Intestinal Helminthiasis: Risk factors and relationship with Nutritional status and Anaemia among Institutionalised Children in three States of South-East Nigeria.

BACKGROUND: Intestinal helminthiasis occurs in sub-optimal living conditions with poor hygiene practices and is more prevalent in rural, suburban and institutionalized centres. Heavy helminthic burden negatively affects the nutritional status and the severity of anaemia among children living in orphanages. AIM: To determine the risk factors and relationship of intestinal helminthiasis with nutritional status and anaemia among institutionalized children in three states of South-East Nigeria. METHODS: A cross-sectional study was conducted over seven months involving 198 children recruited from orphanages in Anambra, Ebonyi and Enugu states. Their stool samples were analyzed using the Kato-Katz and Ether concentration techniques, and packed cell volume and anthropometric indices were documented. Data were analyzed. RESULTS: Of the 198 children, 109 (55.1%) were females with a median age of 2.5 years and interquartile range (3 months - 17 years). The prevalence of intestinal helminthiasis was 2.5%. Among the children that had intestinal helminthiasis, 4 (80%) had mono-parasitism with Ascaris lumbricoides, while 1 (20%) had mixed infestation of Ascaris lumbricoides and Trichuris trichiura. There was a significant association (p=0.01) between being infested with intestinal helminthiasis and caregiver handwashing practices. The anthropometric indices demonstrated that 5.6%, 6.6% and 13.1% of the children were underweight, wasted and stunted respectively. No helminth-infested child had malnutrition and only 1 (20%) infested child had moderate anaemia. CONCLUSION: Caregivers' good handwashing practice was associated with reduced prevalence of intestinal infestations and should be encouraged. There was no relationship found between the presence of helminthic infestations and nutritional status or anaemia among the institutionalised children.

CONTEXTE: Les helmintiases intestinales surviennent dans des conditions de vie sous-optimales avec des pratiques d'hygiène médiocres et sont plus fréquentes dans les centres ruraux, périurbains et institutionnalisés. Une charge helminthique importante affecte négativement l'état nutritionnel et la gravité de l'anémie chez les enfants vivant dans des orphelinats. OBJECTIF: Déterminer les facteurs de risque et la relation entre les helmintiases intestinales, l'état nutritionnel et l'anémie chez les enfants institutionnalisés dans trois États du sud-est du Nigéria. MÉTHODES: Une étude transversale a été menée sur sept mois, impliquant 198 enfants recrutés dans des orphelinats des États d'Anambra, d'Ebonyi et d'Enugu. Leurs échantillons de selles ont été analysés à l'aide des techniques de Kato-Katz et de concentration à l'éther, et le volume globulaire et les indices anthropométriques ont été documentés. Les données ont été analysées. RÉSULTATS: Sur les 198 enfants, 109 (55,1 %) étaient des filles avec un âge médian de 2,5 ans et une plage interquartile (3 mois - 17 ans). La prévalence des helmintiases intestinales était de 2,5 %. Parmi les enfants atteints d'helmintiases intestinales, 4 (80 %) présentaient une mono-parasitose à Ascaris lumbricoides, tandis que 1 (20 %) présentait une infestation mixte à Ascaris lumbricoides et Trichuris trichiura. Il y avait une association significative (p=0,01) entre l'infestation par les helmintiases intestinales et les pratiques de lavage des mains par les aidants. Les indices anthropométriques ont montré que 5,6 %, 6,6 % et 13,1 % des enfants étaient respectivement sous-pondérés, émaciés et retardés en taille. Aucun enfant infesté par les helminthes n'était malnutri et seul 1 (20 %) enfant infesté avait une anémie modérée. CONCLUSION: La bonne pratique du lavage des mains par les aidants était associée à une prévalence réduite des infestations intestinales et devrait être encouragée. Aucune relation n'a été trouvée entre la présence d'infestations helminthiques et l'état nutritionnel ou l'anémie chez les enfants institutionnalisés. Mots-clés: Anémie, Enfants, Helminthes, Institutionnalisés, État nutritionnel.

The prevalence and intensity of intestinal helminths among institutionalized children in three states of South-East Nigeria.

Background: Intestinal helminthiasis is one of the most common and neglected diseases affecting all age groups, especially among school children. It is a disease condition of suboptimal environment and poor personal hygiene, and is more prevalent in children in institutionalized centers. Aims: This study was aimed to determine the prevalence, pattern, and intensity of intestinal helminthiasis among children in motherless babies' homes/orphanages and the relationship between the prevalence and demographic characteristics of the children. The outcome may be useful in strengthening these homes through advocacy to the appropriate authorities on general health promotion and awareness for the management of the homes. Subjects and Methods: It was a descriptive cross-sectional study carried out over 7 months (March-September 2017) in three states of the South-East Nigeria. Prior to the studies ethical clearance and permissions from relevant bodies were obtained. A total of 198 children aged 3 months to 17 years were recruited using multi-stage sampling methods from the homes and orphanages in Anambra, Ebonyi, and Enugu states. Their stool samples were collected and analyzed for ova of intestinal helminths using ether concentration and Kato-Katz techniques.Frequency tables were designed for relevant variables while quantitative variables were summarized using median and interquartile range (IQR). The relationship between demographic factors and presence of intestinal helminths amongst study participants was tested using Chi-square test and Fisher's exact test (FET) where appropriate. All analyses were done at the 5% level of significance, and a P value <.05 was considered statistically significant. Results: : Children aged 1-5 years constituting the highest proportion 110 (55.6%). The median age (IQR) of the participants was 2.5 years (3 months to 17 years). They comprised of 89 (44.9%) males and 109 (55.1%) females with a male: female ratio of 1:1.2. The overall prevalence of intestinal helminths among institutionalized children was 5/198 (2.5%). Ascaris lumbricoides only was seen in four out of five (80%) infested subjects while mixed infestation of A. lumbricoides and Trichuris trichiura was seen in one out of five (20%) subjects. All the infected subjects had light intensity of 100-300 EPG. It was noted that three out of five infested subjects were preschool children. However, the difference between the age groups and intestinal infestation was not statistically significant (P > 0.05). All the subjects with helminthic infection were females. Gender and location of motherless babies' homes/orphanages were not significantly associated with the presence of infestation (P > 0.05). Conclusion: This study showed that the prevalence and intensity of intestinal helminthiasis amongst the surveyed children in the South-Eastern Nigeria are 2.5% and more common among preschool aged children.

Seroprevalence of Toxoplasma gondii infection in Kwal, a rural distriction of Plateau-Nigeria.

Toxoplasma gondii infection has become a major public health concern in recent times due to the ravaging HIV/AIDS pandemic. The seroprevalence of T. gondii infection was determined in Kwal, a rural district of Plateau-Nigeria using IgG-ELISA. Epidemiological assessment was also conducted for the purpose of establishing the infection dynamics. Antibodies to T. gondii were detected in 30 (20.8%) of the 144 individuals studied. The prevalence of infection was slightly higher amongst the males (22.0%) than the females (20.0%), individuals of age group 21-30 years had the highest prevalence of 33.3% while the least (7.4%) occurred amongst the 41-50 years age group. No significant difference was noted (p < 0.05). The seroprevalence of Toxoplasma antibodies was significantly higher amongst individuals who handle/eat rodents (29.6%) and those who constantly had contact with soil (21.2%). These were the predominant risk factors of T. gondii infection in the area. Consequently, the infection occurred most amongst farmers (25.0%). This study contributes to the development of guidelines for the prevention and management of toxoplasmosis. Results were discussed in relation to the T. gondii epidemiological factors inherent within the population studied.

Seroprevalence of acquired toxoplasmosis in HIV-infected and apparently healthy individuals in Jos, Nigeria.

Toxoplasma gondii IgG antibody seroprevalence was studied in two different populations of 219 HIV-infected patients and 144 apparently healthy individuals (AHIs). Clinical toxoplasmosis was assessed among the HIV-infected patients. Antibodies to T. gondii were detected in 85 (38.8%, 95% CI: 32.36%-45.26%) of the HIV-infected patients and in 30 (20.8%, 95% CI: 14.20%-27.46%) of the AHIs. Among the AIHs, males represented 22.0% of infections compared to females (20.0%) and individuals within age group 21-30 years accounted for the highest prevalence of 33.3% (95% CI: 11.56%-55.10%). There was no significant difference in the trend (Chi-square, P < or = 0.05). Assessment of epidemiological factors showed higher seroprevalence of Toxoplasma antibodies among those who eat rodents (29.6%) and those who constantly have contact with the soil (21.2%). Among the HIV-infected, individuals 31-40-years-old had the highest T. gondii seroprevalence (36.5%). Evaluation of the clinical findings of patients with concomitant toxoplasmosis and HIV infection greatly implicated fever (63.5%), headache (44.7%), rashes (41.2%) and anorexia (34.1%). This study contributes to the development of guidelines for the prevention and management of toxoplasmosis in HIV-infected patients and in apparently healthy individuals in a resource scarce setting.

Prevalence of hepatitis-B surface antigen among blood donors and human immunodeficiency virus-infected patients in Jos, Nigeria.

Information is very scarce on the prevalence of hepatitis-B virus (HBV) infection among blood donors and patients with human immunodeficiency virus (HIV) infection in Nigeria. Hepatitis-B surface antigen (HBsAg) ELISA was used to determined the prevalence of HBsAg among 175 blood donors (aged 20-40 years) and 490 HIV-infected patients (aged 17-60 years) in Jos, Nigeria. Twenty-five (14.3%) of the blood donors and 127 (25.9%) of the HIV-infected individuals were HBsAg seropositive, indicating a higher HBV infection among HIV-infected persons than among healthy blood donors. A slightly higher HBsAg seroprevalence was recorded in the males (14.6%) than females (12.9%) of the blood donors. Among the HIV-infected patients, the males had considerably higher HBsAg seroprevalence than the females (31.8 vs 22.1%) with the highest prevalence of HBsAg occurring in the 51-60 years age group (44%), followed by those of 31-40 years (28.2%). Results confirmed the high endemicity of HBV infection in Jos, Nigeria and the significantly greater prevalence of HBV infection among HIV-infected patients than among blood donors.

CD4+ T-lymphocyte counts in patients with human immunodeficiency virus type 1 (HIV-1) and healthy population in Jos, Nigeria.

This study was undertaken to establish local CD4+LC standards, which could be used as indicators of immune deficiency or monitor progress of HIV therapy, instead of relying on Caucasian standards, which may not exactly reflect Nigerian CD4+LC sub-populations. CD4+LC from 1232 Nigerian adults were studied. They included 852 apparently healthy individuals, 172 HIV-positive persons with no major AIDS defining illnesses (AIDSDIL) and 208 HIV infected individuals with AIDSDIL. The mean CD4+LC of healthy Nigerians (821 +/- 12) was more than two times higher than the mean CD4+LC of HIV-positive individuals without AIDSDIL (369 +/- 14) and almost five times higher than the mean of HIV-positive individuals with AIDSDIL (163 +/- 13) (p < 0.05). In addition, a CD4+LC of < 200 cells/uL can be considered as an AIDS defining laboratory criterion in Nigerians as the 208 individuals with AIDSDIL had a mean CD4+LC of 163 cells/uL. This study therefore establishes a local standard range for CD4+LC in healthy and HIV infected Nigerians which can serve as reliable indices for HIV induced immune impairment and for monitoring effectiveness of HIV therapy.

Molecular surveillance of HIV-1 field strains in Nigeria in preparation for vaccine trials.

We conducted a national molecular epidemiologic survey of HIV-1 strains in Nigeria to determine the most prevalent subtype(s) for use in developing candidate vaccines. A total of 230 HIV-1-positive blood samples collected from 34 of the 36 Nigerian states were analyzed by our modified env gp41-based heteroduplex mobility assay (HMA) and/or gp41 sequencing and analysis. Overall, 103 (44.8%) were subtype A, 125 (54.3%) were subtype G, one (0.4%) was subtype C, and one (0.4%) was subtype J, and one (0.4%) was unclassifiable. To further characterize Nigerian viruses to aid in strain selection for candidate vaccines, one gp41 subtype G and five gp41 subtype A strains were selected for full envelope sequencing. The one subtype G sequence had consistent phylogenies throughout gp160, using programs to detect recombination. However, all five sequences that were primarily subtype A in gp41 were found to be recombinant viruses. Two of the five (40%) were A/G/J mosaics with common breakpoints. The remaining three gp160 recombinants all had their own unique break points: two A/? and one A/?/G, however, all five had the majority of their mosaic breakpoints occurring in gp41. None of the five were consistent with the circulating recombinant form (CRF)02_AG strain previously reported to be prevalent in West Africa. In conclusion, we showed a clear dominance and widespread distribution of gp41 subtypes A and G in fairly equal proportions, suggesting that vaccines designed for use in this geographic locale should incorporate the gene(s) of both subtypes. However, appreciating the magnitude of diversity of HIV-1 strains in Nigeria may require sequencing and analysis of longer gene regions for the identification of prevalent or emerging CRFs.

Carriage rate of hepatitis-B surface antigen (HBsAg) in an urban community in Jos, Plateau State, Nigeria.

The carriage rate of Hepatitis-B surface antigen (HBsAg) in an urban community in Jos, the Plateau State capital, was studied to obtain the pattern of Hepatitis-beta virus (HBV) spread within the community. HBsAg screening was performed on a consecutive sample of 524 apparently healthy individuals (293 males and 231 females) aged 15-65 years who voluntarily turned up for the survey. Fifty-four (10.3%) were HBsAg positive by ELISA. The carriage rate in females 30/231 (13.0%) was significantly higher than in the males 24/293 (8.2%) (p<0.05). In relation to age, 14/144 (9.7%) were aged <20 years, 11/121 (9.1%) were 21-30 years, 7/115 (6.1%) were 31-40 years, 14/89 (15.7%) were 41-50 years, 2/27 (7.4%) were 51-60 years and 6/28 (21.4%) were >61 years. In relation to marital status, carriage rate was highest among the divorced/widowed group (12.5%) followed by the married group (10.6%). Carriage rates in relation to occupation showed that infection was highest among traders (13.7%) and students (13.2%). The survey therefore confirms the endemicity of HBV infection in Jos and describes the groups that are at risk. This calls for health education of the general population on preventive measures to check the spread of the virus in the community.

Frequency of human toxocariasis in Jos, Plateau State, Nigeria

The enzyme-linked immunosorbent assay (Elisa) was used to examine sera of 104 children and adults in Jos, Plateau State, Nigeria for anti-toxocaral antibodies, out of which 31 (29.8) were reactive. The seropositive rates were 30.4 for adults, 29.6 for children, 34 for females and 25.9 for males. However, the differences were not significant by age and sex. A highly significant association (p < 0.001) was observed between seropositivity and geography but none between seropositivity and dog ownership (p > 0.05).

Frequency of human toxocariasis in Jos, Plateau State, Nigeria.

The enzyme-linked immunosorbent assay (Elisa) was used to examine sera of 104 children and adults in Jos, Plateau State, Nigeria for anti-toxocaral antibodies, out of which 31 (29.8%) were reactive. The seropositive rates were 30.4% for adults, 29.6% for children, 34% for females and 25.9% for males. However, the differences were not significant by age and sex. A highly significant association (p < 0.001) was observed between seropositivity and geography but none between seropositivity and dog ownership (p > 0.05).

Dobutamine stress echocardiography for preoperative cardiac risk stratification in patients undergoing orthotopic liver transplantation.

This study attempts to evaluate the efficacy of dobutamine stress echocardiography for preoperative cardiac risk stratification in patients undergoing orthotopic liver transplantation. Two hundred twenty consecutively submitted patients were evaluated in preparation for orthotopic liver transplantation. Dobutamine stress echocardiography was performed in 80 patients with known or suspected coronary artery disease. Follow-up information was available in 40 patients in the form of cardiac catheterization and/or outcome from liver transplantation to validate the dobutamine stress echo findings. The prevalence of coronary artery disease in this cohort was 5% and was closely associated with the presence of diabetes mellitus. Dobutamine stress echocardiography, when interpreted as abnormal in the presence of wall motion abnormalities only, is associated with a sensitivity, specificity, and positive and negative predictive value of 100%. Dobutamine stress echocardiography is highly efficacious and should be the screening study of choice to detect coronary artery disease in patients undergoing orthotopic liver transplantation.

Successful use of chronic epoprostenol as a bridge to liver transplantation in severe portopulmonary hypertension.

BACKGROUND: Portopulmonary hypertension, defined as mean pulmonary artery pressure >25 mmHg in the presence of a normal pulmonary capillary wedge pressure and portal hypertension, is a known complication of end-stage liver disease that has been associated with high morbidity and mortality at the time of liver transplantation. We have recently reported the successful treatment of portopulmonary hypertension with chronic intravenous epoprostenol and now report the first patient with severe portopulmonary hypertension successfully treated with epoprostenol who subsequently underwent successful liver transplantation. METHODS: A patient with severe portopulmonary hypertension was treated with intravenous epoprostenol, 23 ng/kg/min, for a 4-month period, after which the portopulmonary hypertension resolved and the patient underwent successful liver transplantation. RESULTS: The patient was discharged, continues to do well, and at 3 months is off epoprostenol with near normal pulmonary artery pressures. CONCLUSIONS: Chronic epoprostenol, in conjunction with a multidisciplinary, well-planned perioperative evaluation and treatment plan, may be the answer to a heretofore untreatable disease.

Cytoablative therapy with combined resection and cryosurgery for limited bilobar hepatic colorectal metastases.

BACKGROUND: Cryosurgery can be employed in patients with unresectable hepatic metastases when the tumor size and the number of metastases are limited. However, local recurrence can result from incomplete ablation. We proposed a trial of complete cytoablation with a combined approach of cryosurgery and hepatic resection for patients with bilobar hepatic metastases. METHODS: Seven patients underwent cryosurgery alone (CRYO). Seven additional patients underwent combined resection and cryosurgery (CRYO+RES) for bilobar metastases. RESULTS: In the CRYO group, 5 of 7 patients had at least one centrally located tumor. All 5 of these patients had early recurrence at the site of ablation. In the CRYO+RES group complete ablation was achieved in 7 of 7. Two (28.6%) of these patients developed local recurrence. CONCLUSION: Cytoablation of hepatic metastases can be safely achieved with combined hepatic resection and cryosurgery in selected patients. Long-term survival data are necessary before advocating widespread application of this approach.

The evolution of a successful liver transplant program in 1996: the clinical and administrative role of the anesthesiologist.

The establishment of a new liver transplant program requires enormous planning and resources. Extensive negotiations must take place to ensure institutional and departmental commitments to obtain the proper equipment, personnel, and other resources. The formation of a well-trained multidisciplinary team of physicians and nurses becomes the next step. Finally, ample time must be provided to adequately deploy resources, lobby referring physicians, recruit patients, and troubleshoot problems as they arise.

Methemoglobinemia associated with dapsone treatment in solid organ transplant recipients: a two-case report and review.

Dapsone, a sulfone antibiotic, has been increasingly used in solid-organ transplant recipients for the primary prevention of Pneumocystis carinii pneumonia, especially in patients with documented sulfa allergy. A known side effect of dapsone therapy, however, is methemoglobinemia, a condition leading to impaired tissue oxygen delivery. This report documents two cases of dapsone-induced methemoglobinemia in patients after solid organ transplantation with emphasis on the importance of clinical recognition and benefits of treatment. Further, the pathophysiology and causes of this condition are extensively reviewed.

Successful emergency transplantation of a liver allograft from a donor maintained on extracorporeal membrane oxygenation.

The critical shortage of cadaveric donors for organ transplantation has led many transplant centers to accept life-saving organs from donors who would have previously been refused for transplantation. We report a novel case of the use of a liver allograft from a donor whose oxygen delivery was maintained by extracorporeal membrane oxygenation (ECMO) for 29 days before suffering an anoxic brain injury from ECMO dysfunction. Liver transplantation was successfully performed in a patient with fulminant hepatic failure. Immediate graft function was obtained in the recipient, with full neurologic recovery and return to gainful employment 4 months after transplantation. ECMO may provide an intriguing option for the maintenance of organ function in the critically unstable brain-dead organ donor to salvage organs for transplantation. Further studies are currently underway.

Effects of Trendelenburg and reverse Trendelenburg postures on lung and chest wall mechanics.

STUDY OBJECTIVE: To test whether the Trendelenburg ("head-down") or reverse Trendelenburg ("head-up") postures change lung and chest wall mechanical properties in a clinical condition. DESIGN: Unblinded study, each patient serving as own control. SETTING: University of Maryland at Baltimore Hospital, Baltimore, Maryland. PATIENTS: 15 patients scheduled for laparoscopic surgery. INTERVENTIONS: Patients were anesthetized and paralyzed, tracheally intubated and mechanically ventilated at 10 to 30 per minute and at a tidal volume of 250 to 800 ml. Measurements were made before surgery in supine, head-up (10 degrees from horizontal) and head-down (15 degrees from horizontal) postures. MEASUREMENTS AND MAIN RESULTS: Airway flow and airway and esophageal pressures were measured. From these measurements, discrete Fourier transformation was used to calculate elastances and resistances of the total respiratory system, lungs, and chest wall. Total respiratory elastance and resistance increased in the head-down posture compared with supine due to increases in lung elastance and resistance (p < 0.05); but chest wall elastance and resistance did not change (p > 0.05). Lung elastance also exhibited a negative dependence on tidal volume while head-down that was not observed in the supine posture. The change in lung elastance compared with supine was positively correlated to body mass index (weight/height2) and negatively correlated to tidal volume. Lung and chest wall elastance and resistance were not affected by shifting from supine to head-up (p > 0.05). CONCLUSIONS: The Trendelenburg posture increases the mechanical impedance of the lung to inflation, probably due to decreases in lung volume. This effect may become clinically relevant in patients predisposed with lung disease and in obese patients.