Search results for "RCA"
showing 10 items of 3171 documents
Characteristics and Prognostic Value of Morning Dipping of Peak Expiratory Flow Rate in Stable Asthmatic Subjects
1985
Characteristics and prognostic relevance of morning dip of peak expiratory flow rate (PEFR) were evaluated in stable asthmatic subjects. Among 246 outpatients monitored four times daily for two weeks, 38 (group A) showed a significant difference between morning reading of PEFR and each of the others; they were compared to 38 randomly selected patients (group B) not showing morning dip in PEFR. Less frequent seasonal course, extrinsic pathogenesis, and sensitization to mites characterized group A; starting airflow limitation was more severe in those with morning dip, but no significant difference between mean PEFR measured throughout two weeks was found. At 6 to 12 weeks, morning dip was not…
Spontaneous gastroesophageal reflux and airway patency during the night in adult asthmatics
2000
Controversies still exist on the role of nighttime gastroesophageal reflux (GER) in precipitating nocturnal asthma. We tested the relationship between GER and nocturnal bronchoconstriction by continuously and simultaneously monitoring both respiratory resistances and esophageal pH in seven asthmatics with moderate to severe GER disease. Twenty-nine GER episodes were found during the study night lasting more than 5 min (LGER) and 72 not longer than 5 min (SGER). Both long (LGER) and short (SGER) gastroesophageal refluxes were able to maintain significantly higher lower respiratory resistances (RLR) at the resolution of each GER episode (RLR(e)) with respect to baseline values. RLR, expressed…
Revisional bariatric surgery due to failure of the initial technique: 25 years of experience in a specialized Unit of Obesity Surgery in Spain.
2019
Abstract Objectives To evaluate the effectiveness of conversion surgery in a bariatric surgery unit with 25 years of experience. Method Retrospective observational study of patients with type II obesity or higher who were reoperated by means of conversion surgery due to weight regain, residual body mass index (BMI) >35 kg/m2 or Results A total of 112 patients were included, with a mean age of 40.2 years, who initially underwent vertical banded gastroplasty (VBG) (32.1%), gastric banding (GB) (23.2%), Roux-en-Y gastric bypass (RYGB) (21.4%) and sleeve gastrectomy (SG) (23.2%). The conversion techniques, with a median time between the two surgeries of 70 months, included: RYGB, SG, one-anasto…
Night-Time Shift Work and Related Stress Responses: A Study on Security Guards
2020
Work-related stress can induce a break in homeostasis by placing demands on the body that are met by the activation of two different systems, the hypothalamic&ndash
Blood pressure changes after automatic and fixed CPAP in obstructive sleep apnea. Relationship with nocturnal sympathetic activity.
2011
Treatment of obstructive sleep apnea (OSA) by continuous positive airway pressure (CPAP) usually causes a reduction in blood pressure (BP), but several factors may interfere with its effects. In addition, although a high sympathetic activity is considered a major contributor to increased BP in OSA, a relationship between changes in BP and in sympathetic nervous system activity after OSA treatment is uncertain. This study was undertaken to assess if, in OSA subjects under no pharmacologic treatment, treatment by CPAP applied at variable levels by an automatic device (APAP) may be followed by a BP reduction, and if that treatment is associated with parallel changes in BP and catecholamine exc…
Telemedicine for pediatric surgical outpatient follow-up: A prospective, randomized single-center trial
2018
Telemedicine is gaining popularity for a variety of indications. We performed a randomized controlled trial comparing telemedical versus conventional clinic follow-up in terms of feasibility and quality.Patients discharged from pediatric surgery were randomized to telemedical or onsite follow-up. In the telemedical group, video telephony was used to obtain interim history and physical findings. Onsite patients were personally seen in the outpatient clinic. Caregivers completed a postvisit survey on satisfaction and efficiency. Providers scored data transmission quality and clinical interpretability.From March 2015 until January 2017, 224 patients were randomized equally to the study groups.…
Conventional and spectral power analysis of all-night sleep EEG after subchronic treatment with paroxetine in healthy male volunteers.
1998
Paroxetine is a selective and potent serotonin reuptake inhibitor with reported antidepressant properties. Since changes in the regular sleeping pattern were described as side effects under treatment with paroxetine, the impact of the drug on the sleep architecture is of major interest. The present study addressed the question of subchronic effects of paroxetine medication (30 mg/day) in eight healthy male volunteers in a double blind, placebo-controlled crossover-design. Conventional sleep EEG parameters and additionally computed spectral power analysis based on FFT of 20-s time epochs in the delta, theta, alpha, beta and gamma frequency range for different sleep stages after 4 weeks of tr…
Diurnal variations in visual performance for disposable contact lenses.
2013
The purpose of this study is to compare the visual performance provided by different daily disposable contact lenses and to analyze its variation over time.Visual performance was evaluated in terms of visual acuity (VA) and contrast sensitivity (CS) in 15 myopic subjects (-0.50 to -4.00 diopters) who had been previously fitted with each one of the following seven types of soft contact lenses: DAILIES TOTAL1 (Alcon, Forth Worth, TX), DAILIES AquaComfort Plus (Alcon), 1-DAY ACUVUE TruEye (JohnsonJohnson Vision Care, Jacksonville, FL), 1-DAY ACUVUE MOIST (JohnsonJohnson Vision Care), SofLens daily disposable (BauschLomb, Rochester, NY), Proclear 1 Day (CooperVision, Fairport, NY), and Clariti …
Effects of subchronic paroxetine administration on night-time endocrinological profiles in healthy male volunteers
2000
Abstract To evaluate the subchronic effects of paroxetine, a selective serotonin reuptake inhibitor, on nocturnal endocrinological profiles, eight healthy male volunteers with no personal or family history of a psychiatric or neurological disease were administered paroxetine (30 mg/day) or placebo in a double-blind cross-over design. Drugs were given as a single dose at 10:00 h for a period of 4 weeks each. Between days 21 and 28 of each treatment period, sleep EEG was registered for four consecutive nights from 23:00 to 07:00 h. During the last night, hormonal profiles for prolactin, growth hormone (GH), cortisol, corticotropin (ACTH), luteinizing hormone (LH), testosterone and melatonin w…
Sub-acute effects of interferon-α2 on adrenocorticotrophic hormone, cortisol, growth hormone and prolactin in humans
1992
Abstract This study investigated the chronic effects of interferon-α2 (IFN-α2) on hormonal secretion in humans. Six patients suffering from chronic hepatitis B or C infection received SC doses of 3 million IU IFN-α2 three times a week for 4 mo. Each patientwas examined for hormone secretion four times: the day before initial IFN-α2 administration (day 0), the day of the first injection (day 1), and 4 wk after start of IFN therapy on days 27 (without IFN administration) and 28 (with IFN administration). Adrenocorticotrophic hormone (ACTH), cortisol, growth hormone (hGH), and prolactin (PRL) were measured in plasma samples drawn at 30-min intervals between 1600h and 2400h. Acute administratio…