Author (authors): Konstantin Pavlovich Buteyko
Patent Holder: same
Application N 4136914
Priority of invention of October 17, 1986
Registered in the USSR Government Register of Inventions on May 22, 1990
DETECTION OF CO2 IN ALVEOLAR AIR
This invention relates to medicine and may be used for pulmonary system
therapy. The purpose of this invention is to facilitate the method while
maintaining precision. The method is performed as follows. The sitting
patient-s expiratory capacity is timed after a 5-10 minute rest. The
level of carbon dioxide is then detected in accordance with the formula
where P is the percentage of CO2 in the alveolar air; P0 is the 3.5 minimum percentage of CO2 in the alveolar air; K=0.05 is the dependency ratio between the level of CO2 and the breath-holding time; and T is the maximum breath-holding time.
Example 1. Patient V., 32 years old. Diagnosis: bronchial asthma. CO2 level detection is performed 6 times after a 3-minute march in place and post-marching rest for 4, 5, 6, 7, 10 and 12 minutes. The results are given in Table 1.
Example 2. Patient R., 48 years old. Diagnosis: chronic bronchitis. The level of CO2 in the alveolar air was detected similarly. The results are given in Table 2.