David Varlotta

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In clinical practice, cardiac output (CO) is usually reported as the average of thermodilution determinations with injection of the thermal indicator performed at end-exhalation. However, an average of multiple determinations with injections equally dispersed throughout the respiratory cycle has been shown to provide the best estimate of mean CO. This study(More)
Background: The RightSpotpHTM indicator is a new device designed to facilitate pH-based confirmation of nasogastric tube placement while minimizing exposure of the operator to nasogastric contents. Study objectives: In vivo and in vitro validation of the RightSpotpHTM indicator. Findings: Patients (23) undergoing general anesthesia had placement of a(More)
BACKGROUND The RightLevelpH indicator is a new device designed to measure the pH of gastric aspirate obtained via a nasogastric tube while minimizing exposure of the operator. OBJECTIVE To validate the RightLevelpH indicator in vivo and in vitro. METHODS With general anesthesia, 20 patients had placement of a nasogastric tube and a gastric pH electrode(More)
BACKGROUND The RightSpotpH™ indicator is a new device designed to facilitate pH-based confirmation of nasogastric tube placement while minimizing exposure of the operator to nasogastric contents. STUDY OBJECTIVES In vivo and in vitro validation of the RightSpotpH™ indicator. FINDINGS Patients (23) undergoing general anesthesia had placement of a(More)
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