SHORT COMMUNICATION
Heart Rate and Increased Intravascular Volume
M. SOUČEK, T. KÁRA, P. JURÁK1, J. HALÁMEK1,
L. ŠPINAROVÁ, J. MELUZÍN, J. TOMAN, I. ŘIHÁČEK, J. ŠUMBERA,
P. FRÁŇA
First Internal Cardio-Angiology Clinics, St. Anna Teaching
Hospital, and 1Institute of Scientific Instruments,
Academy of Sciences of the Czech Republic, Brno, Czech
Republic
Received
December 10, 2001
Accepted May 22, 2002
Summary
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.
Key
words
Kidneys • Heart rate • Atrial mechanisms • Intravascular
volume • Breathing
Reprint
requests
Miroslav Souček, M.D., Ph.D. First Internal Cardio-Angiology
Clinics, St. Anna Teaching Hospital, Pekařská 53, 656 91 Brno,
Czech Republic. E-mail:
miroslav.soucek@fnusa.cz
|
