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Cvp central venous pressure

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https://www.readbyqxmd.com/read/28100526/comparison-of-different-techniques-of-central-venous-pressure-measurement-in-mechanically-ventilated-critically-ill-patients
#1
C Roger, L Muller, B Riou, N Molinari, B Louart, H Kerbrat, J-L Teboul, J-Y Lefrant
BACKGROUND: Several techniques exist for measuring central venous pressure (CVP) but little information is available about the accuracy of each method. The aim of this study was to compare different methods of CVP measurements in mechanically ventilated patients. METHODS: CVP was measured in mechanically ventilated patients without spontaneous breathing using four different techniques: 1) end expiratory CVP measurement at the base of the" c" wave (CVPMEASURED), chosen as the reference method; 2) CVP measurement from the monitor averaging CVP over the cardiac and respiratory cycles (CVPMONITOR); 3) CVP measurement after a transient withdrawing of mechanical ventilation (CVPNADIR); 4) CVP measurement corrected for the transmitted respiratory pressure induced by intrinsic PEEP (calculated CVP: CVPCALCULATED)...
February 2017: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/28065586/estimation-of-central-venous-pressure-using-the-ratio-of-short-to-long-diameter-from-cross-sectional-images-of-the-inferior-vena-cava
#2
Yoshihiro Seo, Noriko Iida, Masayoshi Yamamoto, Tomoko Machino-Ohtsuka, Tomoko Ishizu, Kazutaka Aonuma
BACKGROUND: Long-axis images of the inferior vena cava (IVC) have limitations as surrogates for IVC morphology in grading central venous pressure (CVP) by two-dimensional echocardiography (2DE), because of the various cross-sectional morphologies and the translational motion of the IVC induced by sniffing. On the basis of the relationship between venous pressure and compliance, it was hypothesized that the cross-sectional morphology of the IVC, which was obtained using three-dimensional echocardiography, might estimate CVP more accurately compared with standard grading by 2DE...
January 5, 2017: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/28054191/central-venous-pressure-drop-after-hypovolemic-phlebotomy-is-a-strong-independent-predictor-of-intraoperative-blood-loss-during-liver-resection
#3
Andries Ryckx, Claudine Christiaens, Mathias Clarysse, Franky Vansteenkiste, Pieter Jan Steelant, Gregory Sergeant, Isabelle Parmentier, Hans Pottel, Mathieu D'Hondt
BACKGROUND: Intraoperative hypovolemic phlebotomy (HP) has been suggested to reduce central venous pressure (CVP) before hepatectomy. This study aimed to analyze the impact of CVP drop after HP on intraoperative blood loss and postoperative renal function. METHODS: A retrospective review of a prospective database including 100 consecutive patients (43 males and 57 females; mean age, 65 years; range 23-89 years) undergoing liver resection with HP was performed. The primary outcome variable was estimated blood loss (EBL), and the secondary outcome was postoperative serum creatinin (Scr)...
January 4, 2017: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/28018763/predicting-central-venous-pressure-by-measuring-femoral-venous-diameter-using-ultrasonography
#4
Akram Malik, Aftab Akhtar, Shoab Saadat, Salman Mansoor
OBJECTIVES: The objective of this exploratory study was to find out the correlation of femoral vein diameter (FVD) to central venous pressure (CVP) measurements and to derive a prediction equation to help ascertain the fluid volume status in a critical patient. PATIENTS AND METHODS: This was a single-centered prospective cohort study designed and conducted by the critical care department of Shifa International hospital in Islamabad, Pakistan. Patients were enrolled from the medical and surgical intensive care units...
November 23, 2016: Curēus
https://www.readbyqxmd.com/read/28012012/the-influence-of-peep-and-positioning-on-central-venous-pressure-and-venous-hepatic-hemodynamics-in-patients-undergoing-liver-resection
#5
Asi Ukere, Sebastian Meisner, Gillis Greiwe, Benjamin Opitz, Daniel Benten, Björn Nashan, Lutz Fischer, Constantin J C Trepte, Daniel A Reuter, Sebastian A Haas, Christoph R Behem
PURPOSE: In order to assess the occurrence of blood congestion in the liver during liver resection, we aimed to evaluate the influence of a positive-end-expiratory-pressure (PEEP) and positioning of patients on central venous pressure (CVP) and venous hepatic blood flow parameters. We further analyzed correlations between CVP and venous hepatic blood flow parameters. METHODS: In 20 patients scheduled for elective liver resection we measured CVP and quantified venous hepatic hemodynamics by ultrasound assessment of flow-velocity and diameter of the right hepatic vein and the portal vein after equilibration following these maneuvers: M1: 0° supine position, PEEP 0 cmH2O; M2: 0° supine position, PEEP 10 cmH2O; M3: 20° reverse-trendelenburg position; PEEP 10 cmH2O; M4: 20° reverse-trendelenburg position, PEEP 0cmH2O...
December 23, 2016: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/27968811/a-review-of-central-venous-pressure-and-its-reliability-as-a-hemodynamic-monitoring-tool-in-veterinary-medicine
#6
REVIEW
Kristen M Hutchinson, Scott P Shaw
OBJECTIVE: To review the current literature regarding central venous pressure (CVP) in veterinary patients pertaining to placement (of central line), measurement, interpretation, use in veterinary medicine, limitations, and controversies in human medicine. ETIOLOGY: CVP use in human medicine is a widely debated topic, as numerous sources have shown poor correlation of CVP measurements to the volume status of a patient. Owing to the ease of placement and monitoring in veterinary medicine, CVP remains a widely used modality for evaluating the hemodynamic status of a patient...
September 2016: Topics in Companion Animal Medicine
https://www.readbyqxmd.com/read/27931033/low-positive-airway-pressure-without-positive-end-expiratory-pressure-decreases-blood-loss-during-hepatectomy-in-living-liver-donors
#7
Tomohiro Iguchi, Toru Ikegami, Tetsuhiro Fujiyoshi, Tomoharu Yoshizumi, Ken Shirabe, Yoshihiko Maehara
BACKGROUND/AIMS: Despite the development of strategies to minimize blood loss during hepatectomy challenges remain. Our aim was to determine whether low positive airway pressure (PAP) without positive end-expiratory pressure (PEEP) could minimize blood loss during hepatectomy. METHODS: Forty-one living liver donors who underwent extended left lobectomy or right lobectomy between December 2012 and November 2013 were retrospectively analyzed. In the standard PAP group (n = 18), tidal volume was 8-10 ml/kg, respiratory rate was 10-12/min and PEEP was maintained at 5 cm H2O...
December 9, 2016: Digestive Surgery
https://www.readbyqxmd.com/read/27908340/end-points-of-sepsis-resuscitation
#8
REVIEW
John C Greenwood, Clinton J Orloski
Resuscitation goals for the patient with sepsis and septic shock are to return the patient to a physiologic state that promotes adequate end-organ perfusion along with matching metabolic supply and demand. Ideal resuscitation end points should assess the adequacy of tissue oxygen delivery and oxygen consumption, and be quantifiable and reproducible. Despite years of research, a single resuscitation end point to assess adequacy of resuscitation has yet to be found. Thus, the clinician must rely on multiple end points to assess the patient's overall response to therapy...
February 2017: Emergency Medicine Clinics of North America
https://www.readbyqxmd.com/read/27903511/cardiac-remodeling-and-increased-central-venous-pressure-underlie-elevated-stroke-volume-and-cardiac-output-of-seawater-acclimated-rainbow-trout
#9
Jeroen Brijs, Erik Sandblom, Esmée Dekens, Joacim Näslund, Andreas Ekström, Michael Axelsson
Substantial increases in cardiac output (CO), stroke volume (SV), and gastrointestinal blood flow are essential for euryhaline rainbow trout (Oncorhyncus mykiss) osmoregulation in seawater. However, the underlying hemodynamic mechanisms responsible for these changes are unknown. By examining a range of circulatory and cardiac morphological variables of seawater- and freshwater-acclimated rainbow trout, the present study revealed a significantly higher central venous pressure (CVP) in seawater-acclimated trout (~0...
January 1, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/27878445/can-non-invasive-ventilation-modify-central-venous-pressure-comparison-between-invasive-measurement-and-ultrasonographic-evaluation
#10
Maurizio Zanobetti, Alessio Prota, Alessandro Coppa, Laura Giordano, Sofia Bigiarini, Peiman Nazerian, Francesca Innocenti, Alberto Conti, Federica Trausi, Simone Vanni, Giuseppe Pepe, Riccardo Pini
Central venous pressure (CVP) is primarily measured to assess intravascular volume status and heart preload. In clinical practice, the measuring device most commonly used in emergency departments and intensive care units, is an electronic transducer that interconnects a central venous catheter (CVC) with a monitoring system. Non-invasive ventilation (NIV) consists in a breathing support that supplies a positive pressure in airways through a mask or a cask though not using an endotracheal prosthesis. In emergency settings, non-invasive ultrasonography evaluation of CVP, and hence of intravascular volume status entail the measurement by a subxiphoid approach of inferior vena cava diameter and its variations in relation to respiratory activity...
November 22, 2016: Internal and Emergency Medicine
https://www.readbyqxmd.com/read/27872408/active-expiration-and-the-measurement-of-central-venous-pressure
#11
Sheldon Magder, Karim Serri, Sara Verscheure, Renée Chauvin, Peter Goldberg
PURPOSE: To obtain a point prevalence estimate of alterations in central venous pressure (CVP) produced by active expiration in a consecutive series of intensive care patients. METHODS: We evaluated CVP tracings taken by the nurses at their morning shift change in a consecutive series of 60 cardiac surgery and 59 noncardiac surgery patients. We also assessed change in values due to the change in transducer level. Three physicians and a nurse instructor independently reviewed the tracings and determined whether there was evidence of forced expiration and whether it was type A, defined by decreasing CVP during expiration, or type B, defined by increasing CVP during expiration...
November 20, 2016: Journal of Intensive Care Medicine
https://www.readbyqxmd.com/read/27819002/diagnosis-accuracy-of-mean-arterial-pressure-variation-during-a-lung-recruitment-maneuver-to-predict-fluid-responsiveness-in-thoracic-surgery-with-one-lung-ventilation
#12
Woon-Seok Kang, Chung-Sik Oh, Chulmin Park, Bo Mi Shin, Tae-Gyoon Yoon, Ka-Young Rhee, Nam-Sik Woo, Seong-Hyop Kim
: Background. Lung recruitment maneuver (LRM) during thoracic surgery can reduce systemic venous return and resulting drop in systemic blood pressure depends on the patient's fluid status. We hypothesized that changes in systemic blood pressure during the transition in LRM from one-lung ventilation (OLV) to two-lung ventilation (TLV) may provide an index to predict fluid responsiveness. Methods. Hemodynamic parameters were measured before LRM (T0); after LRM at the time of the lowest mean arterial blood pressure (MAP) (T1) and at 3 minutes (T2); before fluid administration (T3); and 5 minutes after ending it (T4)...
2016: BioMed Research International
https://www.readbyqxmd.com/read/27815151/right-atrial-pressure-in-the-critically-ill-how-to-measure-what-is-the-value-what-are-the-limitations
#13
REVIEW
Sheldon Magder
Right atrial pressure (Pra) is determined by the interaction of the function of the heart as a pump, called cardiac function, and the factors that determine the return of blood to heart, called return function. Thus, monitoring Pra or its surrogate, central venous pressure (CVP), can give important insights into mechanisms behind changes in hemodynamic status, responses to interventions, and the likelihood of diagnoses. Examination of the components of the Pra tracing, especially during the ventilator cycle, also can give information about right heart diastolic function, status of the tricuspid valve, volume responsiveness and the cardiac rhythm...
November 1, 2016: Chest
https://www.readbyqxmd.com/read/27788791/intraoperative-pleth-variability-index-is-linked-to-delayed-graft-function-after-kidney-transplantation
#14
O Collange, L Jazaerli, A Lejay, C Biermann, S Caillard, B Moulin, N Chakfe, F Severac, M Schaeffer, P-M Mertes, A Steib
BACKGROUND: Delayed graft function (DGF) is an early postoperative complication of kidney transplantation (KT) predisposing to acute rejection and lower graft survival. Intraoperative arterial hypotension and hypovolemia are associated with DGF. Central venous pressure (CVP) is used to estimate volemia but its reliability has been criticized. Pleth variability index (PVI) is a hemodynamic parameter predicting fluid responsiveness. The aim of this study was to examine the relationship between intraoperative PVI and CVP values and the occurrence of DGF...
October 2016: Transplantation Proceedings
https://www.readbyqxmd.com/read/27777780/initial-central-venous-pressure-could-be-a-prognostic-marker-for-hemodynamic-improvement-of-polymyxin-b-direct-hemoperfusion-a-retrospective-cohort-study
#15
Hiroyuki Yamada, Tatsuo Tsukamoto, Hiromichi Narumiya, Kazumasa Oda, Satoshi Higaki, Ryoji Iizuka, Motoko Yanagita, Masako Deguchi
BACKGROUND: Direct hemoperfusion with polymyxin B-immobilized fiber column (PMX-DHP) could improve the hemodynamic status of septic shock patients. As PMX-DHP is an invasive and costly procedure, it is desirable to estimate the therapeutic effect before performing the therapy. However, it is still unclear when this therapy should be started and what type of sepsis it should be employed for. In this study, we retrospectively examined the clinical effect of patients treated with PMX-DHP by using central venous pressure (CVP)...
2016: Journal of Intensive Care
https://www.readbyqxmd.com/read/27773456/clinical-hemodynamic-evaluation-of-patients-implanted-with-a-fully-magnetically-levitated-left-ventricular-assist-device-heartmate-3
#16
Nir Uriel, Sirtaz Adatya, Jiří Malý, Eric Kruse, Daniel Rodgers, Gerald Heatley, Aleš Herman, Poornima Sood, Dominik Berliner, Johann Bauersachs, Axel Haverich, Michael Želízko, Jan D Schmitto, Ivan Netuka
BACKGROUND: The HeartMate 3 (HM3) is a Conformiteé Européenne (CE) mark-approved left ventricular assist device (LVAD) with a fully magnetically levitated rotor with features consisting of a wide range of operational speeds, wide flow paths and an artificial pulse. We performed a hemodynamic and echocardiographic evaluation of patients implanted with the HM3 LVAD to assess the speed range for optimal hemodynamic support. METHODS: Sixteen HM3 patients underwent pump speed ramp tests with right heart catheterization (including central venous pressure [CVP], pulmonary artery pressure, pulmonary capillary wedge pressure [PCWP] and blood pressure [BP]) and 3-dimensional echocardiography (3DE)...
July 17, 2016: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/27762259/inferior-vena-cava-collapsibility-index-is-a-valuable-and-non-invasive-index-for-elevated-general-heart-end-diastolic-volume-index-estimation-in-septic-shock-patients
#17
Jie Zhao, Guolin Wang
BACKGROUND This study aimed to investigate the relationship between the inferior vena cava respirophasic variation (IVC collapsibility index [IVCCI]) and the general heart end-diastolic volume index (GEDVI). By determining the above relationship, we could evaluate the utility of IVCCI as an indicator. MATERIAL AND METHODS Forty-two septic patients were finally enrolled in this study. The inferior vena cava's diameter was measured with the largest at the end of expiration (IVC3) and with the smallest at the end of inspiration (IVCi) on the ultrasound (IVCCI=[(IVCD e - IVCD i)/IVCD e] ×100%)...
October 20, 2016: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/27737348/noradrenaline-and-dobutamine-effects-on-the-volume-expansion-with-normal-saline-in-rabbits-subjected-to-hemorrhage
#18
Gualter Lisboa Ramalho, Matheus Fachini Vane, Luciana Cavalcanti Lima, Lucas Fachini Vane, Rosa Beatriz Amorim, Maria Aparecida Domingues, José Mariano Soares de Moraes, Lídia Raquel de Carvalho, Pedro Paulo Tanaka, Luiz Antonio Vane
PURPOSE: To evaluate the effects of dobutamine (DB), noradrenaline (NA), and their combination (NADB), on volume retention in rabbits submitted to hemorrhage. METHODS: Thirty six rabbits were randomly divided into 6 groups: SHAM, Control, Saline, DB, NA, DB+NA. All the animals, except for SHAM, were subjected to hemorrhage of 25% of the calculated blood volume. Control animals were replaced with their own blood. The other groups received NSS 3 times the volume withdrawn...
September 2016: Acta Cirúrgica Brasileira
https://www.readbyqxmd.com/read/27716694/perioperative-utility-of-goal-directed-therapy-in-high-risk-cardiac-patients-undergoing-coronary-artery-bypass-grafting-a-clinical-outcome-and-biomarker-based-study
#19
Poonam Malhotra Kapoor, Rohan Magoon, Rajinder Rawat, Yatin Mehta
Goal-directed therapy (GDT) encompasses guidance of intravenous (IV) fluid and vasopressor/inotropic therapy by cardiac output or similar parameters to help in early recognition and management of high-risk cardiac surgical patients. With the aim of establishing the utility of perioperative GDT using robust clinical and biochemical outcomes, we conducted the present study. This multicenter randomized controlled study included 130 patients of either sex, with European system for cardiac operative risk evaluation ≥3 undergoing coronary artery bypass grafting on cardiopulmonary bypass...
October 2016: Annals of Cardiac Anaesthesia
https://www.readbyqxmd.com/read/27686439/-the-correlation-between-optic-nerve-sheath-diameter-and-volume-status-in-patients-after-cardiac-surgery
#20
H Chen, X T Wang, X Ding, H M Zhang, H Zhao, Y G Chao, W He, D W Liu
Objective: To investigate the relationship between optic nerve sheath diameter (ONSD) and volume status of patients after cardiac surgery. Methods: A total of consecutive 56 patients who were treated in Critical Care Unit in Peking Union Medical College Hospital after open heart surgery from January to August 2015 were screened in this study. Central venous pressure (CVP) and 72 h net fluid balance were monitored. ONSD and diameter of inferior vena cava (IVC) were measured by ultrasound. Results: A total of 44 patients were finally included in the study...
October 1, 2016: Zhonghua Nei Ke za Zhi [Chinese Journal of Internal Medicine]
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