Heart rate and increased intravascular volume.
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.
Soucek
M
M
First Internal Cardio-Angiology Clinics, St. Anna Teaching Hospital, Brno, Czech Republic. miroslav.soucek@fnusa.cz
Kára
T
T
Jurák
P
P
Halámek
J
J
Spinarová
L
L
Meluzín
J
J
Toman
J
J
Rihácek
I
I
Sumbera
J
J
Frána
P
P
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