Objectives: to assess the salivary flow rate, pH, and buffer capacity of healthy volunteers, and their relationships with age, gender, obesity, smoking, and alcohol consumption, and to establish the lower-end value of normal salivary flow (oligosialia). Methods: a prospective study was conducted in 159 healthy volunteers (age > 18 years, absence of medical conditions that could decrease salivary flow). Unstimulated whole saliva was collected during ten minutes, and salivary flow rate (ml/min), pH, and bicarbonate concentration (mmol/l) were measured using a Radiometer ABL 520. The 5 percentile of salivary flow rate and bicarbonate concentration was considered the lower limit of normality. Results: median salivary flow rate was 0.48 ml/min (range: 0.1-2 ml/min). Age younger than 44 years was associated with higher flow rates (OR 2.10). Compared with women, men presented a higher flow rate (OR 3.19) and buffer capacity (OR 2.81). Bicarbonate concentration correlated with salivary flow rate. The lower-end values of normal flow rate and bicarbonate concentration were 0.15 ml/min and 1.800 mmol/l, respectively. The presence of obesity, smoking, and alcohol consumption did not influence salivary parameters. Conclusions: in healthy volunteers, salivary flow rate depends on age and gender, and correlates with buffer capacity. Obesity, smoking, and alcohol use do not influence salivary secretion.
The objective of nursing is to increase health and well being, prevent morbidity and obtain the best physical and social rehabilitation. The nurse's role in Peritoneal Dialysis (PD) consists of promoting and supporting patients to perform self-care. In the'Text Book of Peritoneal Dialysis, published in 2000,the chapter dedicated to the nurses' role says:"Regular home visits are an important part of follow-up care, as the family and patient need to realize that continuing support is available... It is advisable that the first exchange after discharge from hospital is in the presence of a nurse... Early recognition and management of problems will assist in keeping the patient healthy and well rehabilitated, and will hopefully reduce hospital visits and inpatient stays" (1). Home care in Hospital Universitario La Paz has been developed with varying dedication over the years. Firstly, it was offered if significant problems appeared (1979-1990), later, home visits were started for some new PD patients (1990-1994) and follow up visits then ensued (1995-1996). In 1997, a project was undertaken which included home training for the first time in our unit, as well as periodic follow up visits. This project was shown to the Hospital Nurse Direction, and approved immediately. It started during the first term of 1997. There were several reasons which led us to undertake this project including the importance of providing PD at home and making it lifelong and it was felt that the hospital was an unfriendly environment in which to learn PD. The main objective was to establish early on, the patient's social environment and psychological status, and to assess how these influenced aspects of learning and adapting to PD. Most patients expressed a very good opinion about the home training. Only one patient rejected the presence of the nurse at home. The nursing team was very satisfied because early knowledge about the patient's psychosocial conditions and family environment was established. The incidence of peritonitis decreased.
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