Application of a Continuous Ventricular Function Monitor with ...
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Application of a Continuous Ventricular Function Monitor with ...
CdTe Ventricular Function Monitor ââ¬Â¢Taki et al. 441. Application of a Continuous Ventricular. Function Monitor with Miniature Cadmium. Telluride Detector to ...
Application of a Continuous Ventricular Function Monitor with Miniature Cadmium Telluride Detector to Patients with Coronary Artery Bypass Grafting Junichi Taki, Akira Muramon, Kenichi Nakajima, Hisashi Bunko, Michio Kawasuji, Norihisa Tonami, and Kinichi Hisada
Departments ofNuclear Medicine and Surgery (I), Kanazawa UniversitySchool ofMedicine, Kanazawa, Japan tory ventricular function monitor (the VEST) was intro
A continuous ventricular function monitor witha miniatureduced and continuous assessment of cardiac function change during short intervals became feasible (1—6).Its detector consists of a sodium iodide crystal 6.5 cm in tion (EF)at rest and changein EF from rest to exerciseand diameter with a highly sensitive parallel-hole collimator postexercise(Y)measured with the devicecorrelatedwfth weighing 0.75 kg (3, 4). Several types of small detectors that of the gamma camera (X)(Y= O.86x + 6.8(%), r = 0.87, have also been distributed for continuous monitoring of n= 110,p< 0.001,andV = 0.96x+ 0.4(%),r = 0.90,n = ventricular function (7-10). When a cadmium telluride cadmium tellunde detector was evaluated and applied to patients with coronary bypass surgery (CABG). Ejection frac
37, p < 0.001respectively). Leftventricular function during (CdTe) detector is used, its small size and light weight and after supine ergometer exercise was monitored in 54 pa@entsbefore and after CABG. The EF change from baseline to peak exercise improved from —5.9%±8.9% before CABG to 7.2% ±7.9% after CABG (p < 0.001). In all patients but
should be beneficial for ambulatory ventricular function monitoring. We evaluated a continuous ventricular func
tion monitor
(CVM) with a lightweight
miniature
cad
two,a rapidEFincrease justafterexerciseoverbaselineEF mium telluride detector and applied it to the severe coro was observed.ThisEF “overshoot― dunngrecoveryincreased nary artery disease patients
from 11.5%±6.5%to 16.4%±6.0%(p < 0.001)after CABG.Thetimefromthecessation ofexercise to EFover
artery bypass grafting (CABG).
shoot decreased from 153 ±80 sec to 76 ±49 sec (p
