keyword
MENU ▼
Read by QxMD icon Read
search

Index of resistivity of vessel

keyword
https://www.readbyqxmd.com/read/27932897/effect-of-ovarian-endometrioma-on-uterine-and-ovarian-blood-flow-in-infertile-women
#1
Akmal El-Mazny, Ahmed Kamel, Wafaa Ramadan, Sherine Gad-Allah, Suzy Abdelaziz, Ahmed M Hussein
BACKGROUND: Angiogenesis has been found to be among the most important factors in the pathogenesis of endometriosis. The formation of new blood vessels is critical for the survival of newly implanted endometriotic foci. The use of 3-D power Doppler allows for the demonstration of the dynamic vascular changes that occur during the process of in vitro fertilization (IVF). We aimed to evaluate the effect of ovarian endometrioma on uterine and ovarian blood flow in infertile women. MATERIALS AND METHODS: In a case-control study at a university teaching hospital, 138 women with unilateral ovarian endometrioma scheduled for IVF were compared to 138 women with male-factor or unexplained infertility...
2016: International Journal of Women's Health
https://www.readbyqxmd.com/read/27908671/effect-of-gnrh-and-hcg-on-progesterone-concentration-and-ovarian-and-luteal-blood-flow-in-diestrous-mares
#2
L F C Brito, J M Baldrighi, C A Wolf, O J Ginther
The objective of the present study was to investigate the effect of reproductive hormones (GnRH, hCG, LH and progesterone) on the regulation of corpus luteum (CL) and ovarian blood flow. Diestrous mares received a single treatment of saline, 100μg gonadorelin (GnRH), or 1500IU hCG 10days after ovulation. Plasma LH and progesterone concentrations, resistance index (RI) for ovarian artery blood-flow, and percentage of corpus luteum (CL) with color-Doppler signals of blood flow were determined immediately before treatment (hour 0) and at hours 0...
November 23, 2016: Animal Reproduction Science
https://www.readbyqxmd.com/read/27879450/human-placental-arterial-distensibility-birth-weight-and-body-size-are-positively-related-to-fetal-homocysteine-concentration
#3
Stephen W D'Souza, Nita Solanky, Jane Guarino, Stuart Moat, Colin P Sibley, Michael Taggart, Jocelyn D Glazier
Methionine demethylation during metabolism generates homocysteine (Hcy) and its remethylation requires folate and cobalamin. Elevated Hcy concentrations are associated with vascular-related complications of pregnancy, including increased vascular stiffness, predictive of clinical vascular disease. Maternal and fetal total Hcy (tHcy) concentrations are positively related, yet the influence of Hcy on fetoplacental vascular function in normal pregnancy has not been examined. We hypothesized that Hcy alters fetoplacental vascular characteristics with influences on fetal growth outcomes...
November 21, 2016: Reproductive Sciences
https://www.readbyqxmd.com/read/27790544/diagnostic-accuracy-of-b-mode-usg-and-doppler-scan-for-ovarian-lesions
#4
Mamta Goyal, Vinish Kumar Agarwal
INTRODUCTION: Ultrasonography (USG) is considered as the primary imaging modality for confirmation of ovarian mass and to differentiate them in to benign or malignant. AIM: The present study was conducted with the aim to evaluate accuracy of B- mode USG and Doppler scan (Colour Doppler + Spectral Doppler) for ovarian lesions. MATERIALS AND METHODS: The patients included in the study were from those referred with either palpable adnexal mass or incidentally detected adnexal masses...
September 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27766047/microrna-in-atherothromobosis-is-it-useful-as-a-disease-marker
#5
REVIEW
Satoshi Fujii, Tomonori Sugiura, Yasuaki Dohi, Nobuyuki Ohte
Atherosclerosis is one of the major causes of death. Data from animal experiments suggest that atherosclerosis involves an inflammatory process of the vascular wall under hyperlipidemia. Atherothrombosis can become a serious complication of atherosclerosis leading to acute cardiovascular events such as myocardial infarction and stroke. Clinical applications to use this knowledge remain scarce. The plasma levels of vascular endothelium-enriched microRNA (miRNAs) in patients with atherosclerotic vascular disease could serve as a disease marker...
2016: Thrombosis Journal
https://www.readbyqxmd.com/read/27763874/effects-of-body-position-on-exercise-capacity-and-pulmonary-vascular-pressure-flow-relationships
#6
Kevin Forton, Yoshiki Motoji, Gael Deboeck, Vitalie Faoro, Robert Naeije
There has been revival of in interest in exercise testing of the pulmonary circulation for the diagnosis of pulmonary vascular disease, but there still is uncertainty about body position and the most relevant measurements. Doppler echocardiography pulmonary hemodynamic measurements were performed at progressively increased workload in 26 healthy adult volunteers in supine, semi-recumbent and upright positions which were randomly assigned at 24 hours intervals. Mean pulmonary artery pressure (mPAP) was estimated from the maximum tricuspid regurgitation jet velocity...
October 7, 2016: Journal of Applied Physiology
https://www.readbyqxmd.com/read/27754150/os-29-02-circadian-blood-pressure-profile-abnormalities-and-autonomic-dysfunction
#7
Oleg Mamontov, Mikhail Bogachev, Andrey Kozlenoc
OBJECTIVE: To assess the autonomic regulation in patients with various circadian blood pressure profile (CBPP) anomalies that persisted despite of combined antihypertensive therapy. DESIGN AND METHOD: We studied 114 hypertensives aged 56,8 ± 17,9 years receiving combined antihypertensive therapy divided into two groups, with adequate (n = 61) and inadequate (n = 53) CBPP. Groups were comparable in terms of age and number of drugs intake per day (2.8 ± 1...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27703060/quantitative-assessment-of-parent-vessel-and-distal-intracranial-hemodynamics-following-pipeline-flow-diversion
#8
Sophia F Shakur, Victor A Aletich, Sepideh Amin-Hanjani, Ahmed E Hussein, Fady T Charbel, Ali Alaraj
BACKGROUND: Pipeline embolization devices (PEDs) are commonly used for endovascular treatment of cerebral aneurysms but can be associated with delayed ipsilateral intraparenchymal hemorrhage. Although intra-aneurysmal hemodynamic changes have been studied, parent vessel and intracranial hemodynamics after PED use are unknown. We examine the impact of flow diversion on parent artery and distal intracranial hemodynamics. METHOD: Patients with internal carotid cerebral aneurysms treated with PED who had flow volume rate, flow velocities, pulsatility index, resistance index, Lindegaard ratio, and wall shear stress (WSS) obtained after treatment using quantitative magnetic resonance angiography were reviewed...
October 4, 2016: Interventional Neuroradiology
https://www.readbyqxmd.com/read/27698790/glioblastoma-multiforme-effect-of-hypoxia-and-hypoxia-inducible-factors-on-therapeutic-approaches
#9
Wen-Juan Huang, Wei-Wei Chen, Xia Zhang
Central nervous system-based cancers have a much higher mortality rate with the 2016 estimates at 6.4 for incidence and 4.3 for deaths per 100,000 individuals. Grade IV astrocytomas, known as glioblastomas are highly aggressive and show a high proliferation index, diffused infiltration, angiogenesis, microvascular proliferation and pleomorphic vessels, resistance to apoptosis, and pseudopalisading necrosis. Extensive hypoxic regions in glioblastomas contribute to the highly malignant phenotype of these tumors...
October 2016: Oncology Letters
https://www.readbyqxmd.com/read/27688688/incidence-of-insulin-resistance-and-diabetes-in-patients-with-portosystemic-shunts-without-liver-dysfunction
#10
Ying Li, Gao Yang, Jinwei Qiang, Songqi Cai, Hao Zhou
OBJECTIVE: To investigate the incidence of insulin resistance (IR) and diabetes in patients with chronic hepatic schistosomiasis japonica (HSJ) and portosystemic shunts (PSS). METHODS: Pre- and post-contrasted computed tomography images obtained from patients with HSJ and control subjects were reviewed by two radiologists who identified and graded any shunting vessels. Anthropometric measurements, hepatic enzymes, lipid profile, blood levels of albumin, glucose, insulin and homeostasis model assessment (HOMA-2) index of all participants were also assessed...
September 29, 2016: Journal of International Medical Research
https://www.readbyqxmd.com/read/27685989/hemodynamics-in-coronary-arterial-tree-of-serial-stenoses
#11
Xi Chen, Yang Gao, Bin Lu, Xinwei Jia, Liang Zhong, Ghassan S Kassab, Wenchang Tan, Yunlong Huo
Serial segmental narrowing frequently occurs in humans, which alters coronary hemodynamics and further affects atherosclerotic progression and plaque formation. The objective of this study was to understand the distribution of hemodynamic parameters in the epicardial left main coronary arterial (LMCA) tree with serial stenoses reconstructed from patient computer tomography angiography (CTA) images. A finite volume method was used in conjunction with the inlet pressure wave and outlet flow resistance. The time-averaged wall shear stress (TAWSS) and oscillatory shear index (OSI) were determined from the flow field...
2016: PloS One
https://www.readbyqxmd.com/read/27680812/g1-maternal-haemodynamics-assessment-in-preterm-delivery-two-different-haemodynamic-profiles
#12
D Farsetti, D Lo Presti, I Pisani, G M Tiralongo, G Gagliardi, B Vasapollo, G P Novelli, H Valensise
INTRODUCTION: The purpose of our study was to evaluate the maternal haemodynamic profile in women diagnosed with threatened preterm delivery (TPD) in order to understand the possible pathophysiologic mechanism leading to an increased lifetime risk for future cardiovascular disease. METHODS: Sixty-eight patients diagnosed with TPD were enrolled and assessed using a non-invasive method (USCOM®) to determine the haemodynamic parameters. Cervix length assessment, vaginal and rectal swabs, blood inflammatory indexes, foetal vessel Doppler velocimetry, gestational age at the delivery and neonatal outcomes were considered...
August 2016: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/27643678/computational-and-experimental-investigation-into-mechanical-performances-of-poly-l-lactide-acid-plla-coronary-stents
#13
Qian Wang, Gang Fang, Yinghong Zhao, Guohui Wang, Tao Cai
Poly-L-lactide Acid (PLLA), as a credible biodegradable polymer-based material, can provide a promising amount of degradation time for vessel remodeling. Served as a sort of reliable intravascular implants, PLLA stents are expected to provide sufficient scaffolding to the target arteries without generating too much recoil after deployment. Besides, the stress and strain distribution should be as homogeneous as possible, and the stent conformability in fitting to the nature curvature of the vessels needs to be guaranteed...
August 31, 2016: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/27643080/os-29-02-circadian-blood-pressure-profile-abnormalities-and-autonomic-dysfunction
#14
Oleg Mamontov, Mikhail Bogachev, Andrey Kozlenoc
OBJECTIVE: To assess the autonomic regulation in patients with various circadian blood pressure profile (CBPP) anomalies that persisted despite of combined antihypertensive therapy. DESIGN AND METHOD: We studied 114 hypertensives aged 56,8 ± 17,9 years receiving combined antihypertensive therapy divided into two groups, with adequate (n = 61) and inadequate (n = 53) CBPP. Groups were comparable in terms of age and number of drugs intake per day (2.8 ± 1...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27638718/transcranial-doppler-in-the-evaluation-of-infants-treated-with-retrograde-ventriculosinus-shunt
#15
Matheus Fernandes de Oliveira, Manoel Jacobsen Teixeira, Marcelo de Lima Oliveira, Edson Bor Seng-Shu, Karen Andrade Norremose, Fernando Campos Gomes Pinto
INTRODUCTION: Hydrocephalus is a prevalent condition among infants. Retrograde ventriculosinus shunt (RVSS) proposes a feasible option to treat hydrocephalus according to the principles presented by El-Shafei. In this essay, we analyze nuances and application of transcranial Doppler (TCD) in patients submitted to RVSS. METHODS: We consecutively enrolled patients diagnosed with hydrocephalus after surgical repair of myelomeningocele from January 2010 to January 2012, users of Hospital das Clinicas, University of Sao Paulo...
September 14, 2016: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/27632556/association-of-prostate-blood-flow-with-male-lower-urinary-tract-symptoms
#16
Kuan-Yu Wu, Yuh-Shyan Tsai, Chia-Hong Chen, I-Hung Chen, Tzong-Shin Tzai, Yat-Ching Tong
PURPOSE: To investigate the association of prostate blood flow (PBF) with lower urinary tract symptoms (LUTS) in aged males using Doppler spectral waveform (DSW) analysis. PATIENTS AND METHODS: We performed a prospective analysis involving 133 aged males with clinical diagnosis of LUTS. DSW parameters (peak-systolic velocity (PSV), end-diastolic velocity (EDV), and resistive index (RI)) were measured at bilateral neurovascular bundles (NVB), periurethral, and capsular branches by Doppler transrectal ultrasound with the patient in the right lateral decubitus position...
2016: Urologia Internationalis
https://www.readbyqxmd.com/read/27622410/ultrasonographic-diagnosis-of-stenosis-of-native-arteriovenous-fistulas-in-haemodialysis-patients
#17
Dacian-Călin Tirinescu, Cosmina Ioana Bondor, Dan Ştefan Vlăduțiu, Ioan Mihai Pațiu, Diana Moldovan, Remus Orășan, Ina Maria Kacsó
AIMS: Ultrasound (US) examination is an important tool in the diagnosis of arteriovenous (AVF) stenoses; different US measures are available for assessing the severity of stenoses. The aim of our study was to analyse risk factors and consequences of AVF stenosis and its severity and to compare the usefulness of different US measures of stenoses' severity. MATERIAL AND METHODS: Ninety-seven prevalent patients from a single dialysis centre with patent AVF were included...
September 2016: Medical Ultrasonography
https://www.readbyqxmd.com/read/27622407/high-frequency-sonography-in-the-evaluation-of-nail-psoriasis
#18
Mihaela Elena Marina, Carolina Solomon, Sorana-Daniela Bolboaca, Corina Bocsa, Carmen Mihaela Mihu, Alexandru Dumitru Tătaru
AIM: To evaluate the morphostructural aspects and nail vascularity in the nail unit of patients with psoriasis, and to evaluate whether there are differences among psoriatic patients with and without nail involvement. MATERIAL AND METHODS: Nail plates and nail bed changes, nail fold vessel resistance index (NVRI), power and color Doppler blood flow appearances were investigated in 23 patients with moderate-to-severe psoriasis, with and without nail involvement, and compared to those of 11 healthy participants...
September 2016: Medical Ultrasonography
https://www.readbyqxmd.com/read/27595365/relationship-of-pulsatility-and-resistance-indices-to-cerebral-arteriovenous-malformation-angioarchitectural-features-and-hemorrhage
#19
Sophia F Shakur, Sepideh Amin-Hanjani, Hassan Mostafa, Victor A Aletich, Fady T Charbel, Ali Alaraj
The role that hemodynamics plays in the pathophysiology of cerebral arteriovenous malformation (AVM) hemorrhage remains unclear. Here, we examine the relationship of pulsatility and resistance indices to AVM angioarchitectural features and hemorrhage. Records of patients with cerebral AVMs evaluated at our institution between 2007-2014 and with flows obtained before treatment using quantitative magnetic resonance angiography (QMRA) were retrospectively reviewed. Flow volume rate and flow velocity were measured in primary arterial feeders and compared to their contralateral counterparts...
November 2016: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/27579304/pulse-wave-variation-during-the-menstrual-cycle-in-women-with-menstrual-pain
#20
Soo Hyung Jeon, Kyu Kon Kim, In Seon Lee, Yong Tae Lee, Gyeong Cheol Kim, Gyoo Yong Chi, Hye Sook Cho, Hee Jung Kang, Jong Won Kim
Objective. This study is performed to obtain objective diagnostic indicators associated with menstrual pain using pulse wave analysis. Methods. Using a pulse diagnostic device, we measured the pulse waves of 541 women aged between 19 and 30 years, placed in either an experimental group with menstrual pain (n = 329) or a control group with little or no menstrual pain (n = 212). Measurements were taken during both the menstrual and nonmenstrual periods, and comparative analysis was performed. Results. During the nonmenstrual period, the experimental group showed a significantly higher value in the left radial artery for the radial augmentation index (RAI) (p = 0...
2016: BioMed Research International
keyword
keyword
92600
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"