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Article Abstract
We investigated the ability of a novel stand-alone, smartphone-based system, the cvrPhone, in estimating the minute ventilation (MV) from body surface electrocardiographic (ECG) signals. Twelve lead ECG signals were collected from anesthetized and mechanically ventilated swine ( = 9) using standard surface electrodes and the cvrPhone. The tidal volume delivered to the animals was varied between 0, 250, 500, and 750 mL at respiration rates of 6 and 14 breaths/min. MV estimates were determined by the cvrPhone and were compared with the delivered ones. The median relative estimation errors were 17%, -4%, 35%, -3%, -9%, and 1%, for true MVs of 1,500, 3,000, 3,500, 4,500, 7,000, and 10,500 breaths*mL/min, respectively. The MV estimates at each of the settings were significantly different from each other ( < 0.05). We have demonstrated that accurate MV estimations can be derived from standard body surface ECG signals, using a smartphone.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8742262 | PMC |
| http://dx.doi.org/10.1089/tmj.2020.0507 | DOI Listing |
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