• numerical
  • Both the trend of split varying with respect to respiratory phase and the numerical range of split varying are comparable to the results disclosed by previous physiologists. (mdpi.com)
  • heart sound
  • The system comprises an implantable heart sound sensor operable to produce an electrical signal representative of at least one heart sound, a heart sound sensor interface circuit coupled to the heart sound sensor to produce a heart sound signal, an implantable posture. (google.com.au)
  • The controller circuit is operable to measure at least one heart sound in correspondence with at least one sensed patient posture. (google.com.au)
  • 2. The system of claim 1 , wherein the controller is configured to determine the patient is in an upright posture and to measure the heart sound when the controller determines the patient is in the upright posture. (google.com.au)
  • 8. The system of claim 1 , wherein the device further includes at least one implantable cardiac signal sensing circuit operable to detect at least one intrinsic cardiac signal, and wherein the controller is operable to measure the at least one heart sound in correspondence with at least one determined patient posture when a patient heart rate is below a specified heart rate threshold value. (google.com.au)
  • 9. The system of claim 1 , wherein the device further includes an implantable activity sensor and the controller is operable to measure the at least one heart sound in correspondence with at least one sensed patient posture when a patient activity level is below a specified activity threshold value. (google.com.au)