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arterial pressure invasive monitoring

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https://www.readbyqxmd.com/read/27894069/association-between-left-atrial-dilatation-and-invasive-hemodynamics-at-rest-and-during-exercise-in-asymptomatic-aortic-stenosis
#1
Nicolaj Lyhne Christensen, Jordi Sanchez Dahl, Rasmus Carter-Storch, Rine Bakkestrøm, Kurt Jensen, Flemming Hald Steffensen, Eva Vad Søndergaard, Lars Videbæk, Jacob Eifer Møller
BACKGROUND: Transition from an asymptomatic to symptomatic state in severe aortic stenosis is often difficult to assess. Identification of a morphological sign of increased hemodynamic load may be important in asymptomatic aortic stenosis to identify patients at risk. METHODS AND RESULTS: Thirty-nine patients with asymptomatic severe aortic stenosis (aortic valve area <1 cm(2), peak jet velocity >3.5 m/s) underwent exercise testing with simultaneous invasive hemodynamic monitoring and Doppler echocardiography...
October 2016: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/27878925/left-ventricular-deformation-at-rest-predicts-exercise-induced-elevation-in-pulmonary-artery-wedge-pressure-in-patients-with-unexplained-dyspnoea
#2
Tor Biering-Sørensen, Mário Santos, Jose Rivero, Shane D McCullough, Erin West, Alexander R Opotowsky, Aaron B Waxman, David M Systrom, Amil M Shah
AIMS: Impaired left ventricular (LV) deformation despite preserved LV ejection fraction (LVEF) is common and predicts outcomes in heart failure with preserved LVEF. We hypothesized that impaired LV deformation at rest is a marker of impaired cardiac systolic and diastolic reserve, and aimed to determine whether resting longitudinal (LS) and circumferential strain (CS) are associated with invasively measured haemodynamic response to exercise in patients with dyspnoea and a normal LVEF...
November 22, 2016: European Journal of Heart Failure
https://www.readbyqxmd.com/read/27795989/normothermic-machine-perfusion-of-deceased-donor-liver-grafts-is-associated-with-improved-postreperfusion-hemodynamics
#3
Roberta Angelico, M Thamara P R Perera, Reena Ravikumar, David Holroyd, Constantin Coussios, Hynek Mergental, John R Isaac, Asim Iqbal, Hentie Cilliers, Paolo Muiesan, Peter J Friend, Darius F Mirza
BACKGROUND: Graft reperfusion poses a critical challenge during liver transplantation and can be associated with hemodynamic instability/postreperfusion syndrome. This is sequel to ischemia-reperfusion injury and normothermic machine preservation (NMP) may affect hemodynamic changes. Herein, we characterize postreperfusion hemodynamics in liver grafts after NMP and traditional cold preservation. MATERIALS AND METHODS: Intraoperative records of patients receiving grafts after NMP (n = 6; NMP group) and cold storage (CS) (n = 12; CS group) were compared...
September 2016: Transplantation Direct
https://www.readbyqxmd.com/read/27790472/arterial-stiffness-and-trace-elements-in-apparently-healthy-population-a-cross-sectional-study
#4
Gangapatnam Subrahmanyam, Rama Mohan Pathapati, Krishnan Ramalingam, Selvam Armugam Indira, Katari Kantha, Bhemasen Soren
INTRODUCTION: Stiffening of arteries is a natural ageing process. Any diseases/disorders or risk factors that escalate oxidative stress, microvascular inflammation and endothelial damage may promote to premature vascular stiffening. Any imbalance in these trace element levels may independently contribute to the changes in the components in the arterial wall and thus, arterial stiffness via one or more mechanisms. AIM: To evaluate the severity of arterial stiffness in apparently healthy population and also to evaluate role of various risk factors and trace elements in the severity of arterial stiffness...
September 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27766526/implementation-of-a-novel-postoperative-monitoring-system-using-automated-modified-early-warning-scores-mews-incorporating-end-tidal-capnography
#5
Joseph M Blankush, Robbie Freeman, Joy McIlvaine, Trung Tran, Stephen Nassani, I Michael Leitman
Modified Early Warning Scores (MEWS) provide real-time vital sign (VS) trending and reduce ICU admissions in post-operative patients. These early warning calculations classically incorporate oxygen saturation, heart rate, respiratory rate, systolic blood pressure, and temperature but have not previously included end-tidal CO2 (EtCO2), more recently identified as an independent predictor of critical illness. These systems may be subject to failure when physiologic data is incorrectly measured, leading to false alarms and increased workload...
October 20, 2016: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/27738950/patterns-of-intra-arterial-blood-pressure-monitoring-for-patients-undergoing-total-shoulder-arthroplasty-under-general-anesthesia-a-retrospective-analysis-of-23-073-patients
#6
Rodney A Gabriel, Anair Beverly, Richard P Dutton, Richard D Urman
Total shoulder arthroplasty (TSA) is typically performed in the beach-chair position. Maintenance of adequate mean arterial pressure is required to provide appropriate cerebral perfusion pressure and prevent cerebral ischemia. Placement of an arterial line to facilitate invasive monitoring is discretionary, based on clinical judgment. We aimed to describe patient, surgical and institutional factors associated with the current use of blood pressure monitoring via an arterial line for TSA. We used de-identified patient data from the National Anesthesia Clinical Outcomes Registry between 2010 and 2015 to identify patients undergoing TSA under general anesthesia...
October 13, 2016: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/27730533/improved-blood-pressure-prediction-using-systolic-flow-correction-of-pulse-wave-velocity
#7
Jeffrey S Lillie, Alexander S Liberson, David A Borkholder
Hypertension is a significant worldwide health issue. Continuous blood pressure monitoring is important for early detection of hypertension, and for improving treatment efficacy and compliance. Pulse wave velocity (PWV) has the potential to allow for a continuous blood pressure monitoring device; however published studies demonstrate significant variability in this correlation. In a recently presented physics-based mathematical model of PWV, flow velocity is additive to the classic pressure wave as estimated by arterial material properties, suggesting flow velocity correction may be important for cuff-less non-invasive blood pressure measures...
December 2016: Cardiovascular Engineering and Technology
https://www.readbyqxmd.com/read/27725319/noninvasive-assessment-of-the-collateral-circulation-in-the-hand-validation-of-the-nexfin-system-and-relation-to-clinical-outcome-after-transradial-catheterization
#8
Maurits R Hollander, Maarten A H van Leeuwen, Dirk van der Heijden, Vincent M N Keizer, Peter M van de Ven, Sander J J IJsselmuiden, Nicolas M Van Mieghem, Giovanni Amoroso, Marco J P F Ritt, Paul Knaapen, Niels van Royen
AIMS: During transradial coronary catheterization the radial artery is functionally occluded and hand perfusion depends on the collateral circulation. Nexfin is a simple, non-invasive technique to measure digital arterial pressure and could serve to quantify the palmar collateral circulation. Potentially, inter-individual differences in the extent of collateralization are related to perfusion and function after transradial intervention. METHODS AND RESULTS: In total 85 adults were included (18 healthy volunteers; 67 patients who underwent transradial catheterization)...
October 11, 2016: EuroIntervention
https://www.readbyqxmd.com/read/27716702/global-end-diastolic-volume-an-emerging-preload-marker-vis-a-vis-other-markers-have-we-reached-our-goal
#9
P M Kapoor, Vandana Bhardwaj, Amita Sharma, Usha Kiran
A reliable estimation of cardiac preload is helpful in the management of severe circulatory dysfunction. The estimation of cardiac preload has evolved from nuclear angiography, pulmonary artery catheterization to echocardiography, and transpulmonary thermodilution (TPTD). Global end-diastolic volume (GEDV) is the combined end-diastolic volumes of all the four cardiac chambers. GEDV has been demonstrated to be a reliable preload marker in comparison with traditionally used pulmonary artery catheter-derived pressure preload parameters...
October 2016: Annals of Cardiac Anaesthesia
https://www.readbyqxmd.com/read/27702881/minimally-invasive-beat-by-beat-monitoring-of-cardiac-power-in-normal-hearts-and-during-acute-ventricular-dysfunction
#10
Audun E Rimehaug, Eirik Skogvoll, Petter Aadahl, Oddveig Lyng, Dag O Nordhaug, Lasse Løvstakken, Idar Kirkeby-Garstad
Cardiac power, the product of aortic flow and blood pressure, appears to be a fundamental cardiovascular parameter. The simplified version named cardiac power output (CPO), calculated as the product of cardiac output (CO) in L/min and mean arterial pressure (MAP) in mmHg divided by 451, has shown great ability to predict outcome in a broad spectrum of cardiac disease. Beat-by-beat evaluation of cardiac power (PWR) therefore appears to be a possibly valuable addition when monitoring circulatory unstable patients, providing parameters of overall cardiovascular function...
October 2016: Physiological Reports
https://www.readbyqxmd.com/read/27687383/real-time-measurement-of-blood-pressure-with-nexfin-in-a-patient-with-thalidomide-related-phocomelia
#11
Rosie Earle, Himat Vaghadia, Enda Shanahan, Raymond Tang, Andrew Sawka
We report the novel application of photoplethysmographic technology with the Nexfin HD monitor for real-time measurement of blood pressure (BP) in a patient with tetraamelia. The patient was a 58-year-old man with tetraamelia secondary to thalidomide exposure in utero, who presented for surgical excision of a maxillary schwannoma. Because difficulty of cuff use on rudimentary limbs and failure to gain invasive arterial access due to abnormalities of limb vasculature, this population is known to pose some unique challenges for BP measurement...
November 2016: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/27684548/levosimendan-administration-in-limb-ischemia-multicomponent-signaling-serving-kidney-protection
#12
Peter Onody, Peter Aranyi, Zsolt Turoczi, Rita Stangl, Andras Fulop, Emese Dudas, Gabor Lotz, Attila Szijarto
AIMS AND OBJECTIVES: Acute renal failure is a severe complication of lower extremity major arterial reconstructions, which could even be fatal. Levosimendan is a dual-acting positive inotropic and vasodilatory agent, which is suspected to have protective effects against cardiac ischemia. However, there is no data available on lower limb or remote organ ischemic injuries therefore the aim of the study was to investigate the effect of levosimendan on lower limb ischemia-reperfusion injury and the corollary renal dysfunction...
2016: PloS One
https://www.readbyqxmd.com/read/27683632/hemodynamic-monitoring-in-heart-failure-and-pulmonary-hypertension-from-analog-tracings-to-the-digital-age
#13
REVIEW
Ryan Davey, Amresh Raina
Hemodynamic monitoring has long formed the cornerstone of heart failure (HF) and pulmonary hypertension diagnosis and management. We review the long history of invasive hemodynamic monitors initially using pulmonary artery (PA) pressure catheters in the hospital setting, to evaluating the utility of a number of implantable devices that can allow for ambulatory determination of intracardiac pressures. Although the use of indwelling PA catheters has fallen out of favor in a number of settings, implantable devices have afforded clinicians an opportunity for objective determination of a patient's volume status and pulmonary pressures...
September 24, 2016: World Journal of Transplantation
https://www.readbyqxmd.com/read/27680815/g4-does-maternal-obesity-have-an-adverse-effect-on-haemodynamics
#14
D Vinayagam, Juan Gutierrez, J Binder, B Thilaganathan, A Khalil
BACKGROUND: The increase in the prevalence of and the adverse risks to both mother and foetus associated with maternal obesity is a global concern. The adverse cardiovascular risk associated with obesity is well-known, however, there is a paucity of data assessing central haemodynamics in class 3 (morbid) obesity (BMI440 kg/m(2)) during pregnancy. OBJECTIVE: To compare the haemodynamic profile in women with class 3 maternal obesity against those with a normal BMI (20-30 kg/m(2)), using ultrasound-based, non-invasive haemodynamic monitoring...
August 2016: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/27680814/g3-intraoperative-haemodynamic-monitoring-during-high-risk-caesarean-section-a-comparison-between-bioreactance-nicom-r-and-pressure-waveform-analysis-lidcorapidr-preliminary-results
#15
D Vinayagam, S Bampoe, B Thilaganathan, A Khalil
BACKGROUND: Intraoperative haemodynamic monitoring is carried out in high-risk surgical patients, often using invasive methods, including pulmonary artery catheterisation. Early goal-directed therapy in high-risk surgical patients reduces tissue hypoxia, organ failure and improves outcomes. Significant maternal morbidity arises as a result of perioperative haemorrhage. At present, heart rate and brachial blood pressure are used as proxy markers to aid in fluid resuscitation, however, we know that these exhibit minimal change during early stages of shock, and are poor indicators of the adequacy of therapeutic intervention...
August 2016: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/27677690/-intraventricular-hemorrhage-after-dural-fistula-embolization
#16
Joana Chaves Gonçalves Rodrigues de Carvalho, Francisco Javier Tercero Machin, Luis San Roman Manzanera, Jordi Blasco Andaluz, Sílvia Herrero Nogués, Núria Peix Soriano, Victor Obach Baurier, Enrique Jesus Carrero Cardenal
BACKGROUND AND OBJECTIVES: Dural arteriovenous fistulas are anomalous shunts between dural arterial and venous channels whose nidus is located between the dural leaflets. For those circumstances when invasive treatment is mandatory, endovascular techniques have grown to become the mainstay of practice, choice attributable to their reported safety and effectiveness. We describe the unique and rare case of a dural arteriovenous fistula treated by transarterial embolization and complicated by an intraventricular hemorrhage...
September 24, 2016: Revista Brasileira de Anestesiologia
https://www.readbyqxmd.com/read/27673754/transcutaneous-carbon-dioxide-monitoring-with-reduced-temperature-probes-in-very-low-birth-weight-infants
#17
Safwat Aly, Mohamed El-Dib, Mohamed Mohamed, Hany Aly
Background Obtaining blood gases in very low birth weight (VLBW) infants is an invasive procedure. Studies using transcutaneous carbon dioxide (tcPCO2) have reported variable skin complications with high-temperature probes. No enough data available on tcPCO2 monitoring using reduced-temperature probes (41°C). Objective The objective of this study was to assess reliability and safety of tcPCO2 monitoring at reduced-temperature probe in VLBW infants. Design and Methods A prospective study was conducted on VLBW infants...
September 27, 2016: American Journal of Perinatology
https://www.readbyqxmd.com/read/27668173/nasal-high-flow-reduces-hypercapnia-by-clearance-of-anatomical-dead-space-in-a-copd-patient
#18
Kathrin Fricke, Stanislav Tatkov, Ulrike Domanski, Karl-Josef Franke, Georg Nilius, Hartmut Schneider
Chronic obstructive pulmonary disease (COPD) with hypercapnia is associated with increased mortality. Non-invasive ventilation (NIV) can lower hypercapnia and ventilator loads but is hampered by a low adherence rate leaving a majority of patients insufficiently treated. Recently, nasal high flow (NHF) has been introduced in the acute setting in adults, too. It is an open nasal cannula system for delivering warm and humidified air or oxygen at high flow rates (2-50 L/min) assisting ventilation. It was shown that this treatment can improve hypercapnia...
2016: Respiratory Medicine Case Reports
https://www.readbyqxmd.com/read/27664285/electroacupuncture-pretreatment-induces-rapid-tolerance-to-bupivacaine-cardiotoxicity-in-rats
#19
Jun-Long Gao, Yu-Lan Li, Xiu-Mei Wang, Qian-Long Zhao, Hai-Jun Zhang, Fang-Fang Han, Xia-Xia Li, Dong-Hang Zhang
BACKGROUND: Evidence suggests that electroacupuncture (EA) protects against arrhythmia and myocardial injury induced by myocardial ischaemia-reperfusion. However, to our knowledge, it remains unknown whether EA could alleviate bupivacaine-induced cardiotoxicity. Therefore, we aimed to explore the effect of EA pretreatment on bupivacaine-induced cardiac arrest and outcomes of cardiopulmonary resuscitation (CPR) in rats. METHODS: 24 adult male Sprague-Dawley rats were randomly divided into two groups: EA (n=12), and minimal acupuncture (MA) (n=12)...
December 2016: Acupuncture in Medicine: Journal of the British Medical Acupuncture Society
https://www.readbyqxmd.com/read/27639399/noninvasive-pulmonary-artery-pressure-monitoring-by-eit-a-model-based-feasibility-study
#20
Martin Proença, Fabian Braun, Josep Solà, Jean-Philippe Thiran, Mathieu Lemay
Current monitoring modalities for patients with pulmonary hypertension (PH) are limited to invasive solutions. A novel approach for the noninvasive and unsupervised monitoring of pulmonary artery pressure (PAP) in patients with PH was proposed and investigated. The approach was based on the use of electrical impedance tomography (EIT), a noninvasive and safe monitoring technique, and was tested through simulations on a realistic 4D bio-impedance model of the human thorax. Changes in PAP were induced in the model by simulating multiple types of hypertensive conditions...
September 17, 2016: Medical & Biological Engineering & Computing
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