Breathing frequency in sleep related respiratory disturbances

Abstract

S U M M A R Y -I n n o r m a l a d u l t s , b r e a t h i n g f r e q u e n c y (f) i s h i g h l y r e p r o d u c i b l e w i t h in a n i n d i v i d u a l r a n g i n g f r o m 8 t o 25 m i n -1 ; d u r i n g s l e e p , f isi k n o w n t o c h a n g e o n l y m i n i m a l l y . T h i s v a r i a b l e i s r a r e l y r e p o r t e d i n s t u d i e s of a d u l t s w i t h v a r i o u s s l e e p r e l a t e d r e s p i r a t o r y d i s t u r b a n c e s ( S R R D ) . W e o c c a s i o n a l l y o b s e r v e d a s p e c t a c u l a r i n c r e a s e of f d u r i n g s l e e p in p a t i e n t s w i t h S R R D a s s o c i a t e d w i t h h y p o p n e a a n d 02 d e s a t u r a t i o n . W e u n d e r t o o k a r e t r os p e c t i v e s t u d y of 650 c o n s e c u t i v e l a l l -n i g h t p o l y s o m n o g r a p h i c r e c o r d i n g s , in o r d e r to e v a l u a t e h o w o f t e n s u c h a n i n c r e a s e i n b r e a t h i n g f r e q u e n c y o c c u r s a n d w i t h w h i c h f a c t o r s it i s a s s o c i a t e d . W e e x c l u d e d p a t i e n t s w i t h m a j o r r e s p i r a t o r y f a i l u r e . W e f o u n d 16 p a t i e n t s (11

Measurement of respiratory rate using wearable devices and applications to COVID-19 detection

“…A large difference in respiratory rate between sleep stages is not expected according to Ref. 32 – 34 . However, Ref.…”

Measurement of Respiratory Rate using Wearable Devices and Applications to COVID-19 Detection

“…A large difference in respiratory rate between sleep stages is not expected according to Ref. [30–32]. However, Ref.…”

“…We note that in the validation test described in the Materials and Methods section, we computed respiratory rate during all sleep stages since we did not have sleep stage information for the data collected with the PSG and HST. A large di↵erence in respiratory rate between sleep stages is not expected according to Ref [30][31][32]…”