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Noninvasive hemodynamic

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https://www.readbyqxmd.com/read/28721053/reduced-prefrontal-activation-during-verbal-fluency-task-in-chronic-insomnia-disorder-a-multichannel-near-infrared-spectroscopy-study
#1
Jing-Jing Sun, Xiao-Min Liu, Chen-Yu Shen, Xiao-Qian Zhang, Gao-Xiang Sun, Kun Feng, Bo Xu, Xia-Jin Ren, Xiang-Yun Ma, Po-Zi Liu
PURPOSE: Daytime complaints such as memory and attention deficits and failure to accomplish daily tasks are common in insomnia patients. However, objective psychological tests to detect cognitive impairment are equivocal. Neural function associated with cognitive performance may explain the discrepancy. The aim of this study was to investigate the hemodynamic response patterns of patients with chronic insomnia disorder (CID) using the noninvasive and low-cost functional neuroimaging technique of multichannel near-infrared spectroscopy (NIRS) in order to identify changes of neural function associated with cognitive performance...
2017: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/28708768/transcranial-cerebral-oxymetric-monitoring-reduces-brain-hypoxia-in-obese-and-elderly-patients-undergoing-general-anesthesia-for-laparoscopic-cholecystectomy
#2
Tomislav Ružman, Boris Mraović, Tatjana Šimurina, Danijela Gulam, Nataša Ružman, Maja Miškulin
The aims of this prospective, observational study were to evaluate the changes of the regional cerebral saturation (rSO2) measured by near-infrared spectroscopy during elective laparoscopic cholecystectomy under total intravenous anesthesia and the association between patient's characteristics and critical decline of rSO2. Hemodynamics, rSO2, and oxygen saturation were recorded in different time points: before the anesthesia (Tbas), 2 minutes after the induction (supine position) (Tind), 2 minutes after CO2 insufflation (supine) (TCO2), 10 minutes after CO2 insufflation (reverse Trendelenburg) (TrevT), and 2 minutes after deflation (supine) (Tpost)...
July 13, 2017: Surgical Laparoscopy, Endoscopy & Percutaneous Techniques
https://www.readbyqxmd.com/read/28705321/implantable-hemodynamic-monitoring-for%C3%A2-heart-failure-patients
#3
REVIEW
William T Abraham, Leor Perl
Rates of heart failure hospitalization remain unacceptably high. Such hospitalizations are associated with substantial patient, caregiver, and economic costs. Randomized controlled trials of noninvasive telemedical systems have failed to demonstrate reduced rates of hospitalization. The failure of these technologies may be due to the limitations of the signals measured. Intracardiac and pulmonary artery pressure-guided management has become a focus of hospitalization reduction in heart failure. Early studies using implantable hemodynamic monitors demonstrated the potential of pressure-based heart failure management, whereas subsequent studies confirmed the clinical utility of this approach...
July 18, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28704836/abdominal-near-infrared-spectroscopy-detects-low-mesenteric-perfusion-early-in-preterm-infants-with-hemodynamic-significant-ductus-arteriosus
#4
Ana Ledo, Marta Aguar, Antonio Núñez-Ramiro, Pilar Saénz, Máximo Vento
BACKGROUND: The therapeutic decision to close patent ductus arteriosus in preterm infants entails great uncertainty. Near-infrared spectroscopy is a noninvasive bedside technique used to monitor mixed regional oxygen saturation. We hypothesized that near-infrared spectroscopy could identify preterm infants at risk of mesenteric hypoperfusion associated with hemodynamically significant ductus arteriosus. METHODS: This is a prospective observational study including consecutively admitted preterm infants with a gestational age <32 weeks...
July 14, 2017: Neonatology
https://www.readbyqxmd.com/read/28704819/electrical-cardiometry-to-monitor-cardiac-output-in-preterm-infants-with-patent-ductus-arteriosus-a-comparison-with-echocardiography
#5
Kai-Hsiang Hsu, Tai-Wei Wu, I-Hsyuan Wu, Mei-Yin Lai, Shih-Yun Hsu, Hsiao-Wen Huang, Tze-Yee Mok, Reyin Lien
BACKGROUND: Electrical cardiometry (EC) is an impedance-based monitoring that provides noninvasive cardiac output (CO) assessment. Through comparison to transthoracic echocardiography (Echo), the accuracy of EC has been verified. However, left-to-right patent ductus arteriosus (PDA) shunting is a concern because PDA shunts aortic flow to the pulmonary artery and may interfere with EC in measuring CO. OBJECTIVE: To determine the agreement between EC and Echo in preterm infants with a hemodynamically significant PDA (hsPDA)...
July 14, 2017: Neonatology
https://www.readbyqxmd.com/read/28682836/a-technique-of-awake-bronchoscopic-endotracheal-intubation-for-respiratory-failure-in-patients-with-right-heart-failure-and-pulmonary-hypertension
#6
Jimmy Johannes, David A Berlin, Parimal Patel, Edward J Schenck, Frances Mae West, Rajan Saggar, Igor Z Barjaktarevic
OBJECTIVE: Patients with pulmonary hypertension and right heart failure have a high risk of clinical deterioration and death during or soon after endotracheal intubation. The effects of sedation, hypoxia, hypoventilation, and changes in intrathoracic pressure can lead to severe hemodynamic instability. In search for safer approach to endotracheal intubation in this cohort of patients, we evaluate the safety and feasibility of an alternative intubation technique. DATA SOURCES: Retrospective data analysis...
July 4, 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/28682030/-hemodialysis-and-cardiovascular-outcome
#7
Laura Panicali, Fabiana Brigante, Elena Mancini
Hemodialysis patients often present multiple comorbidities and have a high mortality rate (15-20% per year), mostly due to cardiovascular events. Besides predisposing pathological conditions related to uremia (heart failure, coronary heart disease, left ventricular hypertrophy, arrhythmias), they also have specific risk factors linked to the hemodialysis (HD) treatment in itself: chronic inflammation, fluid overload, autonomic nervous system dysfunction, arterovenous fistula. These factors may affect the hemodynamic compensatory systems (vascular refilling, arteriolar and venous tone, autonomic nervous system response) to fluid removal, with high risk of intra-dialysis hypotension (IDH) episodes or arrhythmic events...
March 2017: Giornale Italiano di Nefrologia: Organo Ufficiale Della Società Italiana di Nefrologia
https://www.readbyqxmd.com/read/28671932/associations-of-exercise-tolerance-with-hemodynamic-parameters-for-pulmonary-arterial-hypertension-and-for-chronic-thromboembolic-pulmonary-hypertension
#8
Yasunori Tsuboi, Hidekazu Tanaka, Ryo Nishio, Takuma Sawa, Daisuke Terashita, Kazuhiko Nakayama, Seimi Satomi-Kobayashi, Yoshitada Sakai, Noriaki Emoto, Ken-Ichi Hirata
PURPOSE: Pulmonary arterial hypertension (PAH) and chronic thromboembolic pulmonary hypertension (CTEPH) are the main subgroups of pulmonary hypertension (PH). Despite differences in their etiologies, both diseases are characterized by vascular remodeling, resulting in progressive right heart failure. Noninvasive periodic evaluation of exercise tolerance has become increasingly important. Cardiopulmonary exercise testing (CPET) and a 6-minute walk test (6MWT) are now both recommended for evaluating exercise tolerance, but there is insufficient knowledge about possible differences in the associations of exercise tolerance with right heart catheterization (RHC) data for patients with PAH and CTEPH...
June 30, 2017: Journal of Cardiopulmonary Rehabilitation and Prevention
https://www.readbyqxmd.com/read/28666576/assessment-of-coronary-artery-aneurysms-caused-by-kawasaki-disease-using-transluminal-attenuation-gradient-analysis-of-computerized-tomography-angiograms
#9
Noelia Grande Gutierrez, Olga Shirinsky, Nina Gagarina, Galina Lyskina, Ryuji Fukazawa, Shunichi Ogawa, Jane C Burns, Alison L Marsden, Andrew M Kahn
Patients with coronary artery aneurysms (CAAs) resulting from Kawasaki disease (KD) are at risk for thrombosis and myocardial infarction. Current guidelines recommend CAA diameter ≥8 mm as the criterion for initiating systemic anticoagulation. Transluminal attenuation gradient (TAG) analysis has been proposed as a noninvasive method for evaluating functional significance of coronary stenoses using computerized tomography angiography (CTA), but has not previously been used in CAA. We hypothesized that abnormal hemodynamics in CAA caused by KD could be quantified using TAG analysis...
May 30, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28650932/incremental-value-of-right-atrial-strain-for-early-diagnosis-of-hemodynamic-deterioration-in-pulmonary-hypertension-a-new-noninvasive-tool-for-a-more-comprehensive-diagnostic-paradigma
#10
Cristina Piccinino, Ailia Giubertoni, Jacopo Zanaboni, Miriam Gravellone, Daniele Sola, Roberta Rosso, Lorena Ferrarotti, Paolo Nicola Marino
AIMS: Increased right atrial size is related to adverse prognosis in pulmonary hypertension. The potential incremental value of right atrial function assessment is still unclear. We tested the relationship between right atrial two-dimensional speckle-tracking echocardiography impairment and hemodynamic, functional and clinical deterioration in patients with pulmonary hypertension. METHODS: We prospectively evaluated 36 patients (27 female, 9 male; mean age 68 ± 13 years) with suspected pulmonary hypertension undergoing right heart catheterization and 16 matched controls...
June 24, 2017: Journal of Cardiovascular Medicine
https://www.readbyqxmd.com/read/28631765/-noninvasive-ventilation-and-sedation-evidence-and-practical-tools-for-its-utilization
#11
Ilaria Battistoni, Marco Marini, Giorgio Caretta, Fabio Vagnarelli, Fabiana Lucà, Emilia Biscottini, Alberto Lavorgna, Vincenza Procaccini, Letizia Riva, Gabriele Vianello, Nadia Aspromonte, Massimo Iacoviello, Renata De Maria, Serafina Valente, Michele Massimo Gulizia
Noninvasive ventilation (NIV) has gained increased acceptance inside the critical area, since it has been shown to be effective in reducing or avoiding the need for oro-tracheal intubation. NIV efficacy is dependent on the selection of the appropriate patients and on their compliance to therapy. Actually, full collaboration is not easily reached especially in agitated patients.Sedation during NIV is useful to reduce the rate of treatment failure, but robust data to guide the development of best practice are limited and sometimes local customs appear to exert a strong influence on patterns of care...
June 2017: Giornale Italiano di Cardiologia
https://www.readbyqxmd.com/read/28631764/-hemodynamic-effects-of-positive-end-expiratory-pressure
#12
Marco Marini, Giorgio Caretta, Fabio Vagnarelli, Fabiana Lucà, Emilia Biscottini, Alberto Lavorgna, Vincenza Procaccini, Letizia Riva, Gabriele Vianello, Nadia Aspromonte, Andrea Mortara, Renata De Maria, Piera Capasso, Serafina Valente, Michele Massimo Gulizia
The application of a positive end-expiratory pressure (PEEP), the cornerstone of noninvasive ventilation (NIV), causes hemodynamic changes in the cardiovascular system. To understand the benefits of NIV it is necessary to resume concepts of cardiovascular physiology and pathophysiology about cardiac function determinants, venous return, ventricular interdependence and heart-lung interaction, and to understand how PEEP interacts with them. The hemodynamic effects of PEEP are mediated by the increase in transpulmonary pressure, which results in increased pulmonary vascular resistance and in an attending small reduction of venous return in conditions of euvolemia, in a substantial reduction of left ventricular afterload and a potential positive effect on left ventricular stroke volume...
June 2017: Giornale Italiano di Cardiologia
https://www.readbyqxmd.com/read/28622156/aerobic-versus-isometric-handgrip-exercise-in-hypertension-a-randomized-controlled-trial
#13
Nikolaos Pagonas, Stergios Vlatsas, Frederic Bauer, Felix S Seibert, Walter Zidek, Nina Babel, Peter Schlattmann, Timm H Westhoff
OBJECTIVES: Aerobic dynamic exercise reduces blood pressure (BP) and is broadly recommended by current American and European hypertension guidelines. Isometric exercise is currently not recommended, since data from only a few studies are available. We compare for the first time the effects of isometric handgrip training and aerobic exercise in a randomized controlled trial. METHODS: A total of 75 hypertensive patients were randomized to one of the following 12-week programmes: Isometric handgrip training five times weekly (two contractions of 2 min at 30% of maximal power with each arm); 'Sham-handgrip training' five times weekly (two contractions of 2 min at 5% of maximal power with each arm); Aerobic exercise training of 30 min three to five times per week...
June 15, 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/28617162/the-use-of-stroke-volume-variation-to-guide-donor-management-is-associated-with-increased-organs-transplanted-per-donor
#14
Benjamin Bergstrom, J Salvador de la Cruz, Mitch Sally, Scott Louis, Melissa Friedman, Floyd Petersen, Darren Malinoski
BACKGROUND: There is a national shortage of organs available for transplantation, and utilization rates for thoracic organs are less than 40%. In addition, the optimal method of assessing cardiovascular status during donor management is uncertain. FloTrac is a noninvasive hemodynamic technique that measures cardiac output and fluid responsiveness. Our objective was to measure the impact of using this technique to guide management on fluid balance, vasopressor usage, thyroid hormone usage, and pulmonary function...
June 2017: Progress in Transplantation
https://www.readbyqxmd.com/read/28614837/renal-oxygenation-and-hemodynamics-in-kidney-injury
#15
Alexander Bullen, Zhi Zhao Liu, Mark Hepokoski, Ying Li, Prabhleen Singh
Acute kidney injury (AKI) continues to be a major therapeutic challenge. Despite significant advances made in cellular and molecular pathophysiology of AKI, major gaps in knowledge exist regarding the changes in renal hemodynamics and oxygenation in the early stages and through the continuum of AKI. Particular features of renal hemodynamics and oxygenation increase the susceptibility of the kidney to sustain injury due to oxygen demand-supply mismatch and also play an important role in the recovery and repair from AKI as well as the transition of AKI to chronic kidney disease...
June 15, 2017: Nephron
https://www.readbyqxmd.com/read/28612302/a-simplified-lung-ultrasound-approach-to-detect-increased-extravascular-lung-water-in-critically-ill-patients
#16
Antonio Anile, Jole Russo, Giacomo Castiglione, Giovanni Volpicelli
BACKGROUND: The quantification of B-lines at lung ultrasonography is a valid tool to estimate the extravascular lung water (EVLW) in patients after major cardiac surgery. However, there is still uncertainty about the correlation between B-lines and EVLW in a general population of critically ill. AIM: To evaluate a simplified lung ultrasonographic assessment as a tool to estimate the EVLW in critically ill patients admitted to a polyvalent intensive care unit (ICU)...
December 2017: Critical Ultrasound Journal
https://www.readbyqxmd.com/read/28604571/hvad-waveform-analysis-as-a-noninvasive-marker-of-pulmonary-capillary-wedge-pressure-a-first-step-toward-the-development-of-a-smart-left-ventricular-assist-device-pump
#17
Jonathan Grinstein, Daniel Rodgers, Sara Kalantari, Gabriel Sayer, Gene H Kim, Nitasha Sarswat, Sirtaz Adatya, Takeyoshi Ota, Valluvan Jeevanandam, Daniel Burkhoff, Nir Uriel
Flow waveforms are an important feature of the HVAD left ventricular assist device (LVAD) that provides information about HVAD function and patient hemodynamics. We assessed the properties of one specific aspect of the waveform, the slope of the ventricular filling phase (VFP), and its correlation with pulmonary capillary wedge pressure (PCWP). A total of 101 screenshots from the HVAD monitor and simultaneous hemodynamic measurements were obtained simultaneously during sequential stages of invasive hemodynamic ramp studies...
June 7, 2017: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/28603219/central-hemodynamics-for-management-of-arteriosclerotic-diseases
#18
Junichiro Hashimoto
Arteriosclerosis, particularly aortosclerosis, is the most critical risk factor associated with cardiovascular, cerebrovascular, and renal diseases. The pulsatile hemodynamics in the central aorta consists of blood pressure, flow, and stiffness and substantially differs from the peripheral hemodynamics in muscular arteries. Arteriosclerotic changes with age appear earlier in the elastic aorta, and age-dependent increases in central pulse pressure are more marked than those apparent from brachial pressure measurement...
June 10, 2017: Journal of Atherosclerosis and Thrombosis
https://www.readbyqxmd.com/read/28601121/relationship-between-subendocardial-viability-ratio-and-hemoglobin-in-patients-with-chronic-kidney-disease
#19
Robert Ekart, Sebastjan Bevc, Nina Hojs, Tina Stropnik Galuf, Martin Hren, Benjamin Dvoršak, Maša Knehtl, Eva Jakopin, Igor Krajnc, Radovan Hojs
AIMS: Pulse wave analysis (PWA) uses the technique of applanation tonometry to obtain a peripheral pulse pressure waveform from which central hemodynamic information is derived. Using PWA, subendocardial viability ratio (SEVR) can be measured. SEVR represents a noninvasive measure of myocardial perfusion. It is related to the work of the heart, the oxygen consumption, and the energy supply of the heart. Anemia is a common complication of chronic kidney disease (CKD). A complex relationship exists between CKD, cardiovascular disease (CVD), and anemia...
2017: Clinical Nephrology
https://www.readbyqxmd.com/read/28600087/invasive-hemodynamics-of-valvular-heart-disease
#20
REVIEW
Michele Pighi, Anita W Asgar
In the current era, diagnosis and follow-up of valvular heart disease is performed noninvasively using echocardiography. In some cases, the results of echocardiographic evaluation are inconclusive or discrepant with the patient's clinical symptoms. In such cases, a well-planned and executed cardiac catheterization is invaluable to clarify the clinical dilemma and assist in planning further management. This article reviews the indications, technique, and interpretation of cardiac catheterization in the setting of valvular stenosis and regurgitation...
July 2017: Interventional cardiology clinics
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