Pressure-Volume Loop Measurement Option for IH-SR and IH-5 Working Heart
Easily allows introduction of a pressure-volume loop catheter directly into the left ventricle via an adapter port and the aorta.
The IH-Series includes a specialized pathway which easily allows introduction of a pressure-volume loop catheter directly into the left ventricle via an adapter port and the aorta.
The pressure-volume loop catheter is connected to MPVS Ultra (Single Segment) Pressure Volume Hardware.
Options
*All options also require the PowerLab Data Acquisition System.
Choosing the Right PV Catheter for IH-5 PVL Measurement
Larger hearts often require multi-segment catheters for accurate volume measurement. The minimum size of these catheters is 3 Fr. The IH-5 system can accommodate catheters up to 2 Fr via the dedicated access path; however, for larger hearts it is recommended to instead use the apical puncture method. Since the larger pressure volume catheters have multiple conductance electrodes arrayed at regular intervals, they require the use of the MPVS Multi-Segment Pressure Volume Control Unit. Additionally, due to the variance in the sizes of the left ventricles of larger hearts, the catheters are not pre-packaged with the hardware and the software, and need to be purchased separately.
Choosing the correct PV Catheter requires the knowledge of ventricle size of the rat, guinea pig, or rabbit heart with which you are working. Remove the heart from a typical subject (or from the largest and smallest subjects if you are using a range) you will likely be using for experiments. Cut the heart longitudinally from the aortic valve to the apex of the left ventricle and measure the distance between these two points. Once you know this distance, you will be able to choose the appropriate PV catheter from the options below. Please contact our technical team for assistance to ensure you are choosing the correct catheter.
Pressure-Volume Catheters
| Item # | Description |
| 72-9750 | 2 Fr; Single Field; Electrodes: 6; Spacing: 3.0 mm;Total Length 12.5 cm |
| 72-9751 | 2 Fr; Single Field; Electrodes: 8; Spacing: 3.0 mm;Total Length 12.5 cm |
| 72-9752 | 3 Fr; Single Field; Electrodes: 10; Spacing: 3.0 mm;Total Length 105 cm |
| 72-9753 | 3 Fr; Single Field; Electrodes: 10; Spacing: 4.5 mm;Total Length 105 cm |
| 72-9962 | 3 Fr; Single Field; Electrodes: 10; Spacing: 4.0 mm;Total Length 105 cm |
| 72-9754 | 3 Fr; Dual Field; Electrodes: 10; Spacing: 2.5 mm;Total Length 120 cm |
| Specifications | 72-9738 | 72-9740 | 72-9745 |
|---|---|---|---|
| Animal | Mouse | Mouse | Rat |
| Catheter Material | Polyimide | Polyimide | Polyimide |
| Electrode Connector Type | Redel | Redel | Redel |
| Electrode Spacing | 4.5 mm | 3 mm | 6 mm |
| Electrodes | 4 | 4 | 4 |
| Field Configuration | Single | Single | Single |
| Length | – | 4.5 cm | 15 cm |
| Main Size | 0.8F | 0.8F | 1.1F |
| Model | SPR-839 | PVR-1030 | SPR-869 |
| Number of Sensors | 1 | 1 | 1 |
| Pressure Sensor Connector Type | Low Profile | Low Profile | Low Profile |
| Sensor Location From Tip | Centered in electrode segment | Centered in electrode segment | Centered in electrode segment |
| Sensor Type | 1.4F | 1F | 2F |
| Specifics | Non-Repairable | Non-Repairable | – |
| Tip Type | Straight | Straight | Straight |