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1.
Int J Pediatr Otorhinolaryngol ; 91: 6-10, 2016 Dec.
Article in English | MEDLINE | ID: mdl-27863643

ABSTRACT

OBJECTIVE: Lingual tonsillar hypertrophy is recognized as a cause of persistent obstructive sleep apnea (OSA) after adenotonsillectomy in children. However, little has been reported regarding the complications, postoperative course and effectiveness of lingual tonsillectomy (LT). Our objective was to review the safety and effectiveness of LT in children. METHODS: Retrospective review of children undergoing LT from January 2009 to December 2015 at a tertiary children's hospital. Complications, postoperative course and polysomnographic (PSG) outcomes were recorded for all patients. RESULTS: We identified 92 children (mean age = 8.6 years, 50% female) who underwent LT; 43.5% had a syndromic diagnosis. The most common complications were emergency department presentation for bleeding (4.4%) and poor oral intake (3.3%). The readmission rate was 4.4% including 2 children (2.2%) who required operative control of hemorrhage. No children required unplanned reintubation or ICU admission. In children with PSG data (n = 18), the median apnea-hypopnea index (AHI) decreased from 8.5 to 3.8 events/hour (p = 0.022) and the median obstructive AHI (oAHI) decreased from 8.3 to 3.1 events/hour (p = 0.021). In addition, the oxygen saturation nadir increased from 83.8% to 89.0% (p = 0.0007). After surgery the percentage of patients with oAHI<5 events/hour increased from 27.8% to 61.1% (p = 0.08). CONCLUSIONS: Readmission and bleeding rates after lingual tonsillectomy in children were similar to that seen with tonsillectomy. Polysomnographic data showed that lingual tonsillectomy resulted in a significant reduction of both AHI and oAHI with a postoperative oAHI <5 achieved in 61% of patients.


Subject(s)
Palatine Tonsil/surgery , Sleep Apnea, Obstructive/surgery , Tonsillectomy/methods , Adolescent , Child , Child, Preschool , Female , Humans , Length of Stay , Male , Polysomnography/methods , Postoperative Complications/epidemiology , Postoperative Period , Retrospective Studies , Treatment Outcome
2.
Haemophilia ; 21(6): 806-11, 2015 Nov.
Article in English | MEDLINE | ID: mdl-25982122

ABSTRACT

UNLABELLED: von Willebrand disease (VWD), an inherited bleeding disorder caused by deficiency or dysfunction of von Willebrand factor (VWF) is diagnosed when a personal and often a family history of excessive mucocutaneous bleeding is present along with abnormal laboratory studies. An accurate assessment of haemorrhagic symptoms is key in suspecting VWD but presents a challenge especially in children due to overlap between normal and abnormal bleeding. Bleeding questionnaire (BQ) scores have been validated in adults and have recently been validated in children with VWD for assessing bleeding severity. However, there are limited data supporting their use prospectively in healthy children with bleeding complaints. AIM: The objectives of this study were to obtain normative data from children and validate a paediatric BQ (PBQ) to determine the discriminative ability of its total score and its individual components for identifying children likely to have VWD. METHODS: The PBQ was administered to 1281 multiethnic, healthy children between 30 days and 18 years of age presenting to a general paediatric office and to 35 children with VWD based on VWF antigen, activity and multimer pattern. RESULTS: When children with total BQ scores of 3 or more were predicted to have VWD, the sensitivity was 97.2%, the specificity was 97.1%, the positive predictive value was 48.6% and the negative predictive value was 99.9%. CONCLUSIONS: The PBQ may help discriminate a significant bleeding history from trivial bleeding, may be integrated into the primary care algorithm for evaluating children suspected with VWD.


Subject(s)
Healthy Volunteers , Hemorrhage/diagnosis , Mass Screening/statistics & numerical data , Surveys and Questionnaires/statistics & numerical data , von Willebrand Diseases/diagnosis , Adolescent , Adult , Child , Child, Preschool , Female , Hemorrhage/complications , Humans , Infant , Male , Reproducibility of Results , von Willebrand Diseases/complications
3.
Aust Vet J ; 91(3): 77-82; discussion 81-2, 2013 Mar.
Article in English | MEDLINE | ID: mdl-23438457

ABSTRACT

OBJECTIVE: To evaluate the efficacy of initial doses of desoxycorticosterone pivalate (DOCP) that are lower and less expensive than the presently recommended initial dose of 2.2 mg/kg for treating dogs with primary hypoadrenocorticism. METHODS: A retrospective study was performed on 49 dogs with primary hypoadrenocorticism, including 36 with initial DOCP doses less than 2.2 mg/kg. Medical records were reviewed for clinical data. All study dogs were followed up with telephone calls to owners or veterinarians to determine the date of death or last follow-up. Data were analysed to investigate relationships between initial DOCP dose and survival and serum Na, K and their ratio. RESULTS: Regardless of their initial DOCP dose, none of the dogs developed uncontrolled hypoadrenocorticism or severe electrolyte abnormalities or clinical problems that would have made an increase in the DOCP dose necessary. Over time, most dogs had a decrease in their DOCP dose in mg/kg, because of weight gain during treatment. No statistically significant relationships were found between initial DOCP dose and survival or post-treatment serum Na, K or Na : K, with the exception of one statistically significant result that suggested lower efficacy for higher doses. CONCLUSION: Initial DOCP doses less than 2.2 mg/kg may be effective in controlling serum electrolyte concentrations in dogs with primary hypoadrenocorticism without adversely affecting survival. If confirmed by additional research, these findings would enable practitioners to reduce the cost of DOCP treatment by using lower initial doses, potentially saving the lives of dogs that would otherwise be euthanased because of treatment expense.


Subject(s)
Adrenal Insufficiency/veterinary , Desoxycorticosterone/therapeutic use , Dog Diseases/drug therapy , Mineralocorticoids/therapeutic use , Adrenal Insufficiency/blood , Adrenal Insufficiency/drug therapy , Animals , Desoxycorticosterone/adverse effects , Desoxycorticosterone/analogs & derivatives , Dog Diseases/blood , Dogs , Dose-Response Relationship, Drug , Electrolytes/blood , Female , Hydrocortisone/blood , Male , Mineralocorticoids/adverse effects , Retrospective Studies , Treatment Outcome
4.
Osteoarthritis Cartilage ; 19(1): 96-102, 2011 Jan.
Article in English | MEDLINE | ID: mdl-21034837

ABSTRACT

OBJECTIVE: To measure in vivo thicknesses of the facet joint subchondral bone across genders, age groups, with or without low back pain symptom groups and spinal levels. METHODS: Lumbar (L1-L2 to L5-S1) magnetic resonance (MR) imaging was performed in 81 subjects (41 males and 40 females, mean age 37.6 years). Thicknesses of the subchondral bone were measured in 1620 facet joints using the MR images with custom-written image processing algorithms together with a multi-threshold segmentation technique using each facet joint's middle axial-slice. This method was validated with 12 cadaver facet joints, scanned with both MR and micro-computed tomography images. RESULTS: An overall average thickness value for the 1620 analyzed joints was measured as 1.56±0.01 mm. The subchondral bone thickness values showed significant increases with successive lower spinal levels in the subjects without low back pain. The facet joint subchondral bone thickness in asymptomatic females was much smaller than in asymptomatic males. Mean subchondral bone thickness in the superior facet was greater than that in the inferior facet in both female and male asymptomatic subjects. CONCLUSIONS: This study is the first to quantitatively show subchondral bone thickness using a validated MR-based technique. The subchondral bone thickness was greater in asymptomatic males and increased with each successive lower spinal level. These findings may suggest that the subchondral bone thickness increases with loading. Furthermore, the superior facet subchondral bone was thicker than the inferior facet in all cases regardless of gender, age or spinal level in the subjects without low back pain. More research is needed to link subchondral bone microstructure to facet joint kinematics and spinal loads.


Subject(s)
Low Back Pain/pathology , Lumbar Vertebrae/pathology , Zygapophyseal Joint/pathology , Adult , Age Factors , Analysis of Variance , Female , Humans , Lumbosacral Region/pathology , Magnetic Resonance Imaging , Male , Middle Aged , Osteoarthritis/pathology , Sex Factors , Young Adult
5.
Bone ; 39(5): 1116-1122, 2006 Nov.
Article in English | MEDLINE | ID: mdl-16782419

ABSTRACT

Based on the premise that bone mass and bone geometry are related to load history and that subchondral bone may play a role in osteoarthritis (OA), we sought to determine if static and dynamic markers of knee joint loads explain variance in the medial-to-lateral ratio of proximal tibial bone mineral density (BMD) in subjects with mild and moderate medial knee OA. We utilized two surrogate markers of dynamic load, the peak knee adduction moment and the knee adduction angular momentum, the latter being the time integral of the frontal plane knee joint moment. BMD for medial and lateral regions of the proximal tibial plateau and one distal region in the tibial shaft was measured in 84 symptomatic subjects with Kellgren and Lawrence radiographic OA grades of 2 or 3. Utilizing gait analysis, the peak knee adduction moment (the external adduction moment of greatest magnitude) and the time integral of the frontal plane knee joint moment (the angular momentum) over the entire stance phase as well as for each of the four subdivisions of stance were calculated. The BMD ratio was not significantly different in grade 2 (1.32 +/- 0.27) and grade 3 knees (1.47 +/- 0.40) (P = 0.215). BMD of the tibial shaft was not correlated with any loading parameter or static alignment. Of all the surrogate gait markers of dynamic load, the knee adduction angular momentum in terminal stance explained the most variance (20%) in the medial-to-lateral BMD ratio (adjusted r(2) = 0.196, P < 0.001). The knee adduction angular momentum for the entire stance phase explained 18% of the variance in the BMD ratio (adjusted r(2) = 0.178, P < 0.001), 10% more variance than explained by the overall peak knee adduction moment (adjusted r(2) = 0.081, P < 0.001). 18% of the variance in the BMD ratio was also explained by the knee alignment angle (adjusted r(2) = 0.183, P < 0.001), and the total explanatory power was increased to 22% when the knee adduction angular momentum in terminal stance was added (change in r(2) = 0.041, P < 0.05, total adjusted r(2) = 0.215, P < 0.001). The BMD ratio and its relationship to dynamic and static markers of loading were independent of height, weight, and the body mass index, demonstrating that both dynamic markers of knee loading as well as knee alignment explained variance in the tibial BMD ratio independent of body size.


Subject(s)
Bone Density/physiology , Osteoarthritis, Knee/physiopathology , Range of Motion, Articular/physiology , Tibia/physiopathology , Absorptiometry, Photon , Adult , Aged , Biomechanical Phenomena , Body Mass Index , Body Weight/physiology , Female , Gait/physiology , Humans , Knee Joint/physiopathology , Male , Middle Aged , Models, Anatomic , Movement/physiology , Osteoarthritis, Knee/metabolism , Osteoarthritis, Knee/pathology , Posture/physiology , Tibia/diagnostic imaging , Tibia/metabolism , Weight-Bearing/physiology
6.
Osteoarthritis Cartilage ; 11(5): 328-34, 2003 May.
Article in English | MEDLINE | ID: mdl-12744938

ABSTRACT

OBJECTIVE: The aim of the study was to assess the relationship of the radiographic joint space width (JSW) in the hip with age and a variety of physical parameters in a clinically non-arthritic population in order to identify potential age-related changes. DESIGN: One hundred and eighteen patients (58F/60M, age range 20-79 years) who underwent supine abdominal radiography for non-rheumatological indications and had no hip pain were evaluated. Height, weight and leg lengths were measured. JSW was quantified manually by a dial caliper, and femoral head diameters were determined for each hip. RESULTS: Overall, JSW was 3.61mm+/-0.58 (mean+/-SD) in the right (R) and 3.63mm+/-0.59 in the left (L) hip (range 2.34-6.1mm). There was no age-related decline in the JSW, either by decade (P=0.5 and 0.6, for R and L hips, respectively), or by individual age (Spearman's rho=-0.108 and 0.057, P=0.3 and 0.5 for R and L hips, respectively); similarly, no age-related changes were observed when each gender was analyzed separately. Women had significantly narrower hip JSW than men (P=0.001 and 0.01, R and L hips, respectively). However, gender was no longer significant after height was taken into account (P=0.26 and 0.45, for R and L hips, respectively). JSW correlated significantly with height, weight (which also correlated with height) (r=0.31/0.27 and 0.29/0.28 for height and weight R/L, respectively, P<0.004 for each), but not with body mass index (P=0.62 and 0.57, R and L, respectively). Hip JSW significantly correlated also with femoral head diameter and leg length (r=0.38/0.29 and 0.25/0.19 for femoral head and leg length, R/L, respectively). CONCLUSIONS: No effect of aging was detected on the radiographic JSW of the hip among normal individuals even at advanced ages. In contrast, height, femoral head diameter and leg length were directly related to JSW.


Subject(s)
Hip Joint/diagnostic imaging , Adult , Aged , Aging/physiology , Body Height , Body Mass Index , Body Weight , Female , Femur Head/anatomy & histology , Humans , Leg/anatomy & histology , Male , Middle Aged , Radiography , Sex Factors
7.
Int Urogynecol J Pelvic Floor Dysfunct ; 14(1): 2-7; discussion 8, 2003 Feb.
Article in English | MEDLINE | ID: mdl-12601508

ABSTRACT

Injured nerves and their motor units may undergo enhanced recovery when exposed to recombinant human insulin-like growth factor-I (rhIGF-I). The external anal sphincter muscle in the female rat was denervated to model incontinence. The treatment-group muscle was injected with rhIGF-1 plasmid, whereas in the control group the plasmid lacked the cDNA insert and the normal group received neither surgery nor treatment. Electromyography data at 56 days post surgery indicated more reinnervation without fibrillation potentials in the treatment group (2 of 6) than in the control group (0 of 6). The histology of the regenerated axons in the pudendal nerve distal to the crush site also suggested an improved recovery in the treatment group. The number of motor neurons retrogradely labeled with horseradish peroxidase was decreased by 50% following pudendal nerve crush in both experimental groups compared to the normal group. We conclude from these preliminary results that rhIGF-I gene therapy may improve the distal recovery of structure and function.


Subject(s)
Anal Canal/innervation , Genetic Therapy , Insulin-Like Growth Factor I/genetics , Nerve Regeneration , Animals , Electromyography , Female , Insulin-Like Growth Factor I/therapeutic use , Motor Neurons/physiology , Rats , Rats, Sprague-Dawley , Recombinant Proteins/therapeutic use , Urinary Incontinence/etiology , Urinary Incontinence/prevention & control
8.
AIDS Care ; 14 Suppl 1: S31-44, 2002 Aug.
Article in English | MEDLINE | ID: mdl-12204140

ABSTRACT

The multidisciplinary team model of HIV care evolved out of necessity due to the diverse characteristics and needs of people living with HIV disease. Though it is now accepted as the international standard of care, it represents a significant departure from methods of care for other infectious diseases, and debate continues regarding the effectiveness of its interventions. The debate has been largely uninformed by data; for example, little is known about the relationship between ancillary support services and primary care outcomes. We hypothesized that support services increase access to and retention in HIV primary care in an inner city public hospital clinic. We conducted a retrospective analysis of clinical data sets on 2,647 patients at the CORE Center, Chicago from 1997-1998 to investigate the relationship between four support services-case management (CM), transportation (TRANS), mental health (MH) and chemical dependency (CD)-and access to and retention in HIV primary care. We found that patients who received each of these services were significantly more likely to receive any care, regular care and had more visits than patients with no service, and retention increased by 15-18%. Female gender, younger age, self-pay status and IDU predicted less regular care. Need for all services was substantial and significantly greater in women. Outcomes improved to the greatest extent among patients who needed and received each service. We conclude that support services significantly increased access to and retention in HIV primary care. Our findings validate the multidisciplinary team model of HIV care, and suggest that health services that are tailored to the express needs of patients lead to better care and improved health outcomes. Further testing of changes in health care delivery to meet the rapidly changing needs of people living with HIV disease and respond to the constantly changing practice of HIV medicine is urgently needed to maintain and extend the advances in HIV care outcomes of the past decade.


Subject(s)
Delivery of Health Care/organization & administration , HIV Infections/therapy , Health Services Accessibility/organization & administration , Primary Health Care/organization & administration , Social Support , Adolescent , Adult , Aged , Case Management , Chicago , Child , Cohort Studies , Female , Humans , Male , Mental Health , Middle Aged , Patient Care Team/organization & administration , Patient Compliance , Retrospective Studies , Transportation of Patients
9.
Neurourol Urodyn ; 21(1): 36-40; discussion 41, 2002.
Article in English | MEDLINE | ID: mdl-11835422

ABSTRACT

Patients commonly express bother with the symptom of frequent urination. The relationship between actual voiding frequency and this symptom is undocumented. We reviewed records of 200 women who had completed 24-hour frequency-volume charts, and had indicated their degree of bother with urinary frequency utilizing the short form of the Urogenital Distress Inventory. The degree of bother was correlated with daytime and nighttime voiding frequency, maximum functional capacity, mean voided volume, and demographic variables. Among 200 women, 180 (90%) indicated at least a minor degree of bother with urinary frequency. A voiding frequency of eight or more times in 24 hours was reported by 166 (83%) of women. Among the 34 women voiding fewer than eight times/24 hours, 26 (76%) reported bother with urinary frequency. There was large variation in the degree of bother reported at a given voiding frequency. Postmenopausal women without hormone replacement therapy (HRT) recorded more nighttime voids than those on HRT. Among postmenopausal women without HRT, mean voided volume and maximum functional capacity were inversely related to patient age. Our study suggests that the currently utilized cutoff value of eight daily voids to define urinary frequency, may not be helpful in the management of women in this country. A racially diverse study of the voiding habits of asymptomatic North American women is mandated.


Subject(s)
Stress, Psychological/etiology , Urinary Incontinence/physiopathology , Urinary Incontinence/psychology , Adult , Aged , Aged, 80 and over , Aging/physiology , Circadian Rhythm , Estrogen Replacement Therapy , Female , Humans , Medical Records , Middle Aged , Retrospective Studies , Sickness Impact Profile , Urination
10.
J Hosp Infect ; 49(4): 268-73, 2001 Dec.
Article in English | MEDLINE | ID: mdl-11740875

ABSTRACT

Hospital-prepared tube feedings from four Philippine acute-care hospitals were analysed for microbial contamination. Two feedings were prepared on three separate days at each hospital. The tube feedings were either blended natural whole foods or a reconstituted commercial powdered nutritional product. Samples of each feeding were collected for coliform count and standard plate count at the time of preparation and at 1, 2 and 4 h after preparation after maintenance at room temperature (26-31 degrees C). At the time of preparation, mean coliform and standard plate counts for all samples were 10.3 most probable number per gram (MPN/g) and 7.4x10(4)colony-forming units per gram (cfu/g), respectively. Nine of 24 samples (38%) had coliform counts greater than 10 MPN/g, and 22/24 (92%) samples had standard plate counts greater than 10(3) cfu/g. There were significant increases in mean coliform and standard plate counts over 4 h (P=0.0005 and P=0.008, respectively). At 4 h after preparation, the mean coliform and standard plate counts were 18.2 MPN/g and 2.1x10(5) cfu/g, respectively. At this time, 18/24 (75%) samples had coliform counts greater than 10 MPN/g and 20/24 (83%) samples had standard plate counts greater than 10(5) cfu/g. The results of this study show that the microbial quality of the majority of the hospital-prepared enteral tube feedings analysed were not within published guidelines for safety.


Subject(s)
Colony Count, Microbial , Enteral Nutrition , Equipment Contamination , Food Microbiology , Food Service, Hospital , Food Handling , Humans , Philippines
11.
Arch Otolaryngol Head Neck Surg ; 127(10): 1271-5, 2001 Oct.
Article in English | MEDLINE | ID: mdl-11587611

ABSTRACT

OBJECTIVES: To report on our incidence of posttonsillectomy hemorrhage and to define what constituted posttonsillectomy bleeding. DESIGN: Retrospective study. SETTING: Tertiary care children's hospital and a local satellite facility. PATIENTS: A series of 1438 consecutive patients who had undergone either tonsillectomy or adenotonsillectomy between January 1, 1999, and December 31, 1999. INTERVENTION: During this period, parents were instructed to return with their children for clinical evaluation if any blood was seen in the postoperative period. MAIN OUTCOME MEASURES: Postoperative day of evaluation, age, sex, location of bleeding, management strategy, length of hospital admission, and any bleeding disorders were noted for each patient. RESULTS: A total of 112 patients underwent evaluation 134 times. Of these patients, 96 required only 1 evaluation and 16 required more than 1 evaluation. All patients who had more than 1 evaluation required intervention. The total number of children requiring intervention for posttonsillectomy hemorrhage was 51 (3.5%) of the 1438 patients. Female patients were more likely than male patients to return for evaluation. Patients who were 12 years and older were the most likely and those 3 years and younger were the least likely to have posttonsillectomy hemorrhage. The most common time from surgery to initial evaluation for hemorrhage was 6 days. CONCLUSIONS: By reviewing our own criteria for defining and recording posttonsillectomy hemorrhage, we conclude that posttonsillectomy hemorrhage is defined differently in the literature. This supports the need for a standard definition to allow for direct comparisons.


Subject(s)
Blood Loss, Surgical , Tonsillectomy , Adenoidectomy , Adolescent , Age Factors , Child , Child, Preschool , Female , Humans , Length of Stay , Male , Medical Records , Retrospective Studies , Sex Factors , Time Factors
12.
Int J Pediatr Otorhinolaryngol ; 61(3): 199-205, 2001 Dec 01.
Article in English | MEDLINE | ID: mdl-11700189

ABSTRACT

OBJECTIVE: Previous studies report a 38-78% incidence of hearing loss in children with Down syndrome (DS). The purpose of this study was to establish more up to date information about hearing loss in children with DS. METHODS: A 5-year longitudinal study following the otolaryngologic problems seen in children with DS was initiated in February, 1999 at the Children's Hospital Medical Center in Cincinnati, OH. Aggressive, 'state of the art' treatment, both medical and surgical, was provided to a group of children, (n=48), all of whom were entered into the study at an age under 2 years. Specific interventions and treatments were reviewed in regards to following and treating the children's chronic ear disease. Hearing level results at the end of the first year of the study were evaluated in this publication. This includes both pre-treatment and post-treatment audiologic results. RESULTS: After treatment of easily reversible hearing loss from chronic otitis media, either with medical or surgical treatment with PET's, 98% of the children had normal hearing levels. Only two children had residual mild hearing losses after treatment interventions. CONCLUSION: Aggressive, meticulous and compulsive diagnosis and treatment of chronic ear disease in children with DS, started soon after birth, provides significantly improved hearing levels than reported previously.


Subject(s)
Deafness/drug therapy , Deafness/surgery , Down Syndrome/complications , Anti-Bacterial Agents/therapeutic use , Child, Preschool , Chronic Disease , Deafness/complications , Eustachian Tube , Hearing Tests , Humans , Infant , Infant, Newborn , Longitudinal Studies , Male , Otitis Media/drug therapy , Otitis Media/surgery , Recurrence , Reoperation
13.
Am J Obstet Gynecol ; 185(5): 1186-90, 2001 Nov.
Article in English | MEDLINE | ID: mdl-11717655

ABSTRACT

OBJECTIVE: Our purpose was to investigate the bacteriocin susceptibility of Gardnerella vaginalis and its relationship to biotype, genotype, and resistance to metronidazole. STUDY DESIGN: Bacteriocin susceptibility of 36 G vaginalis clinical isolates was tested against a vaginal strain of Lactobacillus acidophilus by a growth-inhibition method. The relationship to biotype, genotype, and resistance to metronidazole were analyzed by the chi2 test and Fisher exact test. RESULTS: Eight G vaginalis strains (22%) were bacteriocin-resistant. Biotypes 5 and 7 were found to be the most frequent among these resistant strains. Eight (42%) of the 19 isolates classified as biotype 5, 6, or 7 were bacteriocin-resistant compared with none of the isolates that were classified as other biotypes (P <.01). Biotype 5 was found in higher prevalence among the isolates resistant to bacteriocin (62%) than among the susceptible isolates (14%) (P =.01). Genotype B was found more frequently among the bacteriocin-resistant strains, but this finding was not statistically significant (P =.71). Seven (88%) bacteriocin-resistant strains were also resistant to metronidazole. CONCLUSION: An association between biotype and an increased resistance to bacteriocin was found. The ability of G vaginalis to resist the antibacterial activity of Lactobacillus bacteriocin may be a pivotal factor in understanding bacterial vaginosis.


Subject(s)
Anti-Bacterial Agents/pharmacology , Bacteriocins/pharmacology , Gardnerella vaginalis/drug effects , Metronidazole/pharmacology , Gardnerella vaginalis/classification , Genotype , Microbial Sensitivity Tests , Pilot Projects
14.
AIDS ; 15(14): 1757-64, 2001 Sep 28.
Article in English | MEDLINE | ID: mdl-11579236

ABSTRACT

BACKGROUND: The adult human thymus contributes to de novo T cell synthesis; such synthesis can be assessed by analyzing T cell receptor excision circles (TREC). METHODS: TREC levels were measured in total peripheral blood mononuclear cells (PBMC) and CD4- and CD8-enriched cells of 29 HIV-positive patients with maximal viral suppression. The expression of CD45RA+CD45RO-, CD45RA+CD62L+, CD45RO-CD27+CD95low and HLA-DR+CD38+ was assessed using three-color flow cytometric analysis of whole blood. Thymic index score was based on computed tomographic scans of the thymus. The relationship of TREC with thymic index and the expression of the naive phenotypes was evaluated. RESULTS: TREC expression was not statistically different in these HIV-positive patients from that in age-matched HIV-negative controls. Among HIV-positive patients with CD4 cell count of > 500 x 10(6) cells/l after antiretroviral therapy (n = 15), PBMC TREC levels correlated with the expression of CD45RA+CD45RO- and CD45RA+CD62L+ naive phenotypes, and inversely correlated with the expression of HLA-DR+CD38+. The change between pre- and post-therapy CD4 cell counts for these 15 patients significantly correlated with both thymic index and expression of the CD45RA+CD45RO- phenotype. CONCLUSIONS: The finding that TREC expression was equivalent between HIV-positive patients after therapy and HIV-negative donors suggests that there is no reduction in thymic output among HIV-positive individuals after therapy. Given that TREC is inversely correlated with HLA-DR/CD38 expression, its analysis in studies of thymopoiesis should be evaluated in the context of maximum viral suppression to reduce HIV-mediated immune activation and/or by normalizing for cell turnover.


Subject(s)
Antiretroviral Therapy, Highly Active , Gene Rearrangement, T-Lymphocyte/genetics , HIV Infections/immunology , Leukocytes, Mononuclear/metabolism , Receptors, Antigen, T-Cell/blood , Thymus Gland/physiology , Adult , CD4-Positive T-Lymphocytes/immunology , CD4-Positive T-Lymphocytes/metabolism , CD8-Positive T-Lymphocytes/immunology , CD8-Positive T-Lymphocytes/metabolism , Female , HIV Infections/drug therapy , HIV Infections/virology , Humans , Leukocytes, Mononuclear/immunology , Male , Viral Load
16.
Article in English | MEDLINE | ID: mdl-11569653

ABSTRACT

The objective of this retrospective case control study was to determine whether our poor surgical outcomes were associated with the material used to construct our pubovaginal slings. Autologous rectus fascia was used in 33 patients and cadaveric fascia lata was used in 12 patients who underwent pubovaginal sling placement for intrinsic urethral sphincter deficiency (ISD). Treatment was successful in 78.8% and 33.3% of patients who underwent rectus fascia and fascia lata allograft slings, respectively (P=0.006). Based on regression analysis, the sling material was found to be strongly associated with surgical outcome after controlling for all confounding variables (beta coefficient = 1,204.6, P<0.00005). We conclude that fascia lata allografts are a poor choice for pubovaginal slings.


Subject(s)
Fascia Lata/transplantation , Rectus Abdominis/transplantation , Urethral Diseases/surgery , Urinary Incontinence, Stress/surgery , Vagina/surgery , Adult , Case-Control Studies , Fascia Lata/physiopathology , Female , Humans , Male , Middle Aged , Rectus Abdominis/physiopathology , Regression Analysis , Retrospective Studies , Transplantation, Autologous , Transplantation, Homologous , Treatment Outcome , Urethral Diseases/physiopathology , Urinary Incontinence, Stress/physiopathology , Urinary Sphincter, Artificial , Urodynamics/physiology , Vagina/physiopathology
17.
Semin Arthritis Rheum ; 31(1): 52-7, 2001 Aug.
Article in English | MEDLINE | ID: mdl-11503139

ABSTRACT

OBJECTIVES: It has been proposed that elevated blood viscosity contributes to atherothrombotic and thromboembolic processes. We evaluated whether there is increased blood viscosity in systemic lupus erythematosus (SLE) that might contribute to cardiovascular complications and reduced tissue perfusion. METHODS: Blood viscosity profiles were evaluated in SLE patients to determine whether rheologic disturbances contribute to the cardiovascular risk profile. Blood viscosity profiles were evaluated in 27 patients with SLE and 46 age- and gender-matched controls. Blood viscosity was measured at 37 degrees C and shear rates of 1 s(-1) and 100 s(-1), then corrected to the average hematocrit of the SLE patients. RESULTS: Corrected blood viscosity values were higher in SLE patients than in controls at 100 s(-1) (P =.002). Positive correlations were found between the Systemic Lupus International Collaborating Clinics/American College of Rheumatology Damage Index for SLE, which quantifies damage to 12 organ systems and fibrinogen (rho =.39; P =.042) and plasma viscosity (rho =.38; P =.049). CONCLUSIONS: Our data indicate that blood viscosity values at a standard hematocrit are elevated in SLE patients. Further investigations are needed to evaluate whether the increased blood viscosity values in SLE patients contribute to cardiovascular complications and tissue ischemia. CLINICAL RELEVANCE: Because blood viscosity values correlate with the clinical severity of SLE, blood viscosity may contribute to the cardiovascular complications and reduced tissue perfusion in SLE patients. Semin Arthritis Rheum 31:52-57.


Subject(s)
Blood Viscosity , Lupus Erythematosus, Systemic/blood , Adult , Biomarkers/blood , Cardiovascular Diseases/epidemiology , Cardiovascular Diseases/etiology , Case-Control Studies , Chicago/epidemiology , Female , Hemorheology , Humans , Illinois/epidemiology , Lupus Erythematosus, Systemic/epidemiology , Lupus Erythematosus, Systemic/physiopathology , Male , Risk Factors , Severity of Illness Index
18.
Am J Obstet Gynecol ; 185(2): 375-9, 2001 Aug.
Article in English | MEDLINE | ID: mdl-11518895

ABSTRACT

OBJECTIVE: To determine the antagonistic relationship between vaginal lactobacilli and endogenous vaginal microflora. STUDY DESIGN: Twenty-two Lactobacillus strains were studied for the production of lactic acid, hydrogen peroxide, and bacteriocin. RESULTS: Under standardized growth conditions, most strains increased their biomass by more than 4 times. Lactobacillus species grew best at a pH > or = 4.5, and growth was retarded at a pH < 4.5. Lactic acid levels were 0.68 to 2.518 mg/mL and were not related to the number of cells or the pH of media. The pH of the media was caused by the secretion of lactic and other organic acids. Approximately 80% of the strains produced H(2)O(2) and were graded as 2+ in one third of the strains and 1+ in others. No statistical correlation was found between H(2)O(2) lactic acid and bacteriocin production. Bacteriocin activity was tested on 4 strains of Gardnerella vaginalis. Approximately 80% of the lactobacilli tested produced bacteriocin that inhibited growth of G vaginalis. Six of the strains did not produce bacteriocin. Thirteen strains produced all 3 defense factors, whereas the others lacked 1 or 2 properties. CONCLUSIONS: Lactobacillus species grow best at a pH > 4.5. The pH of the media is dependent on the cell mass and on all organic acids produced by Lactobacillus species. Although all species produce organic acids, not all produce H(2)O(2) and bacteriocin. Not all strains of G vaginalis can be inhibited by lactobacilli-producing bacteriocin.


Subject(s)
Bacteriocins/biosynthesis , Hydrogen Peroxide/metabolism , Lactic Acid/biosynthesis , Lactobacillus/metabolism , Vagina/microbiology , Adult , Bacteriocins/pharmacology , Culture Media , Female , Gardnerella vaginalis/drug effects , Gardnerella vaginalis/growth & development , Humans , Hydrogen-Ion Concentration , Lactobacillus/growth & development , Species Specificity
19.
Am J Obstet Gynecol ; 185(1): 20-4, 2001 Jul.
Article in English | MEDLINE | ID: mdl-11483898

ABSTRACT

OBJECTIVE: We sought to determine whether Incontinence Impact Questionnaire (IIQ-7) and Urogenital Distress Inventory (UDI-6) scores are sensitive to changes in clinical status after surgery for genuine stress incontinence (GSI) or pelvic organ prolapse (POP). STUDY DESIGN: Patients were included in this study if they had completed the IIQ-7 and UDI-6 scales and had undergone urodynamic testing before and 3 months after surgery for GSI or POP. Kruskal-Wallis tests and logistic regression were used to compare IIQ-7 and UDI-6 scores according to the outcome of surgery. RESULTS: Among 55 patients satisfying inclusion criteria for the study, 34 (62%) underwent Burch colposuspension, and 21 (38%) underwent suburethral sling procedures for GSI; 44 (80%) patients were subjectively continent after surgery. Thirty-four (62%) patients underwent surgical treatment of their POP; 31 (90%) were subjectively cured of their POP symptoms. Mean IIQ-7 and UDI-6 scores were lower in patients who were subjectively continent, and UDI-6 scores were lower in patients who were objectively cured of GSI. CONCLUSION: UDI-6 and IIQ-7 scores change after surgery for GSI and POP, with patients who are subjectively continent having lower postoperative scores on both scales.


Subject(s)
Quality of Life , Urinary Incontinence, Stress/surgery , Uterine Prolapse/surgery , Adult , Aged , Aged, 80 and over , Female , Humans , Logistic Models , Middle Aged , Parity , Surveys and Questionnaires , Urodynamics
20.
Am J Obstet Gynecol ; 185(1): 51-5, 2001 Jul.
Article in English | MEDLINE | ID: mdl-11483903

ABSTRACT

OBJECTIVE: To establish preoperative urethral electromyographic parameters that predict which women are unlikely to be cured of genuine stress incontinence by Burch retropubic urethropexy procedures. STUDY DESIGN: Eighty-nine women who underwent preoperative urodynamic testing with urethral electromyography and retropubic urethropexy for genuine stress incontinence were prospectively studied. Raw electromyographic signals were processed by an electromyographic instrument equipped with automated motor unit analysis software programs. Quantitative electromyographic software was used to analyze the electrical activity of the urethral sphincter with use of mean rectified voltage (MRV)-mean amplitude calculated over the entire tracing after the waveform is rectified-with women at rest and during voluntary urethral squeezing, repetitive coughing, and bladder filling. Objective outcomes were determined 3 months after the operation with single-channel cystometrograms performed while subjects were standing. Nonparametric statistical analyses included the chi(2) test of association for nominal data and the Mann-Whitney test for comparison of population medians. RESULTS: All women had urethral hypermobility and met our standard clinical criteria for retropubic urethropexy. Fifteen women had incomplete follow-up data and were excluded from final analysis. Fifty-nine of 74 women (80%) were objectively cured, and 15 women had persistent genuine stress incontinence. Women who were cured did not differ from those who were not cured in age, parity, menopausal status, maximum urethral closure pressure, Valsalva leak point pressure, maximum cystometric capacity, detrusor instability, or prolapse stage. Women with persistent genuine stress incontinence were more likely to have had previous pelvic operations (P =.01). There were no differences in any electromyographic parameters at rest, with urethral squeezing, or during bladder filling between the groups. Women who were objectively cured had larger MRV values with repetitive coughing (P =.05) and larger increases from resting MRV values (DeltaMRV) with repetitive coughing (P =.04). Twenty-seven of 30 women with MRV values > or =25 microV with repetitive coughing were cured (positive predictive value [PPV] = 90%; negative predictive value [NPV] = 32%), and 22 of 24 women with more than a 10-microV increase in resting MRV values with repetitive coughing (DeltaMRV > 10 microV) were cured (PPV = 92%; NPV = 29%). If women had both an MRV value > or =25 microV and a DeltaMRV value >10 microV, the PPV was 100%; however, the NPV remained at 30%. CONCLUSION: Women who were cured of genuine stress incontinence with Burch retropubic urethropexy procedures had better motor unit action potential activation with repetitive coughing than women with persistent genuine stress incontinence. Urethral electromyography may be used to assess the neuromuscular integrity of the striated urethral sphincter and to help predict which women will have successful retropubic urethropexy procedures.


Subject(s)
Electromyography , Treatment Outcome , Urethra/physiopathology , Urinary Incontinence, Stress/surgery , Urologic Surgical Procedures , Adult , Aged , Aged, 80 and over , Electromyography/methods , Female , Humans , Middle Aged , Postmenopause , Urinary Incontinence, Stress/physiopathology , Urodynamics
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