Measurement of Exhaled Nitric Oxide in Children: A Comparison Between NObreath® and NIOX VERO® Analyzers

PURPOSE: Few studies have compared fractional exhaled nitric oxide (FeNO) measurement by NIOX VERO® (NOV) and other devices in children. Moreover, there is no agreement between differences in FeNO values obtained using different devices in adults. Here, we compared FeNO values obtained using NOV and NObreath® (NOB) systems to derive a correction equation for children. METHODS: Eighty-eight participants (age 7–15 years) who were diagnosed with atopic bronchial asthma and visited Sagamihara National Hospital as outpatients between January and April of 2017 were included. We measured FeNO values obtained using NOB and NOV, and analyzed them using Wilcoxon tests and Altman-Bland plots. RESULTS: The median age of the participants was 11.5 years, and the scored Asthma Control Test (ACT) or Childhood ACT (C-ACT) was 25 (interquartile range, 24–25) or 26 (24–27). NOB and NOV values were significantly different (31 [14–52] versus 36 [20–59] ppb; P = 0.020) and strongly correlated (r = 0.92). An equation to convert NOB values into NOV values was derived using linear regression as follows: log NOV = 0.7329 × log NOB + 0.4704; NOB for 20, 40, 58, 80 and 100 ppb corresponded to NOV for 27, 44, 59, 73 and 86 ppb. Thus, NOB 58 ppb suggested NOB > NOV. CONCLUSIONS: NOB and NOV values were strongly correlated. Participants whose FeNO values were relatively low represented NOB NOV.

An estimation of the number of cancer patients who wanted home death based on the bereaved family survey

The primary aim of this study was to estimate the number of cancer patients who wanted home death based on the bereaved family survey.A postal survey performed on 1,137 bereaved family members in 4 regions to clarify the degree what they believed that the patient actually died where s/he had wanted on the Good Death Inventory, and to explore the preferred place of death. We calculated estimated number of patients who had wanted home death as a total of (1) the actual number of home death × the percentages of the family members who agreed that the patient actually died where s/he had wanted, and × the actual number of hospital death × the percentages of the family members who disagreed that the patient actually died where s/he had wanted and home was the preferred place of death. Estimated number of cancer patients who wanted home death was 32.8%［95%C.I., 31.7, 33.9］ in the surveyed regions, and 31.2%［95%C.I., 31.1, 31.4］ for national data.