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Hemodynamic monitoring response

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https://www.readbyqxmd.com/read/29789877/-meta-analyses-on-measurement-precision-of-non-invasive-hemodynamic-monitoring-technologies-in-adults
#1
G Pestel, K Fukui, M Higashi, I Schmidtmann, C Werner
An ideal non-invasive monitoring system should provide accurate and reproducible measurements of clinically relevant variables that enables clinicians to guide therapy accordingly. The monitor should be rapid, easy to use, readily available at the bedside, operator-independent, cost-effective and should have a minimal risk and side effect profile for patients. An example is the introduction of pulse oximetry, which has become established for non-invasive monitoring of oxygenation worldwide. A corresponding non-invasive monitoring of hemodynamics and perfusion could optimize the anesthesiological treatment to the needs in individual cases...
May 22, 2018: Der Anaesthesist
https://www.readbyqxmd.com/read/29788919/prediction-of-fluid-responsiveness-in-mechanically-ventilated-cardiac-surgical-patients-the-performance-of-seven-different-functional-hemodynamic-parameters
#2
Michael T Ganter, Martin Geisen, Sonja Hartnack, Omer Dzemali, Christoph K Hofer
BACKGROUND: Functional hemodynamic parameters such as stroke volume and pulse pressure variation (SVV and PPV) have been shown to be reliable predictors of fluid responsiveness in mechanically ventilated patients. Today, different minimally- and non-invasive hemodynamic monitoring systems measure functional hemodynamic parameters. Although some of these parameters are described by the same name, they differ in their measurement technique and thus may provide different results. We aimed to test the performance of seven functional hemodynamic parameters simultaneously in the same clinical setting...
May 22, 2018: BMC Anesthesiology
https://www.readbyqxmd.com/read/29781990/fetal-mouse-cardiovascular-imaging-using-a-high-frequency-ultrasound-30-45mhz-system
#3
Marlin Touma
Congenital heart defects (CHDs) are the most common cause of childhood morbidity and early mortality. Prenatal detection of the underlying molecular mechanisms of CHDs is crucial for inventing new preventive and therapeutic strategies. Mutant mouse models are powerful tools to discover new mechanisms and environmental stress modifiers that drive cardiac development and their potential alteration in CHDs. However, efforts to establish the causality of these putative contributors have been limited to histological and molecular studies in non-survival animal experiments, in which monitoring the key physiological and hemodynamic parameters is often absent...
May 5, 2018: Journal of Visualized Experiments: JoVE
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/29770594/functional-optical-coherence-tomography-of-neurovascular-coupling-interactions-in-the-retina
#5
Taeyoon Son, Minhaj Alam, Devrim Toslak, Benquan Wang, Yiming Lu, Xincheng Yao
Quantitative evaluation of retinal neurovascular coupling is essential for a better understanding of visual function and early detection of eye diseases. However, there is no established method to monitor coherent interactions between stimulus-evoked neural activity and hemodynamic responses at high resolution. Here we report a multi-modal functional optical coherence tomography (OCT) imaging methodology to enable concurrent intrinsic optical signal (IOS) imaging of stimulus-evoked neural activity and hemodynamic responses at capillary resolution...
May 16, 2018: Journal of Biophotonics
https://www.readbyqxmd.com/read/29764550/-predictive-value-of-central-venous-to-arterial-carbon-dioxide-partial-pressure-difference-for-fluid-responsiveness-in-septic-shock-patients-a-prospective-clinical-study
#6
Guangyun Liu, Huibin Huang, Hanyu Qin, Bin Du
OBJECTIVE: To evaluate the accuracy of central venous-to-arterial carbon dioxide partial pressure difference (Pcv-aCO2 ) before and after rapid rehydration test (fluid challenge) in predicting the fluid responsiveness in patients with septic shock. METHODS: A prospective observation was conducted. Forty septic shock patients admitted to medical intensive care unit (ICU) of Peking Union Medical College Hospital from October 2015 to June 2017 were enrolled. All of the patients received fluid challenge in the presence of invasive hemodynamic monitoring...
May 2018: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/29761006/sodium-valproate-compared-to-phenytoin-in-treatment-of-status-epilepticus
#7
Mohammad Reza Amiri-Nikpour, Surena Nazarbaghi, Parisa Eftekhari, Sedra Mohammadi, Sina Dindarian, Mahdi Bagheri, Hozan Mohammadi
Background: Status epilepticus (SE) is a neurological emergency which can be life-threatening. Several medical regimens are used in order to control it. In this study, we intended to evaluate the clinical efficacy and tolerability of sodium valproate and intravenous phenytoin (IV PHT) in the control of SE. Methods: One hundred and ten consecutive patients suffering from benzodiazepine refractory SE who were referred to the emergency ward from March 2014 to March 2015 were randomly divided into two groups...
May 2018: Brain and Behavior
https://www.readbyqxmd.com/read/29757059/quantitative-hemodynamic-analysis-of-cerebral-blood-flow-and-neurovascular-coupling-using-optical-coherence-tomography-angiography
#8
Paul Shin, WooJhon Choi, JongYoon Joo, Wang-Yuhl Oh
Functional hyperemia in the rat cortex was investigated using high-speed optical coherence tomography (OCT) angiography and Doppler OCT. OCT angiography (OCTA) was performed to image the hemodynamic stimulus-response over a wide field of view. Temporal changes in vessel diameters in different vessel compartments, which were determined as the diameters of erythrocyte flows in OCT angiograms, were measured in order to monitor localized hemodynamic changes. Our results showed that the dilation of arterioles at the site of activation was accompanied by the dilation of upstream arteries...
January 1, 2018: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/29748700/myocardial-stress-perfusion-mri-experience-in-pediatric-and-young-adult-patients-following-arterial-switch-operation-utilizing-regadenoson
#9
Cory V Noel, Ramkumar Krishnamurthy, Prakash Masand, Brady Moffett, Tobiash Schlingmann, Benjamin Y Cheong, Rajesh Krishnamurthy
Dextro-transposition of the great arteries (D-TGA) is one of the most common cyanotic heart lesions. The arterial switch operation (ASO) is the preferred surgical palliation for D-TGA. One of the primary concerns following the ASO is complications arising from the coronary artery transfer. There is a need for myocardial perfusion assessment within ASO patients. There is no report on the utility of regadenoson as a stress agent in children following ASO. Our objective was to observe the safety and feasibility of regadenoson as a pharmacologic stressor for perfusion cardiac MR in a pilot cohort of pediatric and young-adult patients who have undergone ASO...
May 10, 2018: Pediatric Cardiology
https://www.readbyqxmd.com/read/29725828/comparison-of-effect-of-dexmedetomidine-and-lidocaine-on-intracranial-and-systemic-hemodynamic-response-to-chest-physiotherapy-and-tracheal-suctioning-in-patients-with-severe-traumatic-brain-injury
#10
Shalendra Singh, Rajendra Singh Chouhan, Ashish Bindra, Nayani Radhakrishna
PURPOSE: Chest physiotherapy and tracheal suction cause sympathetic stimulation and increase heart rate (HR), mean arterial pressure (MAP) and intracranial pressure (ICP) which may have deleterious effect in the head injured. We planned to compare the effect of intravenous dexmedetomidine and lidocaine on intracerebral and systemic hemodynamic response to chest physiotherapy (CP) and tracheal suctioning (TS) in patients with severe traumatic brain injury (sTBI). METHODS: Prospective, randomized study in patients with sTBI, 18-60 years of age, undergoing mechanical ventilation and intraparenchymal ICP monitoring...
May 3, 2018: Journal of Anesthesia
https://www.readbyqxmd.com/read/29716910/noninvasive-blood-pressure-monitoring-and-prediction-of-fluid-responsiveness-to-passive-leg-raising
#11
Joya D Pickett, Elizabeth Bridges, Patricia A Kritek, JoAnne D Whitney
BACKGROUND: Intravenous fluid boluses are administered to patients in shock to improve tissue hypoperfusion. However, fluid boluses result in clinically significant stroke volume increases in only about 50% of patients. Hemodynamic responses to passive leg raising measured with invasive and minimally invasive methods are accurate predictors of fluid responsiveness. However, few studies have used noninvasive blood pressure measurement to evaluate responses to passive leg raising. OBJECTIVE: To determine if passive leg raising-induced increases in pulse pressure or systolic blood pressure can be used to predict clinically significant increases in stroke volume index in healthy volunteers...
May 2018: American Journal of Critical Care: An Official Publication, American Association of Critical-Care Nurses
https://www.readbyqxmd.com/read/29706036/breast-tumor-hemodynamic-response-during-a-breath-hold-as-a-biomarker-to-predict-chemotherapeutic-efficacy-preclinical-study
#12
Songhyun Lee, Jae Gwan Kim
Continuous wave diffuse optical tomographic/spectroscopic system does not provide absolute concentrations of chromophores in tissue and monitor only the changes of chromophore concentration. Therefore, it requires a perturbation of physiological signals, such as blood flow and oxygenation. In that sense, a few groups reported that monitoring a relative hemodynamic change during a breast tissue compression or a breath-hold to a patient can provide good contrast between tumor and nontumor. However, no longitudinal study reports the utilization of a breath-hold to predict tumor response during chemotherapy...
April 2018: Journal of Biomedical Optics
https://www.readbyqxmd.com/read/29689281/fabrication-of-engineered-tubular-tissue-for-small-blood-vessels-via-three-dimensional-cellular-assembly-and-organization-ex-vivo
#13
Taisuke Masuda, Mitsuhiro Ukiki, Yuka Yamagishi, Michiya Matsusaki, Mitsuru Akashi, Utako Yokoyama, Fumihito Arai
Although there is a great need for suitable vascular replacements in clinical practice, much progress needs to be made toward the development of a fully functional tissue-engineered construct. We propose a fabrication method of engineered tubular tissue for small blood vessels via a layer-by-layer cellular assembly technique using mouse smooth muscle cells, the construction of a poly-(L-lactide-co-ε-caprolactone) (PLCL) scaffold, and integration in a microfluidic perfusion culture system. The cylindrical PLCL scaffold is incised, expanded, and its surface is laminated with the cell layers...
April 21, 2018: Journal of Biotechnology
https://www.readbyqxmd.com/read/29675404/neonatal-hemodynamics-from-developmental-physiology-to-comprehensive-monitoring
#14
REVIEW
Sabine L Vrancken, Arno F van Heijst, Willem P de Boode
Maintenance of neonatal circulatory homeostasis is a real challenge, due to the complex physiology during postnatal transition and the inherent immaturity of the cardiovascular system and other relevant organs. It is known that abnormal cardiovascular function during the neonatal period is associated with increased risk of severe morbidity and mortality. Understanding the functional and structural characteristics of the neonatal circulation is, therefore, essential, as therapeutic hemodynamic interventions should be based on the assumed underlying (patho)physiology...
2018: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/29663822/the-effect-of-intrathecal-sufentanil-preconditioning-against-myocardial-ischemia-reperfusion-injury
#15
Y Tire, G Sarkilar, H Esen, R Onoglu, S T Uzun
OBJECTIVES: We aimed to investigate the cardioprotective effect and hemodynamic response of intrathecally administered sufentanil on myocardial IR injury. BACKGROUND: Sufentanil, mu opioid receptor agonist, intravenously administered during clinical and experimental studies, has been shown to have a cardioprotective effect on myocardial ischemia-reperfusion injury. METHODS: Thirty-two New Zealand type rabbits, which were anesthetized, were divided into four equal groups: sham, ischemia-reperfusion, sufentanil and ischemia-reperfusion+sufentanil...
2018: Bratislavské Lekárske Listy
https://www.readbyqxmd.com/read/29621027/cardiac-output-monitoring-how-to-choose-the-optimal-method-for-the-individual-patient
#16
Bernd Saugel, Jean-Louis Vincent
PURPOSE OF REVIEW: To review the different methods available for the assessment of cardiac output (CO) and describe their specific indications in intensive care and perioperative medicine. RECENT FINDINGS: In critically ill patients, persistent circulatory shock after initial resuscitation is an indication for the assessment of CO to monitor the response to fluids and vasoactive agents. In patients with circulatory shock associated with right ventricular dysfunction, pulmonary artery hypertension, or acute respiratory distress syndrome, invasive CO monitoring using indicator dilution methods is indicated...
June 2018: Current Opinion in Critical Care
https://www.readbyqxmd.com/read/29616230/anesthesia-associated-relative-hypovolemia-mechanisms-monitoring-and-treatment-considerations
#17
Jessica Noel-Morgan, William W Muir
Although the utility and benefits of anesthesia and analgesia are irrefutable, their practice is not void of risks. Almost all drugs that produce anesthesia endanger cardiovascular stability by producing dose-dependent impairment of cardiac function, vascular reactivity, and compensatory autoregulatory responses. Whereas anesthesia-related depression of cardiac performance and arterial vasodilation are well recognized adverse effects contributing to anesthetic risk, far less emphasis has been placed on effects impacting venous physiology and venous return...
2018: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/29602588/-transesophageal-echocardiography-in-perioperative-period-guiding-the-decision-making-during-hemodynamic-instability-due-to-atrial-fibrillation
#18
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
#19
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/29574034/cerebrovascular-reactivity-cvr-mri-with-co2-challenge-a-technical-review
#20
Peiying Liu, Jill De Vis, Hanzhang Lu
Cerebrovascular reactivity (CVR) is an indicator of cerebrovascular reserve and provides important information about vascular health in a range of brain conditions and diseases. Unlike steady-state vascular parameters, such as cerebral blood flow (CBF) and cerebral blood volume (CBV), CVR measures the ability of cerebral vessels to dilate or constrict in response to challenges or maneuvers. Therefore, CVR mapping requires a physiological challenge while monitoring the corresponding hemodynamic changes in the brain...
March 21, 2018: NeuroImage
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