Effect of a nutraceutical combination on sleep quality among people with impaired sleep: a randomised, placebo-controlled trial.

In this randomised, placebo-controlled trial, adults with impaired sleep (Pittsburgh Sleep Quality Index ≥ 5) were randomly assigned using a minimization algorithm to receive a formulation containing L-theanine plus lemon balm, valerian, and saffron extracts, or placebo, during 6 weeks. Objective sleep quality parameters were measured using an actigraphy device. We enrolled and randomised 64 individuals, 31 from the active group and 27 from the placebo group completed the 6 week follow-up. Mean sleep efficiency remained unmodified in the active group, and increased by 3% in the placebo group, the between-group difference in the change was not statistically significant (p = 0.49). Total sleep time also improved more with placebo (13.0 vs. 1.33 min, p = 0.66). Time wake after sleep onset (WASO) decreased more in the active group (4.6% vs. 2.4%), but the difference was not significant (p = 0.33). Mean PSQI decreased by 3.11 points (32.3%) in the active group, and by 3.86 points (39.5%) in the placebo group (p = 0.41). SF-36 increased more with placebo (+ 18.3 in active, + 32.1 in placebo, p = 0.68). Salivary cortisol remained unchanged in both groups. No serious adverse events were reported. Among adults with impaired sleep, a nutraceutical combination did not improve objective or subjective sleep parameters more than a placebo infusion.

Split-night polysomnography at Fundación Santa Fe de Bogotá / Caracterización de estudios de noche partida en la Fundación Santa Fe de Bogotá

Abstract Introduction: The obstructive sleep apnea-hypopnea syndrome (OSAHS) is usually established using polysomnography (PSG). Most patients diagnosed with this condition receive treatment with continuous positive airway pressure (CPAP). The conventional approach requires performing a full-night PSG and CPAP titration over a two-night stay in a sleep laboratory, which is costly and may present scheduling difficulties. However, the combined use of polysomnography and CPAP titration in a single night, procedure known as split-night polysomnography (SNPSG), is less-expensive and is a time saving strategy for diagnosis and treatment. Objectives: To characterize the SNPSG studies conducted in the sleep laboratory of the Hospital Universitario Santa Fe de Bogotá (HUFSFB) and assess their performance in the diagnosis and treatment of OSAHS. Materials and methods: Retrospective, observational and longitudinal study performed on a sample of 221 patients. Results: 208 (94.1%) SNPSG studies were compatible with OSAHS. Most cases (54.7%) had a hypopnea apnea index (AHI) ≥30. Adequate CPAP titration was achieved in 78% of patients who had severe AHI (p=0.00). Conclusions: OSAHS was diagnosed and an adequate CPAP titration was achieved in most of the SNPSG studies of the analyzed sample.

Resumen Introducción. El diagnóstico del síndrome de apnea/hipopnea obstructiva del sueño (SAHOS) se realiza mediante estudio de polisomnografía (PSG) y la mayoría de los pacientes con este diagnóstico recibe tratamiento con presión aérea positiva continua (CPAP). Este abordaje convencional requiere dos estudios de PSG: uno diagnóstico y otro de titulación. El uso combinado de PSG diagnóstica y de titulación en una sola noche, conocido como noche partida (PSGNP), es una alternativa diagnóstica y terapéutica válida que optimiza la utilización de tiempo y recursos. Objetivo. Caracterizar los estudios de PSGNP realizados en el laboratorio de sueño del Hospital Universitario de la Fundación Santa Fe de Bogotá (HUFSFB) y evaluar su desempeño. Materiales y métodos. Se realizó un estudio observacional analítico de tipo longitudinal retrospectivo de una muestra de 221 pacientes. Resultados. Se registraron 208 (94.1%) estudios de PSGNP compatibles con SAHOS, de los cuales la mayoría de los pacientes (54.7%) presentaron un índice de apnea hipopnea (IAH) >30. En 78% de los pacientes que presentaban IAH severo se logró una titulación adecuada del CPAP (p=0.00). Conclusiones. En la mayor parte de los estudios de PSGNP de la muestra analizada se diagnosticó SAHOS y se consiguió una titulación adecuada del CPAP.