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https://www.readbyqxmd.com/read/28721998/in-vitro-effect-of-chlorhexidine-gel-on-torque-and-detorque-values-of-implant-abutment-screw
#1
Hamid Neshandar Asli, Bardia Vadiati Saberi, Arezoo Sadat Fatemi
PURPOSE: Use of chlorhexidine (CHX) gel to eliminate the malodor of implant cavity may decrease the friction coefficient and effective preload and result in abutment screw loosening. This study aimed to assess the effect of CHX gel on the preload, torque, and detorque values. MATERIALS AND METHODS: This in vitro experimental study was conducted on three groups of five implants. Group A (G1) was the control group and no material was applied to the implant cavity...
May 2017: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
https://www.readbyqxmd.com/read/28692632/high-habitual-physical-activity-improves-acute-energy-compensation-in-nonobese-adults
#2
Kristine Beaulieu, Mark Hopkins, Cecilia Long, John Blundell, Graham Finlayson
PURPOSE: Evidence suggests that homeostatic satiety signalling is enhanced with higher levels of physical activity (PA), with active individuals demonstrating an improved ability to compensate for previous energy intake (EI). However, prior studies lacked objective assessment of both PA level and EI. This study examined the effect of objectively-measured PA level on homeostatic (energy compensation) and hedonic (liking and wanting) responses to high-energy (HEP), low-energy (LEP) and control preloads...
July 7, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28665712/left-ventricular-end-diastole-hemodynamics-is-strongly-associated-with-spontaneous-cardiac-baroreflex-in-humans
#3
Karol Makowski, Elżbieta Kramarz, Grzegorz Kamiński, Monika Grzęda, Paulina Kramarz, Grzegorz Kade
BACKGROUND: In animals, hemodynamic conditions during left ventricular (LV) end-diastole are crucial for the excitation of autonomic afferents distributed throughout cardiac chambers and large thoracic vessels. The objective of the study was to select the echocardiographic indices of LV diastolic function that are the most potent predictors of the heart's spontaneous baroreflex in humans. METHODS: In 47 untreated hypertensive patients (26 with normal and 21 with increased left atrium diameter) and 24 healthy controls, baroreflex sensitivity (BRS) was assessed in the low (αLF; 0...
June 30, 2017: Clinical and Experimental Hypertension: CHE
https://www.readbyqxmd.com/read/28665469/central-venous-pressure-monitoring-via-peripherally-or-centrally-inserted-central-catheters-a-systematic-review-and-meta-analysis
#4
Filippo Sanfilippo, Alberto Noto, Gennaro Martucci, Marco Farbo, Gaetano Burgio, Daniele G Biasucci
INTRODUCTION: The central venous pressure (CVP) is the most commonly used static marker of preload for guiding fluid therapy in critically ill patients, though its usefulness remains controversial. Centrally inserted central catheters (CICCs) are the gold-standard devices for CVP monitoring but peripherally inserted central catheters (PICCs) may represent a valid alternative. We undertook a systematic review and meta-analysis with the aim to investigate whether the difference between PICC- and CICC-measured CVP is not significant...
June 23, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/28659550/significant-prognostic-value-of-acute-preload-stress-echocardiography-using-leg-positive-pressure-maneuver-for-patients-with-symptomatic-severe-aortic-stenosis-awaiting-aortic-valve-intervention
#5
Hiroki Matsuzoe, Kensuke Matsumoto, Hidekazu Tanaka, Yutaka Hatani, Keiko Hatazawa, Hiroyuki Shimoura, Junichi Ooka, Hiroyuki Sano, Keiko Ryo-Koriyama, Toshiro Shinke, Hirotsugu Yamada, Yutaka Okita, Ken-Ichi Hirata
BACKGROUND: Although aortic valve intervention is recommended for virtually all symptomatic patients with aortic stenosis (AS), how urgently the intervention should be performed remains controversial. The aim of this study was thus to determine whether the preload reserve in response to leg-positive pressure (LPP) maneuver could serve for decision-making for AS patients awaiting aortic valve intervention.Methods and Results:Sixty-eight patients with symptomatic AS, who were referred for aortic valve intervention, were recruited...
June 28, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28636634/cardiomyopathy-development-protection-after-myocardial-infarction-in-rats-successful-competition-for-major-dihydropyridines-common-metabolite-against-captopril
#6
Katarzyna A Mitręga, Adrianna M Spałek, Jerzy Nożyński, Maurycy Porc, Magdalena Stankiewicz, Tadeusz F Krzemiński
During the last 25 years angiotensin-converting enzyme inhibitors spectacularly conquered the field of cardiovascular diseases therapy. Nevertheless, lack of new studies concerning side effects associated with their chronic administration seems to be rather confusing. In our previous research, we proved that the main furnidipines' metabolite (M-2) possess multiple cardioprotective actions. Currently, we compared effects of post-infarction long-term oral treatment with M-2 and captopril on hemodynamic parameters and "ischemic cardiomyopathy" development in rats...
2017: PloS One
https://www.readbyqxmd.com/read/28634515/transarterial-chemoembolization-using-40-%C3%A2%C2%B5m-drug-eluting-beads-for-hepatocellular-carcinoma
#7
Giorgio Greco, Tommaso Cascella, Antonio Facciorusso, Roberto Nani, Rodolfo Lanocita, Carlo Morosi, Marta Vaiani, Giuseppina Calareso, Francesca G Greco, Antonio Ragnanese, Marco A Bongini, Alfonso V Marchianò, Vincenzo Mazzaferro, Carlo Spreafico
AIM: To assess the safety and efficacy of transarterial chemoembolization (TACE) of hepatocellular carcinoma (HCC) using a new generation of 40 μm drug eluting beads in patients not eligible for curative treatment. METHODS: Drug eluting bead TACE (DEB-TACE) using a new generation of microspheres (embozene tandem, 40 μm) preloaded with 100 mg of doxorubicin was performed on 48 early or intermediate HCC patients with compensated cirrhosis. Response to therapy was assessed with Response Evaluation Criteria in Solid Tumors (RECIST) and modified RECIST (mRECIST) guidelines applied to computed tomography or magnetic resonance imaging...
May 28, 2017: World Journal of Radiology
https://www.readbyqxmd.com/read/28625165/transpulmonary-thermodilution-advantages-and-limits
#8
REVIEW
Xavier Monnet, Jean-Louis Teboul
BACKGROUND: For complex patients in the intensive care unit or in the operating room, many questions regarding their haemodynamic management cannot be answered with simple clinical examination. In particular, arterial pressure allows only a rough estimation of cardiac output. Transpulmonary thermodilution is a technique that provides a full haemodynamic assessment through cardiac output and other indices. MAIN BODY: Through the analysis of the thermodilution curve recorded at the tip of an arterial catheter after the injection of a cold bolus in the venous circulation, transpulmonary thermodilution intermittently measures cardiac output...
June 19, 2017: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/28621582/assessment-of-pulmonary-arterial-compliance-evaluated-using-harmonic-oscillator-kinematics
#9
Yasunobu Hayabuchi, Akemi Ono, Yukako Homma, Shoji Kagami
We hypothesized that KPA, a harmonic oscillator kinematics-derived spring constant parameter of the pulmonary artery pressure (PAP) profile, reflects PA compliance in pediatric patients. In this prospective study of 33 children (age range = 0.5-20 years) with various cardiac diseases, we assessed the novel parameter designated as KPA calculated using the pressure phase plane and the equation KPA = (dP/dt_max)(2)/([Pmax - Pmin])/2)(2), where dP/dt_max is the peak derivative of PAP, and Pmax - Pmin is the difference between the minimum and maximum PAP...
June 16, 2017: Pulmonary Circulation
https://www.readbyqxmd.com/read/28616241/passive-leg-raising-test-with-minimally-invasive-monitoring-the-way-forward-for-guiding-septic-shock-resuscitation
#10
Patrick M Honore, Herbert D Spapen
BACKGROUND: Swift and adequate fluid loading is a cornerstone of septic shock therapy. Yet, careful assessment of volume responsiveness and volume amount during the resuscitation process is a prerequisite. Both overzealous initial fluid administration and late fluid overload are harmful and may be associated with increased mortality. MAIN BODY: Static (i.e., central venous or pulmonary artery occlusion) pressure readings are erroneous for monitoring fluid resuscitation and should be abandoned...
2017: Journal of Intensive Care
https://www.readbyqxmd.com/read/28614095/the-value-of-dynamic-preload-variables-during-spontaneous-ventilation
#11
Azriel Perel
PURPOSE OF REVIEW: To discuss the physiological significance and clinical value of dynamic preload variables in spontaneously breathing patients. RECENT FINDINGS: Dynamic preload variables reflect the response of the cardiac output to a modification of preload and can therefore be used to assess fluid responsiveness. Continuous dynamic parameters that are calculated from the variations in the arterial and plethysmographic waveforms following a mechanical breath have been shown to predict fluid responsiveness much better than static preload parameters...
August 2017: Current Opinion in Critical Care
https://www.readbyqxmd.com/read/28604468/point-of-care-ultrasonography-to-assess-portal-vein-pulsatility-and-the-effect-of-inhaled-milrinone-and-epoprostenol-in-severe-right-ventricular-failure-a-report-of-2-cases
#12
Jan-Alexis Tremblay, William Beaubien-Souligny, Mahsa Elmi-Sarabi, Georges Desjardins, André Y Denault
This article describes 2 patients with severe acute right ventricular failure causing circulatory shock. Portal vein pulsatility assessed by bedside ultrasonography suggested clinically relevant venous congestion. Management included cardiac preload reduction and combined inhalation of milrinone and epoprostenol to reduce right ventricular afterload. Portal vein ultrasonography may be useful in assessing right ventricular function in the acutely ill patient.
June 8, 2017: A & A Case Reports
https://www.readbyqxmd.com/read/28532943/evaluation-of-preloaded-intraocular-lens-injection-systems-ex%C3%A2-vivo-study
#13
Mayank A Nanavaty, Magdalena Kubrak-Kisza
PURPOSE: To compare preloaded intraocular lens (IOL) injection systems. SETTING: Sussex Eye Hospital, Brighton, United Kingdom. DESIGN: Experimental study. METHODS: In 30 porcine eyes, 5 preloaded +22.0 diopters IOLs were implanted from each of the following preloaded IOL systems: Ultrasert (U), iTec (iT), Eyecee (E), iSert (iS), Rayone (R), and CT Lucia (CT). External and internal wound size was measured. Nozzle damage was assessed using digital photography...
April 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/28528579/phosphodiesterase-type-5-inhibition-may-reduce-diastolic-function-in-women-with-ischemia-but-no-obstructive-coronary-artery-disease
#14
Michael D Nelson, Puja K Mehta, Janet Wei, Behzad Sharif, Louise E J Thomson, Daniel Berman, Debiao Li, C Noel Bairey Merz
BACKGROUND: Ischemia, in the absence of obstructive coronary artery disease, is prevalent in women, and associated with increased risk for major cardiovascular events. Coronary microvascular dysfunction is prevalent in these patients, and associated with impaired diastolic function. Despite our general understanding, however, optimal treatment of this cohort remains elusive. METHODS: To address this knowledge gap, we performed an open-label treatment trial to assess whether phosphodiesterase type 5 inhibition improves coronary microvascular perfusion and diastolic function in women with signs and symptoms of ischemia but no evidence of obstructive coronary artery disease...
May 22, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28506136/predictors-to-intravenous-fluid-responsiveness
#15
Jorge Iván Alvarado Sánchez, William Fernando Amaya Zúñiga, Manuel Ignacio Monge García
Management with intravenous fluids can improve cardiac output in some surgical patients. Management with static preload indicators, such as central venous pressure and pulmonary artery occlusion pressure, has not demonstrated a suitable relationship with changes in the cardiac output induced by intravenous fluid therapy. Dynamic indicators, such as the variability of arterial pulse pressure or stroke volume variation, have demonstrated a suitable relationship. Since improvement in cardiac output does not guarantee an adequate perfusion pressure, in patients with hypotension, it is also necessary to know whether arterial pressure will also increase with intravenous fluid therapy...
January 1, 2017: Journal of Intensive Care Medicine
https://www.readbyqxmd.com/read/28473988/in-vitro-evaluation-of-manual-torque-values-applied-to-implant-abutment-complex-by-different-clinicians-and-abutment-screw-loosening
#16
Onur Dincer Kose, Burcin Karataslı, Sabit Demircan, Taha Emre Kose, Erhan Cene, Serhan Aydın Aya, Mehmet Ali Erdem, Abdulkadir Burak Cankaya
Preload is applied to screws manually or using a torque wrench in dental implant systems, and the preload applied must be appropriate for the purpose. The aim of this study was to assess screw loosening and bending/torsional moments applied by clinicians of various specialties following application of manual tightening torque to combinations of implants and abutments. Ten-millimeter implants of 3.7 and 4.1 mm diameters and standard or solid abutments were used. Each group contained five implant-abutment combinations...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28449710/effects-of-colloid-pre-loading-on-thromboelastography-during-elective-intracranial-tumor-surgery-in-pediatric-patients-hydroxyethyl-starch-130-0-4-versus-5-human-albumin
#17
Yuanzhi Peng, Jianer Du, Xuan Zhao, Xueyin Shi, Yingwei Wang
BACKGROUND: Volume replacement therapy with colloid is still worth studying in major pediatric surgery with potential risk of bleeding. This study assessed the effects of 6% hydroxyethyl starch (HES) 130/0.4 and 5% Human Albumin (HA) on coagulation tested by thromboelastography (TEG) during elective intracranial tumor surgery in pediatric patients. METHODS: In this randomized controlled trial, 60 patients undergoing intracranial tumor resection under general anesthesia were assigned to HES and HA groups (n = 30), and administered preloads of 20 mL · kg(-1) HES 130/0...
April 27, 2017: BMC Anesthesiology
https://www.readbyqxmd.com/read/28444075/applicability-of-respiratory-variations-in-stroke-volume-and-its-surrogates-for-dynamic-fluid-responsiveness-prediction-in-critically-ill-patients-a-systematic-review-of-the-prevalence-of-required-conditions
#18
Leandro Utino Taniguchi, Fernando Godinho Zampieri, Antonio Paulo Nassar
Objective: The present systematic review searched for published data on the prevalence of required conditions for proper assessment in critically ill patients. Methods: The Medline, Scopus and Web of Science databases were searched to identify studies that evaluated the prevalence of validated conditions for the fluid responsiveness assessment using respiratory variations in the stroke volume or another surrogate in adult critically ill patients. The primary outcome was the suitability of the fluid responsiveness evaluation...
January 2017: Revista Brasileira de Terapia Intensiva
https://www.readbyqxmd.com/read/28434968/cardiac-contractility-correction-strategies-applied-to-telemetry-data-from-a-hesi-sponsored-consortium
#19
Emmanuel Boulay, Michael K Pugsley, Vincent Jacquemet, Alain Vinet, Michael V Accardi, Maxim Soloviev, Eric Troncy, Jennifer M Doyle, Jennifer Beck Pierson, Simon Authier
INTRODUCTION: QT has a long history of heart rate (HR) correction but limited investigations have been undertaken to assess the impact of cardiovascular parameters on left ventricular (LV) contractility in drug safety testing. Cardiac contractility is affected by preload (Cyon-Frank-Starling law), afterload (Anrep effect) and HR (Bowditch effect). We evaluated multi-parameter correction methods to help with dP/dtmax interpretation. METHODOLOGY: Modeling was undertaken using data from dogs in single or double 4×4 Latin square studies...
April 20, 2017: Journal of Pharmacological and Toxicological Methods
https://www.readbyqxmd.com/read/28400680/changes-in-b-type-natriuretic-peptide-and-related-hemodynamic-parameters-following-a-fluid-challenge-in-critically-ill-patients-with-severe-sepsis-or-septic-shock
#20
Shahed Omar, Ahmad Ali, Yahya Atiya, Rudo Lufuno Mathivha, Joel M Dulhunty
CONTEXT: Severe sepsis or septic shock. AIMS: The aim of this study is to examine the effect of a fluid challenge on the B-type natriuretic peptide (BNP) and the hemodynamic state. SETTINGS AND DESIGN: This observational study was conducted in an intensivist-led academic, mixed medical-surgical Intensive Care Unit. SUBJECTS AND METHODS: Focused transthoracic echocardiogram, plasma BNP, and hemodynamic measurements were recorded at baseline and following a 500 ml fluid challenge in thirty patients...
March 2017: Indian Journal of Critical Care Medicine
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