Figure 1.
Components of the telemetry system (A) including the transceiver, the telemeter body, the battery, the Doppler flow probes, and the pressure and ECG sensors.
The telemetry system uses detachable connectors for easy replacement of the battery and sensors if necessary. Illustration of the animal monitoring using the telemetry system and a schematic representation of the three heart failure models (B).
Table 1.
A summary of the specifications for the EndoGear1 system.
Figure 2.
Baseline tracings of a representative pacing-induced tachycardia animal before the pacemaker was activated (A).
Representative tracings when the animal was paced at 190 bpm (B).
Figure 3.
Representative tracings of telemetric recordings in an animal with volume overload - A-V fistula (A).
Representative tracings of telemetric recordings in an animal with pressure overload - aortic banding (B).
Figure 4.
Measurements of A) left ventricular end-systolic pressure (LVESP), B) left ventricular end-diastolic pressure (LVEDP), and C) mean aortic pressure in animals with volume overload, pressure overload and dilated cardiomyopathy.
All measurements are relative to baseline.
Figure 5.
Blood flow velocity measurements in A) the left anterior descending (LAD) artery and B) the brachiocephalic artery in animals with volume overload (A-V fistula).
Velocity measurements in C) the LAD artery and D) the brachiocephalic artery in animals with pressure overload (aortic banding).
Figure 6.
Representative tracings of telemetric recordings in a pacing-induced tachycardia animal (A) where an abrupt and transitory change (arrows) is observed in all cardiac parameters.
A magnification of the tracings (B).