scholarly journals A Doppler ultrasonographic study of cyclic changes of ovarian perfusion in the Beagle bitch

Reproduction ◽  
2001 ◽  
pp. 453-461 ◽  
Author(s):  
K Koster ◽  
C Poulsen Nautrup ◽  
AR Gunzel-Apel
Keyword(s):  
Blood Flow ◽  
Luteal Phase ◽  
Doppler Ultrasonography ◽  
Resistance Index ◽  
Arterial Blood Flow ◽  
Pulsed Doppler ◽  
Arterial Blood ◽  
Pulsed Doppler Ultrasonography ◽  
Diastolic Velocity ◽  
Cyclic Changes

Changes in intraovarian arterial blood flow were monitored by means of colour-coded and pulsed Doppler ultrasonography in Beagle bitches during the normal oestrous cycle (n = 11) and pregnancy (n = 3), and at PGF(2alpha)-induced luteolysis (n = 4). The ultrasonographic findings were related to the reproductive stage of the bitch, as determined by vaginoscopical and cytological criteria, and by the concentrations of oestradiol, LH and progesterone in peripheral blood plasma. Colour-coded Doppler ultrasonography was used to visualize and estimate intraovarian vascularization, and pulsed Doppler ultrasonography was used to measure the arterial blood flow. The systolic and diastolic peak velocities, the end-diastolic velocity, and the pulsatility index and resistance index were calculated for quantitative analysis of the Doppler waveforms. Intraovarian perfusion increased gradually during pro-oestrus. A marked enhancement of intraovarian colouring and blood flow velocities, and a decline in the indices for pulsatility and resistance were observed in the preovulatory period. Maximum perfusion was observed at ovulation and during the early luteal phase. Significant differences (P < 0.05) were detected for the values of all calculated Doppler parameters 2 days before and 2 days after ovulation. Intraovarian blood flow decreased gradually in accordance with luteal regression. Treatment with PGF(2alpha) caused a distinct decline in luteal activity and a concomitant reduction in intraovarian perfusion. The values of blood flow parameters found during the luteal phase of pregnant bitches were comparable to those of the normocyclic bitches. Doppler ultrasonography of the intraovarian arteries in bitches provides complementary information about cyclic changes of ovarian function.

scholarly journals Type A botulinum toxin (disport) in treatment of chronic forms of primary headache

2008 ◽  
Vol 7 (5-1) ◽  
pp. 270-275
Author(s):  
M. V. Napriyenko ◽  
V. Yu. Oknin ◽  
A. G. Sazonova ◽  
L. M. Kudayeva
Keyword(s):  
Blood Flow ◽  
Cerebral Blood Flow ◽  
Botulinum Toxin ◽  
Pilot Study ◽  
Doppler Ultrasonography ◽  
Primary Headache ◽  
Arterial Blood Flow ◽  
Venous Outflow ◽  
Arterial Blood ◽  
Daily Headache

The aim of this investigation is to study the effect of BTA on the cerebral blood flow in patients with chronic daily headache. The analysis of Doppler ultrasonography and transcranial Dopplergraphy findings has shown the following: after the treatment 34% of the patients had no extravasal effect and in 66% of the patients it became moderate and after the treatment normal venous outflow was found in 58% of the patients . The results of the pilot study demonstrate the effect of BT-A injection on the cerebral blood flow by means of optimizing both the arterial blood flow and the venous outflow from the cavity of the skull.

Range-gated pulsed Doppler ultrasonographic evaluation of carotid arterial blood flow in small preterm infants with patent ductus arteriosus

1983 ◽  
Vol 102 (2) ◽  
pp. 294-298 ◽  
Author(s):  
W. Dean Wilcox ◽  
Timothy A. Carrigan ◽  
Kenneth J. Dooley ◽  
Don P. Giddens ◽  
Francine D. Dykes ◽  
...  
Keyword(s):  
Blood Flow ◽  
Patent Ductus Arteriosus ◽  
Preterm Infants ◽  
Ductus Arteriosus ◽  
Arterial Blood Flow ◽  
Pulsed Doppler ◽  
Arterial Blood ◽  
Carotid Arterial ◽  
Patent Ductus

Comparison of plethysmographic methods with pulsed Doppler blood flowmetry

1979 ◽  
Vol 236 (6) ◽  
pp. H899-H903 ◽  
Author(s):  
B. I. Levy ◽  
W. R. Valladares ◽  
A. Ghaem ◽  
J. P. Martineaud
Keyword(s):  
Blood Flow ◽  
Strain Gauge ◽  
Venous Occlusion ◽  
Arterial Blood Flow ◽  
Pulsed Doppler ◽  
Local Cooling ◽  
Doppler Flowmetry ◽  
Strain Gauge Plethysmography ◽  
Arterial Blood ◽  
Local Warming

Hand blood flow was measured at rest, with local warming, and with local cooling. Three methods were simultaneously used: water plethysmography (WP), mercury-in-rubber strain gauge plethysmography (SG), and pulsed Doppler flowmetry (D). Of these, water plethysmography is the most sensitive and accurate; strain gauge plethysmography is simpler but less accurate; and pulsed Doppler flowmetry precisely measures instantaneous arterial blood flow without venous occlusion.

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