Pulse detection with a single accelerometer placed at the carotid artery: Performance in a real-life diagnostic test during acute hypotension
| Autor: | Rene Martinus Maria Derkx, Christiane Peiker, Vincent Alexander Rudolf Aarts, Christian Meyer, Jens Muehlsteff, Kiran Dellimore |
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| Rok vydání: | 2016 |
| Předmět: |
medicine.medical_specialty
medicine.diagnostic_test Pulse (signal processing) business.industry Diagnostic Tests Routine Carotid arteries Ranging Accelerometer Signal Palpation Tilt table test Carotid Arteries Heart Rate Tilt-Table Test Internal medicine Heart rate Accelerometry medicine Cardiology Humans Hypotension business Biomedical engineering |
| Zdroj: | EMBC |
| ISSN: | 2694-0604 |
| Popis: | Pulse detection via palpation is a basic and essential procedure in daily medical practice. We have been investigating the performance of a single accelerometer placed above the carotid artery, which is one of the recommended locations for manual palpation. A low-cost sensor attached by an adhesive measures accelerations due to carotid dilatations and whole body vibrations. A real-time demonstrator has been developed to classify 10 second- windows in “Pulse”, “Motion” and “No Pulse” and to infer pulse rate. Data were obtained during a scheduled head-up tilt table test (HUTT). Our results show for a subgroup of 10 patients with acute hypotension a wide spread of “good” signal coverage ranging from as low as 37% up to 100%. Key factors compromising the performance in HUTT are motion artifacts, arrhythmias, sensor placement and sensor-skin coupling. In conclusion, pulse detection with a single accelerometer is sufficiently accurate, if good signal coverage can be achieved. |
| Databáze: | OpenAIRE |
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