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https://www.readbyqxmd.com/read/29786682/-the-implementation-of-the-method-of-enhanced-external-counter-pulsation-for-the-treatment-of-cardiovascular-diseases
#1
V A Badtieva, D N Voroshilova
The cardiovascular diseases occupy a leading place in the structure of overall morbidity affecting the population not only of Russia but also of the majority of the developed countries throughout the world; they thus impose the heavy social and economic burden on both the public healthcare services and the modern society in general. At the same time, systemic atherosclerosis is considered to be one of the most common, severe, and life-threatening condition. Despite the presence of a large number of pharmaceutical and surgical methods for the treatment of this pathology, they are not infrequently lacking the desired effectiveness...
May 21, 2018: Voprosy Kurortologii, Fizioterapii, i Lechebnoĭ Fizicheskoĭ Kultury
https://www.readbyqxmd.com/read/29782509/maternal-cardiovascular-and-endothelial-function-from-first-trimester-to-postpartum
#2
Vassiliki Kolovetsiou-Kreiner, Manfred Georg Moertl, Ilona Papousek, Karin Schmid-Zalaudek, Uwe Lang, Dietmar Schlembach, Mila Cervar-Zivkovic, Helmut Karl Lackner
OBJECTIVE: To explore noninvasively the complex interactions of the maternal hemodynamic system throughout pregnancy and the resulting after-effect six weeks postpartum. METHODS: Eighteen women were tested beginning at the 12th week of gestation at six time-points throughout pregnancy and six weeks postpartum. Heart rate, heart rate variability, blood pressure, pulse transit time (PTT), respiration, and baroreceptor sensitivity were analyzed in resting conditions...
2018: PloS One
https://www.readbyqxmd.com/read/29782258/-contractile-function-of-isolated-hearts-with-preserved-and-reduced-ejection-fraction-in-vivo
#3
V L Lakomkin, A A Abramov, V V Gramovich, O N Vyborov, I M Studneva, O I Pisarenko, V I Kapelko
The aim of the study was comparison of contractile function of isolated hearts of rats with doxorubicin-induced myocardial injury which were tentatively divided according to the level of ejection fraction determined by echocardiography in vivo. After 4 weeks of doxorubicin administration (2 mg/kg subcutaneously once a week) about half of animals had normal (86±1 %) and the other half reduced (61±4 %) ejection fraction. The first group was defined as diastolic heart failure (DHF) and the other as systolic (SHF)...
April 2018: Kardiologiia
https://www.readbyqxmd.com/read/29779036/development-of-a-hemodynamic-model-using-routine-monitoring-parameters-for-nociceptive-responses-evaluation-during-surgery-under-general-anesthesia
#4
Munetaka Hirose, Yoshiko Kobayashi, Shiro Nakamoto, Ryusuke Ueki, Nobutaka Kariya, Tsuneo Tatara
BACKGROUND Routine hemodynamic monitoring parameters under general anesthesia, such as heart rate (HR), systolic blood pressure (SBP), and perfusion index (PI), do not solely reflect intraoperative nociceptive levels. We developed a hemodynamic model combining these 3 parameters for nociceptive responses during general anesthesia, and evaluated nociceptive responses to surgical skin incision. MATERIAL AND METHODS We first retrospectively performed discriminant analysis using 3 values - HR, SBP, and PI - to assess response to skin incision during tympanoplasty, laparoscopic cholecystectomy, and open gastrectomy to determine if combined use of these parameters differentiates nociceptive levels among these 3 surgeries...
May 20, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29778299/cerebral-perfusion-pressure-threshold-to-prevent-delayed-cerebral-ischemia-after-aneurysmal-subarachnoid-hemorrhage
#5
Jiawei Cai, Wenhua Fang, Fuxiang Chen, Zhangya Lin, Yuanxiang Lin, Lianghong Yu, Peisen Yao, Dezhi Kang
OBJECTIVE: To seek a cerebral perfusion pressure (CPP) threshold that can reduce the occurrence of delayed cerebral ischemia (DCI) after aneurysmal subarachnoid hemorrhage (aSAH). METHODS: We analyzed the clinical data of patients with the diagnosis of aSAH and underwent CPP monitoring in our department from February 2014 to December 2015. CPP was divided into four specified thresholds by every 10 mmHg increments, which were from 50 mmHg to 80 mmHg. The totally time ratio of CPP below each threshold was calculated...
May 16, 2018: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/29777585/potential-vascular-mechanisms-in-an-ex-vivo-functional-pig-bladder-model
#6
Uzoma A Anele, Paul H Ratz, Andrew F Colhoun, Sydney Roberts, Ryan Musselman, Randy A Vince, John E Speich, Adam P Klausner
AIMS: Chronic ischemia is a recognized factor in the pathophysiology of underactive bladder (UAB). Although relative ischemia (ie, low blood flow) is known to occur during filling, little is known regarding the pathophysiology that leads to UAB. Therefore, we developed an ex vivo functional porcine model to investigate the role of transient ischemia and whether autoregulation, a mechanism that maintains tissue oxygenation in certain vital organs, also exists in the bladder. METHODS: Using bladders from slaughtered pigs, we prepared an isolated perfused model where we studied the effects of bladder perfusion flow rate on perfusion pressure and tissue oxygenation during the filling phase...
May 19, 2018: Neurourology and Urodynamics
https://www.readbyqxmd.com/read/29777353/intestinal-histopathological-changes-in-a-porcine-model-of-pneumoperitoneum-induced-intra-abdominal-hypertension
#7
Ester Párraga Ros, Laura Correa-Martín, Francisco M Sánchez-Margallo, Irma Eugenia Candanosa-Aranda, Manu L N G Malbrain, Robert Wise, Rafael Latorre, Octavio López Albors, Gregorio Castellanos
BACKGROUND: Low splanchnic perfusion is an immediate effect of pneumoperitoneum-induced intra-abdominal hypertension (IAH). Anatomical structure results in the intestinal mucosa being the area most sensitive to hypoperfusion. The relationship between intestinal injury and clinical parameters of tissue perfusion [abdominal perfusion pressure (APP), gastric intramucosal pH (pHi ) and lactic acid (Lc)] has not been previously studied. This study aimed to monitorize intestinal pathogenesis through sequential ileal biopsies and to measure APP, pHi , and Lc levels at different pneumoperitoneum-induced intra-abdominal pressures (20, 30, and 40 mmHg) to evaluate the potential relationships between them...
May 17, 2018: Surgical Endoscopy
https://www.readbyqxmd.com/read/29771701/dynamic-contrast-enhanced-ultrasound-identifies-microcirculatory-alterations-in-sepsis-induced-acute-kidney-injury
#8
Alexandre Lima, Tom van Rooij, Bulent Ergin, Michele Sorelli, Yasin Ince, Patricia A C Specht, Egbert G Mik, Leonardo Bocchi, Klazina Kooiman, Nico de Jong, Can Ince
OBJECTIVES: We developed quantitative methods to analyze microbubble kinetics based on renal contrast-enhanced ultrasound imaging combined with measurements of sublingual microcirculation on a fixed area to quantify early microvascular alterations in sepsis-induced acute kidney injury. DESIGN: Prospective controlled animal experiment study. SETTING: Hospital-affiliated animal research institution. SUBJECTS: Fifteen female pigs...
May 15, 2018: Critical Care Medicine
https://www.readbyqxmd.com/read/29770889/autoregulation-in-the-neuro-icu
#9
REVIEW
Anson Wang, Santiago Ortega-Gutierrez, Nils H Petersen
PURPOSE OF REVIEW: The purpose of this review is to briefly describe the concept of cerebral autoregulation, to detail several bedside techniques for measuring and assessing autoregulation, and to outline the impact of impaired autoregulation on clinical and functional outcomes in acute brain injury. Furthermore, we will review several autoregulation studies in select forms of acute brain injuries, discuss the potential for its use in patient management in the ICU, and suggest further avenues for research...
May 17, 2018: Current Treatment Options in Neurology
https://www.readbyqxmd.com/read/29768487/an-observational-study-the-utility-of-perfusion-index-as-a-discharge-criterion-for-pain-assessment-in-the-postanesthesia-care-unit
#10
Chun-Lin Chu, Yi-You Huang, Ying-Hou Chen, Ling-Ping Lai, Huei-Ming Yeh
Acute post-operative pain can remain untreated if patients cannot express themselves. The perfusion index (PI) may decrease when pain activates sympathetic tone and may increase after analgesics are administered. We evaluated if the perfusion index is a feasible indicator for objectively assessing pain relief in the postanesthesia care unit (PACU) and calculated the changes in PI measurements at the time of discharge from the PACU relative to baseline PI measurements to examine if the PI is a useful criterion for discharging patients from the postanesthesia care unit...
2018: PloS One
https://www.readbyqxmd.com/read/29768485/choroidal-thickness-in-normal-indian-subjects-using-swept-source-optical-coherence-tomography
#11
Zeeshan Akhtar, Pukhraj Rishi, Ramasubramanian Srikanth, Ekta Rishi, Muna Bhende, Rajiv Raman
AIM: To determine choroidal thickness in healthy Indian subjects using Swept source optical coherence tomography (SS-OCT). METHODS: In this prospective, observational, cross-sectional study; healthy Indian subjects (n = 230) with no history of ocular and/or systemic disorders were enrolled in the study. Choroidal thickness was measured for 230 eyes using SS-OCT. Subjects were divided into six age groups. Main outcome measures were subfoveal choroidal thickness (SFCT) and macular choroidal thickness (MCT) up to 3 mm at 500-micron interval from the fovea was measured in eight different quadrants...
2018: PloS One
https://www.readbyqxmd.com/read/29765431/skin-perfusion-pressure-for-the-prediction-of-wound-healing-in-critical-limb-ischemia-a-meta-analysis
#12
REVIEW
Xuanliang Pan, Chuangang You, Guoxian Chen, Huawei Shao, Chunmao Han, Lizhu Zhi
Introduction: The purpose of this meta-analysis was to determine the value and efficacy of skin perfusion pressure (SPP) for the prediction of wound healing in patients with critical limb ischemia. Material and methods: Medline, Cochrane, EMBASE, and Google Scholar databases were searched from inception until December 31, 2014 using combinations of the following keywords: skin perfusion pressure, limb ischemia, wound healing, prediction. Randomized controlled trials, 2-arm prospective studies, and retrospective studies that measured SPP in patients with limb ischemia were included...
April 2018: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/29763373/oral-glucose-challenge-impairs-skeletal-muscle-microvascular-blood-flow-in-healthy-people
#13
Ryan D Russell, Donghua Hu, Timothy Greenaway, James E Sharman, Stephen Rattigan, Stephen M Richards, Michelle A Keske
Skeletal muscle microvascular (capillary) blood flow increases in the post-prandial state or during insulin infusion due to dilation of pre-capillary arterioles to augment glucose disposal. This effect occurs independent of changes in large artery function. However, acute hyperglycemia impairs vascular function, causes insulin to vasoconstrict pre-capillary arterioles, and causes muscle insulin resistance in vivo. We hypothesize that acute hyperglycemia impairs post-prandial muscle microvascular perfusion, without disrupting normal large artery hemodynamics, in healthy humans...
May 15, 2018: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29763366/right-ventricle-performances-with-echocardiography-and-99m-tc-myocardial-perfusion-imaging-in-pulmonary-arterial-hypertension-patients
#14
Jie Liu, Lei Fei, Guang-Qing Huang, Xiao-Ke Shang, Mei Liu, Zhi-Jun Pei, Yong-Xue Zhang
Right heart catheterization is commonly used to measure right ventricle hemodynamic parameters and is the gold standard for pulmonary arterial hypertension diagnosis; however, it is not suitable for patients' long-term follow-up. Non-invasive echocardiography and nuclear medicine have been applied to measure right ventricle anatomy and function, but the guidelines for the usefulness of clinical parameters remain to be established. The goal of this study is to identify reliable clinical parameters of right ventricle function in pulmonary arterial hypertension patients and analyze the relationship of these clinical parameters with the disease severity of pulmonary arterial hypertension...
May 2018: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/29761310/characteristics-of-patients-with-a-relatively-greater-minimum-ve-vco-2-against-peak-vo-2-and-impaired-exercise-tolerance
#15
Taisuke Nakade, Hitoshi Adachi, Makoto Murata, Shigeru Oshima
PURPOSE: Cardiopulmonary exercise testing (CPX) is used to evaluate functional capacity and assess prognosis in cardiac patients. Ventilatory efficiency (VE/VCO2 ) reflects ventilation-perfusion mismatch; the minimum VE/VCO2 value (minVE/VCO2 ) is representative of pulmonary arterial blood flow in individuals without pulmonary disease. Usually, minVE/VCO2 has a strong relationship with the peak oxygen uptake (VO2 ), but dissociation can occur. Therefore, we investigated the relationship between minVE/VCO2 and predicted peak VO2 (peak VO2 %) and evaluated the parameters associated with a discrepancy between these two parameters...
May 14, 2018: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/29757424/continuous-monitoring-of-kidney-transplant-perfusion-with-near-infrared-spectroscopy
#16
Georgia Malakasioti, Stephen D Marks, Tom Watson, Fariba Williams, Mariesa Taylor-Allkins, Nizam Mamode, Justin Morgan, Wesley N Hayes
Background: Current reliance on clinical, laboratory and Doppler ultrasound (DUS) parameters for monitoring kidney transplant perfusion in the immediate post-operative period in children risks late recognition of allograft hypoperfusion and vascular complications. Near-infrared spectroscopy (NIRS) is a real-time, non-invasive technique for monitoring tissue oxygenation percutaneously. NIRS monitoring of kidney transplant perfusion has not previously been validated to the gold standard of DUS...
May 11, 2018: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/29757278/a-microbiomechanical-system-for-studying-varicosity-formation-and-recovery-in-central-neuron-axons
#17
Dustin Servello, Yuanzheng Gu, Chen Gu
Axonal varicosities are enlarged structures along the shafts of axons with a high degree of heterogeneity. They are present not only in brains with neurodegenerative diseases or injuries, but also in the normal brain. Here, we describe a newly-established micromechanical system to rapidly, reliably, and reversibly induce axonal varicosities, allowing us to understand the mechanisms governing varicosity formation and heterogeneous protein composition. This system represents a novel means to evaluate the effects of compression and shear stress on different subcellular compartments of neurons, different from other in vitro systems that mainly focus on the effect of stretching...
April 30, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29753517/liberal-versus-restrictive-intravenous-fluid-therapy-for-early-septic-shock-rationale-for-a-randomized-trial
#18
Wesley H Self, Matthew W Semler, Rinaldo Bellomo, Samuel M Brown, Bennett P deBoisblanc, Matthew C Exline, Adit A Ginde, Colin K Grissom, David R Janz, Alan E Jones, Kathleen D Liu, Stephen P J Macdonald, Chadwick D Miller, Pauline K Park, Lora A Reineck, Todd W Rice, Jay S Steingrub, Daniel Talmor, Donald M Yealy, Ivor S Douglas, Nathan I Shapiro
Prompt intravenous fluid therapy is a fundamental treatment for patients with septic shock. However, the optimal approach for administering intravenous fluid in septic shock resuscitation is unknown. Two competing strategies are emerging: a liberal fluids approach, consisting of a larger volume of initial fluid (50 to 75 mL/kg [4 to 6 L in an 80-kg adult] during the first 6 hours) and later use of vasopressors, versus a restrictive fluids approach, consisting of a smaller volume of initial fluid (≤30 mL/kg [≤2 to 3 L]), with earlier reliance on vasopressor infusions to maintain blood pressure and perfusion...
May 9, 2018: Annals of Emergency Medicine
https://www.readbyqxmd.com/read/29753173/comparative-effects-of-avocado-oil-and-losartan-on-blood-pressure-renal-vascular-function-and-mitochondrial-oxidative-stress-in-hypertensive-rats
#19
Cristian Adrián Márquez-Ramírez, José Lucio Hernández de la Paz, Omar Ortiz-Avila, Andrés Raya-Farias, Juan Carlos González-Hernández, Alain Raimundo Rodríguez-Orozco, Rafael Salgado-Garciglia, Alfredo Saavedra-Molina, Daniel Godínez-Hernández, Christian Cortés-Rojo
OBJECTIVE: Angiotensin II (Ang-II) antagonism alleviates hypertensive kidney damage by improving mitochondrial function and decreasing oxidative stress. This condition also is associated with altered renal vascular tone due to enhanced constriction by Ang-II. Thus, approaches ameliorating these events are desirable to alleviate kidney damage. Avocado oil, a source of antioxidants and oleic acid, is known to improve mitochondrial function, while oleic acid has antihypertensive effects...
March 20, 2018: Nutrition
https://www.readbyqxmd.com/read/29750878/perfusion-scintigraphy-in-the-assessment-of-autologous-cell-therapy-in-diabetic-patients-with-critical-limb-ischemia
#20
A Nemcova, A Jirkovska, M Dubsky, R Bem, V Fejfarova, V Woskova, A Pysna, M Buncova
Perfusion scintigraphy with technetium-99-methoxy-isobutyl-isonitrile ((99m)Tc-MIBI) is often used for assessing myocardial function but the number of studies concerning lower limb perfusion is limited. The aim of our study was to assess whether (99m)Tc-MIBI was an eligible method for evaluation of the effect of cell therapy on critical limb ischemia (CLI) in diabetic patients. (99m)Tc-MIBI of calf muscles was performed before and 3 months after autologous cell therapy (ACT) in 24 diabetic patients with CLI...
May 10, 2018: Physiological Research
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