Avtor/Urednik		Kamenik, Mirt
Naslov		Vrednost impedančne pletizmografije kot metode za preučevanje sprememb minutnega volumna srca ob fiziološkem dražljaju
Prevedeni naslov		The value of impedance pletizmography as a method of investigation of cardiac output alterations following physiologic stimulus
Tip		članek
Vir		Zdrav Vestn
Vol. in št.		Letnik 67, št. 2
Leto izdaje		1998
Obseg		str. 57-60
Jezik		slo
Abstrakt		Background. The aim of the study was to evaluate to what extent the method of impedance pletizmography is adequate for the registration of transitional states of the cardiovascular system when a physiologic stimulus destroys the balance within the system. Methods. In 8 volunteers cardiac output (CO), heart rate (HR) and stroke volume (SV) was measured continuously for 9 min, by the method of impedance pletizmography - 5 min. lying down, 2 min. sitting and 2 min. standing. The transition from the lying to the sitting position and from the sitting to the standing position was registered continuously. Results. On the average, the transition from the lying to the sitting position causes a 26% decrease in CO (P<0.001), the HR increaces by 10% (P<0.001) and the SV decreases by 32% (P<0.001). In the transition from the sitting to the standing position CO remains unchanged, the HR increases by 13% (P = 0.008) and the SV decreases by 7% (P<0.001). Conclusions. Impedance pletizmography is a suitable method for continuous registration of transitional states of the cardiovascular system.
Izvleček		Izhodišča. Namen raziskave je bil oceniti, ali je impedančna pletizmogragija primerna metoda za zapisovanje prehodnih stanj obtočil ob porušenju ravnovesja v sistemu s fiziološkim dražljajem. Metode. 8 prostovoljcem smo 9 minut neprekinjeno merili minutni volumen srca (MV), frekvenco srca (FR) in utripni volumen srca (UV) z metodo impedančne pletizmografije, in sicer 5 minut leže, 2 minuti sede in 2 minuti stoje. Prehod iz ležečega položaja v sedeči in iz sedečega v stoječi smo zapisovali neprekinjeno. Rezultati. Pri prehodu iz ležečega v sedeči položaj pride v povprečju do 26% zmanjšanju MV (p<0,001), FR se poveča za 10% (p<0,001), UV se zmanjša za 32% (p<0,001). Pri prehodu iz sedečega v stoječi položaj ostane MV nespremenjen, FR se poveča za 13% (P =0,008) in UV se zmanjša za 7% (P<0,001). Zaključki. Impedančna pletizmografija je primerna metoda za neprekinjeno zapisovanje prehodnih stanj obtočil.
Deskriptorji		HEART FUNCTION TESTS CARDIOGRAPHY, IMPEDANCE STROKE VOLUME CARDIAC OUTPUT HEART RATE ADULT