6 research outputs found
Multiple typhoid perforations and typhoid psychosis a rare presentation of typhoid fever
No full textNo Abstract
Paediatric Gastrointestinal Endoscopy in a Nigerian Tertiary Hospital
No full textBackground: Gastrointestinal endoscopy is a very useful tool in the diagnosis and treatment of gastrointestinal disorders. Gastrointestinal endoscopy in paediatric practice is still evolving in Nigeria.
Objective: To determine the common indications for paediatric endoscopy in a Nigerian tertiary hospital.
Method: This was a retrospective study of all gastrointestinal endoscopic procedures performed for children aged 0 -18 years between January 2021 and March 2022. The hospital records of the children were retrieved, and data were extracted for analysis.
Results: Thirty-seven endoscopic procedures were performed on 32 children with two subjects having repeated procedures while one had both upper and lower gastrointestinal endoscopic studies. The mean age of the children was 11 ± 5.4 years with those aged between 10 and 14 years constituting the majority (40.6%). Most indications were diagnostic and the commonest indication for endoscopy was upper abdominal pain (40.6%) which was followed by upper gastrointestinal bleeding (37.6%). The endoscopic findings were mainly gastritis (56.8%), hiatus hernia (32.4%) and duodenitis (18.9%). The commonest therapeutic indication for gastrointestinal endoscopy was variceal banding.
Conclusion: Paediatric gastrointestinal endoscopy is useful for the diagnosis and treatment of paediatric gastrointestinal disorders. Upper abdominal pain and upper gastrointestinal bleeding are the leading indications for paediatric gastrointestinal endoscopy in Nigeria
Intussusception pendant la grossesse : Un compte rendu
No full textIntussusception in pregnancy is rare and making a preoperative
diagnosis is extremely difficult. The objective of this paper is to
report a case of intussusception in a pregnant woman and to review the
literature on the subject with a view to highlighting the peculiarities
of this condition. The case file of a 26 year old Gravida 3, Para 0+2
lady who had appendectomy 5 years earlier and now presented at 33 weeks
of gestation with features of intestinal obstruction was evaluated.
Ultrasound scan showed dilated bowel loops suggestive of intestinal
obstruction. At operation, an ileo-ileal intussusception was found
without a lead point. Histology of the resected bowel segment showed
haemorrhagic infarction without evidence of malignancy. Even though
bands and adhesions are the commonest causes of intestinal obstruction
in a patient that has had a previous abdominal surgery, possibility of
other aetiological factors should always be considered (Afr J Reprod
Health 2010; 14[1]:145-148).L’intussusception dans pendant la est peu commun et la diagnostic
préopératif est extrêmement difficile. Cet article a
pour but de rapporter un cas d’intussusception chez une femme
enceinte et de passer en revue la littérature sur le sujet en vue
de mettre l’accent sur les particularités de cet état.
Nous avons évalué le dossier d’une jeune femme de 26
ans (gravide 3, nullipare 0 + 2) qui a su l’appendicectomie cinq
ans plus tôt et qui maintenant présente après 33
semaines de gestation, les traits de l’occlusion intestinale. Au
cours de l’intervention chirurgicale on a découvert une
intussusception iléo-iléale sans point de dérivation.
L’histologie du segment de l’intestin réséque a
montré l’infarctus hémorragique sans
l’évidence de la malignité. Bien que les brides et les
adhésions constituent les causes les plus communes de
l’occlusion intestinale chez une patiente qui ont déjà
subi une intervention chirurgicale, il faut considérer la
possibilité d’autres facteurs étiologiques (Afr J
Reprod Health 2010; 14[1]:145-148)
Intussusception pendant la grossesse : Un compte rendu
No full textIntussusception in pregnancy is rare and making a preoperative
diagnosis is extremely difficult. The objective of this paper is to
report a case of intussusception in a pregnant woman and to review the
literature on the subject with a view to highlighting the peculiarities
of this condition. The case file of a 26 year old Gravida 3, Para 0+2
lady who had appendectomy 5 years earlier and now presented at 33 weeks
of gestation with features of intestinal obstruction was evaluated.
Ultrasound scan showed dilated bowel loops suggestive of intestinal
obstruction. At operation, an ileo-ileal intussusception was found
without a lead point. Histology of the resected bowel segment showed
haemorrhagic infarction without evidence of malignancy. Even though
bands and adhesions are the commonest causes of intestinal obstruction
in a patient that has had a previous abdominal surgery, possibility of
other aetiological factors should always be considered (Afr J Reprod
Health 2010; 14[1]:145-148).L’intussusception dans pendant la est peu commun et la diagnostic
préopératif est extrêmement difficile. Cet article a
pour but de rapporter un cas d’intussusception chez une femme
enceinte et de passer en revue la littérature sur le sujet en vue
de mettre l’accent sur les particularités de cet état.
Nous avons évalué le dossier d’une jeune femme de 26
ans (gravide 3, nullipare 0 + 2) qui a su l’appendicectomie cinq
ans plus tôt et qui maintenant présente après 33
semaines de gestation, les traits de l’occlusion intestinale. Au
cours de l’intervention chirurgicale on a découvert une
intussusception iléo-iléale sans point de dérivation.
L’histologie du segment de l’intestin réséque a
montré l’infarctus hémorragique sans
l’évidence de la malignité. Bien que les brides et les
adhésions constituent les causes les plus communes de
l’occlusion intestinale chez une patiente qui ont déjà
subi une intervention chirurgicale, il faut considérer la
possibilité d’autres facteurs étiologiques (Afr J
Reprod Health 2010; 14[1]:145-148)
Intussusception in Pregnancy - A rarely considered diagnosis
No full textIntussusception in pregnancy is rare and making a preoperative diagnosis is extremely difficult. The objective of this paper is to report a case of intussusception in a pregnant woman and to review the literature on the subject with a view to highlighting the peculiarities of this condition. The case file of a 26 year old Gravida 3, Para 0+2 lady who had appendectomy 5 years earlier and now presented at 33 weeks of gestation with features of intestinal obstruction was evaluated. Ultrasound scan showed dilated bowel loops suggestive of intestinal obstruction. At operation, an ileo-ileal intussusception was found without a lead point. Histology of the resected bowel segment showed haemorrhagic infarction without evidence of malignancy. Even though bands and adhesions are the commonestcauses of intestinal obstruction in a patient that has had a previous abdominal surgery, possibility of other aetiological factors should always be considered.(Afr J Reprod Health 2010; 14[1]:145-148)
Canonical integration methods for Hamiltonian dynamical systems
No full textHamiltonian systems possess dynamics (e.g., preservation of volume in phase space and symplectic structure) that call for special numerical integrators, namely canonical methods. Recent research in this aspect have shown that canonical numerical integrators may be needed for Hamiltonian systems. In this thesis, we explore possibilities for the construction of integrators that preserve the property of being canonical. We characterize explicit methods as compositions of 1-stage methods. We find coefficients for methods having minimum work per step. We study in more detail the relationship between canonical, symmetric and order conditions. We also analyze linearized stability. We perform numerical experiments to investigate the importance of being canonical. Examining the solution orbits we discover that numerical integrators possess the same characteristics as the flow of the original system. However, for a variety of test problems we demonstrate equally good results for integrations that merely have the right linearized stability property. We also perform numerical experiments to investigate the improvement that higher-order integrators have over lower-order integrators. This seems to be an interesting research problem, since lower-order methods are currently widely in use in real practical simulations. To direct interest to the application of higher-order methods, serious numerical experiments have to be made to find out their efficiency over lower-order methods. We show that for the two-body problem, the error growth in time for variable step size canonical methods is not in general quadratic. The error growth in time in the case of second-order integrators, canonical or non-canonical turns out to be approximately linear.Made available in DSpace on 2011-05-07T13:13:25Z (GMT). No. of bitstreams: 2
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