scholarly journals Assessing the relationship between physician availability and viral load suppression in British Columbia

2017 ◽  
Vol 62 (2) ◽  
pp. 120-129
Author(s):  
Ofer Amram ◽  
Lu Wang ◽  
Paul Sereda ◽  
Jean A. Shoveller ◽  
Rolando Barrios ◽  
...  
Keyword(s):  
British Columbia ◽  
Viral Load ◽  
Viral Load Suppression ◽  
Physician Availability ◽  
The Relationship

scholarly journals The Relationship Between Staffing Sufficiently by the Workload Indicator of Staffing Needs and HIV Outcomes in Namibia

2021 ◽  
Author(s):  
Gillian I Adynski ◽  
Pamela McQuide ◽  
George Knafl ◽  
Maria Bock ◽  
Ndapewa Hamunime ◽  
...  
Keyword(s):  
Viral Load ◽  
Nurse Staffing ◽  
World Health ◽  
Viral Load Suppression ◽  
Policy Makers ◽  
Healthcare Settings ◽  
The World ◽  
Facility Level ◽  
Staffing Needs ◽  
The Relationship

Abstract Background: No study in inpatient or outpatient nurse staffing research have examined nurse staffing using the measure of the World Health Organization’s Workload Indicator of Staffing Needs, despite this being a commonly used tool to make staffing decisions across various healthcare settings around the world. This study aimed to understand the relationship between nurse staffing in HIV clinics and the patient outcomes of viral load documentation and viral load suppression in order to better understand the best ways of staffing nurses to provide the best HIV services to clients. Methods: This study modeled nurse staffing measured as the Workload Indicator of Staffing Needs, with two HIV outcomes of viral load documentation and viral load suppression in remotely located 66 hospitals, health centers and clinics in Northern Namibia. Various control variables were taken into account. Results: Sufficient nurse staffing based on the Workload Indicator of Staffing Needs was associated with better viral load documentation, however overly sufficient staffing made no difference on viral load documentation. There was no association between sufficient staffing by the Workload Indicator of Staffing Needs and viral load suppression. Conclusions: Our findings suggest that staffing sufficiently by the Workload Indicator of Staffing Needs was associated with better HIV outcomes of viral load documentation and viral load suppression at the facility level. This suggests that policy makers should continue using the Workload Indicator of Staffing Needs tool to staff their clients in order to have the best HIV outcomes possible at their facilities.

scholarly journals Pharmacokinetic-pharmacodynamic modelling of atazanavir in hair among adolescents on antiretroviral treatment in Zimbabwe

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Bernard Ngara ◽  
Simbarashe Zvada ◽  
Tariro Dianah Chawana ◽  
Charles Fungai Brian Nhachi ◽  
Simbarashe Rusakaniko
Keyword(s):  
Viral Load ◽  
Secondary Analysis ◽  
Maximal Effect ◽  
Viral Load Suppression ◽  
Regression Methods ◽  
Pharmacodynamic Modelling ◽  
Pkpd Model ◽  
Drug Potency ◽  
Adherence Monitoring

Abstract Background Drug potency is a pharmacological parameter defining dose or concentration of drug required to obtain 50% of the drug’s maximal effect. Pharmacokinetic-pharmacodynamic modelling and simulation allows estimation of potency and evaluate strategies improving treatment outcome. The objective of our study is to determine potency of atazanavir in hair, defined as atazanavir level in hair associated with 50% probability of failing to achieve viral load below 1000 copies/ml among adolescents, and explore the effect of participant specific variables on potency. Methods A secondary analysis was performed on data from a previous study conducted in HIV-infected adolescents failing 2nd line ART from Harare central hospital, Zimbabwe, between 2015 and 2016. We simulated atazanavir concentrations in hair using NONMEM (version 7.3) ADVAN 13, based on a previously established pharmacokinetic model. Logistic regression methods were used for PKPD analysis. Simulations utilising PKPD model focused on estimation of potency and exploring the effect of covariates. Results The potency of atazanavir in hair was found to be 4.5 ng/mg hair before adjusting for covariate effects. Participants at three months follow-up, reporting adequate adherence, having normal BMI-for-age, and cared for by mature guardians had increased potency of atazanavir in hair of 2.6 ng/mg, however the follow-up event was the only statistically significant factor at 5% level. Conclusion Atazanavir in hair in the range 2.6 to 4.5 ng/mg is associated with above 50% probability of early viral load suppression. Adherence monitoring to adolescents with lower potency of atazanavir is recommended. The effect self-reported adherence level, BMI-for-age, and caregiver status require further evaluation.

Observational study of the populations accessing rapid point-of-care HIV testing in Winnipeg, Manitoba, Canada, through a retrospective chart review of site records

2017 ◽  
Vol 94 (3) ◽  
pp. 194-199 ◽  
Author(s):  
James Blain Johnston ◽  
Joss N Reimer ◽  
John L Wylie ◽  
Jared Bullard
Keyword(s):  
Viral Load ◽  
Hiv Testing ◽  
Clinical Outcomes ◽  
Point Of Care ◽  
Age Groups ◽  
Linkage To Care ◽  
Hiv Positive ◽  
Hiv Status ◽  
Viral Load Suppression ◽  
Hiv Test

ObjectivesHIV point-of-care testing (POCT) has been available in Manitoba since 2008. This study evaluated the effectiveness of POCT at identifying individuals with previously unknown HIV status, its effects on clinical outcomes and the characteristics of the populations reached.MethodsA retrospective database review was conducted for individuals who received HIV POCT from 2011 to 2014. Time to linkage to care and viral load suppression were compared between individuals who tested positive for HIV using POCT and controls identified as positive through standard screening. Testing outcomes for labouring women with undocumented HIV status accessing POCT during labour were also assessed.Results3204 individuals received POCT (1055 females (32.9%) and 2149 males (67.1%)), being the first recorded HIV test for 2205 (68.8%). Males were more likely to be targeted with POCT as their first recorded HIV test (adjusted OR (AOR) 1.40). Between the two main test sites (Main Street Project (MSP) and Nine Circles Community Health Centre), MSP tested relatively fewer males (AOR 0.79) but a higher proportion of members of all age groups over 30 years old (AOR 1.83, 2.51 and 3.64 for age groups 30–39, 40–49 and >50, respectively). There was no difference in time to linkage to care (p=0.345) or viral load suppression (p=0.405) between the POCT and standard screening cohorts. Of 215 women presenting in labour with unknown HIV status, one was identified as HIV positive.ConclusionsPOCT in Manitoba has been successful at identifying individuals with previously unknown HIV-positive status. Demographic differences between the two main testing sites support that this intervention is reaching unique populations. Given that we observed no significant difference in time to clinical outcomes, it is reasonable to continue using POCT as a targeted intervention.MeSH termsHIV infection; rapid HIV testing; vertical infectious disease transmission; community outreach; service delivery; marginalised populations.

scholarly journals Landslides in weakly cemented glaciolacustrine sediments, Morkill River valley, British Columbia

2001 ◽  
Vol 38 (4) ◽  
pp. 889-900 ◽  
Author(s):  
Corey R Froese ◽  
David M Cruden
Keyword(s):  
British Columbia ◽  
River Valley ◽  
Carbonate Content ◽  
Canadian Rocky Mountains ◽  
Density Profiles ◽  
Frost Action ◽  
Dominant Component ◽  
Freeze And Thaw ◽  
Calcite Cement ◽  
The Relationship

Slopes in weakly cemented glaciolacustrine sediments in the Morkill River valley in the Canadian Rocky Mountains stand at up to 70°. Based on field and laboratory observations it appears that a contributing factor to instability is the softening of the soils by frost action and the leaching of calcite cement. Field density profiles demonstrated increased density and carbonate content with an increase in depth. Laboratory tests of carbonate content indicated a positive correlation between calcium carbonate and density in the glaciolacustrine sediments. The relationship was strongest in sands, in which leaching and dissolution were important components of softening. In clays, frost action was the dominant component of softening. Freeze-thaw tests showed a 50% decrease in strength after one cycle of freeze and thaw in the silts and clays.Key words: landslide, cemented, glaciolacustrine sediments, British Columbia.

Failure to achieve a CD4+ cell count response on combination antiretroviral therapy despite consistent viral load suppression

AIDS ◽  
2014 ◽  
Vol 28 (6) ◽  
pp. 919-924 ◽  
Author(s):  
Jemma L. O’Connor ◽  
Colette J. Smith ◽  
Fiona C. Lampe ◽  
Teresa Hill ◽  
Mark Gompels ◽  
...  
Keyword(s):  
Viral Load ◽  
Antiretroviral Therapy ◽  
Cell Count ◽  
Combination Antiretroviral Therapy ◽  
Viral Load Suppression ◽  
Cd4 Cell Count ◽  
Count Response ◽  
Cd4 Cell

Fecundity and Egg Retention of Some Sockeye Salmon (Oncorhynchus nerka) Stocks in British Columbia

1986 ◽  
Vol 43 (8) ◽  
pp. 1643-1655 ◽  
Author(s):  
J. I. Manzer ◽  
I. Miki
Keyword(s):  
British Columbia ◽  
Sockeye Salmon ◽  
Oncorhynchus Nerka ◽  
Absolute Fecundity ◽  
Egg Retention ◽  
Inadequate Sample Size ◽  
Egg Number ◽  
The Mean ◽  
The Relationship ◽  
Individual Fecundity

The fecundity and egg retention of anadromous female sockeye salmon (Oncorhynchus nerka) collected during 1971–82 from several stocks in British Columbia undergoing controlled fertilization to enhance adult sockeye production were examined. The relationship between egg number and postorbital–hypural length based on 863 females representing 14 stocks was not consistent between all age-types, stocks, and years, probably because of inadequate sample size in some instances. Combined samples, however, revealed a significant positive relationship between postorbital–hypural length and egg number for age 1.2, 1.3, and 2.2 females. Mean absolute fecundity for the respective age-types was 3218, 4125, and 3544 eggs. For samples of 10 or more females, significant stock and annual differences were detected when individual mean absolute fecundity was adjusted to a postorbital–hypural length of 447 mm, but not for females of different age. A comparison of mean fecundities for coastal stocks with historical data for interior British Columbia stocks suggests that coastal stocks are 18% more fecund than interior stocks. Possible causal mechanisms for this regional difference are hypothesized. Examination of 796 carcasses (representing five stocks) for egg retention revealed a range from totally spawned to totally unspawned females, with 56% of the carcasses containing 20 eggs or less and 68% containing 50 eggs or less. The mean egg retention based on all samples combined was estimated to be 6.5% of the mean individual fecundity. This value was reduced to 3.9% when stock means were averaged.

scholarly journals Adjacency to a harvest trail increases drought resistance of interior Douglas-fir (Pseudotsuga menziesii var. glauca) in partially harvested stands in central British Columbia

2018 ◽  
Vol 48 (7) ◽  
pp. 809-820 ◽  
Author(s):  
Neil P. Thompson ◽  
Kathy J. Lewis ◽  
Lisa M. Poirier
Keyword(s):  
British Columbia ◽  
Drought Tolerance ◽  
Pseudotsuga Menziesii ◽  
Growth Rates ◽  
Habitat Management ◽  
Odocoileus Hemionus ◽  
Douglas Fir ◽  
Ring Analysis ◽  
The Relationship

Drought tolerance of trees may be affected by competition, but most studies quantifying the relationship do not consider the effect of stem clustering. Trees are often clustered in interior Douglas-fir (Pseudotsuga menziesii var. glauca (Mayr) Franco) forests near the grassland interface in central British Columbia due to past harvesting practices or habitat management for mule deer (Odocoileus hemionus hemionus (Rafinesque, 1817)). Climate change projections indicate continued increases in temperature, an outcome that would stress trees growing in dry environments. Trees placed in different states of competition by mechanical harvesting in the 1970s were sampled to provide a 40-year comparison of three levels of competition during 1–2 year droughts. Tree-ring analysis was used to assess the reduction in growth during drought years and resumption of growth in subsequent years. A clear separation of growth rates was evident between open-growing trees, trees on the edge of harvesting trails, and trees within the unharvested interior. Edge trees had intermediate growth rates but no differences were found in the long-term climate–growth relationship compared with open-growing trees. Both Edge and Open classes showed less relative growth reduction during droughts than Interior trees growing between harvest trails. Precipitation throughfall rates and competition for resources are likely driving short-term drought tolerance in combination with other factors.

Sign in / Sign up

Export Citation Format

Share Document