Volumetric studies of alcohols in water and aqueous micelle solutions of cetyltrimethylammonium bromide

The volumetric properties of 1-propanol, cyclohexanol and butoxyethanol in water and CTAB water mixtures have been studied. The apparent molar volumes of 1-propanol, cyclohexanol and butoxyethanol in water and in aqueous solutions of CTAB were determined from density data. The partial molar volumes of the alcohols in water and aqueous micelle solutions at infinite dilution, V20(mic) were obtained from apparent molar volume data and compared with the corresponding values. The standard partial molar expansibilities, E20(mic) of the solubilizates were evaluated from V20(mic) data at various temperatures. The volumetric studies of alcohols in CTAB micelles indicate that alcohols on the average are preferentially solubilized in the palisade layer of the micelle and increasing amount of each is transferred more deep into the palisade layer of the micelle with increasing surfactant concentration and temperature. The results of standard partial molar volume, V20 and standard partial molar expansibilities, E20 are reported and discussed. DOI: http://dx.doi.org/10.3329/jbcs.v24i2.9703 Journal of Bangladesh Chemical Society, Vol. 24(2), 143-157, 2011

Hypopharyngeal carcinoma: a clinical study

A prospective study was carried out from 2001 to 2002 at Department of Otolaryngology and Head- Neck Surgery, BSMMU, DMCH, SSMC & Mitford Hospital, Dhaka. Data were collected from 45 patients with histologically diagnosed hypopharyngeal carcinoma on the following variables 1) sociodemographics, 2) clinical manifestations, 3) sub-sites of carcinoma, 4) clinical staging, 5) time of diagnosis, 6) associated risk factors, and 8) patients general performance status at presentation was determined by the Karnofsky scoring system. Results of this study showed that hypopharyngeal carcinoma affects fourth (60%) and fifth (26.7%) decade of life. It was found that male was highly predominant to develop hypopharyngeal carcinoma and ratio was 6:1. People with lower educational level and lower income group were found to be affected more by hypopharyngeal carcinoma. In this study the mean time elapsed from the appearance of the first symptom to the diagnosis of hypopharyngeal carcinoma was 4.11 months. This study found that the key symptom of hypopharyngeal carcinoma was dysphagia, pain, hoarseness and neck mass. 80 percent patient presented with palpable lymph node and all of them were in level II. Pyriform fossa was found to be the commonest site (80%) affected by carcinoma. In this series 75 percent patient presented in stage III and stage IV. There is strong relation between staging and diagnostic delay (p<0.05). In this study 86.7 percent patients had history of smoking. Smoking was found significantly associated with hypopharyngeal carcinoma (p<0.05). Betel nut chewing and tobacco chewing was found to be significant factors to develop hypopharyngeal carcinoma (p<0.05). This study showed that there was no patient with good oral health. Bad and average orodental hygiene was found in 44.4 and 55.6 percent respectively. Statistically bad oral hygiene was significantly related to hypopharyngeal carcinoma (p<0.05). Performance status of the patients at presentation was good and 77.8 percent of patients with hypopharyngeal carcinoma at diagnosis were capable of self-care.  DOI: 10.3329/bjo.v14i1.3276 Bangladesh J of Otorhinolaryngology 2008; 14(1) : 23-29

Pain management of peritonsillar abscess

One year cross sectional study was undertaken in 50 patients with peritonsillar abscess to determine the treatment that was most effective in relieving the excruciating pain associated with the condition. The patients were divided into two treatment groups: intravenous antibiotic, and incision and drainage. The effect of treatment over was objectively assessed by serially measuring the distence between upper & lower incisor and by giving the patient water to drink at regular intervals to determine the point at which swallowing was pain-free. The improvement of the mean upper to lower incisor distance 15 minutes after the initial treatment was five per cent in the intravenous antibiotic group and 100 per cent in the incision and drainage group. None of the patients in the intravenous antibiotic group was able to swallow water two hours after the initial treatment. In the same time interval 23 patients (92 per cent) in the incision and drainage group were able to swallow water. The conclusion derived from this study is that incision and drainage is superior to intravenous antibiotic in relieving the pain associated with peritonsillar abscess. Key words: Peritonsillar Abscess, Pain.  DOI: 10.3329/bjo.v14i1.3273 Bangladesh J of Otorhinolaryngology 2008; 14(1) : 6-8

Prevalence of otitis media with effusion among school going children in Bangladesh

A Prospective study was carried out from Jan 2000 Jan 2003, to find out the prevalence of OME among School children The study was done in Dhaka City and adjacent areas of Dhaka City in Savar, Munshigonj and Keranigonj, Altogether 280 Students aged 4-9 years were interviewed and examined. Nineteen percent children were found to have OME. In the urban community it was 17%, but in rural areas it was 21%. In our study children with OME were more in poorer people, smoker parents and bottle fed babies. Key words: Otitis media with effusion (OME), school children.DOI: 10.3329/bjo.v15i1.4308 Bangladesh J of Otorhinolaryngology 2009; 15(1): 31-34

Clinicopathological study of sinonasal malignancy

This cross sectional study was done in the Otolaryngology and Head-Neck Surgery Department of Banghabandhu Sheikh Mujib Medical University, Dhaka Medical College Hospital and Sir Salimullah Medical College Hospital during the period of September 2003 to February 2004. In this study 30 patients of sinonasal malignancy were studied and to observe the clinicopathological pattern of sinonasal malignancy. The diagnosis was made by detailed history, clinical, radiological and histopathological examinations. In this study majority of the patients were within 40 to 70 years of age (77%). Male to female ratio was 2.33:1. Majority of the malignancy came from maxillary sinuses 15(50.00%); ethmoidal sinuses were involved in 8(26.66%) cases, multiple sinuses were involved in 5(16.66%). Neck node metastases was found in 4(14%) cases. Squamous cell carcinoma was the most common histological type (70.00%); the other less common histological types were adenoid cystic carcinoma (06.66%), adenocarcinoma (06.66%), Non-Hodgkin's lymphoma (06.66%), least frequent types were malignant fibrous histocytoma, transitional cell carcinoma, olfactory neuroblastoma. Key words: Sinonasal malignancy; clinicopathological study. DOI: 10.3329/bjo.v15i2.5058 Bangladesh J Otorhinolaryngol 2009; 15(2): 55-59