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stroke volume variation

Nianfang Lu, Li Jiang, Bo Zhu, Wenyong Han, Yingqi Zhao, Yuntao Shi, Fashuang Guo, Xiuming Xi
OBJECTIVE: To explore the accuracy of fluid responsiveness assessment by variability of peripheral arterial peak velocity and variability of inferior vena cava diameter (ΔIVC) in patients with septic shock. METHODS: A prospective study was conducted. The patients with septic shock undergoing mechanical ventilation (MV) admitted to intensive care unit (ICU) of Beijing Electric Power Hospital from January 2016 to December 2017 were enrolled. According to sepsis bundles of septic shock, volume expansion (VE) was conducted...
March 2018: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
Jingyi Wu, Zhen Wang, Tao Wang, Tao Yu, Jing Yuan, Qingling Zhang, Weihua Lu, Xia Zhang
BACKGROUND: Prompt, accurate, and noninvasive prediction of fluid responsiveness is still lacking in intensive care unit. This study is to investigate the value of the Doppler ultrasound evaluation of variation in brachial artery peak velocity (VVpeakbrach ) and passive leg raising (PLR)-induced changes in the brachial artery peak velocity (ΔVpeakPLR ) in predicting the fluid responsiveness in mechanically ventilated patients with severe sepsis or septic shock. METHODS: A prospective study was conducted involving 62 patients...
April 2018: Journal of Surgical Research
Ani Stepanyan, Roksana Zakharyan, Arsen Simonyan, Gohar Tsakanova, Arsen Arakelyan
BACKGROUND: Despite the important role of the nerve growth factor in the survival and maintenance of neurons in ischemic stroke, data regarding the relationships between variations in the encoding gene and stroke are lacking. In the present study, we evaluated the association of the functional polymorphisms in NGF (rs6330) and NGFR (rs2072446 and rs734194) genes with ischemic stroke in an Armenian population. METHODS: In total, 370 unrelated individuals of Armenian nationality were enrolled in this study...
March 2, 2018: BMC Medical Genetics
Mona N Bahouth, R F Gottesman, S L Szanton
BACKGROUND AND PURPOSE: Hydration status at the time of stroke has been acknowledged as an important determinant in early stroke recovery. However, the diagnosis of dehydration, or more accurately, a volume-contracted state, at the time of stroke is challenging since there are currently no consensus diagnostic criteria. In this systematic review, we gather the available evidence about diagnosis and treatment of dehydration after stroke. METHODS: Studies of hospitalized ischemic stroke patients that reported rates of dehydration from January 1997 to March 2017 were screened for inclusion via a systematic search of PubMed, CINAHL, Cochrane, and Scopus using keywords hydration, dehydration, hemodilution, viscosity, volume status, and thirst...
March 1, 2018: Journal of Neurology
Simon Garnotel, Stéphanie Salmon, Olivier Balédent
OBJECTIVE: Cerebrospinal fluid (CSF) stroke volume in the aqueduct is widely used to evaluate CSF dynamics disorders. In a healthy population, aqueduct stroke volume represents around 10% of the spinal stroke volume while intracranial subarachnoid space stroke volume represents 90%. The amplitude of the CSF oscillations through the different compartments of the cerebrospinal system is a function of the geometry and the compliances of each compartment, but we suspect that it could also be impacted be the cardiac cycle frequency...
2018: Acta Neurochirurgica. Supplement
Min Hur, Seokha Yoo, Jung-Yoon Choi, Sun-Kyung Park, Dhong Eun Jung, Won Ho Kim, Jin-Tae Kim, Jae-Hyon Bahk
BACKGROUND: Dynamic change in central venous pressure (CVP) was associated with fluid responsiveness. External jugular venous pressure (EJVP) may reliably estimate CVP and have the advantages of being less invasive. We investigated whether increase in EJVP induced by positive end-expiratory pressure (PEEP) could be a reliable predictor of fluid responsiveness in patients undergoing robot-assisted laparoscopic prostatectomy (RALP). METHODS: Fifty patients who underwent RALP with steep Trendelenburg position were enrolled...
February 27, 2018: Journal of Anesthesia
Geetha Rayarao, Robert W W Biederman, Ronald B Williams, June A Yamrozik, Richard Lombardi, Mark Doyle
To establish the clinical validity and accuracy of automatic thresholding and manual trimming (ATMT) by comparing the method with the conventional contouring method for in vivo cardiac volume measurements. CMR was performed on 40 subjects (30 patients and 10 controls) using steady-state free precession cine sequences with slices oriented in the short-axis and acquired contiguously from base to apex. Left ventricular (LV) volumes, end-diastolic volume, end-systolic volume, and stroke volume (SV) were obtained with ATMT and with the conventional contouring method...
January 2018: Journal of Medical Imaging
María Lema Tome, Francisco Andrés De la Gala, Patricia Piñeiro, Luis Olmedilla, Ignacio Garutti
INTRODUCTION: In last few years, emphasis was placed in goal-directed therapy in order to optimize patient's hemodynamic status and improve their prognosis. Parameters based on the interaction between heart and lungs have been questioned in situations like low tidal volume and open chest surgery. The goal of the study was to analyze the changes that one-lung ventilation can produce over stroke volume variation and to assess the possible impact of airway pressures and lung compliance over stroke volume variation...
February 21, 2018: Revista Brasileira de Anestesiologia
M Ranjith, Prasanna Udupi Bidkar, K Narmadalakshmi, Praveen R Talawar
Background: Hemodynamic disturbances are common during positioning the patients from supine to sitting for neurosurgical procedures. The reported incidence of hypotension varies from 5% to 32%. The aim of the study was to study the effect of crystalloid preloading on hemodynamic parameters during positioning the patient from supine to sitting position. Materials and Methods: In this prospective observational trial, 20 patients were enrolled. Two patients had a patent foramen ovale on transesophageal echocardiography and were excluded from the study...
January 2018: Journal of Neurosciences in Rural Practice
Bernd Saugel, Daniel A Reuter
"Perioperative goal-directed therapy" (PGDT) aims at an optimization of basic and advanced global hemodynamic variables to maintain adequate oxygen delivery to the end-organs. PGDT protocols help to titrate fluids, vasopressors, or inotropes to hemodynamic target values. There is considerable evidence that PGDT can improve patient outcome in high-risk patients if both fluids and inotropes are administered to target hemodynamic variables reflecting blood flow. Despite this evidence, PGDT strategies aiming at an optimization of blood flow seem to be not well implemented in routine clinical care...
2018: Frontiers in Medicine
Renato Carneiro de Freitas Chaves, Thiago Domingos Corrêa, Ary Serpa Neto, Bruno de Arruda Bravim, Ricardo Luiz Cordioli, Fabio Tanzillo Moreira, Karina Tavares Timenetsky, Murillo Santucci Cesar de Assunção
Patients who increase stoke volume or cardiac index more than 10 or 15% after a fluid challenge are usually considered fluid responders. Assessment of fluid responsiveness prior to volume expansion is critical to avoid fluid overload, which has been associated with poor outcomes. Maneuvers to assess fluid responsiveness are well established in mechanically ventilated patients; however, few studies evaluated maneuvers to predict fluid responsiveness in spontaneously breathing patients. Our objective was to perform a systematic review of literature addressing the available methods to assess fluid responsiveness in spontaneously breathing patients...
February 9, 2018: Annals of Intensive Care
Michael L O'Byrne, Kevin F Kennedy, Jonathan J Rome, Andrew C Glatz
Practice variation is a potentially important measure of healthcare quality. The IMPACT registry provides a representative national sample with which to study practice variation in trans-catheter interventions for congenital heart disease. METHODS: We studied cases for closure of atrial septal defect (ASD) and patent ductus arteriosus (PDA) in IMPACT between January 1, 2011, and September 30, 2015, using hierarchical multivariate models studying (1) the distribution of indications for closure and (2) in patients whose indication for closure was left (LVVO) or right ventricular volume overload (RVVO), the factors influencing probability of closure of a small defect (either in size or in terms of the magnitude of shunt)...
February 2018: American Heart Journal
Xian Zhao, Yuhong Li, Hai-Ying Kong, Lin Zhang, Xiao-Hong Wen
RATIONALE: Survey data show approximately 10% patients with lung cancer may present concomitant coronary heart disease. Simultaneous surgery is a challenge for anesthetist. We review our experience in the anesthesia with 5 patients who required simultaneous off-pump coronary artery bypass grafting (OPCABG) and pulmonary resection for lung cancer. PATIENT CONCERNS: Between 2014 and 2016, 5 patients with ASA (American Society of Anesthesiologists) grade II or III, underwent combined OPCABG and lung resection in the first Affiliated Hospital, Zhejiang University School of Medicine...
December 2017: Medicine (Baltimore)
Hao-Yu Chiao, Chang-Yi Chou, Yuan-Sheng Tzeng, Chih-Hsin Wang, Shyi-Gen Chen, Niann-Tzyy Dai
BACKGROUND: Adequate fluid titration during the initial resuscitation period of major burn patients is crucial. This study aimed to evaluate the feasibility and efficacy of a goal-directed fluid resuscitation protocol that used hourly urine output plus the arterial waveform analysis FloTrac (Edwards LifeSciences, Irvine, Calif) system for major burns to avoid fluid overload. METHODS: We conducted a retrospective cohort study of 43 major burn patients at the Tri-Service General Hospital after the Formosa Fun Coast Dust Explosion on June 27, 2015...
February 2018: Annals of Plastic Surgery
Raphaël Giraud, Paul S Abraham, Pauline Brindel, Nils Siegenthaler, Karim Bendjelid
The present pilot study investigated whether respiratory variation in subclavian vein (SCV) diameters correlates with fluid responsiveness in mechanically ventilated patients. Monocentric, prospective clinical study on fluid responsiveness in adult sedated, mechanically ventilated ICU patient, monitored with the PiCCO™ system (Pulsion Medical System, Germany), and requiring a fluid challenge (FC). A 10-min fluid bolus of 500 mL of 0.9% saline was administered. Cardiac output (CO) and dynamic parameters [stroke volume variation (SVV) and pulse pressure variation (PPV)] measured by transpulmonary thermodilution and pulse contour analysis (PiCCO™) as well as classical hemodynamic parameters were recorded at baseline and after FC...
January 29, 2018: Journal of Clinical Monitoring and Computing
Donna C Tippett, Brittany R Godin, Kumiko Oishi, Kenichi Oishi, Cameron Davis, Yessenia Gomez, Lydia A Trupe, Eun Hye Kim, Argye E Hillis
Despite its basic and translational importance, the neural circuitry supporting the perception of emotional faces remains incompletely understood. Functional imaging studies and chronic lesion studies indicate distinct roles of the amygdala and insula in recognition of fear and disgust in facial expressions, whereas intracranial encephalography studies, which are not encumbered by variations in human anatomy, indicate a somewhat different role of these structures. In this article, we leveraged lesion-mapping techniques in individuals with acute right hemisphere stroke to investigate lesions associated with impaired recognition of prototypic emotional faces before significant neural reorganization can occur during recovery from stroke...
February 2018: Seminars in Speech and Language
Peng-Qian Wang, Qiong Liu, Wen-Juan Xu, Ya-Nan Yu, Ying-Ying Zhang, Bing Li, Jun Liu, Zhong Wang
Both baicalin (BA) and jasminoidin (JA) are active ingredients in Chinese herb medicine Scutellaria baicalensis and Fructus gardeniae, respectively. They have been shown to exert additive neuroprotective action in ischemic stroke models. In this study we used transcriptome analysis to explore the pure therapeutic mechanisms of BA, JA and their combination (BJ) contributing to phenotype variation and reversal of pathological processes. Mice with middle cerebral artery obstruction were treated with BA, JA, their combination (BJ), or concha margaritifera (CM)...
January 18, 2018: Acta Pharmacologica Sinica
Paolo Lentini, Luca Zanoli, Pasquale Fatuzzo, Faeq Husain-Syed, Rudi Stramanà, Diego Cognolato, Vincenzo Catena, Marco Baiocchi, Antonio Granata, Roberto Dell'Aquila
BACKGROUND: Patients undergoing abdominal aortic aneurysm (AAA) surgery with suprarenal clamping are at high risk for acute kidney injury (AKI) and major cardiac and cerebrovascular events (MACCE). We aimed to assess whether the stroke volume variation (SVV), a measure of hemodynamic instability, is associated with AKI in hypertensive patients undergoing elective AAA surgery with suprarenal clamping. METHODS: In a cohort of 51 hypertensive patients, we performed serial measurements of SVV (n = 459) and serum creatinine (sCr) (n = 255)...
January 17, 2018: Journal of Nephrology
Daniele Orso, Irene Paoli, Tommaso Piani, Francesco L Cilenti, Lorenzo Cristiani, Nicola Guglielmo
OBJECTIVE: Fluid responsiveness is the ability to increase the cardiac output in response to a fluid challenge. Only about 50% of patients receiving fluid resuscitation for acute circulatory failure increase their stroke volume, but the other 50% may worsen their outcome. Therefore, predicting fluid responsiveness is needed. In this purpose, in recent years, the assessment of the inferior vena cava (IVC) through ultrasound (US) has become very popular. The aim of our work was to systematically review all the previously published studies assessing the accuracy of the diameter of IVC or its respiratory variations measured through US in predicting fluid responsiveness...
January 1, 2018: Journal of Intensive Care Medicine
Guo-Guang Ma, Guang-Wei Hao, Xiao-Mei Yang, Du-Ming Zhu, Lan Liu, Hua Liu, Guo-Wei Tu, Zhe Luo
BACKGROUND: To evaluate the efficacy of using internal jugular vein variability (IJVV) as an index of fluid responsiveness in mechanically ventilated patients after cardiac surgery. METHODS: Seventy patients were assessed after cardiac surgery. Hemodynamic data coupled with ultrasound evaluation of IJVV and inferior vena cava variability (IVCV) were collected and calculated at baseline, after a passive leg raising (PLR) test and after a 500-ml fluid challenge. Patients were divided into volume responders (increase in stroke volume ≥ 15%) and non-responders (increase in stroke volume < 15%)...
January 16, 2018: Annals of Intensive Care
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