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https://www.readbyqxmd.com/read/28231305/effects-of-vasoactive-drugs-on-crystalloid-fluid-kinetics-in-septic-sheep
#1
Yuhong Li, Zheng Xiaozhu, Ru Guomei, Ding Qiannan, Robert G Hahn
PURPOSE: Crystalloid fluid and vasoactive drugs are used in the early treatment of sepsis. The purpose of the present study was to examine how these drugs alter plasma volume expansion, peripheral edema, and urinary excretion. METHODS: Twenty-five anesthetized sheep were made septic by cecal puncture and a short infusion of lipopolysaccharide. After 50 min, a slow infusion of isotonic saline was initiated: the saline either contained no drug, norepinephrine (1 μg/kg/min), phenylephrine (3 μg/kg/min), dopamine (50 μg/kg/min), or esmolol (50 μg/kg/min)...
2017: PloS One
https://www.readbyqxmd.com/read/28231259/impact-of-seasonality-and-air-pollutants-on-carotid-femoral-pulse-wave-velocity-and-wave-reflection-in-hypertensive-patients
#2
Marina Di Pilla, Rosa Maria Bruno, Francesco Stea, Luciano Massetti, Stefano Taddei, Lorenzo Ghiadoni, Pietro Amedeo Modesti
OBJECTIVE: The effects of seasonality on blood pressure (BP) and cardiovascular (CV) events are well established, while the influence of seasonality and other environmental factors on arterial stiffness and wave reflection has never been analyzed. This study evaluated whether seasonality (daily number of hours of light) and acute variations in outdoor temperature and air pollutants may affect carotid-femoral pulse wave velocity (PWV) and pressure augmentation. DESIGN AND METHOD: 731 hypertensive patients (30-88 years, 417 treated) were enrolled in a cross-sectional study during a 5-year period...
2017: PloS One
https://www.readbyqxmd.com/read/28230063/effects-of-calcium-plus-vitamin-d-supplementation-on-blood-pressure-a-systematic-review-and-meta-analysis-of-randomized-controlled-trials
#3
REVIEW
L Wu, D Sun
The effect of calcium or vitamin D supplement on blood pressure (BP) has been explored in previous meta-analyses, but the results are conflicting. The combined efficacy of calcium and vitamin D on BP has not been systematically assessed. Thus, we conducted a meta-analysis of randomized controlled trials (RCTs) to explore the effect of calcium plus vitamin D (CaD) supplementation on changes of systolic blood pressure (SBP) and diastolic blood pressure among male and female participants (with and without diagnosed hypertension) aged 18 years or older...
February 23, 2017: Journal of Human Hypertension
https://www.readbyqxmd.com/read/28228373/statins-and-fibrates-for-diabetic-retinopathy-protocol-for-a-systematic-review
#4
Vania Mozetic, Carolina Gomes Freitas, Rachel Riera
BACKGROUND: Diabetic retinopathy (DR) is a common microvascular complication of diabetes mellitus, and more than 75% of patients who have had diabetes for more than 20 years will have some degree of DR. This disease is highly destructive to self-esteem and puts a high burden on public health and pension systems due to the effects that it has on people of working age. The current mainstay of treatment is laser photocoagulation, which causes impairment of vision and discomfort to patients...
February 22, 2017: JMIR Research Protocols
https://www.readbyqxmd.com/read/28228335/alterations-in-cardiac-autonomic-control-in-spinal-cord-injury
#5
Fin Biering-Sørensen, Tor Biering-Sørensen, Nan Liu, Lasse Malmqvist, Jill Maria Wecht, Andrei Krassioukov
A spinal cord injury (SCI) interferes with the autonomic nervous system (ANS). The effect on the cardiovascular system will depend on the extent of damage to the spinal/central component of ANS. The cardiac changes are caused by loss of supraspinal sympathetic control and relatively increased parasympathetic cardiac control. Decreases in sympathetic activity result in heart rate and the arterial blood pressure changes, and may cause arrhythmias, in particular bradycardia, with the risk of cardiac arrest in those with cervical or high thoracic injuries...
February 15, 2017: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/28227135/quantification-of-peripheral-and-central-blood-pressure-variability-using-a-time-frequency-method
#6
Z Kouchaki, M Butlin, A Qasem, A P Avolio, Z Kouchaki, M Butlin, A Qasem, A P Avolio, Z Kouchaki, A P Avolio, M Butlin, A Qasem
Systolic blood pressure variability (BPV) is associated with cardiovascular events. As the beat-to-beat variation of blood pressure is due to interaction of several cardiovascular control systems operating with different response times, assessment of BPV by spectral analysis using the continuous measurement of arterial pressure in the finger is used to differentiate the contribution of these systems in regulating blood pressure. However, as baroreceptors are centrally located, this study considered applying a continuous aortic pressure signal estimated noninvasively from finger pressure for assessment of systolic BPV by a time-frequency method using Short Time Fourier Transform (STFT)...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227066/evaluation-of-the-impact-of-arterial-wall-viscosity-in-pressure-morphology-by-means-of-a-simplified-1d-model
#7
F Gabaldon Castillo, L J Cymberknop, M R Alfonso, M Martinez Sartore, R L Armentano, F Gabaldon Castillo, L J Cymberknop, M R Alfonso, M Martinez Sartore, R L Armentano, M R Alfonso, F Gabaldon Castillo, L J Cymberknop, M Martinez Sartore, R L Armentano
INTRODUCTION: The interest on computational simulations of biomedical models has increased in the last years. Nevertheless, the viscous properties of vessel all are usually neglected. MATERIALS AND METHODS: A 1D model of blood flow and its interaction with the arterial wall was implemented. Non-viscous modeling and the addition of a wall-viscosity term were considered. The goodness of fit in each case was evaluated. RESULTS: Simulated radial blood pressure was generated using central blood pressure as the input of the proposed 1D tapered model...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226574/a-temperature-controlled-glove-with-non-invasive-arterial-pulse-sensing-for-active-neuro-vascular-assessment
#8
Andrew M Carek, Omer T Inan, Andrew M Carek, Omer T Inan, Andrew M Carek, Omer T Inan
A non-invasive, active neuro-vascular assessment system was developed using a modified temperature-controlled glove and feedback techniques. The glove incorporates local heating and cooling of the hand using multi-point skin temperature measurements as feedback, and thereby induces local and central mechanisms involved in thermoregulation. Electrocardiogram (ECG), photoplethysmogram (PPG) and non-invasive finger-cuff based blood pressure (BP) measurements were used to monitor electrophysiology and hemodynamic changes in response to temperature modulation...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28224720/pyridostigmine-bromide-versus-fludrocortisone-in-the-treatment-of-orthostatic-hypotension-in-parkinson-s-disease-a-randomized-controlled-trial
#9
S R Schreglmann, F Büchele, M Sommerauer, L Epprecht, G Kägi, S Hägele-Link, O Götze, L Zimmerli, D Waldvogel, C R Baumann
BACKGROUND AND PURPOSE: Evidence for effective treatment options for orthostatic hypotension (OH) in Parkinson's disease (PD) is scarce. Elevation of cholinergic tone with pyridostigmine bromide has been reported as a way to improve blood pressure (bp) regulation in neurogenic hypotension without causing supine hypertension. METHODS: This was a double-centre, double-blind, randomized, active-control, crossover, phase II non-inferiority trial of pyridostigmine bromide for OH in PD (clinicaltrials...
February 22, 2017: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
https://www.readbyqxmd.com/read/28223471/adiposity-and-blood-pressure-in-110-000-mexican-adults
#10
Louisa Gnatiuc, Jesus Alegre-Díaz, Jim Halsey, William G Herrington, Malaquías López-Cervantes, Sarah Lewington, Rory Collins, Roberto Tapia-Conyer, Richard Peto, Jonathan R Emberson, Pablo Kuri-Morales
Previous studies have reached differing conclusions about the importance of general versus central markers of adiposity to blood pressure, leading to suggestions that population-specific adiposity thresholds may be needed. We examined the relevance of adiposity to blood pressure among 111 911 men and women who, when recruited into the Mexico City Prospective Study, were aged 35 to 89 years, had no chronic disease, and were not taking antihypertensives. Linear regression was used to estimate the effects on systolic and diastolic blood pressure of 2 markers of general adiposity (body mass index and height-adjusted weight) and 4 markers of central adiposity (waist circumference, hip circumference, waist:hip ratio, and waist:height ratio), adjusted for relevant confounders...
February 21, 2017: Hypertension
https://www.readbyqxmd.com/read/28222517/association-of-central-arterial-stiffness-and-pressure-pulsatility-with-mild-cognitive-impairment-and-dementia-the-atherosclerosis-risk-in-communities-study-neurocognitive-study-aric-ncs
#11
Michelle L Meyer, Priya Palta, Hirofumi Tanaka, Jennifer A Deal, Jacqueline Wright, David S Knopman, Michael Griswold, Thomas H Mosley, Gerardo Heiss
BACKGROUND: The association of central arterial stiffness and pressure pulsatility with mild cognitive impairment (MCI) and dementia is not well characterized in the population-based setting. OBJECTIVE: The aim of this study was to quantify the cross-sectional association of arterial stiffness and pressure pulsatility with MCI and dementia among 4,461 older white and black adults from the population-based Atherosclerosis Risk in Communities Study-Neurocognitive Study...
February 10, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28222036/vascular-risk-factors-are-associated-with-retinal-arteriolar-narrowing-and-venular-widening-in-children-and-adolescents-with-type-1-diabetes
#12
Stuart Keel, Catherine Itsiopoulos, Konstandina Koklanis, Meri Vukicevic, Fergus Cameron, Laima Brazionis
BACKGROUND: The aim of the study was to describe the relationship of retinal arteriolar and venular calibre with vascular risk factors in children and adolescents with type 1 diabetes. METHODS: In this hospital-based cross-sectional study, the medical files of 483 children and adolescents with type 1 diabetes were audited to collect retinal images and relevant clinical data. Retinal vascular calibre was measured using standardised protocols. RESULTS: After multivariable adjustments, a vascular risk profile that included: older age, higher serum creatinine, higher systolic blood pressure (SBP), higher body mass index (BMI), abnormal estimated glomerular filtration rate (eGFR), lower high-density lipoproteins (HDL) cholesterol, longer duration of diabetes and higher serum sodium was associated with narrower central retinal artery equivalent (CRAE) (95% CI=-4...
February 21, 2017: Journal of Pediatric Endocrinology & Metabolism: JPEM
https://www.readbyqxmd.com/read/28220472/renal-denervation-for-resistant-hypertension
#13
REVIEW
Giuseppe Coppolino, Anna Pisano, Laura Rivoli, Davide Bolignano
BACKGROUND: Resistant hypertension is highly prevalent among the general hypertensive population and the clinical management of this condition remains problematic. Different approaches, including a more intensified antihypertensive therapy, lifestyle modifications, or both, have largely failed to improve patients' outcomes and to reduce cardiovascular and renal risk. As renal sympathetic hyperactivity is a major driver of resistant hypertension, renal sympathetic ablation (renal denervation) has been recently proposed as a possible therapeutic alternative to treat this condition...
February 21, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28217591/prevalence-of-and-risk-factors-for-hypertension-among-urban-communities-of-north-sudan-detecting-a-silent-killer
#14
Sarra O Bushara, Sufian K Noor, Abd Alaziz H Ibraheem, Wadie M Elmadhoun, Mohamed H Ahmed
BACKGROUND: Hypertension is a common global health problem in many countries including Sudan. The objective of this study was to determine the prevalence of and risk factors for high blood pressure (BP) in River Nile State (RNS), Sudan. MATERIALS AND METHODS: A community-based, cross-sectional study was conducted by a house-to-house survey; all consented adults from the main four cities, Atbara, Shendi, Ed Damer, and Berber, were interviewed using standardized pretested questionnaire to record medical history, sociodemographic and lifestyle characteristics...
July 2016: Journal of Family Medicine and Primary Care
https://www.readbyqxmd.com/read/28216699/comparison-of-volume-controlled-ventilation-and-pressure-controlled-ventilation-in-patients-undergoing-robot-assisted-pelvic-surgeries-an-open-label-trial
#15
Rishabh Jaju, Pooja Bihani Jaju, Mamta Dubey, Sadik Mohammad, A K Bhargava
BACKGROUND AND AIMS: Although volume controlled ventilation (VCV) has been the traditional mode of ventilation in robotic surgery, recently pressure controlled ventilation (PCV) has been used more frequently. However, evidence on whether PCV is superior to VCV is still lacking. We intended to compare the effects of VCV and PCV on respiratory mechanics and haemodynamic in patients undergoing robotic surgeries in steep Trendelenburg position. METHODS: This prospective, randomized trial was conducted on sixty patients between 20 and 70 years belonging to the American Society of Anesthesiologist Physical Status I-II...
January 2017: Indian Journal of Anaesthesia
https://www.readbyqxmd.com/read/28216283/life-course-path-analysis-of-total-and-central-adiposity-throughout-adolescence-on-adult-blood-pressure-and-insulin-resistance
#16
J Araújo, M Severo, S Santos, E Ramos
BACKGROUND AND AIM: We aimed to study whether the effect of adolescent adiposity on adult blood pressure and insulin resistance was mediated by adult adiposity. METHODS AND RESULTS: Data from the EPITeen cohort at 13, 17 and 21 years was used (n = 2211). Sex- and age-specific body mass index z-scores (BMIz) and waist-to-hip ratio (WHR) were used as indicators of total and central adiposity, respectively. Systolic blood pressure (SBP), glucose and insulin were assessed at 21 years and the homeostasis model assessment (HOMA-IR) was used as a marker of insulin resistance...
December 24, 2016: Nutrition, Metabolism, and Cardiovascular Diseases: NMCD
https://www.readbyqxmd.com/read/28210225/increased-apoptosis-in-the-paraventricular-nucleus-mediated-by-at1r-ras-erk1-2-signaling-results-in-sympathetic-hyperactivity-and-renovascular-hypertension-in-rats-after-kidney-injury
#17
Hongguo Zhu, Lishan Tan, Yumin Li, Jiawen Li, Minzi Qiu, Lanying Li, Mengbi Zhang, Min Liang, Aiqing Li
Background: The central nervous system plays a vital role in the development of hypertension, but the molecular regulatory mechanisms are not fully understood. This study aimed to explore signaling in the paraventricular nucleus (PVN) which might contribute to renal hypertension. Methods: Renal hypertension model was established by five-sixth nephrectomy operation (5/6Nx) in male Sprague Dawley rats. Ten weeks afterwards, they were random assigned to no treatment, or intracerebroventricular injection (ICV) with artificial cerebrospinal fluid, losartan [angiotensin II receptor type 1 (AT1R) antagonist], farnesylthiosalicylic acid (Ras inhibitor), PD98059 (MEK inhibitor), or SB203580 (p38 inhibitor) and Z-DEVD-FMK (caspase-3 inhibitor)...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28202946/association-of-serum-uric-acid-with-subsequent-arterial-stiffness-and-renal-function-in-normotensive-subjects
#18
Shiori Nagano, Maasa Takahashi, Nobuyuki Miyai, Mayumi Oka, Miyoko Utsumi, Mitsuru Shiba, Kanae Mure, Tatsuya Takeshita, Mikio Arita
Serum uric acid (SUA) is correlated with an increased risk of not only gout but also cardiovascular diseases. The present study aimed to longitudinally evaluate the effects of SUA level on renal function and arterial stiffness in a population-based sample of normotensive subjects. The subjects completed a health checkup in 2002 at baseline and in 2011 or 2012 at the end of the follow-up period. A total of 407 normotensive subjects (171 men and 236 women) aged 26-66 years were enrolled in this study. We measured blood pressure (BP), brachial-ankle pulse wave velocity (baPWV), central BP, intima-media thickness, SUA level and estimated glomerular filtration rate (eGFR)...
February 16, 2017: Hypertension Research: Official Journal of the Japanese Society of Hypertension
https://www.readbyqxmd.com/read/28202944/controversies-in-the-association-of-cardiorespiratory-fitness-and-arterial-stiffness-in-children-and-adolescents
#19
Joanna Meyer, Julia Elmenhorst, Tobias Giegerich, Renate Oberhoffer, Jan Müller
The relationship between cardiorespiratory fitness and arterial compliance in children and adolescents remains controversial. The aim of this study was to assess this association with a quantitative approach. A total of 646 healthy children and adolescents (316 females, age 13.9±2.1 years) were cross-sectionally investigated in seven school settings in and around Munich for their cardiorespiratory fitness and demographic, anthropometric and hemodynamic parameters. Surrogates of arterial stiffness, such as pulse wave velocity (PWV), Augmentation Index normalized to a heart rate of 75 (AI@75), and peripheral and central systolic blood pressures were measured in a supine position using the oscillometric Mobil-O-Graph...
February 16, 2017: Hypertension Research: Official Journal of the Japanese Society of Hypertension
https://www.readbyqxmd.com/read/28197803/obesity-related-parameters-and-colorectal-adenoma-development
#20
Tae Jun Kim, Jee Eun Kim, Yoon-Ho Choi, Sung Noh Hong, Young-Ho Kim, Dong Kyung Chang, Poong-Lyul Rhee, Min-Ji Kim, Sin-Ho Jung, Hee Jung Son
BACKGROUND: Obesity increases the risk of colorectal adenoma and colorectal cancer. However, the obesity-related parameters that are best for assessing the risk of colorectal adenoma development remain unclear. We analyzed the parameters that may best describe the association between obesity and colorectal adenoma development. METHODS: In this retrospective cohort study, 3405 individuals underwent screening colonoscopy during routine health examinations. We measured body mass index; waist circumference; and metabolic parameters such as high-density lipoprotein-cholesterol, glucose, triglyceride, and systolic blood pressure...
February 14, 2017: Journal of Gastroenterology
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