keyword
MENU ▼
Read by QxMD icon Read
search

arterial pressure invasive monitoring

keyword
https://www.readbyqxmd.com/read/28717584/pulse-wave-analysis-with-diffusing-wave-spectroscopy
#1
Markus Belau, Wolfgang Scheffer, Georg Maret
Hypertension is a major risk factor for cardiovascular disease and thus at the origin of many deaths by e.g. heart attack or stroke. Hypertension is caused by many factors including an increase in arterial stiffness which leads to changes in pulse wave velocity and wave reflections. Those often result in an increased left ventricular load which may result in heart failure as well as an increased pulsatile pressure in the microcirculation l to damage to blood vessels. In order to specifically treat the different causes of hypertension it is desirable to perform a pulse wave analysis as a complement to measurements of systolic and diastolic pressure by brachial cuff sphygmomanometry...
July 1, 2017: Biomedical Optics Express
https://www.readbyqxmd.com/read/28707173/intraoperative-ventilation-of-morbidly-obese-patients-guided-by-transpulmonary-pressure
#2
Lars Eichler, Katarzyna Truskowska, A Dupree, P Busch, Alwin E Goetz, Christian Zöllner
BACKGROUND: Bariatric surgery has proven a successful approach in the treatment of morbid obesity and its concomitant diseases such as diabetes mellitus and arterial hypertension. Aiming for optimal management of this challenging patient cohort, tailored concepts directly guided by individual patient physiology may outperform standardized care. Implying esophageal pressure measurement and electrical impedance tomography-increasingly applied monitoring approaches to individually adjust mechanical ventilation in challenging circumstances like acute respiratory distress syndrome (ARDS) and intraabdominal hypertension-we compared our institutions standard ventilator regimen with an individually adjusted positive end expiratory pressure (PEEP) level aiming for a positive transpulmonary pressure (P L) throughout the respiratory cycle...
July 14, 2017: Obesity Surgery
https://www.readbyqxmd.com/read/28688009/comparing-volume-clamp-method-and-intra-arterial-blood-pressure-measurements-in-patients-with-atrial-fibrillation-admitted-to-the-intensive-or-medium-care-unit
#3
G F N Berkelmans, S Kuipers, B E Westerhof, A M E Spoelstra-de Man, Y M Smulders
International guidelines highlight the importance of blood pressure (BP) in patients with atrial fibrillation (AF). However, BP measurement in AF is complicated by beat-to-beat fluctuation. Automated BP measurement devices are not validated for patients with AF and no consensus exists on how to measure BP in AF manually. Beat-to-beat BP measurement using the volume-clamp method (VCM) could represent a non-invasive method to accurately assess BP, but has not been validated in AF. 31 admitted patients with sustained AF and 10 control patients with sinus rhythm underwent simultaneous intra-arterial and non-invasive BP measurement using a VCM monitor (Nexfin(®), BMEYE, Amsterdam, The Netherlands)...
July 7, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/28662770/monitoring-intraoperative-neuromuscular-blockade-and-blood-pressure-with-one-device-tof-cuff-a-comparative-study-with-mechanomyography-and-invasive-blood-pressure
#4
G Veiga Ruiz, J García Cayuela, J Orozco Montes, M Parreño Caparrós, B García Rojo, J L Aguayo Albasini
OBJECTIVE: The overall objective of the study is to determine the ability of TOF-Cuff device (blood-pressure modified cuff, including stimulation electrodes) to monitor with the same device the non-invasive blood pressure (NIBP) and the depth of a neuromuscular blockade (NMB) induced pharmacologically, by stimulation of the brachial plexus at the humeral level and recording evoked changes in arterial pressure. MATERIAL AND METHOD: Clinical, single-centre, open-controlled study with 32 adult patients ASA I-III for scheduled elective surgery under general anaesthesia in supine position, for the validation of neuromuscular monitoring, comparing the values obtained from neuromuscular relaxation TOF-Cuff with those obtained by mechanomyography (MMG) (control method) during the recovery phase of NMB, when a TOF ratio>0...
June 26, 2017: Revista Española de Anestesiología y Reanimación
https://www.readbyqxmd.com/read/28660179/monitoring-cerebral-and-renal-oxygenation-status-during-neonatal-digestive-surgeries-using-near-infrared-spectroscopy
#5
Jonathan Beck, Gauthier Loron, Claire Masson, Marie-Laurence Poli-Merol, Eliane Guyot, Camille Guillot, Nathalie Bednarek, Caroline François
BACKGROUND: Depending on the initial pathology, hypovolemia, intra-abdominal hypertension, and sepsis are often encountered in neonatal digestive surgery. Accurate newborn monitoring during and after surgery is essential to adapt resuscitation protocols. Near infrared spectroscopy (NIRS) is non-invasive and can detect hypoperfusion which indicates a low circulatory blood flow, regardless of the cause. OBJECTIVE: Evaluating changes in cerebral and renal regional oxygen saturation during neonatal digestive surgeries, conducted according to normal practices, with commonly used monitoring parameters...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/28654723/comparison-of-two-species-specific-oscillometric-blood-pressure-monitors-with-direct-blood-pressure-measurement-in-anesthetized-cats
#6
Sofia A Cerejo, Francisco J Teixeira-Neto, Natache A Garofalo, Jéssica C Rodrigues, Nathalia Celeita-Rodríguez, Angie P Lagos-Carvajal
OBJECTIVE: To compare the performance of 2 species-specific oscillometric blood pressure (OBP) monitors (petMAPclassic and petMAPgraphic ) with direct blood pressure measurement in anesthetized cats. DESIGN: Prospective, experimental study. SETTING: Veterinary teaching hospital. ANIMALS: Eight adult cats (3.2-5.5 kg). INTERVENTIONS: During isoflurane anesthesia, OBP cuffs were placed on the thoracic limb and on the base of the tail while invasive blood pressure (IBP) was recorded from a dorsal pedal artery...
June 27, 2017: Journal of Veterinary Emergency and Critical Care
https://www.readbyqxmd.com/read/28632534/administration-of-tetrahydrobiopterin-bh4-protects-the-renal-microcirculation-from-ischemia-and-reperfusion-injury
#7
Lokmane Rahmania, Diego Orbegozo, Fuhong Su, Fabio Silvio Taccone, Jean-Louis Vincent, Daniel De Backer
BACKGROUND: Abdominal aortic aneurysm surgery with suprarenal cross-clamping is often associated with renal injury. Although the mechanism underlying such injury is unclear, tissue ischemia and reperfusion, which induces endothelial dysfunction and decreases the availability of tetrahydrobiopterin (BH4), may play a role. We evaluated whether BH4 administration prevents renal ischemia/reperfusion injury in an animal model of aortic cross-clamping. METHODS: Nineteen anesthetized, mechanically ventilated, and invasively monitored adult sheep were randomized into 3 groups: sham animals (n = 5) that underwent surgical preparation but no aortic clamping; an ischemia/reperfusion group (n = 7), where the aorta was clamped above the renal arteries for 1 hour, and a BH4 group (n = 7), in which animals received 20 mg/kg of BH4 followed by aortic cross-clamp for 1 hour...
June 17, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28616241/passive-leg-raising-test-with-minimally-invasive-monitoring-the-way-forward-for-guiding-septic-shock-resuscitation
#8
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/28613389/continuous-non-invasive-pco2-monitoring-in-weaning-patients-transcutaneous-is-advantageous-over-end-tidal-pco2
#9
Sarah B Schwarz, Wolfram Windisch, Friederike S Magnet, Claudia Schmoor, Christian Karagiannidis, Jens Callegari, Sophie E Huttmann, Jan H Storre
BACKGROUND AND OBJECTIVE: Continuous partial pressure of carbon dioxide (PCO2 ) assessment is essential for the success of mechanical ventilation (MV). Non-invasive end-tidal PCO2 (PetCO2 ) and transcutaneous PCO2 (PtcCO2 ) measurements serve as alternatives to the gold standard arterial PCO2 (PaCO2 ) method, but their eligibility in critical care is unclear. METHODS: The present study therefore performed methodological comparisons of PaCO2 versus PetCO2 and PtcCO2 , respectively, in weaning patients receiving invasive MV via tracheal cannulas...
June 14, 2017: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/28599199/the-haemodynamic-effects-of-bolus-versus-slower-infusion-of-intravenous-crystalloid-in-healthy-volunteers
#10
Ida F Ukor, Andrew K Hilton, Michael J Bailey, Rinaldo Bellomo
PURPOSE: This pilot study aimed to characterise the haemodynamic effect of 1L of IV normal saline (NS) administered as a rapid versus slow infusion on cardiac output (CO), heart rate (HR), systemic blood pressures, and carotid blood flow in six healthy volunteers. MATERIALS AND METHODS: Six healthy male volunteers aged 18-65years were randomized to receive 1L NS given over 30min or 120min. On a subsequent study session the alternate fluid regimen was administered...
May 30, 2017: Journal of Critical Care
https://www.readbyqxmd.com/read/28580340/a-system-for-continuous-estimating-and-monitoring-cardiac-output-via-arterial-waveform-analysis
#11
A Vakily, H Parsaei, M M Movahhedi, M A Sahmeddini
BACKGROUND: Cardiac output (CO) is the total volume of blood pumped by the heart per minute and is a function of heart rate and stroke volume. CO is one of the most important parameters for monitoring cardiac function, estimating global oxygen delivery and understanding the causes of high blood pressure. Hence, measuring CO has always been a matter of interest to researchers and clinicians. Several methods have been developed for this purpose, but a majority of them are either invasive, too expensive or need special expertise and experience...
June 2017: Journal of Biomedical Physics & Engineering
https://www.readbyqxmd.com/read/28578165/antihypertensive-and-vasorelaxant-effects-of-aqueous-extract-of-artemisia-campestris-l-from-eastern-morocco
#12
Ikram Dib, Monique Tits, Luc Angenot, Jean Noel Wauters, Asmae Assaidi, Hassane Mekhfi, Mohammed Aziz, Mohammed Bnouham, Abdelkhaleq Legssyer, Michel Frederich, Abderrahim Ziyyat
ETHNOPHARMACOLOGICAL RELEVANCE: Artemisia campestris L. (Asteraceae) has many traditional uses, among which treatment of diabetes and hypertension. AIM OF THE STUDY: This study was conducted in order to confirm the antihypertensive and hypotensive effects of A. campestris L. aqueous extract (AcAE) and to explore the underlying mechanism of action of its vasorelaxant effect, besides the acute toxicity. Also, the chemical composition of AcAE was investigated. MATERIAL AND METHODS: the chemical content of AcAE was determined by using HPLC and NMR techniques...
July 12, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28570147/estimating-arterial-partial-pressure-of-carbon-dioxide-in-ventilated-patients-how-valid-are-surrogate-measures
#13
Boulos S Nassar, Gregory A Schmidt
The arterial partial pressure of carbon dioxide (PaCO2) is an important parameter in critically ill, mechanically ventilated patients. To limit invasive procedures or for more continuous monitoring of PaCO2, clinicians often rely on venous blood gases, capnography, or transcutaneous monitoring. Each of these has advantages and limitations. Central venous Pco2 allows accurate estimation of PaCO2, differing from it by an amount described by the Fick principle. As long as cardiac output is relatively normal, central venous Pco2 exceeds the arterial value by approximately 4 mm Hg...
June 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/28566194/non-invasive-vagus-nerve-stimulation-acutely-improves-spontaneous-cardiac-baroreflex-sensitivity-in-healthy-young-men-a-randomized-placebo-controlled-trial
#14
Diego Antonino, André L Teixeira, Paulo M Maia-Lopes, Mayara C Souza, Jeann L Sabino-Carvalho, Aaron R Murray, Jim Deuchars, Lauro C Vianna
BACKGROUND: Despite positive outcomes of transcutaneous vagus nerve stimulation (tVNS) via the auricular branch of the vagus nerve (ABVN), the mechanisms underlying these outcomes remain unclear. Additionally, previous studies have not been controlled the possible placebo effects of tVNS. OBJECTIVE: To test the hypothesis that tVNS acutely improves spontaneous cardiac baroreflex sensitivity (cBRS) and autonomic modulation, and that these effects are specific to stimulation of ABVN...
May 19, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/28565972/effects-of-insulin-glucose-pretreatment-on-bupivacaine-cardiotoxicity-in-rats
#15
Ö Pişkin, B G Aydın
A mistaken overdose of bupivacaine into systemic circulation may cause severe cardiovascular side effects. The aim of this study was to assess the effects of pretreatment with combined intra venous lipid emulsion (ILE) and high-dose insulin therapy against cardiotoxicity caused by bupivacaine intoxication. The rats were divided into the following three groups: Group B received a saline pretreatment plus a bupivacaine, group L received ILE pretreatment plus a bupivacaine, and in group I, insulin with glucose was infused intravenously, plus ILE pretreatment plus a bupivacaine...
January 1, 2017: Human & Experimental Toxicology
https://www.readbyqxmd.com/read/28544893/agreement-of-invasive-and-non-invasive-blood-pressure-measurements-in-anaesthetised-pigs-using-the-surgivet-v9203
#16
Philomena P Tuohy, Anthea L Raisis, Eleanor A Drynan
The automated oscillometric method is a common method for measuring blood pressure non-invasively and is broadly and confidently used in the veterinary setting. Twenty-one pigs undergoing anesthesia for exploratory laparotomy were enrolled in a study to evaluate the performance of the Surgivet V9203 non-invasive blood pressure (NIBP) monitor. The aim was to compare measurements of arterial blood pressure obtained simultaneously using the Surgivet V9203 oscillometric system and an intra-arterial catheter-transducer system, both at the level of the metatarsus...
May 19, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28543052/norepinephrine-reduces-arterial-compliance-less-than-phenylephrine-when-treating-general-anesthesia-induced-arterial-hypotension
#17
F Vallée, O Passouant, A Le Gall, J Joachim, J Mateo, A Mebazaa, E Gayat
INTRODUCTION: During general anesthesia, arterial hypotension is frequent and may be an important contributor to perioperative morbidity. We assessed the effect of a 5 μg bolus of Norepinephrine (NA) when compared with 50 μg bolus of Phenylephrine (PE) administered to treat hypotension during maintenance anesthesia, on MAP, derived cardiac output and arterial stiffness parameters. METHODS: Patients scheduled for a neurosurgical procedure under general anesthesia were prospectively included...
July 2017: Acta Anaesthesiologica Scandinavica
https://www.readbyqxmd.com/read/28543041/the-added-value-of-cardiac-index-and-pulse-pressure-variation-monitoring-to-mean-arterial-pressure-guided-volume-therapy-in-moderate-risk-abdominal-surgery-coguide-a-pragmatic-multicentre-randomised-controlled-trial
#18
J Stens, J-P Hering, C W P van der Hoeven, A Boom, H S Traast, L E Garmers, S A Loer, C Boer
There is disagreement regarding the benefits of goal-directed therapy in moderate-risk abdominal surgery. Therefore, we tested the hypothesis that the addition of non-invasive cardiac index and pulse pressure variation monitoring to mean arterial pressure-based goal-directed therapy would reduce the incidence of postoperative complications in patients having moderate-risk abdominal surgery. In this pragmatic multicentre randomised controlled trial, we randomly allocated 244 patients by envelope drawing in a 1:1 fashion, stratified per centre...
May 25, 2017: Anaesthesia
https://www.readbyqxmd.com/read/28541158/noninvasive-optical-monitoring-of-critical-closing-pressure-and-arteriole-compliance-in-human-subjects
#19
Wesley B Baker, Ashwin B Parthasarathy, Kimberly P Gannon, Venkaiah C Kavuri, David R Busch, Kenneth Abramson, Lian He, Rickson C Mesquita, Michael T Mullen, John A Detre, Joel H Greenberg, Daniel J Licht, Ramani Balu, W Andrew Kofke, Arjun G Yodh
The critical closing pressure ( CrCP) of the cerebral circulation depends on both tissue intracranial pressure and vasomotor tone. CrCP defines the arterial blood pressure ( ABP) at which cerebral blood flow approaches zero, and their difference ( ABP -  CrCP) is an accurate estimate of cerebral perfusion pressure. Here we demonstrate a novel non-invasive technique for continuous monitoring of CrCP at the bedside. The methodology combines optical diffuse correlation spectroscopy (DCS) measurements of pulsatile cerebral blood flow in arterioles with concurrent ABP data during the cardiac cycle...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/28540470/effects-of-remifentanil-pretreatment-on-bupivacaine-cardiotoxicity-in-rats
#20
Özcan Pişkin, Hilal Ayoğlu
Unintentional intravascular administration of bupivacaine may cause local anesthetic systemic toxicity (LAST). Although many systems are affected in LAST, the cardiovascular effects can be life-threatening. Remifentanil is a selective, ultra-short-acting, µ-opioid receptor agonist opioid. This study assessed the effects of combined pretreatment with intravenous lipid emulsion (ILE) and remifentanil on the cardiotoxicity caused by bupivacaine in an experimental model of anesthetized rats. The rats were divided into three groups...
May 24, 2017: Cardiovascular Toxicology
keyword
keyword
83716
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"