SA Instruments has expanded our product line to include MR-compatible non-invasive blood pressure, pulse oximetry and capnography for animals larger than rodents with heart rates less than 300 beats per minute. These new monitoring modules are available for use with all existing Model 1025 and Model 1030 Monitoring and Gating Systems.
We decided to make these options available for larger animals after Sultan the dog became ill with lung cancer. Sultan had been a member of our team for 12 years. He was a favorite with all the employees. He had a terrific nose and could locate food in any desk drawer.
Sultan was ill for more than 5 months. During his illness we became aware that specialty veterinarians with MR scanners had a need for improved and less expensive physiological monitoring and gating equipment. Thanks to Sultan that equipment is now available for medical research with larger animals.
Non-Invasive Blood Pressure – The oscillometric method of blood pressure measurement monitors the amplitude of cuff pressure changes during cuff deflation. The cuff pressure is first elevated above the patient’s systolic blood pressure level and the cuff is deflated at a certain rate. Systolic, mean arterial (MAP) and diastolic blood pressures can be accurately obtained by measuring the pressure fluctuation while controlling the cuff deflation rate.
Pulse Oximetry – Pulse Oximetry provides noninvasive monitoring of heart rate and arterial blood oxygen saturation. Fiber optic oximetry sensors are used to transmit pulses of red and infrared light through the animal’s peripheral vascular region. Oxygen saturation is determined by measuring the differential absorption of the red and infrared light. In addition to oxygen saturation, the module provides the cardiac plethysmogram waveform, generates a plethysmogram gate, measures pulse distension and the animal’s heart rate.
Capnography – Capnography continuously monitors carbon dioxide (CO2) concentration in respiratory gases. The CO2 waveform is analyzed to determine respiration rate, end-tidal CO2, inspired CO2, inspiration and expiration times. CO2 monitoring may be the single most important vital signs parameter for sedated animals. It can give a warning that the patient is in trouble within just a few breaths.
Specifications and additional details on these MR-compatible optional modules for larger animals are contained in the brochure below.