Study hemodynamics. Medical search. Frequent questions

Cerebral hemodynamics reflect cognitive processes and underlying physiological processes, both of which are captured by functional near infrared spectroscopy (fNIRS). (frontiersin.org)
Temporal variations in the concentration of these species can therefore reveal the cerebral hemodynamics of functional brain activity. (frontiersin.org)
In this feasibility study, we evaluated the utility of functional near infrared spectroscopy (fNIRS) in measuring cerebral hemodynamics in the prefrontal cortex (PFC) in toddlers between 18 and 36 months of age. (nih.gov)
Transcranial Doppler characterizes cerebral hemodynamics in real time, but limited data exist on its interpretation in ECMO. (johnshopkins.edu)
HERALD (Hopkins Exploration, Research, and Advancement in Life support Devices) Investigators 2023, ' Characterization of Cerebral Hemodynamics with TCD in Patients Undergoing VA-ECMO and VV-ECMO: a Prospective Observational Study ', Neurocritical care , vol. 38, no. 2, pp. 407-413. (johnshopkins.edu)
Non invasive monitoring of cerebral hemodynamics using near infrared spectroscopy. (spiedigitallibrary.org)

The purpose of this study was to explore the hepatic function reserve and its relationship with the hepatic hemodynamics in a rabbit model of liver fibrosis using Doppler ultrasound. (biomedcentral.com)
Hepatic function reserve closely relates to the hepatic hemodynamics in the rabbit model of liver fibrosis. (biomedcentral.com)
Scholars@Duke publication: Magnetic resonance imaging and hepatic hemodynamics: correlation with metabolic function in liver transplantation candidates. (duke.edu)
METHODS: To examine the role of MRI-derived indexes of hepatic hemodynamics in the preoperative assessment of liver function, 39 consecutive liver transplantation candidates were studied in a prospective manner. (duke.edu)

Type 2 diabetes (T2D) is associated with dementia, and abnormal blood pressure (BP), aortic stiffness, and haemodynamics. (atlantis-press.com)
BP, aortic stiffness and altered haemodynamics contribute to early cognitive change and loss of white matter integrity in T2D. (atlantis-press.com)
Johansson M, Fedorowski A, Jordan J, Engström G, Nilsson PM, Hamrefors V. Orthostatic blood pressure adaptations, aortic stiffness, and central hemodynamics in the general population: insights from the Malmö Offspring Study (MOS). (lu.se)

Does the difference in realistic waveform before and after stenting affect hemodynamics in stenosed coronary artery? (imperial.ac.uk)
The aim of this case-control study was to examine the effect of music on the levels of anxiety, stress, and depression experienced by patients undergoing coronary angiography, as measured by the 21-item Depression Anxiety Stress Scales. (who.int)
and noninvasive nursing intervention [ 2 ] to reduce stress and anxiety in patients under- Study design going coronary angiography. (who.int)
The study sample was patients who were working field into an increasingly evidence- scheduled for coronary angiography at a based treatment for various diseases [ 4 ]. (who.int)

Anatomy and physiology are closely related fields of study: anatomy, the study of form, and physiology, the study of function, are intrinsically tied and are studied in tandem as part of a medical curriculum. (news-medical.net)

Some of the methods used to study the hemodynamics of aortic flow are patient scans, computational fluid dynamics models, and particle tracking velocimetry (PTV). (wikipedia.org)
The purpose of this study was to determine the feasibility, relation to other methods and significance of the effective regurgitant orifice area measurement. (nih.gov)
Methods: This was a prospective cohort study at a tertiary care center. (johnshopkins.edu)
Materials and Methods: In a prospective case-control study carried out in the Department of Radio-diagnosis SSG hospital, Vadodara between April 2016 to November 2016 on an outpatient basis, 100 subjects with previous 4-6 hours of fasting were assessed by senior radiologists with many years of experience in the field of abdominal sonography and Doppler on a Mylab-40 ultrasound machineusing a low frequency, 3-5 MHz convex transducer. (journalcra.com)
Materials and Methods: We studied 64 patients with erectile dysfunction who responded well to intracavernous injection of 10 μg. (ewha.ac.kr)
Thus the two complementary and interconnected domains are covered, so be it the solid mechanics (to obtain analytic relations between the strains and the deformations, using either linear or non-linear theories) and the fluid mechanics (to study the discharge of the blood considering a particular deformable pipe, using finite volume methods). (witpress.com)
Considering that this enables a better understanding of what Deep Learning models can be useful to apply to specific medical datasets, our case study leverages the three data science methods Gated Recurrent Units, one-dimensional convolutional layers, and their combination. (researchgate.net)

The effects of a pulmonary bypass in nine dogs were studied. (unboundmedicine.com)
It is also hypothesized that steroids may improve pulmonary hemodynamics. (aafp.org)
Effects of flexible fiber-optic bronchoscopy on haemodynamics and pulmonary mechanics in mechanically ventilated children in pediatric intensive careâ? (who.int)

Aim: To evaluate the hemodynamics of portal vein in patients with non-alcoholic fatty liver disease (NAFLD) with help of Doppler sonography. (journalcra.com)
They were examined with help of Gray-scale and Doppler (color and spectral wave) sonography for evaluating the hemodynamics of the main portal vein. (journalcra.com)
The use of gray and color Doppler US in diagnosis and staging of chronic liver disease is based on the hypothesis that alteration of liver parenchyma and hemodynamics may reflect indirectly the histological alterations. (biomedcentral.com)

Aneurysm growth occurs at region of low wall shear stress: patient-specific correlation of hemodynamics and growth in a longitudinal study. (insa-lyon.fr)

Reduced-order modeling of light transport in tissue for real-time monitoring of brain hemodynamics using diffuse optical tomography. (whiterose.ac.uk)
The applicability of the approach for real-time monitoring of brain hemodynamics is demonstrated through a hypercapnic experiment. (whiterose.ac.uk)
We aimed to study the contribution of such factors to brain structure and cognition, relative to the contribution of metabolic factors in T2D such as insulin resistance and adiposity, in older people with T2D. (atlantis-press.com)
Measurements included neuropsychological battery, brain MRI, and Mobil-o-Graph-derived (IEM, Germany) aortic BP and haemodynamics. (atlantis-press.com)
We studied associations of exposure variables with outcomes using structural equation modelling for cognition, and simple linear regression for brain structure, using standardised coefficients to determine relative contribution of variables to the outcomes in combined regression models. (atlantis-press.com)
Computed tomography (CT) scanning and MRI studies of the brain may be important in ruling out intracranial lesions when the diagnosis of hepatic encephalopathy is in question. (medscape.com)

Such changes in arterial wall structure may significantly alter arterial wall mechanical properties, and thus cause abnormal arterial haemodynamics. (bmj.com)
To test the hypothesis that after repair of TOF, there are abnormal arterial haemodynamics which are associated with aortic dilatation and which increased after load on the left ventricle. (bmj.com)
These results indicating abnormal arterial haemodynamics after TOF repair highlight the importance of regular monitoring of the systemic arterial bed and potentially relevant cardiovascular events in long-term follow-up of TOF. (bmj.com)

This study may provide an opportunity to standardize the indication for BVF, the optimal technique, and the postprocedural management," Santiago Garcia, MD, concluded in a late-breaking session at the recent Transcatheter Cardiovascular Therapeutics meeting in Boston. (medscape.com)
We aimed to investigate such cardiovascular proteins and their relationship to haemodynamics before and 1 year after heart transplantation (HT), as well as their prognostic value in advanced HF with PH. (lu.se)

The aim of this study was to develop an in vivo model that enables visualization of vascular regenerating mechanisms by intravital microscopy techniques in collateral arteriolar flap vascularity. (uzh.ch)
CONCLUSIONS: Present intravital microscopy techniques offer unique opportunities to study structural changes and hemodynamic effects of vascular regeneration in this extended axial pattern flap model. (uzh.ch)
Jujic A, Engström G, Nilsson PM, Johansson M. Accumulation of advanced glycation end products in skin and increased vascular ageing in the general population: the Malmö Offspring Study. (lu.se)

Artem A. Badarin , Viktoriia V. Skazkina , and Vadim V. Grubov "Studying of human's mental state during visual information processing with combined EEG and fNIRS", Proc. (spiedigitallibrary.org)

Current BVF experience, however, is limited to small observational studies at selected sites, leaving gaps in knowledge regarding patient selection, optimal timing in relationship to the procedure, and how to define success, said Garcia, an interventional cardiologist at The Christ Hospital in Cincinnati, Ohio. (medscape.com)

Exercise haemodynamics were evaluated in 169 consecutive subjects with normal resting mPAP ≤20 mmHg. (ersjournals.com)

The Effects of Labor Epidural Analgesia on Maternal and Fetal Hemodynamics: A Prospective Observation Study. (bvsalud.org)
This study aimed to investigate the effect of epidural analgesia (EA) on maternal and fetal hemodynamics . (bvsalud.org)
[ 6 ] In another study, thoracic paravertebral blockade resulted in more stable hemodynamics and equivalent analgesia when compared to thoracic epidural analgesia in thorocotomy patients. (medscape.com)
NEW YORK (Reuters Health) - Continuous cervical epidural block might be an effective treatment for intractable hiccups, hints an observational study from South Korea. (medscape.com)
The biggest limitation of the study is that while the patients were receiving a bolus/continuous epidural infusion, they were also undergoing other treatments (not defined) designed at addressing the causative factors for the hiccups," noted Dr. Christiansen, who was not involved in the study. (medscape.com)
If the study would be repeated, I would suggest that the researcher consider randomizing the patients into two groups: group 1 gets the epidural bolus/infusion while group 2 gets treatment for their causative factors. (medscape.com)
Ultimately, I think this study tested an interesting idea, but the design of the study does not allow us to conclude whether the epidural bolus/infusion was actually the reason for success and further studies would need to be completed," Dr. Christiansen concluded. (medscape.com)

Recent histological studies of the aortic wall of patients with tetralogy of Fallot (TOF) have shown massive degeneration of the tunica media of the aorta. (bmj.com)

The aim of this study was to evaluate the effect of dexmedetomidine infusion on hemodynamic response to critical incidences such as laryngoscopy, endotracheal intubation, creation of pneumoperitoneum and extubation in patients undergoing elective laparoscopic surgeries. (anesthesiologypaper.com)
It is unclear if hemodynamics in HF patients with DM differ from those of non-diabetic patients and how this might influence outcome. (ku.dk)
This study aims to discover the impact of DM on hemodynamics in HF patients. (ku.dk)
The patients were adults on venoarterial ECMO or venovenous ECMO undergoing TCD studies. (johnshopkins.edu)
A cross-sectional study was conducted on 75 patients with HFpEF. (karger.com)
According to a recent study, only 10% of patients with PARDS receive prone positioning. (springer.com)
We validate our approach using the open MIMIC-III database in a case study that assists in understanding, diagnosing, and treating a specific condition that affects Intensive Care Unit patients, namely Acute Respiratory Distress Syndrome. (researchgate.net)
The current study involved 2975 patients who underwent ViV TAVR with the Sapien 3 or Sapien 3 Ultra valves from December 2020 to March 2022 in the Society of Thoracic Surgeons TVT registry. (medscape.com)
Right heart catheterization was used to measure the haemodynamics of the HF patients pre-operatively and at 1 year follow-up after HT. (lu.se)
Mer and Richards report data from a combined retrospective and prospective study of 15 patients admitted to the intensive care unit with varicella pneumonia. (aafp.org)
The team reviewed records of patients with a history of unsuccessful treatments for hiccups from 2008 to 2014, and they included 28 patients with intractable hiccups and a history of unsuccessful medical treatment with gabapentin and baclofen in the study. (medscape.com)
There is no information provided about changes in hemodynamics in these patients while they were receiving the infusion/bolus. (medscape.com)
While the paper states that there were no adverse events reported, I wonder how many patients required a 'hemodynamic intervention' in order to safely complete the study. (medscape.com)
L'objectif de cette étude cas/témoins était d'examiner les effets de la musique sur les niveaux d'anxiété, de stress et de dépression ressentis par les patients subissant une angiographie coronarienne, en les mesurant à l'aide de l'échelle DASS ( Depression Anxiety Stress Scales ) composée de 21 items. (who.int)

Previous physiological studies of the giraffe have concentrated on arterial blood pressures in the heart and neck 1-3 . (nature.com)
We show that our results agree with the expected physiological changes and with results of a similar experimental study. (whiterose.ac.uk)
The study was conducted as a randomized cal and physiological illnesses [ 3 ]. (who.int)

The purpose of this study was to evaluate the impact of stent design on wall shear stress (WSS), time average WSS, and WSS gradient (WSSG), in idealized stent geometries using computational fluid dynamics. (researchgate.net)
The purpose of this study is to evaluate the feasibility and effectiveness of prone position ventilation in infants who develop postoperative acute lung injury after surgery for congenital heart disease. (springer.com)
This study was done to evaluate the hemodynamic effects of a pumpless implantable extracorporeal membrane oxygenation (ECMO) circuit between the right ventricle (RV) and left atrium (LA) in a chronic canine model with an RV pressure overload. (unboundmedicine.com)

Although maternal MAP, HR, and SPO2 significantly decreased after EA, fetal hemodynamics remained relatively stable. (bvsalud.org)

This study is one such attempt to understand the effects of radiographic contrast media on the hemodynamic factors and also to report the most common complications. (radiologypaper.com)

Intentionally fracturing the stent frame permits further expansion of the surgical valve and improves hemodynamics. (medscape.com)
In terms of hemodynamics, aortic valve area at discharge increased significantly with BVF vs without (1.6 vs 1.4 cm 2 ), starting from 0.8 cm 2 at baseline in both groups. (medscape.com)

This scoping review aimed to map evidence on açai supplementation combined with exercise in animal and/or human experimental studies. (bvsalud.org)

Cross-sectional sample with T2D in the Cognition and Diabetes in Older Tasmanians-Blood Pressure (CDOT-BP) study. (atlantis-press.com)

The objective of the research presented in this paper is to study and simulate the discharge of the blood in the brachial artery. (witpress.com)

In January 2001, a pilot study comparing the echocardiograms of residents of Vieques and Ponce, Puerto Rico reported substantial valvular abnormalities and pericardial thickening in a large proportion of Vieques residents - findings not seen among Ponce residents. (cdc.gov)
This study sought to overcome methodological problems (e.g., sampling frame, lack of blinding) in the earlier pilot study. (cdc.gov)

There is a paucity of high-quality studies investigating the effects of prone position ventilation after pediatric cardiac surgery. (springer.com)
To study the effects of changes in haemodynamics and lung mechanics on post Flexible fiberoptic Bronchoscopy management of child. (who.int)

Local hemodynamics worsened with luminal protrusion of the stent and with stent malapposition, adverse high WSS and WSSG were identified around peak flow and throughout the cardiac cycle respectively. (researchgate.net)
Systemic arterial haemodynamics were investigated by measuring aortic input impedance during cardiac catheterisation. (bmj.com)
Concurrent with this request, the Ponce School of Medicine (PSM), led by President and Dean Dr. Manuel Martínez Maldonado, had begun a more definitive study of possible cardiac abnormalities among Vieques residents. (cdc.gov)

Failure rate may be lower with ultrasound, but this has not been studied. (medscape.com)

Giovanni Borelli (1608-1679), which is seen by many as the father of bioengineering, studied the contraction of the heart and its interaction with the arteries, where he understood the capacitive effect of the elastic arteries on smoothing the flow of blood (now known as the Windkessel effect to be later discussed). (scirp.org)

This study will investigate the feasibility and effectiveness of prone position ventilation techniques in children who develop postoperative acute lung injury after surgery for congenital heart disease. (springer.com)
The White House asked the Department of Health and Human Services to investigate the issues raised by the study. (cdc.gov)

This information may serve to aid in interpreting assessments in risk models, epidemiologic studies, and development of occupational exposure limits, relating to health effect endpoints identified in toxicological studies considering similar instruments evaluated in this study. (cdc.gov)

Pharmacological study of the new mucolytic drug N-guanyl-cysteine. (curehunter.com)

Future studies of mouse aortic arch haemodynamics PX-478 should avoid the use of idealized inflow velocity profiles. (sykinhibitors.com)
Results show that the obtained turbulent velocity fields yield universal characteristics similar to previous studies. (inderscience.com)

A parameter study was conducted to quantifydrainage characteristics in terms of ﬂow rate distribution across the holes wheninput variables of ﬂow rate, modelled ﬂuid, and hematocrit were altered. (kth.se)

Therefore, Euler's pioneering and seminal work in the area of blood flow justifies he be called the father of hemodynamics. (scirp.org)
Detailed numerical studies of two blood pumps anda lighthouse tip drainage cannula were undertaken to characterize the ﬂowstructures in diﬀerent scenarios and their link to platelet activation. (kth.se)

Art, dance and This study was a randomized controlled tri- music therapy are becoming an important al with a pre-intervention-post-intervention part of complementary medicine. (who.int)

Summary of the main study findings. (ersjournals.com)
However, cautious interpretation and external validation is necessary for these findings with a multicenter study with a larger sample size. (johnshopkins.edu)
In line with previous studies, our findings additionally confirm that ADM may be a marker of venous congestion in HF. (lu.se)

Dr. Sandy Christiansen, an assistant professor of anesthesiology and perioperative medicine at the Oregon Health & Science University (OHSU) School of Medicine in Portland, told Reuters Health by email, "While the study is interesting in its approach to intractable hiccups, unfortunately, I do not believe it warrants change in clinical practice without further exploration. (medscape.com)

Dr. Christiansen suggested a design for a possible future study. (medscape.com)

This report was prepared by Eastern Research Group, Inc. (ERG), a contractor to the Agency for Toxic Substances and Disease Registry (ATSDR), as a general record of discussion for the expert panel review meeting on the Vieques Heart Study. (cdc.gov)

These data show that MRI-derived indexes of portal hemodynamics and hepatic mass (1) correlate well with biochemical indexes of hepatic dysfunction and (2) serve as anatomic and hemodynamic correlates to Child's functional classification. (duke.edu)
Since this is the first published data on the use of steroids in the management of varicella pneumonia, the authors believe that their study should form the basis of a randomized controlled trial. (aafp.org)
Malmö Offspring Study har sedan starten 2013 insamlat stora mängder data. (lu.se)

Anatomy35

Organisms8

Diseases32

Chemicals and Drugs57

Analytical, Diagnostic and Therapeutic Techniques and Equipment65

Psychiatry and Psychology1

Phenomena and Processes62

Disciplines and Occupations1

Anthropology, Education, Sociology and Social Phenomena2

Technology, Industry, Agriculture1

Information Science3

Health Care7

Cerebral hemodynamics6

Hepatic hemodynamics4

Aortic stiffness3

Coronary4

Physiology1

Methods7

Pulmonary3

Doppler3

Correlation1

Brain6

Abnormal3

Cardiovascular2

Vascular3

FNIRS1

Observational Studies1

Consecutive1

Epidural7

Histological1

Patients14

Physiological3

Evaluate3

Stable1

Complications1

Valve2

Exercise1

Diabetes1

Discharge1

Pilot study2

Effects2

Cardiac3

Ultrasound1

Interaction1

Investigate2

Exposure1

Pharmacological1

Velocity2

Characteristics1

Blood2

Intervention1

Findings3

Practice1

Design1

Heart1

Data3