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Invasive hemodynamic monitoring

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https://www.readbyqxmd.com/read/28636889/complications-of-hematopoietic-stem-transplantation-fungal-infections
#1
REVIEW
Ali S Omrani, Reem S Almaghrabi
Patients undergoing allogeneic hematopoietic stem cell transplantation (HSCT) are at increased risk of invasive fungal infections, especially during the early neutropenic phase and severe graft-versus-host disease. Mold-active prophylaxis should be limited to the highest risk groups. Empiric antifungal therapy for HSCT with persistent febrile neutropenia is associated with unacceptable response rates, unnecessary antifungal therapy, increased risk of toxicity, and inflated costs. Empiric therapy should not be a substitute for detailed work up to identify the cause of fever in such patients...
June 13, 2017: Hematology/oncology and Stem Cell Therapy
https://www.readbyqxmd.com/read/28631103/transesophageal-echocardiography-in-orthotopic-liver-transplantation-a-comprehensive-intraoperative-monitoring-tool
#2
REVIEW
Luigi Vetrugno, Federico Barbariol, Umberto Baccarani, Francesco Forfori, Giovanni Volpicelli, Giorgio Della Rocca
Intraoperative transesophageal echocardiography is a minimally invasive monitoring tool that can provide real-time visual information on ventricular function and hemodynamic volume status in patients undergoing liver transplantation. The American Association for the Study of Liver Diseases states that transesophageal echocardiography should be used in all liver transplant candidates in order to assess chamber sizes, hypertrophy, systolic and diastolic function, valvular function, and left ventricle outflow tract obstruction...
December 2017: Critical Ultrasound Journal
https://www.readbyqxmd.com/read/28612302/a-simplified-lung-ultrasound-approach-to-detect-increased-extravascular-lung-water-in-critically-ill-patients
#3
Antonio Anile, Jole Russo, Giacomo Castiglione, Giovanni Volpicelli
BACKGROUND: The quantification of B-lines at lung ultrasonography is a valid tool to estimate the extravascular lung water (EVLW) in patients after major cardiac surgery. However, there is still uncertainty about the correlation between B-lines and EVLW in a general population of critically ill. AIM: To evaluate a simplified lung ultrasonographic assessment as a tool to estimate the EVLW in critically ill patients admitted to a polyvalent intensive care unit (ICU)...
December 2017: Critical Ultrasound Journal
https://www.readbyqxmd.com/read/28607340/perioperative-hemodynamic-optimization-based-on-a-totally-non-invasive-monitoring-device-waiting-for-more-convincing-evidence
#4
Agostino Roasio
No abstract text is available yet for this article.
June 12, 2017: Minerva Anestesiologica
https://www.readbyqxmd.com/read/28604571/hvad-waveform-analysis-as-a-noninvasive-marker-of-pulmonary-capillary-wedge-pressure-a-first-step-toward-the-development-of-a-smart-left-ventricular-assist-device-pump
#5
Jonathan Grinstein, Daniel Rodgers, Sara Kalantari, Gabriel Sayer, Gene H Kim, Nitasha Sarswat, Sirtaz Adatya, Takeyoshi Ota, Valluvan Jeevanandam, Daniel Burkhoff, Nir Uriel
Flow waveforms are an important feature of the HVAD left ventricular assist device (LVAD) that provides information about HVAD function and patient hemodynamics. We assessed the properties of one specific aspect of the waveform, the slope of the ventricular filling phase (VFP), and its correlation with pulmonary capillary wedge pressure (PCWP). A total of 101 screenshots from the HVAD monitor and simultaneous hemodynamic measurements were obtained simultaneously during sequential stages of invasive hemodynamic ramp studies...
June 7, 2017: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/28603000/validation-of-a-defibrillation-lead-ventricular-volume-measurement-compared-to-3d-echocardiography
#6
David E Haines, Wilson Wong, Robert Canby, Coty Jewell, Mahmoud Houmsse, David Pederson, Lissa Sugeng, John Porterfield, Anil Kottam, John Pearce, Jon Valvano, Joel Michalek, Aron Trevino, Sandeep Sagar, Marc D Feldman
BACKGROUND: There is increasing evidence that using frequent invasive measures of pressure in heart failure patients results in improved outcomes compared to traditional measures. Admittance, a measure of volume derived from pre-existing defibrillation leads is proposed as a new technique to monitor cardiac hemodynamics in patients with implantable defibrillators. OBJECTIVES: The goal of this work was to evaluate the accuracy of a new ventricular volume sensor (VVS, CardioVol), compared with 3D Echocardiography (echo) in patients with implantable defibrillators...
June 8, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28584226/comparison-of-3-times-a-week-4-and-5-hour-in-center-hemodialysis-sessions-with-use-of-continuous-non-invasive-hemodynamic-monitoring
#7
Łukasz Czyżewski, Janusz Wyzgał, Janusz Sierdziński, Emilia Czyżewska, Jacek Smereka, Łukasz Szarpak
BACKGROUND Very aggressive ultrafiltration rate (lasting 3.5-4 h) may result in inadequate hemodialysis (HD). Our aim was to characterize HD-induced cardiovascular adaptation and its links to fluid removal during 4- vs. 5-h HD sessions. MATERIAL AND METHODS The study involved 50 HD patients. A Cardioscreen device (Messtechnik, Ilmenau, Germany) was used to perform non-invasive hemodynamic measurements during mid-week HD sessions. Body fluids and nutritional status were assessed with a Body Composition Monitor (Fresenius Medical Care)...
June 6, 2017: Annals of Transplantation: Quarterly of the Polish Transplantation Society
https://www.readbyqxmd.com/read/28583532/prediction-of-fluid-responsiveness-by-a-non-invasive-respiratory-systolic-time-interval-variation-using-heart-sound-signals-in-recipients-undergoing-liver-transplantation
#8
S-H Kim, Y-J Moon, J-W Kim, J-G Song, G-S Hwang
BACKGROUND: The fluid management of cirrhotic patients undergoing liver transplantation (LT) is challenging. Phonocardiography, a graphic recording of heart sounds, provides valuable information concerning heart function and hemodynamic condition. We assessed whether the systolic time interval (STI) and its respiratory variation could predict fluid responsiveness in cirrhotic patients undergoing LT. METHODS: Thirty LT recipients who needed volume expansion were included...
June 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28580340/a-system-for-continuous-estimating-and-monitoring-cardiac-output-via-arterial-waveform-analysis
#9
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/28580292/non-invasive-multimodal-analysis-of-cortical-activity-blood-volume-and-neurovascular-coupling-in-infantile-spasms-using-eeg-fnirs-monitoring
#10
Emilie Bourel-Ponchel, Mahdi Mahmoudzadeh, Aline Delignières, Patrick Berquin, Fabrice Wallois
Although infantile spasms can be caused by a variety of etiologies, the clinical features are stereotypical. The neuronal and vascular mechanisms that contribute to the emergence of infantile spasms are not well understood. We performed a multimodal study by simultaneously recording electroencephalogram and functional Near-infrared spectroscopy in an intentionally heterogeneous population of six children with spasms in clusters. Regardless of the etiology, spasms were accompanied by two phases of hemodynamic changes; an initial change in the cerebral blood volume (simultaneously with each spasm) followed by a neurovascular coupling in all children except for the one with a large porencephalic cyst...
2017: NeuroImage: Clinical
https://www.readbyqxmd.com/read/28552462/the-accuracy-of-picco%C3%A2-in-measuring-cardiac-output-in-patients-under-therapeutic-hypothermia-comparison-with-transthoracic-echocardiography
#11
T Souto Moura, S Aguiar Rosa, N Germano, R Cavaco, T Sequeira, M Alves, A L Papoila, L Bento
BACKGROUND: Invasive cardiac monitoring using thermodilution methods such as PiCCO® is widely used in critically ill patients and provides a wide range of hemodynamic variables, including cardiac output (CO). However, in post-cardiac arrest patients subjected to therapeutic hypothermia, the low body temperature possibly could interfere with the technique. Transthoracic Doppler echocardiography (ECHO) has long proved its accuracy in estimating CO, and is not influenced by temperature changes...
May 25, 2017: Medicina Intensiva
https://www.readbyqxmd.com/read/28497934/cerebral-autoregulation-monitoring-in-acute-traumatic-brain-injury-what-s-the-evidence
#12
Leanne A Calviello, Joseph Donnelly, Frederick A Zeiler, Eric P Thelin, Peter Smielewski, Marek Czosnyka
Cerebral autoregulation is conceptualized as a vascular self-regulatory mechanism within the brain. Controlled by elusive relationships between various biophysical processes, it functions to protect the brain against potential damages caused by sudden changes in cerebral perfusion pressures and flow. Following events such as traumatic brain injuries (TBI), autoregulation may be compromised, potentially leading to an unfavorable outcome. In spite of its complexity, autoregulation has been able to be quantified non-invasively within the neuro-critical care setting with the aid of transcranial Doppler...
May 12, 2017: Minerva Anestesiologica
https://www.readbyqxmd.com/read/28497189/quantification-of-mitral-regurgitation-during-percutaneous-mitral-valve-repair-added-value-of-simultaneous-hemodynamic-and-3d-echocardiographic-assessment
#13
Ilonka Rohm, Tudor C Poerner, Ali Hamadanchi, Sylvia Otto, Torsten Doenst, Christian Jung, P Christian Schulze, Björn Goebel
The objective of this study was to investigate the usefulness of intraprocedural hemodynamic monitoring for MR evaluation during pMRV. Assessment of mitral regurgitation (MR) during percutaneous mitral valve repair (pMVR) procedure is challenging. 3D color Doppler allows exact quantification of MR, but is technically demanding. Sixty patients with moderate to severe MR (14 with structural and 46 functional MR) were included in the study. Intraprocedural pressure curves were continuously obtained in the left atrium (LA) and left ventricle (LV)...
May 11, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28497180/performance-of-a-capnodynamic-method-estimating-effective-pulmonary-blood-flow-during-transient-and-sustained-hypercapnia
#14
Thorir Svavar Sigmundsson, Tomas Öhman, Magnus Hallbäck, Eider Redondo, Fernando Suarez Sipmann, Mats Wallin, Anders Oldner, Caroline Hällsjö Sander, Håkan Björne
The capnodynamic method is a minimally invasive method continuously calculating effective pulmonary blood flow (COEPBF), equivalent to cardiac output when intra pulmonary shunt flow is low. The capnodynamic equation joined with a ventilator pattern containing cyclic reoccurring expiratory holds, provides breath to breath hemodynamic monitoring in the anesthetized patient. Its performance however, might be affected by changes in the mixed venous content of carbon dioxide (CvCO2). The aim of the current study was to evaluate COEPBF during rapid measurable changes in mixed venous carbon dioxide partial pressure (PvCO2) following ischemia-reperfusion and during sustained hypercapnia in a porcine model...
May 11, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/28493526/real-time-mri-guidance-of-cardiac-interventions
#15
Adrienne E Campbell-Washburn, Mohammad A Tavallaei, Mihaela Pop, Elena K Grant, Henry Chubb, Kawal Rhode, Graham A Wright
Cardiac magnetic resonance imaging (MRI) is appealing to guide complex cardiac procedures because it is ionizing radiation-free and offers flexible soft-tissue contrast. Interventional cardiac MR promises to improve existing procedures and enable new ones for complex arrhythmias, as well as congenital and structural heart disease. Guiding invasive procedures demands faster image acquisition, reconstruction and analysis, as well as intuitive intraprocedural display of imaging data. Standard cardiac MR techniques such as 3D anatomical imaging, cardiac function and flow, parameter mapping, and late-gadolinium enhancement can be used to gather valuable clinical data at various procedural stages...
May 11, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28474097/advanced-hemodynamic-monitoring-in-intensive-care-medicine-a%C3%A2-german-web-based-survey-study
#16
B Saugel, P C Reese, J Y Wagner, M Buerke, W Huber, S Kluge, R Prondzinsky
BACKGROUND: Advanced hemodynamic monitoring is recommended in patients with complex circulatory shock. OBJECTIVES: To evaluate the current attitudes and beliefs among German intensivists, regarding advanced hemodynamic monitoring, the actual hemodynamic management in clinical practice, and the barriers to using it. MATERIALS AND METHODS: Web-based survey among members of the German Society of Medical Intensive Care and Emergency Medicine. RESULTS: Of 284 respondents, 249 (87%) agreed that further hemodynamic assessment is needed to determine the type of circulatory shock if no clear clinical diagnosis can be made...
May 4, 2017: Medizinische Klinik, Intensivmedizin und Notfallmedizin
https://www.readbyqxmd.com/read/28471443/the-role-of-near-infrared-spectroscopy-monitoring-in-preterm-infants
#17
P Korček, Z Straňák, J Širc, G Naulaers
Neurological morbidities such as peri/intraventricular hemorrhage and periventricular leukomalacia largely determine the neurodevelopmental outcome of vulnerable preterm infants and our aim should be to minimize their occurrence or severity. Bed-side neuromonitoring could provide valuable pieces of information about possible hemodynamic disturbances that are significantly associated with neurological morbidities and increased mortality. Near-infrared spectroscopy offers evaluation of regional cerebral oxygenation, which in conjunction with other non-invasive methods may give us a more complete picture about end-organ perfusion...
May 4, 2017: Journal of Perinatology: Official Journal of the California Perinatal Association
https://www.readbyqxmd.com/read/28466117/invasive-hemodynamic-assessment-of-patients-with-heart-failure-and-pulmonary-hypertension
#18
REVIEW
Rupa K Patil, Parag Goyal, Rajesh V Swaminathan, Luke K Kim, Dmitriy N Feldman
Right heart catheterization (RHC) with a pulmonary artery (PA) catheter is a minimally invasive method of obtaining hemodynamic data (e.g., right atrial and pulmonary pressures, cardiac output, pulmonary vascular resistance), which are used to diagnose and manage patients with advanced heart failure (HF), HF with preserved ejection fraction, and pulmonary hypertension (PH). Invasive hemodynamic data obtained from RHC can aid in the prognostication of HF and PH patients and are important in guiding decisions of implanting mechanical circulatory support devices and listing patients for heart and/or lung transplantation...
June 2017: Current Treatment Options in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28463939/validation-of-a-noninvasive-monitor-to-continuously-trend-individual-responses-to-hypovolemia
#19
Steven L Moulton, Jane Mulligan, Maria Antoinette Santoro, Khanh Bui, Gregory Z Grudic, David MacLeod
BACKGROUND: Humans are able to compensate for significant blood loss with little change in traditional vital signs, limiting early detection and intervention. We hypothesized that the Compensatory Reserve Index (CRI), a new hemodynamic parameter that trends changes in intravascular volume relative to the individual patient's response to hypovolemia, would accurately trend each subject's progression from normovolemia to decompensation (systolic blood pressure < 80) and back to normovolemia in humans...
July 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28437601/maternal-hemodynamics-in-normal-pregnancies-reference-ranges-and-the-role-of-maternal-characteristics
#20
Dimuthu Vinayagam, Baskaran Thilaganathan, Oliver Stirrup, Elena Mantovani, Asma Khalil
OBJECTIVES: The main aim of this study was to construct reference ranges of the maternal central hemodynamic parameters during pregnancy. The second aim was to determine the maternal and pregnancy characteristics, which influence these hemodynamic parameters. METHODS: This was a prospective cohort study of low-risk pregnant women attending for routine antenatal care at St George's Hospital, London. The exclusion criteria included any medical disorder present at the time of study recruitment, or development of hypertension or intrauterine fetal growth restriction following study recruitment...
April 24, 2017: Ultrasound in Obstetrics & Gynecology
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