Specifications regarding RDS class therefore the air-vented class have been in contrast to the fresh Mann-Whitney U sample
Statistics. p values < 0.05 were considered to indicate statistical significance. Values are presented as mean ± SD when not otherwise indicated.
Leads to the 16 infants get from inside the Dining table step one, and the differences when considering the fresh RDS group and you can air-ventilated communities was described in Desk 2.
The coefficient of variation (range with median in parentheses) of repeated measurements was 0-20% (6%) for FRCp, 0-13% (6%) for FRCz, 0-15%(5%) for IC, and 0-14% (5%) for Crs-max. The most marked intraindividual variation was usually seen in infants with RDS. Crs-max increased between the first and last measurement in seven infants in the RDS group, and in six of these the increase was more than 10% of the initial value. The major part of the increase occurred between the first and second P-V maneuver and was thought to represent recruitment of lung volume after deep inflation. Therefore the last two P-V curves in each infant were used when calculating IC, TLC, and Crs-max. In the air-ventilated group, the first and last P-V curves were similar.
The shape of the P-V curves varied most between individuals in the RDS group. FRCz, IC, and TLC, normalized to body weight, were significantly less in the RDS group than in the air-ventilated group(Table 2, Figs. 2 and 3). However, FRCz/weight in the two groups overlapped, whereas IC/weight did not(Fig. 3). Crs-max and Cdyn were less in the RDS group, a relation that remained after the data had been normalized to weight (Table 2). When the compliance values were normalized to volume (TLC), only Crs-max was significantly less in the RDS group (Table 2). The steepest slope of the P-V curve occurred at a higher alveolar pressure in the RDS group (range 2-8, median 6 cm H2O) than in the air-ventilated group (range 3-6, https://datingranking.net/adventist-singles-review/ median 5 cm H2O).
FRCz/TLC was greater (p < 0.05) in the RDS group (46± 10%) than in the air-ventilated group (35 ± 8%)(Table 2, Fig. 2). (more…)
