title: Heart rate and increased intravascular volume.
abstract: The objective was to establish whether an intravascular volume increase leads to a heart rate (HR) increase without increased sympathetic tonus. HR changes at rest and at deep breathing (6/min - simulated increase of atrial filling pressure) were measured in patients after heart transplantation. Evaluation of dependency of HR changes on breathing depth was done through a new time series methodology. The data was evaluated through graphs displaying a significant increase in the graph area at deep breathing, when compared with breathing at rest (p<0.01). We presume that an increase in HR corresponds to increased intravascular volume and malfunctioning kidneys.
authors.affiliation: First Internal Cardio-Angiology Clinics, St. Anna Teaching Hospital, Brno, Czech Republic. miroslav.soucek@fnusa.cz
authors.forename: M
authors.initials: M
authors.lastname: Soucek
authors.forename: T
authors.initials: T
authors.lastname: Kára
authors.forename: P
authors.initials: P
authors.lastname: Jurák
authors.forename: J
authors.initials: J
authors.lastname: Halámek
authors.forename: L
authors.initials: L
authors.lastname: Spinarová
authors.forename: J
authors.initials: J
authors.lastname: Meluzín
authors.forename: J
authors.initials: J
authors.lastname: Toman
authors.forename: I
authors.initials: I
authors.lastname: Rihácek
authors.forename: J
authors.initials: J
authors.lastname: Sumbera
authors.forename: P
authors.initials: P
authors.lastname: Frána
mesh_terms: D016275:Atrial Function / Q000502:physiology; D001794:Blood Pressure / Q000502:physiology; D001810:Blood Volume / Q000502:physiology*; D005260:Female; D006339:Heart Rate / Q000502:physiology*; D016027:Heart Transplantation; D006801:Humans; D008297:Male; D012119:Respiration; D012146:Rest