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Pulsatility Index quantification in the human precapillary arterioles of the eye
Microvascular Research, 2016The Pulsatility Index (PI) was quantified for the first time in the human conjunctival pre-capillary arterioles in vivo. In 30 arterioles with diameters ranging between 6 and 12μm, from 15 healthy humans, peak to peak velocity ranged from 0.2 up to 4.8mm/s with a mean value equal to 1.4±0.2 (SE) mm/s.
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Hemodynamic imaging with pulsatility-index and resistive-index color Doppler US.
Radiology, 1997Pulsatility index and resistive index were mapped with color Doppler ultrasound (US) and compared with spectral Doppler US findings. In the carotid arteries and/or kidneys in 12 healthy subjects, the pulsatility index and resistive index were estimated from mean frequency shifts and mapped into "cool-warm" or "rainbow" color scales.
G S, Lin, R S, Spratt
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The relationship between aortoiliac hemodynamics and femoral pulsatility index
Journal of Surgical Research, 1982Abstract The relationship between systolic pressure and Doppler ultrasonic velocity waveform characteristics, both monitored at the common femoral artery, was investigated in 35 limbs of patients with arterial occlusive disease of varying severity and location.
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Pulmonary Artery Pulsatility Index (PAPi)
Evidence to Action: Official Journal of MDCalcThe Pulmonary Artery Pulsatility Index (PAPi) is an invasive hemodynamic measure used to assess right ventricular (RV) function and predict adverse cardiovascular outcomes. PAPi is calculated as pulmonary artery pulse pressure divided by right atrial pressure and reflects RV contractility, RV preload, and RV afterload.
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Pulmonary Arterial Pulsatility Index in Portopulmonary Hypertension
American Journal of Respiratory and Critical Care MedicineAbstract Rationale Pulmonary artery pulsatility index (PAPi) is defined as pulmonary artery pulse pressure divided by right atrial pressure and has been identified as a predictor of mortality in pulmonary hypertension. Portopulmonary-hypertension (POPH), a subset associated with portal hypertension, lacks a clear prognostic ...
S. Ghosh +4 more
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Resistance versus pulsatility index
Journal of Ultrasound in Medicine, 1993A, Kurjak, M, Predanic, H, Shalan
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[Mean velocity and pulsatile index in primary headaches].
Revista de neurologia, 2002Several authors have used transcranial Doppler studies (DTC) in the study of changes occurring in migraine. They found an increase in mean velocity (VM) as compared with controls. However there are few studies of this in tension headache.To determine possible differences in VM and pulsatility index (IP) between patients with migraine and those with ...
A, Arjona +2 more
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