Respiration in Macaca mulatta (Rhesus Monkey)

Abstract

Summary1. The average respiratory rate, tidal air, and minute volume were measured in 39 unanesthetized, untrained, young monkeys (Macaca mulatto,) with an average weight of 2.63 kg (a- = ± 0.41 kg, e= ± 0.07 kg).2. Expressing the tidal air or minute volume in terms of body weight in kilograms, body surface area in square meters, or body weight in kilograms raised to the 0.73 power resulted in practically identical coefficients of variation.3. The mean values observed were as follows:a. Respiratory rate: 37 per minute (a=± 6.6; e= ± 1.1).b. Tidal air: 10.1 cc per kg (<r = ± 2.8 cc; e = ±0.5 cc) or 119.6 cc per square meter (a = ± 33.4 cc; e = ± 5.3 cc).c. Minute Volume: 383 cc per kg (o- = ± 129 cc; e = ± 21 cc) or 4532 cc per square meter (o- = ± 1554 cc: e = ± 248.8 cc) or 498.7 cc per kg body weight raised to the 0.73 power (a- = ± 173.2 cc; e = ±27.7 cc).4. No correlation was found between the animals' pulse rate (mean = 215 per minute) (a = ±27; t = ±4.5), which was intended as an index of excitabili...