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Invasive Arterial Blood Pressure Monitoring

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https://www.readbyqxmd.com/read/28105538/comparison-of-non-invasive-blood-pressure-monitoring-using-modified-arterial-applanation-tonometry-with-intra-arterial-measurement
#1
Jarkko Harju, Antti Vehkaoja, Pekka Kumpulainen, Stefano Campadello, Ville Lindroos, Arvi Yli-Hankala, Niku Oksala
Intermittent non-invasive blood pressure measurement with tourniquets is slow, can cause nerve and skin damage, and interferes with other measurements. Invasive measurement cannot be safely used in all conditions. Modified arterial tonometry may be an alternative for fast and continuous measurement. Our aim was to compare arterial tonometry sensor (BPro(®)) with invasive blood pressure measurement to clarify whether it could be utilized in the postoperative setting. 28 patients who underwent elective surgery requiring arterial cannulation were analyzed...
January 19, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/28086939/feasibility-study-for-the-non-invasive-blood-pressure-estimation-based-on-ppg-morphology-normotensive-subject-study
#2
Hangsik Shin, Se Dong Min
BACKGROUND: Blood pressure is a critical bio-signal and its importance has been increased with the aged society and the growth of cardiovascular disease population. However, most of hypertensive patients have been suffered the inconvenience in monitoring blood pressure in daily life because the measurement of the blood pressure depends on the cuff-based technique. Nowadays there are many trials to measure blood pressure without cuff, especially, photoplethysmography (PPG) based research is carried out in various ways...
January 10, 2017: Biomedical Engineering Online
https://www.readbyqxmd.com/read/28070653/impact-of-acute-changes-in-perfusion-index-and-blood-pressure-on-the-accuracy-of-non-invasive-continuous-hemoglobin-concentration-measurements-during-induction-of-anesthesia
#3
Junichi Saito, Masato Kitayama, Erika Amanai, Kentaro Toyooka, Kazuyoshi Hirota
PURPOSE: Several factors affect the accuracy of non-invasive continuous hemoglobin concentration (SpHb) measurements. We had previously shown an increase in the perfusion index (PI) following induction of anesthesia which was associated with an increase in the difference between SpHb and total hemoglobin (tHb) (SpHb-tHb). We hypothesized that blunting the increase in PI by maintaining blood pressure during induction of anesthesia would improve the agreement between SpHb and tHb measurements...
January 9, 2017: Journal of Anesthesia
https://www.readbyqxmd.com/read/28065166/the-predictive-capabilities-of-a-novel-cardiovascular-magnetic-resonance-derived-marker-of-cardiopulmonary-reserve-on-established-prognostic-surrogate-markers-in-patients-with-pulmonary-vascular-disease-results-of-a-longitudinal-pilot-study
#4
Timothy J Baillie, Samuel Sidharta, Peter M Steele, Stephen G Worthley, Scott Willoughby, Karen Teo, Prashanthan Sanders, Stephen J Nicholls, Matthew I Worthley
BACKGROUND: No unified method exists to effectively predict and monitor progression of pulmonary arterial hypertension (PAH). We assessed the longitudinal relationship between a novel marker of cardiopulmonary reserve and established prognostic surrogate markers in patients with pulmonary vascular disease. METHODS AND RESULTS: Twenty participants with confirmed (n = 14) or at high risk (n = 6) for PAH underwent cardiovascular magnetic resonance (CMR) at baseline and after ~6 months of guideline-appropriate management...
January 9, 2017: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/28060859/physiological-biochemical-and-biophysical-characterization-of-the-lung-lavaged-spontaneously-breathing-rabbit-as-a-model-for-respiratory-distress-syndrome
#5
Francesca Ricci, Chiara Catozzi, Xabier Murgia, Brenda Rosa, Davide Amidani, Luca Lorenzini, Federico Bianco, Claudio Rivetti, Silvia Catinella, Gino Villetti, Maurizio Civelli, Barbara Pioselli, Carlo Dani, Fabrizio Salomone
Nasal continuous positive airway pressure (nCPAP) is a widely accepted technique of non-invasive respiratory support in spontaneously-breathing premature infants with respiratory distress syndrome (RDS). Surfactant administration techniques compatible with nCPAP ventilation strategy are actively investigated. Our aim is to set up and validate a respiratory distress animal model that can be managed on nCPAP suitable for surfactant administration techniques studies. Surfactant depletion was induced by bronchoalveolar lavages (BALs) on 18 adult rabbits...
2017: PloS One
https://www.readbyqxmd.com/read/28059837/complications-risk-factors-and-staffing-patterns-for-noncardiac-surgery-in-patients-with-left-ventricular-assist-devices
#6
Michael R Mathis, Subramanian Sathishkumar, Sachin Kheterpal, Matthew D Caldwell, Francis D Pagani, Elizabeth S Jewell, Milo C Engoren
BACKGROUND: Patients with left ventricular assist devices presenting for noncardiac surgery are increasingly commonplace; however, little is known about their outcomes. Accordingly, the authors sought to determine the frequency of complications, risk factors, and staffing patterns. METHODS: The authors performed a retrospective study at their academic tertiary care center, investigating all adult left ventricular assist device patients undergoing noncardiac surgery from 2006 to 2015...
January 6, 2017: Anesthesiology
https://www.readbyqxmd.com/read/28057053/a-pig-model-of-acute-right-ventricular-afterload-increase-by-hypoxic-pulmonary-vasoconstriction
#7
Kathrine Knai, Nils Kristian Skjaervold
BACKGROUND: The aim of this study was to construct a non-invasive model for acute right ventricular afterload increase by hypoxic pulmonary vasoconstriction. Intact animal models are vital to improving our understanding of the pathophysiology of acute right ventricular failure. Acute right ventricular failure is caused by increased afterload of the right ventricle by chronic or acute pulmonary hypertension combined with regionally or globally reduced right ventricular contractile capacity...
January 3, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28028530/acid-base-and-hemodynamic-status-of-patients-with-intraoperative-hemorrhage-using-two-solution-types-crystalloid-ringer-lactate-and-1-3-sodium-bicarbonate-in-half-normal-saline-solution
#8
Sayed Jalal Hashemi, Sayed Morteza Heidari, Ahmad Yaraghi, Reza Seirafi
BACKGROUND: Intraoperative hemorrhage is one of the problems during surgery and, if it happens in a high volume without an immediate action to control, it can be fatal. Nowadays, various injectable solutions are used. The aim of this study was to compare the acid-base and hemodynamic status of the patient using two solutions, Ringer lactate and 1.3% sodium bicarbonate, in half saline solution. MATERIALS AND METHODS: This clinical trial was performed at the Al-Zahra Hospital in 2013 on 66 patients who were randomly selected and put in two studied groups at the onset of hemorrhage...
2016: Advanced Biomedical Research
https://www.readbyqxmd.com/read/28006941/early-changes-of-brain-perfusion-after-subarachnoid-hemorrhage-the-effect-of-sodium-nitroprusside
#9
M Kolar, K Nohejlova, J Mares, J Pachl
Causes of early hypoperfusion after subarachnoid hemorrhage (SAH) include intracranial hypertension as well as vasoconstriction. The aim of the study was to assess the effect of intracerebroventricular (ICV) administration of sodium nitroprusside (SNP) on early hypoperfusion after SAH. Male Wistar rats (220-240 g) were used, SAH group received 250 microl of fresh autologous arterial blood into the prechiasmatic cistern; sham-operated animals received 250 microl of isotonic solution. Therapeutic intervention: ICV administration of 10 microg SNP; 5 microl 5 % glucose (SNP vehicle) and untreated control...
December 22, 2016: Physiological Research
https://www.readbyqxmd.com/read/28000041/continuous-blood-pressure-monitoring-via-non-invasive-radial-artery-applanation-tonometry-and-invasive-arterial-catheter-demonstrates-good-agreement-in-patients-undergoing-colon-carcinoma-surgery
#10
Jing Sun, Hanjian Chen, Jun Zheng, Bin Mao, Shengmei Zhu, Jingyi Feng
PURPOSE: Radial artery applanation tonometry (RAAT) has been developed and utilized for continuous arterial pressure monitoring. However, evidence is lacking to clinically verify the RAAT technology and identify appropriate patient groups before routine clinical use. This study aims to evaluate the RAAT technology by comparing systolic blood pressure (SBP), mean blood pressure (MBP) and diastolic blood pressure (DBP) values in patients undergoing colon carcinoma surgery. METHODS: Blood Pressure (BP) values obtained via RAAT (TL-300, Tensys Medical Inc...
December 20, 2016: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/27924521/effects-of-different-surfactant-administrations-on-cerebral-autoregulation-in-preterm-infants-with-respiratory-distress-syndrome
#11
Xu-Fang Li, Ting-Ting Cheng, Rui-Lian Guan, Hong Liang, Wei-Neng Lu, Jing-Hua Zhang, Mei-Yi Liu, Xin Yu, Jun Liang, Li Sun, Lian Zhang
To treat respiratory distress syndrome, surfactant is currently delivered via less invasive surfactant administration (LISA) or INtubation SURfactant Extubation (INSURE). The aim of this study was to compare the effect of the two delivery methods of surfactant on cerebral autoregulation. Near infrared spectroscopy monitoring was carried out to detect cerebral oxygen saturation (ScO2), and the mean arterial blood pressure (MABP) was simultaneously recorded. Of 44 preterm infants included, the surfactant was administrated to 22 via LISA and 22 via INSURE...
December 2016: Journal of Huazhong University of Science and Technology. Medical Sciences
https://www.readbyqxmd.com/read/27795989/normothermic-machine-perfusion-of-deceased-donor-liver-grafts-is-associated-with-improved-postreperfusion-hemodynamics
#12
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
#13
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
#14
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
#15
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
#16
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/27702881/minimally-invasive-beat-by-beat-monitoring-of-cardiac-power-in-normal-hearts-and-during-acute-ventricular-dysfunction
#17
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
#18
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
#19
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/27680814/g3-intraoperative-haemodynamic-monitoring-during-high-risk-caesarean-section-a-comparison-between-bioreactance-nicom-r-and-pressure-waveform-analysis-lidcorapidr-preliminary-results
#20
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
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