Preliminary study of the baseline characteristics of patients, etiological agents of community-acquired pneumonia and mortality in Ibadan, Nigeria.

BACKGROUND: Studies relating the baseline characteristics of patients with community-acquired pneumonia and the bacterial etiological agents to the mortality of the disease are scanty in our environment. This study therefore aimed at determining the contribution of the baseline characteristics of patients with community-acquired pneumonia, the bacterial etiological agents to the mortality in our environment. METHODS: Data of patients with community-acquired pneumonia were retrieved and the effects of these on mortality were studied retrospectively. These data included age, gender, occupations, marital status, smoking, severity assessment using CURB 65 score, alcohol use, sources of referral, and bacterial etiological agents. These were subjected to statistical analysis using the SPSS version 15. RESULTS: The age groups with the highest mortality frequencies were those below 30 years (41.1%) and above 60 years (29.4%). Marital status, gender of patients, use of alcohol and smoking did not seem to affect the mortality rates. Eight patients had concomitant chronic obstructive pulmonary disease and four died (50.0%) while 12 patients had bronchial asthma, none of whom died. Patients with Pseudomonas aeruginosa infections had the highest mortality rates (5.9% and 17.6%) in cases of single and multiple pathogens respectively. None of the patients had severity score documented on admission. CONCLUSION: This is a preliminary study and further studies are necessary to determine the relationship of smoking, alcohol and etiological agents to mortality in community-acquired pneumonia using a larger population as study size.

Atopy is associated with asthma in adults living in rural and urban southwestern Nigeria.

RATIONALE: Factors affecting the course of asthma are not clearly understood in rural and urban communities within low-resource countries. Furthermore, the interactions between atopy, environmental exposure, and helminthic infections in modulating asthma have not been well investigated. OBJECTIVES: To conduct a feasibility study to examine the relationship between atopy and asthma in adults at two rural Health Centers and urban university college hospital in southwestern Nigeria. METHODS: A convenient sample of 55 consecutive patients with stable physician-diagnosed asthma and 55 age-matched nonasthmatic controls seen at the outpatient clinics in two rural Health Centers and an urban university hospital were enrolled. All subjects underwent blood test, allergy skin test, and stool examination for ova and parasites. Wilcoxon sign-rank tests were used to compare serum eosinophilia and allergy skin test between the two groups. RESULTS: Asthmatics in both urban and rural settings had significantly more positive skin reactions to house dust mite, cockroach, mold, and mouse epithelium than nonasthmatic controls (p < .05). Mean total serum IgE was also significantly higher in asthmatics than in nonasthmatic controls (360 vs. 90 IU/L, p <.001). Stool parasitemia was infrequent in both groups and not statistically significant. CONCLUSION: Atopy is associated with adult asthma in southwest Nigeria. Larger studies to confirm the nature of this association and to examine the role of helminthic infection and other environmental factors on the expression of asthma are needed.

Pulmonary tuberculosis among health care workers at two designated DOTS Centers in urban city of Ibadan, Nigeria.

BACKGROUND & OBJECTIVES: Tuberculosis (TB) infection control interventions are not routinely implemented in many Sub-Saharan African countries including Nigeria. This study was carried out to ascertain the magnitude of occupationally-acquired pulmonary TB (PTB) among health care workers (HCWs) at two designated DOTS centers in Ibadan, Nigeria. METHODS: One year descriptive study (January-December 2008) was carried out at the University College Hospital and Jericho Chest Hospital, both located in Ibadan, Nigeria. A pre-tested questionnaire was used to obtain socio-demographic data and other relevant information from the subjects. Three sputum samples were collected from each subject. This was processed using Zeihl-Neelsen (Z-N) stains. One of the sputum was cultured on modified Ogawa egg medium incubated at 37 ° C for six weeks. Mycobacterium tuberculosis was confirmed by repeat Z-N staining and biochemical tests. RESULTS: A total of 271 subjects, 117 (43.2%) males and 154 (56.8%) females were studied. Nine (3.3%) had their sputum positive for acid fast bacilli (AFB) while six (2.2%) were positive for culture. The culture contamination rate was 1.8 per cent. Significantly, all the six culture positive samples were from males while none was obtained from their female counterparts. About half of the AFB positive samples were from subjects who have spent five years in their working units. Eight AFB positive cases were from 21-50 yr age group while students accounted for seven AFB positive cases. INTERPRETATION & CONCLUSIONS: The study shows that occupationally-acquired PTB is real in Ibadan. Further studies are needed to ascertain and address the magnitude of the problem.

Five year review of treatment outcome of directly observed therapy (DOT) for re-treatment pulmonary tuberculosis patients in UCH, Ibadan, Nigeria.

Tuberculosis (TB) is a major health problem in Nigeria. The country is currently fourth among the 22 high-burden countries (HBCs) of the world, with an incident of all new cases of 311/100,000 population per year out of which 137/100,000 population are smear positive and prevalence of 616/100,000 population. To highlight the burden of re-treatment smear positive pulmonary TB with and without HIV infection and determine how directly observed therapy (DOT) using the retreatment regimen has affected the treatment outcome in the management of these patients. A five-year retrospective study from April 2003 to March 2008 to evaluate the treatment outcome data of re-treatment pulmonary TB who were also screened and confirmed for HIV at the outpatient clinic of the University College Hospital Ibadan, Nigeria. The effect of HIV status and treatment outcome was assessed so also the prevalence of HIV among recurrent FPTB patients. The total number of cases assessed was 127. Majority of the patients were between the ages of 20 to 49 (73.2%). Forty-two of the PTB patients were HIV positive (33.1%). The treatment outcome was as follows: Cured 81 (63.8); Treatment completed 13(10.2%); Died 22 (17.3%); Defaulted four (3.1%) and transferred out seven (5.5%) More patients were cured and had treatment completion among the HIV negative patients compared with HIV positive patients (p < 0.0001) The mortality was higher in those with HIV positive than negative patients (p < 0.0001). Re-treatment pulmonary TB is frequent at this referral centre. A contribution to re-treatment prevention entails more rigorous management of new TB cases, particularly at lower levels of care. This effort will reduce the emergence of multi-drug resistant (MDR-TB) tuberculosis.

Outpatient pulmonary rehabilitation in severe chronic obstructive pulmonary disease.

OBJECTIVES: An outpatient programme for rehabilitation of patients with severe ventilatory impairment due to chronic obstructive pulmonary disease (COPD) was conducted. Its main purpose was to assess the feasibility of the programme for COPD patients. METHODS: Initial assessment included a shuttle walking test, administration of the chronic respiratory disease questionnaire (CRDQ), assessment of the hospital anxiety and depression scale (HAD) and sickness impact profile (SIP). The patients were entered into a 6-week outpatient programme between January 2007 to July 2007 during which they attended twice weekly for a 2 1/2 hour session. Assessment was repeated on completion of the study at three months and later at six months. RESULTS: The study included 44 (28 males) patients with COPD with a mean age 66 years. All patients had severe ventilatory impairment as defined by a forced expiratory volume in one second (FEV1) of less than 40% of predicted. The shuttle walking distance improved significantly and was maintained at the improved level for six months. The improvement in all four dimensions of the CRDQ was statistically significant (p < 0.05) and reached clinical significance for fatigue and for mastery. On entry, a notable level of depression was found in 32% of patients, and anxiety in 40 percent. There was a significant reduction in both of these that was maintained at six months (p < 0.05). There was no improvement in the SIP at three months, but significant improvement was found at six months (p < 0.05). CONCLUSIONS: This study shows that a successful outpatient programme can be conducted in patients with severe ventilatory impairment, and that benefits in physical ability and in health-related quality of life (HRQOL) can be achieved. The improvements were maintained at six months.

Effectiveness and safety of adjustable maintenance dosing with budesonide/formoterol turbuhaler compared with traditional fixed doses in bronchial asthma: a multi-centre Nigerian study.

The modern treatment guideline of bronchial asthma recognize that combination of long acting beta2-agonists and inhaled glucocorticoids, enables better control of inflammation and symptoms of asthma than inhaled glucocorticoids only. These guidelines recommended that patients are educated to adjust their medication to their asthma severity using physician-guided self-management plans. However, many patients take a fixed dose of their controller medication and adjust their reliever medication to asthma symptoms Therefore, combination of formoterol and budesonide can be delivered at different dosing level without the need to change inhalers. This study examined whether asthma control improved if patients adjusted the maintenance doses(AMD) ofbudesonide/formoterol (Symbicort, 80/ 4.5 microg and 160/4.5 microg) according to asthma severity compared with traditional fixed dosing (FD) regimens. This was a prospective open randomized trial carried out in five teaching hospitals across Nigeria between 15th July 2002 and 15th July 2003. Patients with bronchial asthma who met the enrollment criteria were randomized to receive either adjustable dosing or fixed dosing for a period of twelve weeks. The results obtained at the start and the end of the study showed that budesonide/formoterol combination effectively achieved and maintained control of asthma. The adjustable dosing achieves more effective control compared to fixed dosing in terms of the number of patients that are redistributed to less severe forms of persistent asthma. The percentage of patients with intermittent asthma increased from 9.3% at randomization to 55.6% at the end of therapy with more patients at the AMD arm of treatment. Also for mild persistent asthma there was an increase from 20.4% to 24.1%. This showed that at the end of treatment, majority (79.7%) of the patients had intermittent and mild persistent asthma. The frequency of use of budesonide/formoterol in the two arms of treatment showed that patients in the adjustable groups used less number of inhalations of budesonide/formoterol for treatment on average of 2.5 inhalations per day compared to those on fixed dosing who used 4 inhalations per day (p = 0.0001). The number of times patients stayed awake because of asthma was noticed to be more reduced at the adjustable arm of treatment but this was of no statistical significance. It is therefore concluded, that budesonide/formoterol combination in a single inhaler is a simple, well tolerated, convenient treatment which provides effective control of bronchial asthma using a practical self-management plan consistent with current guidelines.

Risk factors for pulmonary tuberculosis among health-care workers in Ibadan, Nigeria.

Data on TB infection control programs is limited in many of the TB high burden countries. We carried out a one-year cross sectional epidemiological study (January-December, 2008) to determine the prevalence of occupationally-acquired pulmonary tuberculosis (PTB) among Health- Care Workers (HCWs) in Ibadan, Nigeria. This information is important for planning preventive strategies. All consenting HCWs at two TB centres in Ibadan--the University College Hospital (UCH) and Jericho Chest Hospital were enrolled into the study. A well structured questionnaire was used to obtain information on socio-demographic characteristics of the subjects including their medical and social data. Three sputum samples collected from each subject were processed for acid-fast bacilli (AFB) and culture on selective medium. Isolates were confirmed as M. tuberculosis by standard biochemical tests. Of the 271 subjects recruited, nine (3.3%) had their sputum positive for AFB while six (2.2%) were positive for culture. Subjects aged 20 years and above, female gender and unskilled professionals had higher risk for occupationally-acquired PTB than those who were 20 years and below, male gender and skilled professionals (Odd Ratio OR = 1.9, 95% Confidence Interval, 95% CI = 0.23-16.3, Fisher's exact P = 0.37; OR = 1.1, 95% CI = 0.28-4.0, p = 0.01; OR = 1.05, 95% CI = 1.02-1.08, p = 3.43) respectively. Multivariate logistic regression analysis showed that subjects who received BCG vaccination were less likely to have occupationally-acquired PTB than those without vaccination (OR = 0.86, 95% CI = 0.20-3.6, p = 0.83 for microscopy; OR = 0.76, 95% CI = 0.13- 0.44, p = 0.76 for culture). Even though the risk for occupationally-acquired PTB was lower in subjects who had not spent up to two years in their units, the association was not statistically significant (OR = 0.84, 95% CI = 0.20-3.5, p = 0.82 for microscopy and OR = 1.21, 95% CI = 0.22-0.65, p = 0.82 for culture). There is a need to develop and implement affordable and cost-effective TB infection control strategies in Nigeria in order to reduce the burden of occupationally-acquired PTB in the country.

Trends in bacterial pathogens of lower respiratory tract infections.

OBJECTIVES: This study was conducted to determine the bacterial aetiology of lower respiratory tract infections in this environment as well as update the clinicians in the various antimicrobial alternatives available in the treatment. METHODS: Between September 2002 and February 2005, 157 bacterial pathogens from 556 patients with lower respiratory tract infections were isolated from sputum specimens, and subjected to susceptibility testing, using standard bacteriologic techniques. RESULTS: Out of the 556 cases, only 150 (27%) had an established bacterial aetiology. One pathogen was demonstrated in 143 (95.3%) patients and seven (4.7%) had mixed infections. The most prevalent single pathogen was Klebsiella pneumoniae (38%) while the most prevalent bacterial combination was Klebsiella and Pseudomonas species (2%). Isolates of Klebsiella pneumoniae were susceptible to ciprofloxacin, gentamicin and ceftriaxone. CONCLUSIONS: Bacteriological diagnosis and antibiotic resistance surveillance are indispensable in the effective management of lower respiratory tract infections.

Time to sputum culture conversion and treatment outcome among the first cohort of multidrug resistant tuberculosis patients in a high burden country.

BACKGROUND: Sputum conversion considered the most important interim indicator of the efficacy of anti-tuberculosis treatment was assessed at varying time points among the first cohort of multidrug resistant tuberculosis (MDR-TB) patients in a National TB Control Programme. METHODS: A retrospective study was conducted for the period between 2010 and 2013, at the premiere MDR-TB treatment center in Nigeria. Genexpert, culture and drug susceptibility tests were carried out. Total duration of treatment was 20 months. RESULTS: A total of 115 patients were studied consisting of 76 (66.1%) males and 39 (33.9%) females with ages ranging between 15 and 65 years. Median time to sputum conversion was 2.06 months (95% confident interval [CI] = 1.82, 2.30). At the end of the first month, 43 (37.4%) patients sputum converted, increasing to 104 (90.4%) at the end of three months. There was no significant interaction with Human Immunodeficiency Virus (HIV) status. Overall treatment success was 69.4%. The default rate was 8.7% (10/115) and 25 (21.7%) deaths were recorded. CONCLUSION: The treatment success rate in the study was high with most of cases with or without HIV infection, achieving sputum culture conversion within 2 months of commencing treatment. Expansion of MDR-TB treatment services is necessary to reduce the death rate.

Pulmonary tuberculosis in Ibadan: a ten-year review of laboratory reports (1996-2005).

Tuberculosis (TB) control programme is a balance between accurate diagnosis of the disease and effective treatment of cases to eliminate the disease in the community. We carried out a retrospective review of the specimens processed in the TB laboratory of the Department of Medical Microbiology, University College Hospital, Ibadan between 1996 and 2005. Majority of the specimens processed were sputum (75.2%) while cerebrospinal fluid and aspirates from other sources accounted for 4.3% and 20.5% respectively. Of the sputum processed, 2,738 (62.4%) were from male patients while 1,650(37.6%) were from female patients giving a male to female ratio of 1.66:1.00. Only 380 (9.5%) were reported smear positive while 477 (10.9%) were positive for culture. Three hundred and four (6.9%) were smear negative but culture positive while 207 (4.7%) were smear positive but negative for culture. Those sputum that were missed by smear microscopy (6.9%) were only confirmed by culture after six to eight weeks incubation. This culture method is only available in few reference centers in Nigeria. Thus, undiagnosed cases resulting from inadequate diagnostic facilities contribute an impediment to TB control efforts in the community. Hence there is an urgent need to have more accurate, affordable tools that would be available for use at the all levels of health care to achieve total eradication of TB in the community.

ASSESSMENT OF SOCIOECONOMIC STATUS AND CONTROL OF ASTHMA IN ADULTS.

BACKGROUND: Asthma is a chronic disease which places considerable economic, social and public health burdens on the society. Education, occupation and income are the most widely used indicators of socioeconomic status (SES). Studies have shown increased asthma hospital admissions for those who are materially deprived and increased asthma severity in low social class groups. The aim of this study is to determine the impact of socioeconomic status on control of asthma in adults. METHOD: The study was a cross-sectional analytical one, conducted over a year at the Medical Outpatient Clinic of the University College Hospital Ibadan. The study population was composed of 355 randomly selected adults aged between 18years and 55years with an established diagnosis of asthma already on treatment. RESULTS: Respondents with monthly income of 40000 and above had a higher proportion with good asthma control (74.1%) compared to those that earned 10000 to 39999 (69.0%) and less than 10000 (47.8%). This was statistically significant. Respondents in occupational class I/II had a slightly higher proportion with good asthma control (70.9%) compared to those in occupation class III/IV (70.1%) and occupation class V/VI (50.6%). This was statistically significant at p = 0.003. CONCLUSION: Respondents in the higher occupational class had better asthma control than respondents in the lower occupational class. Respondents who were earning 40000 and above as monthly income had better control of asthma than other respondents. After adjusting for other variables, the predictor of good asthma control was monthly income of the respondents.

ADVERSE EVENTS TO FIRST LINE ANTI-TUBERCULOSIS DRUGS IN PATIENTS CO-INFECTED WITH HIV AND TUBERCULOSIS.

BACKGROUND: The combination and use of multiple drugs in the treatment of tuberculosis (TB) predispose to adverse drug events and reactions. This study evaluated the incidence, frequency, and severity of adverse events to first line anti-tuberculosis (anti-TB) drugs in patients with TB and co-infections with Human Immunodeficiency Virus (HIV). OBJECTIVE: The objective of this study was to determine the effects of HIV status on the risk of developing adverse events to first line anti-TB therapy. METHOD: The study was carried out between 2006 and 2007 when TB therapy was administered without concomitant anti-retroviral therapy. Patients with TB presenting at the chest clinic of a tertiary hospital were sequentially enrolled. Those with TB alone were allocated to the first group while those with TB-HIV infection were allocated to a second group. A checklist of adverse events to the drugs was used to screen for adverse drug events and reactions during the period of anti-TB therapy. Adverse drug events were graded as serious and others (mild-moderate). RESULTS: One hundred and three patients completed the study. Thirty one (30.1%) of the patients had TB-HIV co-infection. Majority (70.4%) of the events were detected during the first week of therapy, 92% of these events were mild-moderate. Eight (25.5%) of those with TB-HIV co-infection had serious adverse events. All the serious events occurred in the TB-HIV group. Independent factors for occurrence of ADEs include HIV status, increasing age, and female gender. CONCLUSION: The rate of adverse drug events among patients on first line antituberculosis treatment was higher in HIV co-infected patients.

Pattern of presentation of tuberculosis and the hospital prevalence of tuberculosis and HIVco-infection in University College Hospital, Ibadan: a review of five years (1998 - 2002).

A 5-year review (1998-2002) was done at the pulmonary unit of the University College Hospital (UCH), Ibadan, Nigeria to determine the pattern of presentation of tuberculosis (TB) and the prevalence of TB and human Immunodefiency virus (HIV) co-infection. A total of one thousand patients were managed for TB but 777 confirmed as having TB had their case files analysed. There were 418 males and 359 females giving a male to female ratio of 1.16:1.00. Pulmonary tuberculosis (PTB) accounted for 78.6% of the patients seen over the period, followed by tuberculosis meningitis 7.8% then TB spine 6.8% and that of the lymph node 4.1%. The other types of TB (Abdomen, pericardial and miliary) accounted for less than 3%. The highest number of cases of tuberculosis (27.8%) was in the 20-29 age group for both male and female followed by those less than 40 years (26.0%). Less than 20% (18.3%) were 40 years old and above. The number of TB cases decreased sharply from a total of 188 in the year 2000 to 89 in 2002. The decrease in number was most likely due to the fact that directly observed therapy short course (DOTS) are now available at other centres within the city and its environs. Only 180 out of the 640 cases of TB were confirmed as HIV positive giving a seroprevalence rate of 28.12%. The annual distribution of TB/HIV co-infection showed a rising trend from 26 cases in 1998 to 42 cases in 2002.

COMPARATIVE EFFICACY AND SAFETY OF CEFIXIME AND CIPROFLOXACIN IN THE MANAGEMENT OF ADULTS WITH COMMUNITY-ACQUIRED PNEUMONIA IN IBADAN, NIGERIA.

BACKGROUND: Initial antibiotic therapy in upper and lower respiratory tract infections is usually empirical. However, the decreasing susceptibility of respiratory pathogens to antibacterials have raised concerns about the decreasing efficacy of currently available antibiotics. OBJECTIVE: This study was conducted to compare the efficacy and safety of cefixime and ciprofloxacin in the empirical treatment of community-acquired pneumonia among adult Nigerian patients in Ibadan. METHOD: This was an open-labelled, randomized, parallel-group study of seventy-three (73) radiologically and bacteriologically confirmed adult cases of community-acquired pneumonia, between July 1 and September 31, 2011 at two health care facilities in Ibadan, Nigeria. All of these patients had severity index (CURB 65) scores of either 1 or 2. They were treated with either Cefixime, 400mg twice daily or Ciprofloxacin 500mg twice daily for 14 days. They were evaluated four times during the course of their treatment for clinical responses, radiological and bacteriological clearances and safety of therapy. RESULTS: There were 39 (53.4%) patients in the Cefixime group and 34(46.6%) in Ciprofloxacin group. On day 7, patients on cefixime had a statistically significant lower temperature than patients on ciprofloxacin (P<0.01). By day 14, only 10.3% of patients in cefixime group still had persistent residual radiological changes compared to 38.2% in the ciprofloxacin group (P < 0.01). Bacteria cure was obtained in 96% of the patients in the cefixime group and 83% in the ciprofloxacin group. CONCLUSION: Cefixime was found to be superior to ciprofloxacin in terms of efficacy in the treatment of community-acquired pneumonia in adults in Nigeria. However, both antibiotics were well-tolerated by all the patients as there were no reports or documentation of adverse events.

Prevalence of psychosis in tuberculosis patients and their nontuberculosis family contacts in a multidrug treatment-resistant treatment center in Nigeria.

OBJECTIVE: This study aimed at determining the prevalence of psychosis in tuberculosis (TB) patients in comparison to nontuberculosis control and its correlation with disease pattern. METHOD: One hundred and fifteen patients with TB and 112 family members visiting the multidrug treatment-resistant treatment center at University College Hospital Ibadan Centre were screened for psychological distress with the General Health Questionnaire (GHQ-12). Presence of a psychotic condition was determined by the Psychosis Screening Questionnaire and the Structured Clinical Interview for DSM-IV Axis I Disorder and was compared with severity of pulmonary TB. RESULTS: After adjusting for age, predictors of high/positive GHQ include the following: duration of TB ≥4years [odds ratio (OR)=4.02, 95% confidence interval (CI)=1.29-11.13], extrapulmonary TB (OR=3.45, 95% CI=1.02-14.11), severe disease extent (OR=5.27, 95% CI=1.05-13.01) and disease category 2 (OR=2.38, 95% CI=1.01-7.99), and predictors of psychosis are as follows: duration of TB ≥4years (OR=3.99, 95% CI=1.51-9.88), extrapulmonary TB (OR=3.88, 95% CI=1.55-9.98), severe disease extent (OR=9.55, 95% CI=2.15-18.05) and disease category 2 (OR=2.86, 95% CI=1.14-7.55). CONCLUSION: In view of high prevalence of psychological distress and psychosis in TB, care of TB patients should include consultative-liaison psychiatric care.

The clinical efficacy of fluticasone propionate (Fluvent) compared with beclomethasone dipropionates (Becotide) in patients with mild to moderate brochial asthma at the University College Hospital, Ibadan, Nigeria.

This open, randomized trial was conducted at the Medical Out patient Department of University College Hospital, Nigeria to compare the clinical efficacy of Beclomethasome dipropionate (Becotide) with Fluticasone propionate (Fluvent) in patients with mild to moderate bronchial asthma. The study was performed as a week screening, 8-weeks open comparative clinical trial involving Fluticasone propionate (Fluvent) at a daily dose of 22 microg and Beclomethasone Dipropionate (Becotide) at a dose of 400 microg daily delivered through pressurized metered-dose inhaler (pMDI). The main objective of this study is to assess the efficacy of Fluvent in patients with mild to moderate asthma compared to Becotide. At the second visit (end of 1 week), 10 patients were given either Becotide of Fluvent but all were maintained on as needed beta2agonist (Salbutamol inhaler) therapy throughout the study. Efficacy was assessed by changes in symptoms, number of times beta2-agonist was used and results of pulmonary function tests (PEFR and FEV1) while safety was assessed by adverse event experiences. The baseline characteristics of the patients randomized into the two drug groups were comparable and of no statistical significance. The changes in the pulmonary function tests as well as the reduction in the asthma symptoms suggest a statistically significant improvement in the asthma status of the patients. However, these changes were more rapid among the patients using Fluvent. Also, there was higher percentage decline in the episodes of asthma symptoms either in the morning, day or night in the Fluvent group than Becotide group. The drugs were well tolerated and no adverse event was noticed on any of the patients. We therefore concluded that Fluvent would be more efficacious than Becotide in the treatment of Asthma.

Respiratory symptoms and ventilatory function of the bakery workers in Ibadan, Nigeria.

A total of five hundred Bakery workers were studied to assess occupational induced lung impairment as a result of exposure to grain and flour dust. Occupational related symptoms were recorded using structured questionnaire. Age and sex matched controls consisting of 500 University College Hospital (UCH) Ibadan workers and students were used. They were apparently healthy and work and live at places free of fumes and smoke. Peak expiratory flow rate (PEFR) was measured in all subjects. However, full spirometry work up was done on 100 bakery workers and 100 control subjects that had been selected using simple random sampling technique. The most frequent pulmonary symptoms among the bakery workers were sneezing and running nose (53.30%) and periodic breathlessness/chest tightness (23.16%) while the symptom of cough/phlegm present in (21.53%) of the subjects. The mean PEFR of the bakery workers (463.20 + 51.39 L/ min) was significantly lower (P < 0.0001) than that of the control subjects (538.0 + 47.23 L/min). Similarly, the mean values of FEV1, FVC and FEV1% were also significantly lower than the control subjects. The findings indicate that respiratory symptoms are common during the working hours among the bakery workers and 23.16% of the subjects studied suffered some degree of airway obstruction.

An open study to evaluate the safety and efficacy of zafirlukast ("Accolate") in patients with mild to moderate asthma in Ibadan, Nigeria.

An open study to evaluate the safety and efficacy of Zafirlukast (oral leukotriene-receptor antagonist) in patients with mild to moderate asthma was conducted at the out-patient department of the University College Hospital (UCH), Ibadan. A total of 30 patients aged 16-70 years were screened into the trial but 20 patients that fulfilled the inclusion and exclusion criteria were enrolled in a 7-week open study to receive 20mg b.i.d. of "Accolate". Efficacy of treatment was assessed by changes in symptoms, beta-agonist use and pulmonary function tests (PEFR and FEV1). Safety was assessed by adverse experiences, laboratory test results, results of physical examination and chest-x-ray (when necessary). Zafirlukast (Accolate) significantly decreased daytime asthma symptoms scores (28.8%), night-time awakenings (80.76%), morning with asthma (36.4%) and beta-agonist use (31.3%) and significantly increased the mean PEFR values (11.3%); FEV, (17.4%) at end point from their baseline values. Changes in symptoms, beta-agonist use, and pulmonary function occurred within the first week of zafirlukast treatment and continued throughout the trial. Zafirlukast was well tolerated. Headache was reported in two patients. No significant changes were observed in laboratory test results, findings on physical examination. I concluded that zafirlukast produces early and sustained effects in the treatment of mild-to-moderate asthma.

Computed tomographic evaluation of TB spine in Ibadan.

BACKGROUND: Tuberculosis still remains a major problem in the developing countries. The involvement of the spine is also of increasing importance, because of the resurgence of TB in association with AIDS. This paper is designed to evaluate the applicability of CT in the diagnosis and definition of tuberculosis of the spine in Ibadan. METHOD: A restrospective study of the Computed Tomographic examination of 22 cases of spinal tuberculosis (Pott's disease) over a four-year period at the Radiology Department of the University College Hospital, Ibadan. RESULTS: There was a male prevalence in the study. The mean age of respondents was 41.2 years. Neurological symptoms and back pain were the most common presentations. The thoracic spine was mostly involved while the cervical spine was least involved. Most lesions 77.3 % were demonstrated in two contiguous vertebral bodies. The vertebral bodies were destroyed in all the patients while the posterior elements were involved in 59%. The other CT findings were paravertebral soft tissue shadow in 40.9%, narrowed irregular disc spaces in 27.3% and fusion of vertebral bodies in 13.6%. The frequent bony destruction was osteolytic in nature, and was present in 64% of patients. CONCLUSION: CT is an adequate modality for thorough imaging and diagnosis of Pott's disease especially in patients with non specific or ambiguous presentations. It offers a unique opportunity of demonstrating clearly the various component of the spine, it also defines the pattern and extent of the destructive process.

Respiratory symptoms and ventilatory function of the sawmillers in Ibadan, Nigeria.

A total of five hundred sawmillers in Ibadan were studied to assess occupation-induced lung impairment as a result of exposure to saw dust. Occupation-related symptoms were recorded using structured questionnaire. Age and sex matched controls consisting of 500 University College Hospital (UCH) Ibadan workers or students were used. They were apparently healthy and work and live at places free of fumes and smoke. Peak expiratory flow rate (PEFR) was measured in all subjects. However, full spirometry work-up was done on 120 sawmillers and 120 control subjects that had been selected using simple random sampling technique. The most frequent pulmonary symptoms among the sawmill workers were running nose and sneezing (57.40%) and productive cough (34.30%), while the symptoms of dyspnoea and wheezing were each present in (4.10%) of the subjects. The mean PEFR of the sawmillers (463.8 +/- 63.4 L/min) was significantly lower (P < 0.0001) than that of the control subjects (537.7 +/- 71.5 L/min). Similarly, the mean values of FEV1, FVC and FEV1% (FEV1%) were also significantly lower in the FVC sawmillers than the control subjects. The findings indicate that respiratory symptoms are common during the working hours among the sawmillers and 4.1% of the subjects studied suffered some degree of airway obstruction.