Perceptions and practice of epidural analgesia among women attending antenatal clinic in FETHA

Paul O Ezeonu,1 Okechukwu Bonaventure Anozie,1 Fidelis A Onu,1 Chidi U Esike,1 Johnbosco E Mamah,1 Lucky O Lawani,1 Robinson C Onoh,1 Emmanuel Okechukwu Ndukwe,1 Richard Lawrence Ewah,2 Rita Onyinyechi Anozie3 1Department of Obstetrics and Gynaecology, 2Department of Anaesthesia, 3Department of Radiology, Federal Teaching Hospital Abakaliki, Abakaliki, Ebonyi State, Nigeria Background: The pain of childbirth is arguably the most severe pain that most women will endure in their lifetime. Epidural analgesia is widely used as an effective method of pain relief in labor. It provides almost complete relief of pain if administered timely, and does not affect the progress of the first stage labor.Objectives: The objective of this study was to determine the awareness and utilization of epidural analgesia in labor in pregnant women attending the antenatal clinic at Federal Teaching Hospital, Abakaliki (FETHA).Methodology: This is a cross-sectional study involving 350 women attending the antenatal clinic between April 2016 and July 2016. A total of 335 questionnaires were correctly completed, and used for analysis.Results: The average age and parity of the respondents were 27.6±8.2 years and 2.4±1.8, respectively. About 58.2% of respondents were civil servants, 98.5% were married, and 74.6% had a tertiary level of education. About 43.3% of the respondents are aware of the use of epidural analgesia in labor, but only 7.5% had used it; 95% of these were satisfied and desired to use it again. The reasons responsible for the poor uptake were desire to experience natural labor, cost, and fear of side effects. However, 70% of those who had not used it expressed the desire to use it.Conclusion: Epidural analgesia is one of the most effective methods of pain relief in labor. However, the present study indicates that knowledge and practice of epidural analgesia among parturients are low. Efforts should be made to raise awareness, dispel misconceptions, and subsidize the cost of providing this invaluable care in modern day obstetrics. Keywords: epidural, labor pain, practice, obstetric analgesia, perceptio

Progression from selective to general involvement of hippocampal subfields in schizophrenia

Volume deficits of the hippocampus in schizophrenia have been consistently reported. However, the hippocampus is anatomically heterogeneous; it remains unclear whether certain portions of the hippocampus are affected more than others in schizophrenia. In this study, we aimed to determine whether volume deficits in schizophrenia are confined to specific subfields of the hippocampus and to measure the subfield volume trajectories over the course of the illness. MRI scans were obtained from Dataset 1: 155 patients with schizophrenia (mean duration of illness of 7 years) and 79 healthy controls, and Dataset 2: an independent cohort of 46 schizophrenia patients (mean duration of illness of 18 years) and 46 healthy controls. In addition, follow-up scans were collected for a subset of Dataset 1. A novel, automated method based on an atlas constructed from ultra-high resolution, post-mortem hippocampal tissue was used to label 7 hippocampal subfields. Significant cross-sectional volume deficits in the CA1, but not of the other subfields, were found in the schizophrenia patients of Dataset 1. However, diffuse cross-sectional volume deficits across all subfields were found in the more chronic and ill schizophrenia patients of Dataset 2. Consistent with this pattern, the longitudinal analysis of Dataset 1 revealed progressive illness-related volume loss (~ 2 to 6% per year) that extended beyond CA1 to all of the other subfields. This decline in volume correlated with symptomatic worsening. Overall, these findings provide converging evidence for early atrophy of CA1 in schizophrenia, with extension to other hippocampal subfields and accompanying clinical sequelae over time

Investigation of anatomical thalamo-cortical connectivity and fMRI activation in schizophrenia

The purpose of this study was to examine measures of anatomical connectivity between the thalamus and lateral prefrontal cortex (LPFC) in schizophrenia and to assess their functional implications. We measured thalamocortical connectivity with diffusion tensor imaging (DTI) and probabilistic tractography in 15 patients with schizophrenia and 22 age-and sex-matched controls. The relationship between thalamocortical connectivity and prefrontal cortical blood-oxygenation-level-dependent (BOLD) functional activity as well as behavioral performance during working memory was examined in a subsample of 9 patients and 18 controls. Compared with controls, schizophrenia patients showed reduced total connectivity of the thalamus to only one of six cortical regions, the LPFC. The size of the thalamic region with at least 25% of model fibers reaching the LPFC was also reduced in patients compared with controls. The total thalamocortical connectivity to the LPFC predicted working memory task performance and also correlated with LPFC BOLD activation. Notably, the correlation with BOLD activation was accentuated in patients as compared with controls in the ventral LPFC. These results suggest that thalamocortical connectivity to the LPFC is altered in schizophrenia with functional consequences on working memory processing in LPF

Expression profiles of mitochondrial genes in the frontal cortex and the caudate nucleus of developing humans and mice selectively bred for high and low fear

A growing body of evidence suggests that mitochondrial function may be important in brain development and psychiatric disorders. However, detailed expression profiles of those genes in human brain development and fear-related behavior remain unclear. Using microarray data available from the public domain and the Gene Ontology analysis, we identified the genes and the functional categories associated with chronological age in the prefrontal cortex (PFC) and the caudate nucleus (CN) of psychiatrically normal humans ranging in age from birth to 50 years. Among those, we found that a substantial number of genes in the PFC (115) and the CN (117) are associated with the GO term: mitochondrion (FDR qv <0.05). A greater number of the genes in the PFC (91%) than the genes in the CN (62%) showed a linear increase in expression during postnatal development. Using quantitative PCR, we validated the developmental expression pattern of four genes including monoamine oxidase B (MAOB), NADH dehydrogenase flavoprotein (NDUFV1), mitochondrial uncoupling protein 5 (SLC25A14) and tubulin beta-3 chain (TUBB3). In mice, overall developmental expression pattern of MAOB, SLC25A14 and TUBB3 in the PFC were comparable to the pattern observed in humans (p<0.05). However, mice selectively bred for high fear did not exhibit normal developmental changes of MAOB and TUBB3. These findings suggest that the genes associated with mitochondrial function in the PFC play a significant role in brain development and fear-related behavior