OBJECTIVES: The aim of these studies was to assess repeatability of large (C1) and small (C2) arterial elasticity indices over various time intervals using the HDI/Pulsewave CR-2000 Research CardioVascular Profiling System (Hypertension Diagnostics, Inc., Eagan, Minnesota, USA). Non-invasive hemodynamic parameters using this device were compared to invasive measurements. METHODS: After a 5-min period of rest, 31 healthy hospital employees underwent cardiovascular profiling on two occasions within 1 h apart. Another 59 healthy hospital employees underwent cardiovascular profiling on two occasions, an average 52 days apart. An additional group of 23 patients underwent right and left heart catheterizations for routine clinical indications and hemodynamic assessment was performed invasively and non-invasively. RESULTS: For short-term repeatability, the mean difference of C1 was +0.25 +/- 2.83 ml/mmHg x 10 (P = NS) and C2 was -0.14 +/- 1.86 ml/mmHg x 100 (P = NS). For intermediate test repeatability, the mean difference of C1 was -0.415 +/- 2.97 ml/mmHg x 10 (P = NS) and C2 was -0.19 +/- 2.67 ml/mmHg x 100 (P = NS). In the invasive protocol, both aortic diastolic blood pressure (-4.74 +/- 9.7 mmHg) and systemic vascular resistance (-194 +/- 264 dyne x s x cm(-5)) were significantly lower invasively. CONCLUSIONS: Measurements with the HDI/Pulsewave CR-2000 Research CardioVascular Profiling System are repeatable over both a short and intermediate period of observation. Furthermore, non-invasive hemodynamic parameters reasonably agree with invasive measurements. Copyright 2002 Lippincott Williams & Wilkins
OBJECTIVES: The aim of these studies was to assess repeatability of large (C1) and small (C2) arterial elasticity indices over various time intervals using the HDI/Pulsewave CR-2000 Research CardioVascular Profiling System (Hypertension Diagnostics, Inc., Eagan, Minnesota, USA). Non-invasive hemodynamic parameters using this device were compared to invasive measurements. METHODS: After a 5-min period of rest, 31 healthy hospital employees underwent cardiovascular profiling on two occasions within 1 h apart. Another 59 healthy hospital employees underwent cardiovascular profiling on two occasions, an average 52 days apart. An additional group of 23 patients underwent right and left heart catheterizations for routine clinical indications and hemodynamic assessment was performed invasively and non-invasively. RESULTS: For short-term repeatability, the mean difference of C1 was +0.25 +/- 2.83 ml/mmHg x 10 (P = NS) and C2 was -0.14 +/- 1.86 ml/mmHg x 100 (P = NS). For intermediate test repeatability, the mean difference of C1 was -0.415 +/- 2.97 ml/mmHg x 10 (P = NS) and C2 was -0.19 +/- 2.67 ml/mmHg x 100 (P = NS). In the invasive protocol, both aortic diastolic blood pressure (-4.74 +/- 9.7 mmHg) and systemic vascular resistance (-194 +/- 264 dyne x s x cm(-5)) were significantly lower invasively. CONCLUSIONS: Measurements with the HDI/Pulsewave CR-2000 Research CardioVascular Profiling System are repeatable over both a short and intermediate period of observation. Furthermore, non-invasive hemodynamic parameters reasonably agree with invasive measurements. Copyright 2002 Lippincott Williams & Wilkins
Authors: Alison Mary Coates; Samantha Morgillo; Catherine Yandell; Andrew Scholey; Jonathan David Buckley; Kathryn Ann Dyer; Alison Marie Hill Journal: Nutrients Date: 2020-04-23 Impact factor: 5.717