TY  - JOUR
T1  - AV Interval and Cardiac Output in Patients with Implanted DDD Pacemaker
AU - , Fariborz Akbarzadeh AU - , Mehrnoush Toufan AU - , Nasrin Afsarpour 
JO  - Research Journal of Biological Sciences
VL  - 3
IS  - 12
SP  - 1381
EP  - 1386
PY  - 2008
DA  - 2001/08/19
SN  - 1815-8846
DO  - rjbsci.2008.1381.1386
UR  - https://makhillpublications.co/view-article.php?doi=rjbsci.2008.1381.1386
KW  - Atrioventricular delay
KW  -cardiac output
KW  -DDD pacemaker
AB  - Our aim was to compare the Cardiac Output (CO), Filling Time (FT) and Myocardial Performance Index (MPI) derived optimal atrioventricular delay (AVD) and to analyze systolic and diastolic performance at every optimal AVD. We studied 32 patients with implanted DDD pacemaker, from implantation time to 6 months following PM implantation, in Tabriz Shahid Madani Heart Center. The evaluation was performed during AV sequential pacing with different programmed AVDS ranged from 100-200 ms by steps of 20-30 ms. At every AVD, the following parameters were measured: FT, mitral VTI, ET, aortic VTI, ICT and IRT. CO and FT derived optimal AVDs were significantly different (146±37 and 126±35 ms, respectively), but their difference with MPI derived optimal AVDs was not significant (130±28 ms). ICT/ET was similar at CO, FT and MPI derived optimal AVD (0.24±0.10, 0.22±0.05 and 0.20±0.07, respectively). IRT/ET ratio was similar at CO, FT and MPI derived optimal AVDs (0.46±0.14, 0.45±0.10 and 0.42±0.10, respectively).
ER  -