Evaluation of Retrobulbar Arterial Blood Flow Changes in Chronic Obstructive Pulmonary Disease by Color Doppler Ultrasonography

CHEST Journal ◽  
2012 ◽  
Vol 142 (4) ◽  
pp. 715A
Author(s):  
Hamdy Mahmoud ◽  
Hoda Makhlouf
Keyword(s):  
Chronic Obstructive Pulmonary Disease ◽  
Blood Flow ◽  
Doppler Ultrasonography ◽  
Color Doppler ◽  
Color Doppler Ultrasonography ◽  
Arterial Blood Flow ◽  
Chronic Obstructive ◽  
Obstructive Pulmonary Disease ◽  
Arterial Blood ◽  
Flow Changes

Color Doppler evaluation of the ocular arterial flow changes in chronic obstructive pulmonary disease

2006 ◽  
Vol 57 (1) ◽  
pp. 63-68 ◽  
Author(s):  
Tulay Ozer ◽  
Remzi Altin ◽  
Suat Hayri Ugurbas ◽  
Yetkin Ozer ◽  
Kamran Mahmutyazicioglu ◽  
...  
Keyword(s):  
Chronic Obstructive Pulmonary Disease ◽  
Pulmonary Disease ◽  
Color Doppler ◽  
Arterial Flow ◽  
Chronic Obstructive ◽  
Obstructive Pulmonary Disease ◽  
Flow Changes ◽  
Doppler Evaluation

scholarly journals Evaluation of Alterations in Uterine Blood Flow using Doppler Ultrasonography in Pregnant, Genotyped Beef Cows and Heifers Consuming Endophyte-Infected Tall Fescue Seeds and Supplemented with Rumen-Protected Niacin

2021 ◽  
Vol 6 (1) ◽  
pp. 1-8
Author(s):  
Sonia J Moisá
Keyword(s):  
Blood Flow ◽  
Tall Fescue ◽  
Doppler Ultrasonography ◽  
Color Doppler ◽  
Beef Cows ◽  
Arterial Blood Flow ◽  
Economic Losses ◽  
Uterine Blood Flow ◽  
Positive Effects ◽  
Arterial Blood

Fescue toxicity is a nutritional-related disease generated in a forage-based beef herd exposed to ergot alkaloids (i.e. ergovaline) present in endophyte-infected tall fescue that produces important economic losses. The combination of a genetic test for susceptibility to fescue toxicity and supplementation with rumen-protected niacin could potentially reduce the toxic effects of ergovaline on beef cow and heifers’ reproductive performance during mid-gestation by improving uterine blood flow. Our main objective was to use color Doppler ultrasonography to evaluate the occurrence of any alteration in uterine arterial blood flow in pregnant, genotyped beef cows and heifers exposed to endophyte-infected tall fescue seeds and supplemented with rumen-protected niacin. We hypothesize that genetically-tested susceptible control beef cows will have narrower uterine arteries and decrease blood flow as compared to tolerant cows that received rumen-protected niacin. Rumen-protected niacin was selected for this study due to its well-known effect as a vasodilator. Therefore, it might help cope with blood vessel constriction generated by ergovaline present in endophyte-infected tall fescue seeds. Results showed the negative effect of exposure to ergovaline in the uterine blood flow of pregnant beef cattle through an increase in the resistivity index. No Doppler parameters detected positive effects of genetic and nutritional treatments.

scholarly journals Efficacy of the Resistive Index of Color Doppler Ultrasonography in Differential Diagnosis of Benign and Malignant Hepatic Space Occupying Lesions

2017 ◽  
Vol 6 (1) ◽  
pp. 27-30
Author(s):  
Farhana Shimu ◽  
Enayet Karim ◽  
Abul Hashem Khan ◽  
Akhter Ahmed ◽  
Sultana Parvin ◽  
...  
Keyword(s):  
Blood Flow ◽  
Differential Diagnosis ◽  
Doppler Ultrasonography ◽  
Malignant Tumors ◽  
Color Doppler ◽  
Resistive Index ◽  
Color Doppler Ultrasonography ◽  
Arterial Flow ◽  
Arterial Blood Flow ◽  
Doppler Spectrum

Background: Write the background in 1 to 2 sentences.Objective: The purpose of the present study was to estimate the efficacy of resistive index (RI) of color Doppler ultrasonography in different space occupying liver lesions.Methodology: This cross sectional study was conducted at in Bangabandhu Sheik Mujib Medical University (BSMMU), Dhaka from July 2010 to December 2012. All the patients presented with the suspicion of hepatic space occupying lesions were enrolled for this study who were later diagnosed clinically or ultrasonographically. This patients were also examined by color Doppler flow imaging. All patients were examined by gray scale ltrasonography, color Doppler and FNAC. To visualize the blood flow, standard color Doppler sonography is used for each lesion. Within the lesions, pulsed Doppler samples are assessed whenever possible on the basis of pulsatile flow. At least three measurements of resistive index (RI) of intra tumoral and peritumoral arterial blood flow would be the last mean value.Results: The detection rate of arterial flow in primary malignant tumors was 94.4% and 87.7% in hepatic metastasis. Doppler spectrum analysis showed the resistance index in primary malignant tumor was 0.75±0.12, 0.73±0.09 in metastatic tumor and was below 0.6 in benign lesions. The difference was significant (p<0.001). This difference was related with its histopathologic structure. The arterial flow with RI >0.6 in CDFI within the liver lesion can be regarded as a criterion of malignant tumors, RI <0.6 can be regarded as benign lesions.Conclusion: RI is more helpful in differential diagnosis of benign and malignant lever lesions.J Shaheed Suhrawardy Med Coll, June 2014, Vol.6(1); 27-30

The Effect of Aminophylline on Cerebral Blood Flow in Patients with Chronic Obstructive Pulmonary Disease

CHEST Journal ◽  
1987 ◽  
Vol 91 (6) ◽  
pp. 874-877 ◽  
Author(s):  
David L. Bowton ◽  
Peter T. Alford ◽  
Byron D. McLees ◽  
Donald S. Prough ◽  
David A. Stump
Keyword(s):  
Chronic Obstructive Pulmonary Disease ◽  
Blood Flow ◽  
Cerebral Blood Flow ◽  
Pulmonary Disease ◽  
Chronic Obstructive ◽  
Obstructive Pulmonary Disease
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