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Femoral artery blood flow

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https://www.readbyqxmd.com/read/28109110/-effects-of-polyethylene-oxide-on-blood-perfusion-in-the-hind-limbs-of-rats-with-chronic-hindlimb-ischemia
#1
De-Zhong Zheng, Tao Zhou, Dao-Gang Zha
OBJECTIVE: To evaluate the effects of polyethylene oxide (PEO) on blood perfusion in hind limb skeletal muscles in a rat model of chronic hind limb ischemia. METHDOS: Twelve rat models of chronic hind limb ischemia established by unilateral femoral artery ligation were randomized into PEO and control groups (n=6) and treated with intravenous infusion of PEO and saline through the internal jugular vein every other day for 2 weeks. Contrast-enhanced ultrasonography was performed after the treatments to evaluate the blood flow in the skeletal muscles at different time points and blood flow reserve in the ischemic hind limbs on day 28...
January 20, 2017: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/28100130/influence-of-cold-water-immersion-on-limb-blood-flow-after-resistance-exercise
#2
Chris Mawhinney, Helen Jones, David A Low, Daniel J Green, Glyn Howatson, Warren Gregson
This study determined the influence of cold (8°C) and cool (22°C) water immersion on lower limb and cutaneous blood flow following resistance exercise. Twelve males completed 4 sets of 10-repetition maximum squat exercise and were then immersed, semi-reclined, into 8°C or 22°C water for 10-min, or rested in a seated position (control) in a randomized order on different days. Rectal and thigh skin temperature, muscle temperature, thigh and calf skin blood flow and superficial femoral artery blood flow were measured before and after immersion...
January 19, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28074808/demonstration-of-blood-flow-by-color-doppler-in-the-femoral-artery-distal-to-arterial-cannula-during-peripheral-venoarterial-extracorporeal-membrane-oxygenation
#3
K G Suresh Rao, T Muralikrishna, K R Balakrishnan
In spite of distal perfusion of the limb using a cannula, the limb can have ischemic events if there is an undetected kink or clot anywhere in the line or thrombus in the artery. There are several ways to monitor and assess the limb ischemia. Monitoring for clinical signs of limb ischemia like temperature change and pallor is reliable and mandatory. We report a method where we used color Doppler to document the blood flow. Curvilinear vascular probe of an echo machine is used to identify the flow in the distal femoral artery of the lower limb...
January 2017: Annals of Cardiac Anaesthesia
https://www.readbyqxmd.com/read/28054454/epoetin-beta-pegol-ameliorates-flow-mediated-dilation-with-improving-enos-coupling-state-in-non-obese-diabetic-rats
#4
Kenichi Serizawa, Kenji Yogo, Yoshihito Tashiro, Ryohei Kawasaki, Koichi Endo, Yasushi Shimonaka, Michinori Hirata
BACKGROUND/AIMS: Patients with diabetic nephropathy have a high cardiovascular mortality. Epoetin beta pegol (continuous erythropoietin receptor activator, C.E.R.A.) is a drug for the treatment of renal anemia. In this study, we investigated the effect of C.E.R.A. on vascular endothelial function as evaluated by flow-mediated dilation (FMD) and the relationship between hematopoiesis and FMD in diabetic nephropathy rats. METHODS: Male Spontaneously Diabetic Torii rats (SDT, 22 weeks old) were used...
January 5, 2017: Cardiovascular Therapeutics
https://www.readbyqxmd.com/read/28046185/technical-note-measurement-of-mammary-plasma-flow-in-sows-by-downstream-dilution-of-mammary-vein-infused-aminohippuric-acid
#5
U Krogh, A C Storm, P K Theil
The objectives of the present study were to design a method to estimate mammary plasma flow (MPF) in lactating sows using downstream dilution of -aminohippuric acid (AH) and to compare these estimates with MPF estimates based on specific AA as internal markers (MPF-AA). A permanent indwelling catheter was surgically implanted in the femoral artery, and another 2 were inserted in the right cranial mammary vein of 8 second- and third-parity sows on d 76 ± 2 SEM of gestation. On the 3rd and 17th days in milk, arterial and venous blood samples were drawn in hourly intervals from 0...
December 2016: Journal of Animal Science
https://www.readbyqxmd.com/read/27998712/impacts-of-femoral-artery-and-vein-excision-versus-femoral-artery-excision-on-the-hindlimb-ischemic-model-in-cd-1-mice
#6
Miao Chen, Huimin Fan, Benjamin T Ledford, Zayd Farah, Catherine Barron, Zhongmin Liu, Jia-Qiang He
BACKGROUND AND AIM: Although femoral artery ligation-induced ischemia is commonly used in C57BL/6 or Balb/c mice, direct comparisons between femoral artery/vein (FAV) versus femoral artery (FA) excisions have not been reported. The goal of the present study is to investigate the effects of FAV versus FA excisions on hindlimb models using adult CD-1 mice. METHODS: Two groups (n=10/group) of adult, mixed gender CD-1 mice were used to generate hindlimb ischemic models by excising either the FAV or FA...
December 18, 2016: Microvascular Research
https://www.readbyqxmd.com/read/27998245/generation-endothelialization-and-microsurgical-suture-anastomosis-of-strong-1-mm-diameter-collagen-tubes
#7
Xuanyue Li, Jing Xu, Calin T Nicolescu, Jordann T Marinelli, Joe Tien
Tissue-engineered vascular grafts that are based on reconstituted extracellular matrices have been plagued by weak mechanical strength that prevents handling or anastomosis to native vessels. In this study, we devise a method for making dense, suturable collagen tubular constructs of diameter ≤1 mm for potential microsurgical applications, by dehydrating tubes of native rat tail type I collagen and crosslinking them with 20 mM genipin. Crosslinked dense collagen tubes with 1 mm inner diameter yielded ultimate tensile strength of 342 ± 15 gF and burst pressure of 1313 ± 156 mm Hg, comparable to the strength of a rat femoral artery, and supported endothelial cell adhesion and growth...
January 13, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/27987329/fetal-alcohol-exposure-alters-blood-flow-and-neurological-responses-to-transient-cerebral-ischemia-in-adult-mice
#8
Shameena Bake, Rachel Gardner, Joseph D Tingling, Rajesh C Miranda, Farida Sohrabji
BACKGROUND: Prenatal alcohol exposure (PAE) can result in physical and neurocognitive deficits that are collectively termed "fetal alcohol spectrum disorders" (FASD). Although FASD is associated with lifelong intellectual disability, the mechanisms mediating the emergence of secondary mental health and physical disabilities are poorly understood. Based on our previous data showing that maternal ethanol (EtOH) exposure in mice resulted in an immediate reduction in cranially directed fetal blood flow, we hypothesized that such exposure would also result in persistent alterations in cranially directed blood flow in the prenatally alcohol-exposed (PAE) adult...
January 2017: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/27965589/m-currents-kv7-2-7-3-kcnq2-kcnq3-are-responsible-for-dysfunctional-autonomic-control-in-hypertensive-rats
#9
Torill Berg
: Autonomic dysfunctions play important roles in hypertension, heart failure and arrhythmia, often with a detrimental and fatal effect. The present study analyzed if these dysfunctions involved M-channels (members of the Kv7/KNCQ family) in spontaneously hypertensive rats (SHR). Cardiac output and heart rate (HR) were recorded by a flow probe on the ascending aorta in anesthetized SHR and normotensive rats (WKY), and blood pressure (BP) by a femoral artery catheter. Total peripheral vascular resistance (TPR) was calculated...
2016: Frontiers in Physiology
https://www.readbyqxmd.com/read/27933442/arterial-pulse-wave-propagation-velocity-in-healthy-dogs-by-pulse-wave-doppler-ultrasound
#10
Rodrigo B Nogueira, Lucas A Pereira, Alice F Basso, Ingrid S da Fonseca, Lorena A Alves
The aim of this study was to prospectively evaluate the carotid-femoral pulse wave velocity (PWV) values in healthy dogs using pulse wave Doppler ultrasound. A secondary aim was to determine the feasibility of this method and to report the intra- and interobserver reproducibilities of the PWV in conscious dogs. The data were studied in 30 healthy, adult, male (n = 15) and female (n = 15) dogs. The time interval marked between the R wave peak of the electrocardiogram and the intersection of the blood flow wave upstroke of the Doppler spectrum with the baseline of zero frequency was determined for the carotid (T1) and for the femoral (T2) arteries...
December 8, 2016: Veterinary Research Communications
https://www.readbyqxmd.com/read/27901396/effects-of-dobutamine-hydrochloride-on-cardiovascular-function-in-horses-anesthetized-with-isoflurane-with-or-without-acepromazine-maleate-premedication
#11
RANDOMIZED CONTROLLED TRIAL
Mara F Schier, Anthea L Raisis, Cristy J Secombe, Giselle Hosgood, Gabrielle C Musk, Guy D Lester
OBJECTIVE To determine the effects of acepromazine maleate premedication on cardiovascular function before and after infusion of dobutamine hydrochloride for 30 minutes in isoflurane-anesthetized horses. ANIMALS 6 healthy adult horses. PROCEDURES Each horse was anesthetized once following premedication with acepromazine (0.02 mg/kg, IV) administered 30 minutes prior to anesthetic induction (ACP+ treatment) and once without premedication (ACP- treatment). Anesthesia was induced with IV administration of xylazine hydrochloride (0...
December 2016: American Journal of Veterinary Research
https://www.readbyqxmd.com/read/27890534/effects-of-arterial-wall-models-and-measurement-uncertainties-on-cardiovascular-model-predictions
#12
V G Eck, J Sturdy, L R Hellevik
We developed a methodology to assess and compare the prediction quality of cardiovascular models for patient-specific simulations calibrated with uncertainty-hampered measurements. The methodology was applied in a one-dimensional blood flow model to estimate the impact of measurement uncertainty in wall model parameters on the predictions of pressure and flow in an arterial network. We assessed the prediction quality of three wall models that have been widely used in one-dimensional blood flow simulations. A 37-artery network, previously used in one experimental and several simulation studies, was adapted to patient-specific conditions with a set of three clinically measurable inputs: carotid-femoral wave speed, mean arterial pressure and area in the brachial artery...
January 4, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/27889934/vascular-cell-transcriptomic-changes-to-exercise-training-differ-directionally-along-and-between-skeletal-muscle-arteriolar-trees
#13
M Harold Laughlin, Hsiao T Yang, Darla L Tharp, R Scott Rector, Jaume Padilla, Douglas K Bowles
EXT-induced arteriolar adaptations in skeletal muscle are heterogeneous because of spatial variations in muscle fiber type composition and fiber recruitment patterns during exercise. The purpose of this report is to summarize a series of experiments conducted to test the hypothesis that changes in vascular gene expression are signaled by alterations in shear stress resulting from increases in blood flow, muscle fiber type composition and fiber recruitment patterns. We also report results from a follow-up study of Ankrd23, one gene whose expression was changed by EXT...
November 27, 2016: Microcirculation: the Official Journal of the Microcirculatory Society, Inc
https://www.readbyqxmd.com/read/27884944/ruptured-abdominal-aortic-aneurysm-after-endovascular-aortic-aneurysm-repair-thrombosis
#14
Jesse Victory, Syed Ali Rizvi, Enrico Ascher, Anil Hingorani
BACKGROUND: Complete thrombosis of an aortic endograft after an endovascular aortic aneurysm repair is a rare complication. The majority of thrombotic events occur in the iliac limbs. CASE PRESENTATION: We present the case of a patient who presented with acute limb ischemia as the result of a thrombosed infra-renal aortic endograft. After restoration of blood flow to the lower extremities with an axillary to bi-femoral artery bypass, the patient was lost to follow-up...
November 24, 2016: Vascular
https://www.readbyqxmd.com/read/27881556/nitrite-and-s-nitrosohemoglobin-exchange-across-the-human-cerebral-and-femoral-circulation-relationship-to-basal-and-exercise-blood-flow-responses-to-hypoxia
#15
Damian M Bailey, Peter Rasmussen, Morten Overgaard, Kevin A Evans, Aske M Bohm, Thomas Seifert, Patrice Brassard, Morten Zaar, Henning B Nielsen, Peter Raven, Niels H Secher
BACKGROUND: -The mechanisms underlying red blood cell (RBC)-mediated hypoxic vasodilation remain controversial with separate roles for nitrite (NO2(-)) and S-nitrosohemoglobin (SNO-Hb) widely contested given their ability to transduce nitric oxide (NO) bioactivity within the microcirculation. To establish their relative contribution in vivo, we quantified arterial-venous (a-v) concentration gradients across the human cerebral and femoral circulation at rest and during exercise, an ideal model system characterized by physiological extremes of O2 tension and blood flow...
November 15, 2016: Circulation
https://www.readbyqxmd.com/read/27881395/diet-induced-weight-loss-improves-not-only-cardiometabolic-risk-markers-but-also-markers-of-vascular-function-a-randomized-controlled-trial-in-abdominally-obese-men
#16
Peter J Joris, Jogchum Plat, Yvo Ham Kusters, Alfons Jhm Houben, Coen DA Stehouwer, Casper G Schalkwijk, Ronald P Mensink
BACKGROUND: Many trials assessing effects of dietary weight loss on vascular function have been performed without no-weight loss control groups and in individuals with obesity-related morbidities. Usually a limited set of vascular function markers has been investigated. OBJECTIVE: The objective of this study was to examine effects of diet-induced weight loss on various vascular function markers and differences between normal-weight and abdominally obese men at baseline and after weight reduction...
November 23, 2016: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/27865711/use-of-an-eptfe-covered-nitinol-self-expanding-stent-graft-for-the-treatment-off-pre-closure-device-failure-during-transcatheter-aortic-valve-replacement
#17
Arie Steinvil, Nelson Bernardo, Toby Rogers, Edward Koifman, Kyle Buchanan, M Chadi Alraies, Christian Shults, Rebecca Torguson, Petros G Okubagzi, Augusto D Pichard, Lowell F Satler, Itsik Ben-Dor, Ron Waksman
OBJECTIVES: Our aim was to describe our experience with the use of an ePTFE-covered nitinol self-expanding stent graft (GORE® VIABAHN® Endoprosthesis, Gore Medical, USA) placed in the common femoral artery for the treatment of suture-mediated pre-closure device failure following transcatheter aortic valve replacement (TAVR). BACKGROUND: Access site-related vascular complications (VC) following sheath removal related to pre-closure device failure during TAVR are common and treatment options may vary...
October 21, 2016: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/27856718/central-and-peripheral-responses-to-static-and-dynamic-stretch-of-skeletal-muscle-mechano-and-metaboreflex-implications
#18
Massimo Venturelli, Emiliano Cè, Eloisa Limonta, Angela Valentina Bisconti, Michela Devoto, Susanna Rampichini, Fabio Esposito
: Passive static stretching (SS), circulatory cuff occlusion (CCO), and the combination of both (SS + CCO) have been used to investigate the mechano- and metaboreflex, respectively. However, the effects of dynamic stretching (DS) alone or in combination with CCO (DS + CCO) on the same reflexes have never been explored. The aim of the study was to compare central and peripheral hemodynamic responses to DS, SS, DS + CCO, and SS + CCO. In 10 participants, femoral blood flow (FBF), heart rate (HR), cardiac output (CO), and mean arterial pressure (MAP) were assessed during DS and SS of the quadriceps muscle with and without CCO...
January 1, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/27823589/intervention-after-endovascular-aneurysm-repair-endosalvage-techniques-including-perigraft-arterial-sac-embolization-and-endograft-relining
#19
REVIEW
Andrew Barleben, Tazo Inui, Erik Owens, John S Lane, Dennis F Bandyk
Endovascular aneurysm repair (EVAR) has revolutionized the treatment of abdominal aortic aneurysm (AAA). However, persistent AAA sac endoleak following EVAR can result in sac diameter increase requiring re-intervention in up to one-third of cases and even result in aneurysm rupture. In this case review, we summarize and detail endovascular re-interventions for each type of endoleak. We also detail specific options including stent-graft relining for indeterminate, Type III, and Type IV endoleaks and perigraft arterial sac embolization to induce thrombosis and resolve acute Type I, II, or III endoleaks...
March 2016: Seminars in Vascular Surgery
https://www.readbyqxmd.com/read/27818999/percutaneous-transluminal-angioplasty-in-patients-with-peripheral-arterial-disease-does-not-affect-circulating-monocyte-subpopulations
#20
Pawel Maga, Tomasz P Mikolajczyk, Lukasz Partyka, Marek Krzanowski, Krzysztof P Malinowski, Rafal Nizankowski
Monocytes are mononuclear cells characterized by distinct morphology and expression of CD14 and CD16 surface receptors. Classical, quiescent monocytes are positive for CD14 (lipopolysaccharide receptor) but do not express Fc gamma receptor III (CD16). Intermediate monocytes coexpress CD16 and CD14. Nonclassical monocytes with low expression of CD14 represent mature macrophage-like monocytes. Monocyte behavior in peripheral arterial disease (PAD) and during vessel wall directed treatment is not well defined...
2016: BioMed Research International
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