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Biomedical subjects

H Ramadan

Publications and source records attributed to H Ramadan.

9 recordsLinked to original sources
PubMed2000

Analysis of aerobic bacterial strains found in chronic rhinosinusitis using the polymerase chain reaction.

INTRODUCTION: Rhinosinusitis is a common disease affecting an estimated 14% of the population. Although there is general agreement in the literature regarding acute rhinosinusitis, chronic rhinosinusitis is not as well studied, and no consensus has been reached regarding the bacterial etiology. The goal of this study was to test chronic rhinosinusitis mucosal specimens using the polymerase chain reaction (PCR) for aerobic bacterial content and to compare the results with standard culture data. RESULTS: Routine culture samples grew 50% aerobic bacteria, whereas PCR detected 62% aerobic bacteria contamination. CONCLUSION: PCR detected more bacteria in mucosal samples than in standard culture, but standard culture of this mucosa reflects the general aerobic bacteria found in chronic rhinosinusitis, with no predominant species of aerobic bacteria. SIGNIFICANCE: The analysis of chronic rhinosinusitis mucosa with the PCR method should give a more accurate picture of the bacteria found in chronic rhinosinusitis so that proper therapy can be instituted.

Adolescent↗
PubMed1999

Redone endoscopic perforator surgery: feasibility and failure analysis.

PURPOSE: In many hospitals and medical practices, subfascial endoscopic perforator surgery (SEPS) has become the treatment of choice in patients with incompetent perforator veins and active venous ulcers. A substantial number of surgeons consider SEPS to be an operation that can be performed only once because extensive scarring and narrowing of the subfascial space make a second endoscopic operation impossible. It is the purpose of this report to prove the feasibility, efficacy, and safety of a second SEPS procedure. METHODS: Within a period of 30 months, 105 primary SEPS procedures were performed in patients with healed or still active ulcers. In addition to these cases, within a period of 30 months, a consecutive number of 19 patients were examined and scheduled for a second SEPS procedure. All patients were in class 5 with healed ulcers or in class 6 with still active ulcers. The CEAP classification of the American Venous Forum was used to evaluate the results and to calculate the clinical, disability, and outcome scores. The redone operation was performed by using CO(2) insufflation, a dual-port technique, and subfascial balloon dissection. RESULTS: In two patients conversion to a conventional procedure was necessary. There were no major complications, but there was a 21% incidence of minor problems, such as hematoma or cellulitis. The mean total clinical score improved after surgery from 7.91 to 3.23 (P <.01), the disability score changed from 1.10 to 0.57 after surgery (P <.02), and the clinical outcome score was 1. 47 after surgery (P <.001). Cumulative ulcer healing could be achieved in 85.8% of class 6 patients. Failure analysis revealed that an incomplete subfascial dissection had been performed during the first endoscopic operation. A septum intermusculare medialis or an intact deep posterior fascia with incompetent Cockett II perforators were major factors contributing to the initial treatment failures. In addition to incompetent perforators, postthrombotic deep venous reflux was seen in eight (42.1%) patients, and four (21%) patients had a combination of secondary reflux and obstruction. CONCLUSION: Subfascial endoscopic procedures can be redone safely. In addition to exploring the superficial posterior compartment, the deep posterior compartment must be opened to prevent recurrent symptoms in patients with incompetent perforator veins.

Adult↗
PubMed1995

Congenital nasal pyriform aperture (bony inlet) stenosis.

Congenital nasal pyriform aperture stenosis should be considered in the differential diagnosis of infants with nasal airway obstruction. It can occur as an isolated anomaly or it can be associated with other congenital anomalies. A history of cyclical respiratory distress and cyanosis often associated with feeding and relieved by crying is characteristic. On examination, the nasal airway is narrowed anteriorly. CT is the study of choice to make the diagnosis and rule out other causes of nasal obstruction. Conservative management is recommended, sometimes with the use of a McGovern nipple for feeding. Severe cases or those in which conservative management fails should be considered for surgery.

Female↗
PubMed1993

Catecholamines in Drosophila melanogaster (wild type and ebony mutant) decuticalarized retinas and brains.

The concentrations of catecholamines were determined in the decuticalarized retinas and brains at different ages in wildtype and ebony Drosophila melanogaster using the HPLC-technique with an electrochemical detector. L-Dopa, dopamine (DA), alpha-methyldopa (alpha-MD) and unidentified compounds X1, X2 and X3 were found in decuticalarized retinas and brains of wildtype and ebony at different ages. Retinas and brains of the mutant ebony have higher concentrations of L-Dopa, DA and alpha-MD than the wildtype. In both wildtype and ebony, the concentrations of X1, X2 and X3 were found to be higher in decuticalarized retinas than in brains. The identity and importance of X1, X2 and X3 are still unknown.

Amino Acid Metabolism, Inborn Errors↗
PubMed1985

Double traumatic rupture of the thoracic aorta.

A 23-year-old woman was involved in an automobile accident and sustained a double traumatic rupture of the aorta, at the isthmus distal to the left subclavian artery and at the base of the innominate artery. A successful repair was accomplished within 4 hours of the injury using profound hypothermia and total circulatory arrest. To our knowledge, this case represents the first successful surgical repair of a double traumatic rupture of the aorta. Followup at 2 years showed an excellent postoperative recovery and the patient gainfully employed.

Adult↗
PubMedDate not supplied

Rectal carcinoma with solitary cerebral metastasis: report of a case and review of the literature.

A 54-year-old man underwent abdominoperineal resection for carcinoma of the rectum. Three months later, neurologic signs and symptoms developed. A brain scan, as well as angiographic studies, demonstrated a space-occupying lesion in the right parietal area. A solitary tumor was removed at craniotomy. Histologic examination revealed a metastatic adenocarcinoma with a rectal primary tumor. For two years the patient remained well, but then signs of local perineal recurrence developed. Treatment with cobalt irradiation and chemotherapy was unsuccessful. Autopsy revealed local recurrence with numerous distant metastases; however, examination of the brain failed to show a recurrent metastatic focus.

Adenocarcinoma↗
PubMedDate not supplied

The costs and benefits of getting the ISO 9000 certification in the manufacturing sector in Saudi Arabia.

Many Saudi companies, in their journey to improve quality, efficiency and competitiveness, are pursuing and obtaining the ISO 9000 certificate. Many studies have evaluated how to implement ISO 9000 in different sectors, but none have analyzed the effectiveness of ISO 9000 certification (costs and benefits) on improving the overall quality and on meeting expectations. This study addressed these issues by investigating manufacturing organizations in Saudi Arabia that have the ISO 9000 certification. A survey questionnaire was distributed to firms throughout the kingdom. Thirty-two firms participated in the study. Results indicate that increased consistency of operations, improved service, and product quality are among the top motivators for pursuing the ISO certificate. The benefits most often experienced were improved awareness of procedural problems, better management control, keeping existing customers, increased customer satisfaction, and improved customer service. Difficulties experienced during the certification process involved time and cost, but these were not considered to be major problems. A high volume of paperwork was the main problem experienced following initial certification. Respondents in general said that the ISO 9000 certification met their expectations and that their level of satisfaction regarding the impact of ISO 9000 was high. Most recommended that other organizations pursue the certificate.

Certification↗