryngectomy.

Esophagus↗
PubMed2003

Paper patching for chronic tympanic membrane perforations.

OBJECTIVE: This study was designed to evaluate the results of paper-patch myringoplasty in patients with chronic perforations of the tympanic membrane of different sizes. STUDY DESIGN AND SETTING: A retrospective survey of paper-patch myringoplasties performed in a tertiary referral academic medical center on 77 patients with chronic perforations of the eardrum was carried out. Data consisted of the causes of the perforations, time the perforations had been present, their size, number of patch applications, duration of application, and number of successfully closed perforations. RESULTS: Closure rate was 63.2%, 43.5%, and 12.5% for small, medium, and large perforations, respectively. Small perforations needed the least number of repeated applications and the least time for closure. CONCLUSIONS AND SIGNIFICANCE: Paper patching is technically simple, time saving, safe to perform, cost effective, and suitable as an outpatient procedure and has a good success rate, It should be tried in perforations smaller than 5 mm before a patient is referred for surgery.

Adolescent↗
PubMed2003

Percutaneous dilation tracheotomy versus surgical tracheotomy: our experience.

BACKGROUND: Percutaneous dilation tracheotomy (PDT) is becoming a popular alternative to surgical tracheotomy. In our department, we recently adopted the use of the PDT in intensive care unit patients. Here, we compare the results of the use of these 2 techniques on 150 patients, all performed by the same surgeon. We discuss the pros and cons of PDT and present our experience with the technique compared with surgical tracheotomy (ST). MATERIALS AND METHODS: A prospective study of 75 PDTs and a retrospective study of 75 surgical tracheotomies (ST) were performed at the Department of Otolaryngology-Head and Neck Surgery, Rambam Medical Center, Haifa, Israel. Age, sex, duration of intubation before surgery, time interval between the decision to perform and the performance of tracheotomy, and cost were compared. RESULTS: One hundred fifty tracheotomies were reviewed. The indication for tracheotomy in both groups was prolonged mechanical ventilation. Seven patients were found unsuitable for PDT and underwent ST. Complications included 3 cases of mild postoperative hemorrhage in the ST group, and 1 case of subcutaneous emphysema, 1 case of stomal cellulitis and 2 cases of mild postoperative hemorrhage in the PDT group. The average waiting interval was between 2 to 5 days for ST and 1 to 24 hours for PDT. The intraoperative time for ST was 20 minutes; for PDT, 5 minutes. The cost was 565 dollars for ST and 274 dollars for PDT. CONCLUSIONS: PTD provides an easy, less expensive, and convenient alternative to ST and should be added to the otolaryngologists' armamentarium of surgical airway procedures. The procedure is advantageous for the patient. Complication rates of both techniques are similar and low; however, PDT is a blind technique of obtaining a surgical airway and therefore holds more potential for serious complications. It is our conclusion that this technique is suitable for many, but not all, critical care patients and that the procedure should be performed only by surgeons who are capable of urgently obtaining a surgical airway or exploring the neck should the PDT fail.

Adult↗
PubMed2003

Antioxidants in treatment of idiopathic sudden hearing loss.

OBJECTIVE: Assuming that superoxide anion radicals (O(2)-) may play a role in damage to the inner ear, the authors investigated the possible benefit of vitamin E as an antioxidant in the treatment of idiopathic sudden hearing loss. STUDY DESIGN: Prospective, double-blind study. SETTING: The Department of Otolaryngology of Rambam Medical Center serves as a tertiary referral center for a population of 1.2 million people. PATIENTS: A total of 66 patients, aged 15 to 70 years, with diagnoses of idiopathic sudden hearing loss of less than 7 days' duration during 1998 to 2001, were included in the study. All were treated with bed rest, steroids, magnesium, and carbogen inhalation. The study group received vitamin E in addition. RESULTS: The recovery rate, calculated as hearing gain divided by the difference in hearing level between the affected and unaffected ear, was better than 75% in 41 of 66 (62.12%) patients. This rate was achieved in 26 (78.78%) patients in the study group treated with vitamin E, compared with 15 (45.45%) patients in the control group. CONCLUSIONS: Patients treated with the addition of vitamin E achieved better recovery than did the control patients. Further studies should be directed toward a better understanding of the role of antioxidants in idiopathic sudden hearing loss.

Adolescent↗
PubMed2003

Stapedius muscle myoclonus.

Myoclonus of the middle ear is a very rare condition. We present the case of a 20-year-old soldier who was exposed to intense artillery noise during a fierce battle and immediately afterward complained of an incapacitating tinnitus in both ears. Microscopic examination of the ears demonstrated rapid rhythmic movements of the tympanic membrane coinciding with the tinnitus, which was also easily heard by the examiner. There was no evidence of palatal myoclonus, and thus the diagnosis of middle ear myoclonus was made. Exploratory tympanotomy confirmed the diagnosis of stapedial muscle myoclonus. Bilateral sectioning of the stapedial tendons brought immediate relief of the tinnitus to the patient. We review the literature of middle ear myoclonus and discuss the symptoms, evaluation, and management of this rare condition.

Adult↗
PubMed2003

Extension of nasopharyngeal lymphoma to the middle and external ear.

We describe a patient with nasopharyngeal lymphoma who was admitted for chemotherapy. At admission, otoscopic examination revealed a large polyp occluding the left external ear canal. The polyp was removed, and histopathologic examination showed the same tumor that was found previously in the nasopharynx. Magnetic resonance imaging showed an infiltrative process that involved the left side of the nasopharynx and extended toward the left middle and external ear. To our knowledge, this is the first case report of a direct extension of nasopharyngeal lymphoma into the middle and external ear.

Ear Canal↗
PubMed2003

Bilateral tinnitus due to middle-ear myoclonus.

Tinnitus is a common otological symptom. Usually it is subjective (perceived only by the patient); very rarely is it objective (heard by both the patient and the examiner) Objective tinnitus due to middle-ear myoclonus is extremely rare, with only a few case reports published in the literature. We present three cases of objective tinnitus caused by middle-ear myoclonus. All patients were cured by tympanotomy with stapedial and tensor tympani tendon section.

Adolescent↗
PubMed2002

Magnesium: a new therapy for idiopathic sudden sensorineural hearing loss.

OBJECTIVE: To determine whether treatment with Mg(2+) improves the outcome of idiopathic sudden hearing loss and to investigate which variables influence its prognosis. STUDY DESIGN: Prospective randomized study. SETTING: Department of Otolaryngology-Head and Neck Surgery, Rambam Medical Center, Haifa, Israel. PATIENTS: The study group included 133 patients. Sixty patients were treated with carbogen inhalation, and 73 were treated with a combination of carbogen inhalation and intravenous MgSO(4). RESULTS: The mean improvement rate was 66.4% in the Mg(2+) group and 49.9% in the carbogen group (p < 0.01). Recovery was achieved in 35 patients (48%) in the Mg(2+) group and only in 19 patients (31.6%) in the carbogen group (p < 0.01). Significant improvement was seen in 20 patients (27.4%) in the Mg(2+) group and in 14 patients (23.3%) in the carbogen group. Partial improvement was seen in eight patients (10.9%) in the Mg(2+) group and in 12 patients (20%) in the carbogen group. No improvement was achieved in 10 patients (13.6%) in the Mg(2+) group and in 15 patients (25%) in the carbogen group. Patients with vestibular symptoms had a poorer hearing outcome compared to those without vertigo (p < 0.04). Patients who commenced the treatment 8 days or more after onset had poorer recovery as compared with those who started treatment earlier (p < 0.03), regardless of the treatment regimen. Age, sex, and tinnitus had no significant impact on hearing recovery. CONCLUSION: We found that Mg(2+) improved hearing recovery in cases of idiopathic sudden hearing loss. Vertigo and treatment delay beyond 8 days were poor prognostic factors for recovery.

Administration, Inhalation↗
PubMed2002

Hyposmia following laryngectomy: experimental model.

Hyposmia following laryngectomy is a well-known clinical observation, yet the causes have been controversial for many years. In an attempt to resolve this issue, an animal model was constructed. Eighteen dogs were divided into three equal groups: control dogs, dogs that underwent tracheostomy, and dogs that underwent tracheostomy and denervation of the larynx, simulating total laryngectomy. Four to 6 months following these operations, biopsies from olfactory mucosa were taken. The results showed marked changes in the olfactory mucosa of the two test groups: cystic degeneration of secretory glands in the olfactory mucosa of the first group and involution of the olfactory mucosa, substituted by dense connective tissue and "ballooning" of olfactory nerve fibres in the second group. These findings suggest that the changes in olfactory mucosa are not only caused by a loss of nasal airway but also the existence of a neurologic connecting network between the vagus nerve and the olfactory cortex.

Animals↗
PubMed2002

Tracheotomy: changing indications and a review of 1,130 cases.

BACKGROUND: Tracheotomy is one of the oldest known operations, dating back to ancient Egypt and India some 3000 years ago. The indications for tracheotomy have changed and expanded during the twentieth century. Today, owing to advancements in intensive care and the widespread use of mechanical ventilation, tracheotomy is one of the most commonly performed surgical procedures and is encountered on a regular basis by hospital physicians in all fields. We present one of the largest series of consecutive tracheotomies spanning one decade. We review and discuss the modern indications for tracheotomy and emphasize the changes in these indications over the past century. METHODS: A retrospective study of 1,130 consecutive tracheotomies performed over one decade is presented. We studied the indications for surgery, the complications and mortality rate, and the various hospital departments requiring tracheotomies. RESULTS: A total of 1,130 tracheotomies were performed: 859 to assist in mechanical ventilation, 124 as an adjunct to head and neck or chest surgery, and 68 to relieve upper airway obstruction. Major complications occurred in 49 of the cases, and there were 8 deaths directly attributed to the tracheotomies. The most common complication was tracheal stenosis, occurring in 21 cases. Hemorrhage was the second most common complication, occurring in 9 cases. CONCLUSION: Tracheotomy, once used almost exclusively to bypass upper airway obstruction, is now a very common elective therapeutic procedure used mostly to facilitate prolonged intubation and ventilation of the critically ill. Today tracheotomy is not and should not be an emergency procedure owing to the huge complication and mortality rate of emergency tracheotomy and the existence of alternative routes to obtain immediate airway control in the acutely obstructed upper airway.

Airway Obstruction↗
PubMed1999

Ventilation tubes and persisting tympanic membrane perforations.

Surgical management of otitis media with effusion and recurrent acute otitis media includes myringotomy and the use of ventilation tubes. Since this procedure was reintroduced by Armstrong in 1954, it has become one of the most commonly performed operations in otolaryngology. In most series perforation of the tympanic membrane in some patients has been reported after spontaneous extrusion or removal of the tympanostomy tubes. We present a retrospective review designed to examine the incidence of persisting perforations of the tympanic membrane in our series of 2604 operated ears. The study also identifies and analyzes the variables and the contributing risk factors. Perforations occurred in 3.06% of the ears: with a greater incidence in children younger than 5 years, when the indication was recurrent purulent otitis media, with the use of long-term Goode T tubes, in cases with repeated insertions of ventilation tubes, and in cases in which postoperative otorrhea was frequent.

Child↗
PubMedDate not supplied

Safe extraction of an impacted open safety pin from the esophagus: report of 9 cases.

PURPOSE: Foreign body ingestion is a common problem in children. An infrequent ingested item is an open safety pin (SP), which may become lodged in the esophagus and presents the endoscopist a challenge to his surgical judgment and technical skills. MATERIALS AND METHODS: We present 9 cases of infants with open SPs impacted in the esophagus and discuss the different options to treat these cases. RESULTS AND CONCLUSIONS: The management of open SP ingestion is discussed, along with a review of the literature regarding this rare condition.

Child, Preschool↗
PubMedDate not supplied

The use of otic powder in the treatment of acute external otitis.

BACKGROUND: Acute external otitis (AEO) is a painful condition that results as a secondary infection of macerated skin and subcutaneous tissues of the external auditory canal. The most commonly causative microorganisms are Pseudomonas aeruginosa and Staphylococcus aureus. Classic management strategies include moisture prevention, cleansing of the canal and administration of topical antimicrobial agents in drop form, such as aminoglycosides and quinolones, at times in combination with steroid solutions. The objective of this study was to evaluate and compare the efficacy of topical otic powder, tobramycin drops and ciprofloxacin drops in patients suffering from AEO. MATERIALS AND MEASURES: A randomized prospective trial was performed to determine the efficacy of Auricularum powder (dexamethasone 10 mg, oxytetracycline HCl 90,000 U, polymyxin B Sulfate 100,000 U, nystatin 1,000,000 U; Trima, Serolam Laboratories, Germany) compared with ciprofloxacin (Ciloxan, Alcon Laboratories, Fort Worth, TX) and tobramycin (Tobrex, Alcon Laboratories) drops for the treatment of AEO. One hundred twenty patients who presented with signs and symptoms of AEO were enrolled. Inclusion criteria were: AEO diagnosed by an otolaryngologist, patient age 18 years, no prior treatment with other drops or systemic antibiotics, no sensitivity to any of the drugs used or their contents, and no perforation of the tympanic membrane. All patients were instructed to avoid moisture and wetness of the ear during the course of their treatment. After we received informed consent, a swab culture was taken, and the patient was randomly assigned topical treatment for 14 days. RESULTS: Eighty-six percent of those treated with Auricularum powder were cured at day 3-4 after initial treatment. Seventy-seven percent of those treated with ciprofloxacin drops, and fifty-six percent of those treated with tobramycin were cured at that time. All 120 patients were cured by day 14. CONCLUSION: The results show that topical treatment with Auricularum powder is an effective and rapid method for the treatment of AEO. Ciloxan also was effective in the treatment of AEO and relieved symptoms quickly and efficiently in a short period of time. Tobrex was effective in treating AEO, but our results show that relief of symptoms was slower than with the other drugs.

Acute Disease↗