Read by QxMD icon Read

"Pulse contour"

Ottavia Bond, Selene Pozzebon, Sabino Scolletta, Federico Franchi, Federica Zama Cavicchi, Jacques Creteur, Jean-Louis Vincent, Fabio Silvio Taccone
No abstract text is available yet for this article.
December 2016: Critical Care Medicine
Sebastian Mair, Julia Tschirdewahn, Simon Götz, Johanna Frank, Veit Phillip, Benedikt Henschel, Caroline Schultheiss, Ulrich Mayr, Sebastian Noe, Matthias Treiber, Roland M Schmid, Bernd Saugel, Wolfgang Huber
Sinus rhythm (SR) and controlled mechanical ventilation (CV) are mandatory for the applicability of respiratory changes of the arterial curve such as stroke volume variation (SVV) to predict fluid-responsiveness. Furthermore, several secondary limitations including tidal volumes <8 mL/kg and SVV-values within the "gray zone" of 9-13% impair prediction of fluid-responsiveness by SVV. Therefore, we investigated the prevalence of these four conditions in general ICU-patients. This longitudinal observational study analyzed a prospectively maintained haemodynamic database including 4801 transpulmonary thermodilution and pulse contour analysis measurements of 278 patients (APACHE-II 21...
November 5, 2016: Journal of Clinical Monitoring and Computing
S Casaccia, E J Sirevaag, E J Richter, J A O'Sullivan, L Scalise, J W Rohrbaugh
This report amplifies and extends prior descriptions of the use of laser Doppler vibrometry (LDV) as a method for assessing cardiovascular activity, on a non-contact basis. A rebreathing task (n = 35 healthy individuals) was used to elicit multiple effects associated with changes in autonomic drive as well as blood gases including hypercapnia. The LDV pulse was obtained from two sites overlying the carotid artery, separated by 40 mm. A robust pulse signal was obtained from both sites, in accord with the well-described changes in carotid diameter over the blood pressure cycle...
October 2016: Review of Scientific Instruments
Dominic Ruh, Sivaraman Subramanian, Stanislav Sherman, Johannes Ruhhammer, Michael Theodor, Lebrecht Dirk, Katharina Foerster, Claudia Heilmann, Friedhelm Beyersdorf, Hans Zappe, Andreas Seifert
Most cardiovascular diseases, such as arteriosclerosis and hypertension, are directly linked to pathological changes in hemodynamics, i.e. the complex coupling of blood pressure, blood flow and arterial distension. To improve the current understanding of cardiovascular diseases and pave the way for novel cardiovascular diagnostics, innovative tools are required that measure pressure, flow, and distension waveforms with yet unattained spatiotemporal resolution. In this context, miniaturized implantable solutions for continuously measuring these parameters over the long-term are of particular interest...
September 1, 2016: Biomedical Optics Express
Kuang-Cheng Chan, Chun-Yu Wu, Ming-Hui Hung, Po-Huang Lee, Ya-Jung Cheng
BACKGROUND/PURPOSE: Postoperative acute lung injury (ALI) after liver transplantation is clinically relevant and common. The perioperative thoracic fluid indices changes as well as the association with ALI in liver transplantation have not been thoroughly investigated. METHODS: A total of 52 consecutive adult recipients for elective living donor liver transplantation were enrolled. Each recipient received the same perioperative care plan. Thoracic fluid indices, including the cardiac index, intrathoracic blood volume index (ITBVI), extravascular lung water index (EVLWI), and pulmonary vascular permeability index (PVPI), were obtained at seven time points (pretransplantation, anhepatic phase, 30 minutes after reperfusion, 2 hours after reperfusion, and postoperative days 1-3) using the pulse contour cardiac output system...
September 22, 2016: Journal of the Formosan Medical Association, Taiwan Yi Zhi
Jonatan Myrup Staalsø, Kim Zillo Rokamp, Niels D Olesen, Lars Lonn, Niels H Secher, Niels V Olsen, Teit Mantoni, Ulf Helgstrand, Henning B Nielsen
BACKGROUND: Gly16arg polymorphism of the adrenergic β2-receptor is associated with the elevated cardiac output (Q) in healthy gly16-homozygotic subjects. We questioned whether this polymorphism also affects Q and regional cerebral oxygen saturation (SCO2) during anesthesia in vascular surgical patients. METHODS: One hundred sixty-eight patients (age 71 ± 6 years) admitted for elective surgery were included. Cardiovascular variables were determined before and during anesthesia by intravascular pulse contour analysis (Nexfin) and SCO2 by cerebral oximetry (INVOS 5100C)...
December 2016: Anesthesia and Analgesia
T G V Cherpanath, B F Geerts, J J Maas, R B P de Wilde, A B Groeneveld, J R Jansen
BACKGROUND: Ventilator-induced dynamic hemodynamic parameters such as stroke volume variation (SVV) and pulse pressure variation (PPV) have been shown to predict fluid responsiveness in contrast to static hemodynamic parameters such as central venous pressure (CVP). We hypothesized that the ventilator-induced central venous pressure variation (CVPV) could predict fluid responsiveness. METHODS: Twenty-two elective cardiac surgery patients were studied post-operatively on the intensive care unit during mechanical ventilation with tidal volumes of 6-8 ml/kg without spontaneous breathing efforts or cardiac arrhythmia...
November 2016: Acta Anaesthesiologica Scandinavica
D C Chan, J Pang, P H R Barrett, D R Sullivan, T A Mori, J R Burnett, F M van Bockxmeer, G F Watts
BACKGROUND AND AIMS: Increased arterial stiffness is closely linked with raised blood pressure that contributes substantially to enhanced risk of coronary heart disease in high risk individuals with familial hypercholesterolaemia (FH). Omega-3 fatty acid (ω3-FA) supplementation has been demonstrated to lower blood pressure in subjects with a high cardiovascular disease risk. Whether ω3-FA supplementation improves arterial stiffness in FH subjects, on background statin therapy, has yet to be investigated...
December 2016: Nutrition, Metabolism, and Cardiovascular Diseases: NMCD
Yi-Lun Chiang, Pei-Chi Chen, Chin-Cheng Lee, Su-Kiat Chua
BACKGROUND: Pheochromocytoma is an endocrine tumor that causes hypertension, facial pallor, and headache. Pheochromocytoma patients rarely present with acute heart failure or cardiogenic shock. METHOD: We discuss the case of a female patient with Takotsubo-pattern cardiomyopathy who presented with acute heart failure caused by pheochromocytoma. RESULT: Treatment was adjusted based on the data of the pulse contour cardiac output system. After intensive hydration and medication for heart failure, the condition of the patient stabilized...
September 2016: Medicine (Baltimore)
José M Alonso-Iñigo, Francisco J Escribá, José I Carrasco, María J Fas, Pilar Argente, José M Galvis, José E Llopis
BACKGROUND: Pressure recording analytical method (PRAM) is a novel, arterial pulse contour method for measuring cardiac output (CO). Validation studies of PRAM in children are few, and have shown contradictory results. The aim of the study was to compare the MostCare(®) -PRAM vs the Fick method of cardiac output estimation (reference method). METHODS: This is a single-center, prospective observational study in 52 pediatric patients who underwent diagnostic right and left heart catheterization...
November 2016: Paediatric Anaesthesia
Bernhard Wernly, Michael Lichtenauer, Marcus Franz, Michael Fritzenwanger, Bjoern Kabisch, Hans-Reiner Figulla, Christian Jung
BACKGROUND: Heart failure is known to be a major public health problem. Fluid redistribution contributes to acute heart failure; therefore, knowledge of hemodynamic parameters could be important for optimizing outcomes. The pulse contour cardiac output monitor PiCCO uses the single thermal indicator technique and pulse contour analysis to calculate hemodynamic parameters of preload, afterload, cardiac output, systemic vascular resistance and extravascular lung water. OBJECTIVES: We primarily aimed to describe values and parameters seen in acute heart failure patients admitted to the intensive care unit (ICU) and secondly to investigate associations between hemodynamic measurements and survival data...
August 15, 2016: Wiener Klinische Wochenschrift
Michael Dahl, Chris Hayes, Bodil Steen Rasmussen, Anders Larsson, Niels H Secher
BACKGROUND: Whether during spontaneous breathing arterial pressure variations (APV) can detect a volume deficit is not established. We hypothesized that amplification of intra-thoracic pressure oscillations by breathing through resistors would enhance APV to allow identification of a reduced cardiac output (CO). This study tested that hypothesis in healthy volunteers exposed to central hypovolemia by head-up tilt. METHODS: Thirteen healthy volunteers were exposed to central hypovolemia by 45° head-up tilt while breathing through a facemask with 7...
2016: BMC Anesthesiology
Akila Rajakumar, Shiwalika Gupta, Selvakumar Malleeswaran, Joy Varghese, Ilankumaran Kaliamoorthy, Mohamed Rela
BACKGROUND AND AIMS: The perioperative management of patients presenting for simultaneous liver and kidney transplantation (SLKT) is a complex process. We analysed SLKTs performed in our institution to identify preoperative, intraoperative and post-operative challenges encountered in the management. METHODS: We retrospectively studied the case records of 12 patients who underwent SLKT between 2009 and 2014 and analysed details of pre-operative evaluation and optimisation, intraoperative anaesthetic management and the implications of use of perioperative continuous renal replacement therapy (CRRT) and the post-operative course of these patients...
July 2016: Indian Journal of Anaesthesia
J Grensemann, J M Defosse, C Wieland, U W Wild, F Wappler, S G Sakka
Monitoring of cardiac index (CI) by uncalibrated pulse contour (PC) methods has been shown to be inaccurate in critically ill patients. We tested accuracy and trending of a new pulse contour method and a modified Fick method using central venous oxygen saturation. We studied 21 critically ill and mechanically ventilated patients (age 20-86 years) monitored by PC (PulsioFlex®) and transpulmonary thermodilution (TPTD, PiCCO2®) as reference. At baseline, reference and PC-derived CI (CIPC) were recorded and CI obtained by Fick's method (FM, CIFICK)...
July 2016: Anaesthesia and Intensive Care
Thomas Kratz, Christina Simon, Volker Fendrich, Ralph Schneider, Hinnerk Wulf, Caroline Kratz, Turgay Efe, Karl F Schüttler, Martin Zoremba
BACKGROUND: Goal directed fluid management in major abdominal surgery has shown to reduce perioperative complications. The approach aims to optimize the intravascular fluid volume by use of minimally invasive devices which calculate flow-directed variables such as stroke volume (SV) and stroke volume variation (SVV). OBJECTIVE: We aimed to show the feasibility of routinely implementing this type of hemodynamic monitoring during pancreatic surgery, and to evaluate its effects in terms of perioperative fluid management and postoperative outcomes...
July 8, 2016: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
K Hallén, O Stenqvist, S-E Ricksten, S Lindgren
BACKGROUND: Isocapnic hyperventilation (IHV) is a method that fastens weaning from inhalation anaesthesia by increasing airway concentration of carbon dioxide (CO2 ) during hyperventilation (HV). In an animal model, we evaluated a technique of adding CO2 directly to the breathing circuit of a standard anaesthesia apparatus. METHODS: Eight anaesthetised pigs weighing 28 ± 2 kg were intubated and mechanically ventilated. From a baseline ventilation of 5 l/min, HV was achieved by doubling minute volume and fresh gas flow...
October 2016: Acta Anaesthesiologica Scandinavica
Marc-Olivier Fischer, Momar Diouf, Robert B P de Wilde, Hervé Dupont, Jean-Luc Hanouz, Emmanuel Lorne
Cardiac output measurement with pulse contour analysis is a continuous, mini-invasive, operator-independent, widely used, and cost-effective technique, which could be helpful to assess changes in cardiac output. The 4-quadrant plot and the polar plot have been described to compare the changes between 2 measurements performed under different conditions, and the direction of change by using different methods of measurements. However, the 4-quadrant plot and the polar plot present a number of limitations, with a risk of misinterpretation in routine clinical practice...
June 2016: Medicine (Baltimore)
Diana Riknagel, Birthe Dinesen, Henrik Zimmermann, Richard Farlie, Samuel Schmidt, Egon Toft, Johannes Jan Struijk
This observational study investigated digital auscultation for the purpose of assessing the clinical feasibility of monitoring vascular sounds in pregnancy. The study was performed at the Regional Hospital Viborg, Denmark, and included 29 pregnant women, 10 non-pregnant women and 10 male participants. Digital auscultation was performed with an electronic stethoscope bilaterally near the uterine arteries and correlated to the clinical diagnosis of preeclampsia (PE), intrauterine growth restriction (IUGR) or normal pregnancy in the group of pregnant participants...
July 2016: Physiological Measurement
Ruud F Spee, Victor M Niemeijer, Thijs Schoots, Pieter F Wijn, Pieter A Doevendans, Hareld M Kemps
Oxygen uptake (V̇o2) kinetics are prolonged in patients with chronic heart failure (CHF). This may be caused by impaired oxygen delivery or skeletal muscle derangements. We investigated whether impaired cardiac output (Q̇) kinetics limit skeletal muscle oxygen delivery relative to the metabolic demands at submaximal exercise in CHF patients by evaluating the relation between Q̇ kinetics and skeletal muscle deoxygenation. Forty-three CHF patients, NYHA II-III, performed a constant-load exercise test at 80% of the ventilatory aerobic threshold (VAT) to assess V̇o2 kinetics (τV̇o2)...
July 1, 2016: Journal of Applied Physiology
J Y Wagner, M Langemann, G Schön, S Kluge, D A Reuter, B Saugel
The T-Line(®) system (Tensys(®) Medical Inc., San Diego, CA, USA) non-invasively estimates cardiac output (CO) using autocalibrating pulse contour analysis of the radial artery applanation tonometry-derived arterial waveform. We compared T-Line CO measurements (TL-CO) with invasively obtained CO measurements using transpulmonary thermodilution (TDCO) and calibrated pulse contour analysis (PC-CO) in patients after major gastrointestinal surgery. We compared 1) TL-CO versus TD-CO and 2) TL-CO versus PC-CO in 27 patients treated in the intensive care unit (ICU) after major gastrointestinal surgery...
May 2016: Anaesthesia and Intensive Care
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"