Virologic Failure, Clinical Characteristics, and Common Viral Mutations in HIV Patients From Southwestern Colombia: A Nested Case-Control Study.

Introduction Virologic failure due to antiretroviral drug resistance is a threat to efforts to control the human immunodeficiency virus (HIV) epidemic. Understanding the factors that influence the genetic and clinical expression of drug resistance is fundamental for infection control. Methods A nested case-control study was conducted on a cohort of adult HIV patients between 2016 and 2022. The cases were defined as patients with a confirmed diagnosis of virologic failure due to drug resistance, as indicated by a viral genotype result. The control group consisted of patients who had not experienced virologic failure or undergone any documented changes to their antiretroviral treatment. The incidence of virologic failure over a defined period was calculated. The characteristics of each group were documented in frequency tables and measures of central tendency. To identify risk factors, multiple logistic regression models were employed, and post hoc tests were conducted. All calculations were performed with 95% confidence intervals, and p-values less than 0.05 were considered significant. Results The incidence of virologic failure over the seven-year study period was 9.2% (95% CI: 7.5-11.2%). Low CD4 T-lymphocyte count (≤200 cells/mm³) at diagnosis (adjOR 14.2, 95% CI: 3.1-64.5), history of opportunistic infections (adjOR 3.5, 95% CI: 1.9-6.4), and late enrollment into an HIV program after diagnosis (>1 year) (adjOR 9.2, 95% CI: 3.8-22.2) were identified as independent predictors of virologic failure. The drugs with the highest rates of resistance were nevirapine (84.6%), efavirenz (82.4%), emtricitabine (81.3%), lamivudine (81.3%), and atazanavir (6.6%). The most prevalent major mutations identified were K103N, M184V, and M46I/M. Approximately 50% of the secondary mutations were identified in protease regions. Conclusions The incidence of virologic failure was low in the study population. The identified risk characteristics allow for the prediction of the profile of patients susceptible to failure and for the early optimization of treatment regimens.

Sarcopenic Dysphagia Is Associated With Mortality in Institutionalized Older Adults.

OBJECTIVE: To estimate mortality associated with sarcopenic dysphagia. DESIGN: A 3-year follow-up cohort. SETTING AND PARTICIPANTS: Ninety-five nursing home residents were evaluated to determine the baseline presence or absence of oropharyngeal dysphagia and followed up for 3 years. METHODS: The primary outcome was the risk of death. Dysphagia was assessed using a volume-viscosity swallow test. We used an algorithm to determine sarcopenic dysphagia based on grip strength, walking speed, calf circumference, and exclusion of neurologic or structural causes of dysphagia. We constructed 3 subgroups: without dysphagia, nonsarcopenic dysphagia, and sarcopenic dysphagia. Cox proportional regression analyses were used to predict the risk of death. RESULTS: Thirty-five percent of participants had no dysphagia, 20% nonsarcopenic dysphagia, and 45% sarcopenic dysphagia. Sarcopenic dysphagia was independently associated with a higher risk of death [hazard ratio (HR) 2.44, 95% CI 1.02-5.80, P = .043] than without dysphagia. In addition, a higher Charlson Comorbidity Index score was associated with a higher risk of death (HR 1.33, 95% CI 1.01-1.75, P = .040). CONCLUSIONS AND IMPLICATIONS: This study shows that sarcopenic dysphagia was associated with increased mortality among institutionalized older adults. These deaths could be potentially preventable.

Multimorbilidad y síndromes geriátricos. Su efecto sobre la mortalidad en adultos mayores con sepsis / Multimorbidity and geriatric syndromes. Their effect on mortality in older adults with sepsis

Resumen Introducción: la sepsis se diagnostica en más de 60% de los adultos mayores (AM) en el mundo. Estos AM con frecuencia presentan multimorbilidad y alguno de los síndromes geriátricos, llevando a discapacidad física, cognitiva y psicosocial, lo cual produce altos costos para los sistemas de salud, resultando en un problema grave de salud pública. Objetivo: identificar el impacto de la multimorbilidad y los síndromes geriátricos en la morta lidad de AM hospitalizados por sepsis en una unidad geriátrica de agudos a 30 días de su ingreso. Material y métodos: estudio observacional, analítico de casos y controles anidado en una cohorte. Resultados: se analizaron 238 pacientes con edad media de 83.15±7.12 años, 52.1% fueron mujeres y el 99% tenían al menos una comorbilidad, la mortalidad a 30 días fue 34%. La infección urinaria fue la causa principal de hospitalización (42.9%), obteniendo un aislamiento microbio-lógico en 43.3% de los casos, siendo la Escherichia coli el agente causal más frecuente (46.6%). La regresión logística múltiple mostró que la enfermedad renal crónica (OR 2.1 IC 95% 1.1-4.8; p=0.037), el delirium (OR 3.1 IC 95% 1.6-5.8; p=0.001) y la discapacidad (índice de Barthel <60; OR 3.4 IC 95% 1.5-7.5; p=0.002) se asociaron de manera significativa con la mortalidad a 30 días desde el ingreso a la unidad geriátrica de agudos en paciente con sepsis. Conclusión: en los AM hospitalizados por sepsis, la multimorbilidad, la enfermedad re nal crónica y los síndromes geriátricos representados por delirium y discapacidad fueron los predictores de mortalidad a 30 días. (Acta Med Colomb 2022; 47. DOI:https://doi.org/10.36104/amc.2022.2125).

Abstract Introduction: sepsis is diagnosed in more than 60% of older adults (OAs) worldwide. These OAs often have multimorbidity and one of the geriatric syndromes, leading to physical, cognitive and psychosocial disability with consequently high healthcare costs, resulting in a serious public health problem. Objective: to determine the impact of multimorbidity and geriatric syndromes on the 30-day mortality rate of OAs hospitalized for sepsis in an acute geriatric unit Materials and methods: an observational, analytical, nested case-control study. Results: 238 patients with a mean age of 83.15±7.12 were analyzed; 52.1% were women and 99% had at least one comorbidity; the 30-day mortality was 34%. Urinary tract infection was the main cause of hospitalization (42.9%), with microbiological isolation achieved in 43.3% of cases and Escherichia coli being the most common causal agent (46.6%). Multiple logistic regression showed that chronic kidney disease (OR 2.1 95% CI 1.1-4.8; p=0.037), delirium (OR 3.1 95% CI 1.6-5.8; p=0.001) and disability (Barthel index <60; OR 3.4 95% CI 1.5-7.5; p=0.002) were significantly related to 30-day mortality in patients with sepsis admitted to an acute geriatric unit. Conclusion: in OAs hospitalized for sepsis, multimorbidity, chronic kidney disease and geriatric syndromes (represented by delirium and disability) were the predictors of 30-day mortality. (Acta Med Colomb 2022; 47. DOI:https://doi.org/10.36104/amc.2022.2125).