Table 2

Patients' physiological changes before, during and after defecation

Group AGroup B
Before defecationDuring defecationPost defecationBefore defecationDuring defecationPost defecation
Sa,O2 %95±1.5+90±494±295±2.6+92±495±3
fc pulses·min−192±15*99±1399±1881±12#99±1894±21
RR breaths·min−120±325±718±122±4
  • Group A: patients already established on long-term oxygen therapy (LTOT)

  • group B: patients not on LTOT

  • Sa,O2: arterial oxygen saturation

  • fc: cardiac frequency

  • RR: respiratory rate

  • 6MWT: 6-min walk test

  • #: p<0.02 difference between before, during and post (two way ANOVA test)

  • *: p<0.05 difference between before, during and post (two way ANOVA test)

  • : p<0.005 difference between before and post (paired t-test)

  • +: p<0.0001 difference between before, during and post (two-way ANOVA)