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C Lloyd

Publications and source records attributed to C Lloyd.

108 records · Page 6Linked to original sources

Poles apart?

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Carbamates↗

Cook and scurvy.

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History, Modern 1601-↗

Your public image.

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Economics, Medical↗

Is serum gentamicin level a good predictor of graft injury in intestinal transplantation?

INTRODUCTION: Following intestinal transplant (SBT), the early diagnosis and treatment of rejection is a major management aim. The diagnosis of rejection is based on histology of stomal biopsies. Oral gentamycin (2.5 mg/kg) was used for selective decontamination of the digestive system. Our hypothesis was that gentamycin might be absorbed in the presence of graft dysfunction. AIM: Our goal was to assess the correlation between serum gentamycin level and the health of the intestinal graft. SUBJECTS AND METHODS: Among 33 SBT performed from 1993 to 2005, serum gentamycin levels were performed once weekly or more often when there was a suspicion of rejection. All data were analyzed retrospectively. RESULTS: Adequate trough levels were achieved for only 23 patients, six of whom had histologically proven rejection and only one did not have a raised gentamycin content. Five patients with raised levels but no rejection included two with severe intestinal ischemia and three with bowel obstruction/ileus. Four of the five patients required laparotomies. CONCLUSION: We concluded that in our study raised serum gentamycin levels were a good predictor of rejection or significant injury to the graft.

Biomarkers↗

The DNA sequence and comparative analysis of human chromosome 20.

The finished sequence of human chromosome 20 comprises 59,187,298 base pairs (bp) and represents 99.4% of the euchromatic DNA. A single contig of 26 megabases (Mb) spans the entire short arm, and five contigs separated by gaps totalling 320 kb span the long arm of this metacentric chromosome. An additional 234,339 bp of sequence has been determined within the pericentromeric region of the long arm. We annotated 727 genes and 168 pseudogenes in the sequence. About 64% of these genes have a 5' and a 3' untranslated region and a complete open reading frame. Comparative analysis of the sequence of chromosome 20 to whole-genome shotgun-sequence data of two other vertebrates, the mouse Mus musculus and the puffer fish Tetraodon nigroviridis, provides an independent measure of the efficiency of gene annotation, and indicates that this analysis may account for more than 95% of all coding exons and almost all genes.

Animals↗

A descriptive study of medical and chiropractic patients with chronic low back pain and sciatica: management by physicians (practice activities) and patients (self-management).

BACKGROUND: A practice-based study of ambulatory patients with low back pain noted a long-term outcome advantage for self-referred chiropractic (DC) patients over medical (MD) patients within a subgroup of patients with chronic low back pain and radiating pain below the knee. The frequency of self-care education by physicians in both provider cohorts coupled with current thinking on management of chronic low back pain led to an exploration and description of physicians' noncore practice activities and patients' self-management attitudes and behaviors. METHODS: A longitudinal, practice-based, observational study was undertaken in 14 general practice and 51 chiropractic community-based clinics. We enrolled 2945 consecutive patients with ambulatory low back pain of mechanical origin; of these, 268 comprised the subgroup of patients with chronic low back pain and radiating pain below the knee. The patients' low back status was followed for 1 year. Data on physicians' practice activities were obtained from doctor questionnaires completed at each patient visit and from chart abstraction. Patient data obtained from self-administered questionnaires at enrollment included sociodemographics, complaint characteristics, health status, and health encounter preferences. Questionnaires mailed at 2 weeks, 1 month, 3 months, 6 months, and 12 months collected data on low back complaint status and satisfaction with treatment. At 1 to 3 years follow-up, mailed questionnaires collected data on patients' self-management attitudes and behaviors. RESULTS: Physicians' core practice activities were as expected. Exercise plans and self-care education (>55%) were conspicuous in the frequency of their use in the DC cohort. MD patients appeared to rely more on family and friends for support during periods of back trouble. DC patients were characterized by greater self-efficacy motivation (P = .000). Both groups showed evidence of self-care activities during and between bouts of back pain, although MD patients were far more likely to choose bed rest (P = .007). CONCLUSIONS: The chiropractic encounter may have enhanced patients' self-efficacy motivation, leading to better coping abilities and better pain and disability outcomes. Understanding, respecting, and capitalizing on the role and influence of psychosocial factors can help all physicians become more effective healers and counselors for their patients with back pain.

Adult↗

High prevalence of calcified silent neurocysticercosis in a rural village of Mexico.

Human neurocysticercosis (NC) is a parasitic disease caused by TAENIA SOLIUM when its larvae lodge in the central nervous system. NC prevalence estimates are obscured by the variable and often asymptomatic clinical picture. While infection depends on exposure, severity is possibly related with various host factors (immunity, genes and gender). This epidemiological study of cranial CT scans in an endemic rural community found that 9.1% of apparently healthy subjects had calcified lesions and were completely asymptomatic. Silent NC cases did not correlate with the exposure factors tested but showed family aggregation and higher rates of positive serology. Thus, NC prevalence may be higher than currently considered and host-related factors appear to be involved in infection and pathogenesis.

Adolescent↗

Mediastinal staging of non-small-cell lung cancer.

BACKGROUND: The goal of preoperative staging of non-small-cell lung cancer (NSCLC) is to identify patients who will benefit from surgical resection. Various imaging and less invasive modalities are now available to improve therapy decision making. METHODS: The available staging methods are reviewed, including conventional methods, surgical staging, and less invasive means of pathologic staging. RESULTS: Computed tomography alone is not sufficiently accurate to stage the mediastinum, and further definitive testing is usually indicated. Positron emission tomography, along with mediastinal biopsy techniques using transbronchial needle aspiration or endoscopic ultrasound, has the potential to improve the accuracy of pretreatment staging. CONCLUSIONS: Every effort should be made to accurately discriminate between benign and malignant mediastinal disease. With further research on the proper roles of these new imaging modalities, they will become more widely used and will improve the accuracy of pretreatment staging of NSCLC.

Algorithms↗