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We have developed a new continuous positive airway pressure (CPAP) system, which consists of an electropneumatic regulator, a microcomputer, and a pneumotachograph placed between the endotracheal tube and the breathing circuit of the CPAP apparatus. This flow-regulated CPAP (FR-CPAP) system delivers a basal flow and also regulates this flow every 20 msec to match the patient's flow demand. To evaluate the performance of this FR-CPAP system, we compared the imposed work of breathing of the FR-CPAP and continuous flow CPAP (CF-CPAP) systems. A model lung was used to simulate spontaneous breathing. The imposed work of breathing of the FR-CPAP system was less than that of the CF-CPAP system. These results indicate that the FR-CPAP system could minimize the imposed work of breathing of a patient receiving CPAP.
M Akashi, and
K Sakanaka, and
H Noguchi, and
Y Takumi
January 1985,
Critical care medicine,
M Akashi, and
K Sakanaka, and
H Noguchi, and
Y Takumi
February 1993,
Critical care medicine,
M Akashi, and
K Sakanaka, and
H Noguchi, and
Y Takumi
April 1992,
Critical care medicine,
M Akashi, and
K Sakanaka, and
H Noguchi, and
Y Takumi
November 1989,
Critical care medicine,
M Akashi, and
K Sakanaka, and
H Noguchi, and
Y Takumi
November 1996,
Critical care medicine,
M Akashi, and
K Sakanaka, and
H Noguchi, and
Y Takumi
September 1996,
Pediatric pulmonology,
M Akashi, and
K Sakanaka, and
H Noguchi, and
Y Takumi
April 1986,
Schweizerische medizinische Wochenschrift,
M Akashi, and
K Sakanaka, and
H Noguchi, and
Y Takumi
September 2001,
Pediatrics,
M Akashi, and
K Sakanaka, and
H Noguchi, and
Y Takumi
March 1994,
Chest,
M Akashi, and
K Sakanaka, and
H Noguchi, and
Y Takumi
July 1987,
Critical care medicine,
