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non invasive hemodynamic monitoring

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https://www.readbyqxmd.com/read/29661193/simulation-of-phase-contrast-angiography-for-renal-arterial-models
#1
Artur Klepaczko, Piotr Szczypiński, Michał Strzelecki, Ludomir Stefańczyk
BACKGROUND: With the development of versatile magnetic resonance acquisition techniques there arises a need for more advanced imaging simulation tools to enable adequate image appearance prediction, measurement sequence design and testing thereof. Recently, there is a growing interest in phase contrast angiography (PCA) sequence due to the capabilities of blood flow quantification that it offers. Moreover, as it is a non-contrast enhanced protocol, it has become an attractive option in areas, where usage of invasive contrast agents is not indifferent for the imaged tissue...
April 16, 2018: Biomedical Engineering Online
https://www.readbyqxmd.com/read/29607557/maternal-hemodynamics-fetal-biometry-and-dopplers-in-pregnancies-followed-up-for-suspected-fetal-growth-restriction
#2
Llinos A Roberts, Hua Zen Ling, Liona Poon, Kypros H Nicolaides, Nikos A Kametas
OBJECTIVES: To assess whether in a cohort of patients with small for gestational age (SGA) foetuses with estimated fetal weight ≤10th percentile, maternal hemodynamics, fetal biometry and Dopplers at presentation, can predict the subsequent development of abnormal fetal Dopplers or delivery with birthweight <3rd percentile. METHODS: The study population comprised of 86 singleton pregnancies with SGA fetuses presenting at a median gestational age of 32 (range 26-35) weeks...
April 1, 2018: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/29602588/-transesophageal-echocardiography-in-perioperative-period-guiding-the-decision-making-during-hemodynamic-instability-due-to-atrial-fibrillation
#3
João Paulo Jordão Pontes, Aline Tonin Dos Santos, Marcello Fonseca Salgado Filho
BACKGROUND AND OBJECTIVE: Atrial fibrillation is the most common cardiac arrhythmia, which may occur during the perioperative period and lead to hemodynamic instability due to loss of atrial systolic function. During atrial fibrillation management, electrical cardioversion is one of the therapeutic options in the presence of hemodynamic instability; however, it exposes the patient to thromboembolic event risks. Transesophageal echocardiography is a diagnostic tool for thrombi in the left atrium and left atrial appendage with high sensitivity and specificity, allowing early and safe cardioversion...
March 27, 2018: Revista Brasileira de Anestesiologia
https://www.readbyqxmd.com/read/29593185/effectiveness-of-using-non-invasive-continuous-arterial-pressure-monitoring-with-clearsight-in-hemodynamic-monitoring-during-living-renal-transplantation-in-a-recipient-a-case-report
#4
Nami Kakuta, Yasuo M Tsutsumi, Chiaki Murakami, Yoko Sakai, Takuro Oyama, Asuka Kasai, Katsuyoshi Kume, Katsuya Tanaka
We investigated the effectiveness of the ClearSight system for hemodynamic management during kidney transplantation for a recipient. The recipient was to receive a kidney transplant from his mother under general anesthesia. We used continuous noninvasive finger-cuff-based monitoring of blood pressure, provided by the ClearSight system, and stroke volume variation to predict fluid responsiveness. We used of a balanced anesthetic technique and stringent monitoring standards to ensure a successful outcome for the patient...
2018: Journal of Medical Investigation: JMI
https://www.readbyqxmd.com/read/29587655/impedance-cardiography-as-tool-for-continuous-hemodynamic-monitoring-during-cesarean-section-randomized-prospective-double-blind-study
#5
Alessandro D'Ambrosio, Antonella Cotoia, Renata Beck, Potito Salatto, Lada Zibar, Gilda Cinnella
BACKGROUND: Impedance Cardiography (ICG) is a non-invasive tool for continuous hemodynamic monitoring. Aims of our study were to assess the utility of ICG to evaluate the hemodynamic impact of 6 mg (GL6) vs 8 mg (GL8) levobupivacaine combined with fentanyl in healthy patients undergoing elective cesarean section; secondary, to compare the duration and quality of analgesia and anesthesia. METHODS: Sixty-two women receiving combined spinal-epidural (CSE) for elective cesarean delivery were randomly allocated to GL6 or GL8 groups...
March 27, 2018: BMC Anesthesiology
https://www.readbyqxmd.com/read/29559063/early-craniectomy-improves-intracranial-and-cerebral-perfusion-pressure-after-severe-traumatic-brain-injury
#6
Casey J Allen, Daniel J Baldor, Mena M Hanna, Nicholas Namias, M Ross Bullock, Jonathan R Jagid, Kenneth G Proctor
After traumatic brain injury, decompressive craniectomy (DC) is a second-tier, late therapy for refractory intracranial hypertension. We hypothesize that early DC, based on CT evidence of intracranial hypertension, improves intracranial pressure (ICP) and cerebral perfusion pressure (CPP). From September 2008 to January 2015, 286 traumatic brain injury patients requiring invasive ICP monitoring at a single Level I trauma center were reviewed. DC and non-DC patients were propensity score matched 1:1, based on demographics, hemodynamics, injury severity score (ISS), Glasgow Coma Scale (GCS), transfusion requirements, and need for vasopressor therapy...
March 1, 2018: American Surgeon
https://www.readbyqxmd.com/read/29556184/suppressing-systemic-interference-in-fnirs-monitoring-of-the-hemodynamic-cortical-response-to-motor-execution-and-imagery
#7
Shijing Wu, Jun Li, Lantian Gao, Changshui Chen, Sailing He
Hemodynamic response to motor execution (ME) and motor imagery (MI) was investigated using functional near-infrared spectroscopy (fNIRS). We used a 31 channel fNIRS system which allows non-invasive monitoring of cerebral oxygenation changes induced by cortical activation. Sixteen healthy subjects (mean-age 24.5 yeas) were recruited and the changes in concentration of hemoglobin were examined during right and left hand finger tapping tasks and kinesthetic MI. To suppress the systemic physiological interference, we developed a preprocessing procedure which prevents over-activated reporting in NIRS-SPM...
2018: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/29543186/online-angiography-image-based-ffr-assessment-during-coronary-catheterization-a-single-center-study
#8
Ran Kornowski, Hana Vaknin-Assa, Abid Assali, Gabriel Greenberg, Orna Valtzer, Ifat Lavi
OBJECTIVES: To assess the diagnostic performance of angiography-derived fractional flow reserve (FFRangio) measurements in patients with stable coronary artery disease when used online in the catheterization laboratory during routine coronary angiography. BACKGROUND: FFR, an index of the hemodynamic severity of coronary stenosis, is derived from invasive measurements using a pressure-monitoring guidewire and hyperemic stimulus. While FFR is the gold standard, it remains under-utilized...
March 15, 2018: Journal of Invasive Cardiology
https://www.readbyqxmd.com/read/29514546/efficacy-and-safety-of-peripherally-inserted-central-venous-catheters-in-acute-cardiac-care-management
#9
Fabrizio Poletti, Claudio Coccino, Davide Monolo, Paolo Crespi, Giorgio Ciccioli, Giuseppe Cordio, Giovanni Seveso, Stefano De Servi
PURPOSE: Patients admitted to cardiac intensive care unit need administration of drugs intravenously often in concomitance of therapeutic techniques such as non-invasive ventilation, continuous renal replacement therapy and intra-aortic balloon counterpulsation. Therefore, the insertion of central venous catheters provides a reliable access for delivering medications, laboratory testing and hemodynamic monitoring, but it is associated with the risk of important complications. In our study, we tested the efficacy and safety of peripherally inserted central catheters to manage cardiac intensive care...
March 1, 2018: Journal of Vascular Access
https://www.readbyqxmd.com/read/29511971/impact-of-continuous-non-invasive-blood-pressure-monitoring-on-hemodynamic-fluctuation-during-general-anesthesia-a-randomized-controlled-study
#10
Takashi Juri, Koichi Suehiro, Aya Kimura, Akira Mukai, Katsuaki Tanaka, Tokuhiro Yamada, Takashi Mori, Kiyonobu Nishikawa
This study assessed the ability of a continuous non-invasive blood pressure (BP) monitoring system to reduce intra-anesthetic hemodynamic fluctuation compared with intermittent BP cuff measurement. Forty patients undergoing total knee arthroplasty under general anesthesia were enrolled and randomly divided into two groups (Control and CS group). BP management was performed using the same protocol with BP measured by intermittent BP cuff in the Control and that by continuous non-invasive BP monitoring in the CS group...
March 6, 2018: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/29510691/a-preliminary-study-evaluating-cardiac-output-measurement-using-pressure-recording-analytical-method-pram-in-anaesthetized-dogs
#11
Angela Briganti, Flavia Evangelista, Paola Centonze, Annaliso Rizzo, Francesco Bentivegna, Antonio Crovace, Francesco Staffieri
BACKGROUND: Haemodynamic variations normally occur in anaesthetized animals, in relation to the animal status, administered drugs, sympathetic and parasympathetic tone, fluid therapy and surgical stimulus. The possibility to measure some cardiovascular parameters, such as cardiac output (CO), during anaesthesia would be beneficial for both the anaesthesia management and its outcome. New techniques for the monitoring of CO are aimed at finding methods which are non invasive, accurate and with good trending ability, which can be used in a clinical setting...
March 6, 2018: BMC Veterinary Research
https://www.readbyqxmd.com/read/29478060/standardized-protocol-for-hemodialysis-vascular-access-assessment-the-role-of-ultrasound-and-colordoppler
#12
Federico Nalesso, Francesco Garzotto, Ilaria Petrucci, Sara Samoni, Grazia Maria Virzì, Dario Gregori, Mario Meola, Claudio Ronco
INTRODUCTION: Ultrasound and colorDoppler technique, which is relatively inexpensive, rapid, non-invasive and repeatable is a powerful tool used for early diagnosis of vascular access (VA) complications in hemodialysis patients. To date a standard and widely comprehensible echocolorDoppler (ECD) protocol is not available. MATERIALS AND METHODS: A simple step-by-step protocol based on anatomical and hemodynamic parameters of VA has been developed during a 3-years VA ECD follow-up...
January 26, 2018: Blood Purification
https://www.readbyqxmd.com/read/29472709/splanchnic-nirs-monitoring-in-neonatal-care-rationale-current-applications-and-future-perspectives
#13
REVIEW
Silvia Martini, Luigi Corvaglia
Near infrared spectroscopy (NIRS) provides a non-invasive, continuous monitoring of regional tissue oxygenation. NIRS assessment of neonatal splanchnic oxygenation (SrSO2 ) has gained increasing interest over the last decade, as local hypoxia and ischemia underlie the most feared gut complications in neonates. Current literature provides encouraging evidence in support of SrSO2 reliability in detecting mesenteric hemodynamic changes related to various physiological and pathological conditions in-term and preterm infants...
February 22, 2018: Journal of Perinatology: Official Journal of the California Perinatal Association
https://www.readbyqxmd.com/read/29409786/cine-mri-during-spontaneous-cramps-in-women-with-menstrual-pain
#14
Kevin M Hellman, Caroline S Kuhn, Frank F Tu, Katlyn E Dillane, Nathan A Shlobin, Sangeeta Senapati, Xiaojie Zhou, Wei Li, Pottumarthi V Prasad
BACKGROUND: The lack of non-invasive methods to study dysmenorrhea has resulted in poor understanding of the mechanisms underlying pain, insufficient diagnostic tests, and limited treatment options. To address this knowledge gap, we have developed an MRI-based strategy for continuously monitoring the uterus in relation to participants' spontaneous pain perception. OBJECTIVE: The study objective was to evaluate whether MRI can detect real-time changes in myometrial activity during cramping episodes in women with dysmenorrhea, with a hand-held squeeze bulb for pain reporting...
January 31, 2018: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/29382114/utility-of-non-invasive-monitoring-of-cardiac-output-and-cerebral-oximetry-during-pain-management-of-children-with-sickle-cell-disease-in-the-pediatric-emergency-department
#15
Pradeep Padmanabhan, Chikelue Oragwu, Bibhuti Das, John A Myers, Ashok Raj
Pain crisis in children with sickle cell disease (SCD) is typically managed with intravenous fluids and parenteral opioids in the pediatric emergency department. Electrical cardiometry (EC) can be utilized to measure cardiac output (CO) and cardiac index (CI) non-invasively. Near-infrared spectroscopy (NIRS) measuring cerebral (rCO₂) and splanchnic regional (rSO₂) mixed venous oxygenation non-invasively has been utilized for monitoring children with SCD. We studied the value and correlation of NIRS and EC in monitoring hemodynamic status in children with SCD during pain crisis...
January 29, 2018: Children
https://www.readbyqxmd.com/read/29380189/respiratory-changes-in-subclavian-vein-diameters-predicts-fluid-responsiveness-in-intensive-care-patients-a-pilot-study
#16
Raphaël Giraud, Paul S Abraham, Pauline Brindel, Nils Siegenthaler, Karim Bendjelid
The present pilot study investigated whether respiratory variation in subclavian vein (SCV) diameters correlates with fluid responsiveness in mechanically ventilated patients. Monocentric, prospective clinical study on fluid responsiveness in adult sedated, mechanically ventilated ICU patient, monitored with the PiCCO™ system (Pulsion Medical System, Germany), and requiring a fluid challenge (FC). A 10-min fluid bolus of 500 mL of 0.9% saline was administered. Cardiac output (CO) and dynamic parameters [stroke volume variation (SVV) and pulse pressure variation (PPV)] measured by transpulmonary thermodilution and pulse contour analysis (PiCCO™) as well as classical hemodynamic parameters were recorded at baseline and after FC...
January 29, 2018: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/29368903/-anesthesic-management-during-total-organic-separation-of-pygopagus-conjoined-twins
#17
Mayra Lizeth Nava-Martínez, Enriqueta Macias-Miranda, Karla Guadalupe Lozada-Rosete, Juan José Dosta-Herrera
BACKGROUND: Conjoined twins are among the most rare and challenging congenital malformations. The incidence varies from 1:30 000 to 1:200 000 live births. Pygopagus twins account for about 10 to 18% of all conjoined twins. CLINICAL CASE: We report the case of male conjoined pygopagus twins. They shared medullary canal, anal canal and sacrococcygeal region, without any degree of cross circulation. At the moment of the surgery, twin 1 had congenital heart disease without medical treatment...
January 2018: Revista Médica del Instituto Mexicano del Seguro Social
https://www.readbyqxmd.com/read/29342097/time-domain-near-infrared-spectroscopy-device-for-monitoring-muscle-oxidative-metabolism-custom-probe-and-in-vivo-applications
#18
Rebecca Re, Ileana Pirovano, Davide Contini, Lorenzo Spinelli, Alessandro Torricelli
Measurement of muscle oxidative metabolism is of interest for monitoring the training status in athletes and the rehabilitation process in patients. Time domain near infrared spectroscopy (TD NIRS) is an optical technique that allows the non-invasive measurement of the hemodynamic parameters in muscular tissue: concentrations of oxy- and deoxy-hemoglobin, total hemoglobin content, and tissue oxygen saturation. In this paper, we present a novel TD NIRS medical device for muscle oxidative metabolism. A custom-printed 3D probe, able to host optical elements for signal acquisition from muscle, was develop for TD NIRS in vivo measurements...
January 17, 2018: Sensors
https://www.readbyqxmd.com/read/29311754/correlation-between-cerebral-hemodynamic-and-perfusion-pressure-changes-in-non-human-primates
#19
A Ruesch, M A Smith, G Wollstein, I A Sigal, S Nelson, J M Kainerstorfer
The mechanism that maintains a stable blood flow in the brain despite changes in cerebral perfusion pressure (CPP), and therefore guaranties a constant supply of oxygen and nutrients to the neurons, is known as cerebral autoregulation (CA). In a certain range of CPP, blood flow is mediated by a vasomotor adjustment in vascular resistance through dilation of blood vessels. CA is known to be impaired in diseases like traumatic brain injury, Parkinson's disease, stroke, hydrocephalus and others. If CA is impaired, blood flow and pressure changes are coupled and the oxygen supply might be unstable...
February 2017: Proceedings of SPIE
https://www.readbyqxmd.com/read/29287672/-impact-of-hypotension-and-global-hypoperfusion-in-postoperative-delirium-a-pilot-study-in-older-adults-undergoing-open-colon-surgery
#20
Eduardo Tobar, Mario A Abedrapo, Jaime A Godoy, Jose L Llanos, Mauricio J Díaz, Rodrigo Azolas, Gunther R Bocic, Jaime A Escobar, Rodrigo A Cornejo, Carlos M Romero
BACKGROUND: Post-operative delirium is a serious complication in patients undergoing major abdominal surgery. It remains unclear whether peri-operative hemodynamic and perfusion variables affect the risk for postoperative delirium. The objective of this pilot study was to evaluate the association between perfusion and hemodynamics peri-operative with the appearance of post-operative delirium. METHODS: Prospective cohort study of adults 60 years or older undergoing elective open colon surgery...
March 2018: Revista Brasileira de Anestesiologia
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