Table 2 Temperature and humidity

Diesel et al. 1991

x

35-39.5 °C

Timing of particles as they travelled the 1-cm distance from 1 grid bar to the next

↓ with ↓ temp

Eckerbom et al. 1991

x

HME vs no HME

Bronchoscopy and gamma camera

↑ with HME

Kilgour et al. 2004

x

30-37 °C

100% relative humidity

Timing movement of reflective particles in the mucus across a calibrated eyepiece graticule

↓ with ↓ temp

Lippman et al. 1975

x

−10° - 30 °C

Rectilinear scanner and the calculated time required for a bolus of tagged particles to move a fixed distance along the trachea

↓ with ↓ temp

Puchelle et al. 1989

x

Absolute humidity of 9 g water/m³ vs 30 g water/m³

Ciliary transport capacity analysed using the frog palate technique and transport velocity assessed by measuring transit time to pass over a 2 mm portion of the palate

↓ with ↓ humidity

Sears et al. 2015

x

0 - 37 °C

37 - 25 °C

24.5 – 39.5 °C

Microscopy and reviewing videos and tracking the motion of individual particles.

↑ with ↑ temp

↓ with ↓ temp