Use of the technique of counting numbers as a predictor of slow vital capacity in hospitalized individuals

PURPOSE:to evaluate if there is a correlation between the slow vital capacity and the maximum phonation time by technique of counting numbers and if it is possible from the maximum phonation time estimate the slow vital capacity in hospitalized individuals.METHODS:it is a cross-sectional study, crossover and choice of techniques (technique of numerical count and spirometry) were performed randomly (simple draw). The slow vital capacity was measured by spirometry and maximum phonation time was assessed using the technique of counting numbers.RESULTS:participated in the research 221 hospitalized patients. A positive correlation was observed between the Slow vital capacity and maximum phonation time evaluated on an absolute (r = 0.75; p

研究目的：评估住院人群中慢肺活量（Slow Vital Capacity）与数字计数法测得的最大发声时间之间是否存在相关性，以及是否可通过最大发声时间对慢肺活量进行估算。研究方法：本研究为横断面研究，采用交叉设计，通过简单随机抽样选取数字计数法与肺量计检测技术开展相关检测。其中，慢肺活量通过肺量计进行测量，最大发声时间采用数字计数法进行评估。研究结果：本研究共纳入221名住院患者。观察到慢肺活量与数字计数法测得的最大发声时间之间存在正相关关系（r=0.75；p