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Critical echocardiography

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https://www.readbyqxmd.com/read/28625165/transpulmonary-thermodilution-advantages-and-limits
#1
REVIEW
Xavier Monnet, Jean-Louis Teboul
BACKGROUND: For complex patients in the intensive care unit or in the operating room, many questions regarding their haemodynamic management cannot be answered with simple clinical examination. In particular, arterial pressure allows only a rough estimation of cardiac output. Transpulmonary thermodilution is a technique that provides a full haemodynamic assessment through cardiac output and other indices. MAIN BODY: Through the analysis of the thermodilution curve recorded at the tip of an arterial catheter after the injection of a cold bolus in the venous circulation, transpulmonary thermodilution intermittently measures cardiac output...
June 19, 2017: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/28595621/transthoracic-echocardiography-an-accurate-and-precise-method-for-estimating-cardiac-output-in-the-critically-ill-patient
#2
Pablo Mercado, Julien Maizel, Christophe Beyls, Dimitri Titeca-Beauport, Magalie Joris, Loay Kontar, Antoine Riviere, Olivier Bonef, Thierry Soupison, Christophe Tribouilloy, Bertrand de Cagny, Michel Slama
BACKGROUND: Cardiac output (CO) monitoring is a valuable tool for the diagnosis and management of critically ill patients. In the critical care setting, few studies have evaluated the level of agreement between CO estimated by transthoracic echocardiography (CO-TTE) and that measured by the reference method, pulmonary artery catheter (CO-PAC). The objective of the present study was to evaluate the precision and accuracy of CO-TTE relative to CO-PAC and the ability of transthoracic echocardiography to track variations in CO, in critically ill mechanically ventilated patients...
June 9, 2017: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/28592041/-the-effects-of-different-tidal-volume-ventilation-on-right-ventricular-function-in-critical-respiratory-failure-patients
#3
L X Liu, J Q Wu, Q Y Wu, Q Zhang, B Yu, S M Ge, Y Huo, X T Wang, Y G Chao, Z J Hu
Objective: To observe and explore the effects of different tidal volume (VT) ventilation on right ventricular (RV) function in patients with critical respiratory failure. Methods: Consecutive respiratory failure patients who were treated with invasive ventilator over 24 h in the Department of Critical Care Medicine at the Fourth Hospital of Hebei Medical University from June to December in 2015 were enrolled in this study.Clinical data including patients' vital signs, ventilator parameters and RV echocardiography were collected within 6 h (D0), day1(D1), day2 (D2) and day3 (D3) after ventilation started...
June 1, 2017: Zhonghua Nei Ke za Zhi [Chinese Journal of Internal Medicine]
https://www.readbyqxmd.com/read/28566819/neonates-with-critical-congenital-heart-defects-impact-of-fetal-diagnosis-on-immediate-and-short-term-outcomes
#4
Sylvia Michael Colaco, Tanuja Karande, Prashant Raviprakash Bobhate, Rashmi Jiyani, Suresh G Rao, Snehal Kulkarni
BACKGROUND: Fetal echocardiography is being increasingly used for prenatal diagnosis of congenital cardiac malformations, but its impact on the neonatal outcomes in low- and middle-income countries is still unknown. AIMS: The objective of this study is to determine the impact of fetal echocardiography on immediate postnatal and short-term outcome in a tertiary pediatric cardiac center. STUDY DESIGN: This is a prospective study. MATERIALS AND METHODS: One hundred consecutive patients with critical congenital heart defects (CHD) requiring active medical or surgical interventions in the 1(st) month of life were included in the study...
May 2017: Annals of Pediatric Cardiology
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
#5
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/28551719/t-wave-changes-in-patients-with-wellens-syndrome-are-associated-with-increased-myocardial-mechanical-and-electrical-dispersion
#6
Ivan Stankovic, Srdjan Kafedzic, Aleksandra Janicijevic, Radosava Cvjetan, Tijana Vulovic, Milica Jankovic, Ivan Ilic, Biljana Putnikovic, Aleksandar N Neskovic
Some patients with unstable angina and critical stenosis of the left anterior descending coronary artery (LAD) present with Wellens syndrome (WS), i.e., inverted or biphasic T-waves in the anterior precordial leads. We assessed clinical, angiographic, electro- and echocardiographic characteristic of patients with WS. In this retrospective study, clinical, angiographic, electro- and echocardiographic characteristic of 35 patients with WS were compared to 57 patients with critical LAD stenosis and normal resting electrocardiogram (ECG), and 45 subjects with normal coronary angiogram...
May 27, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28546773/successful-bipolar-ablation-for-ventricular-tachycardia-with-potential-substrate-identification-by-pre-procedural-cardiac-magnetic-resonance-imaging
#7
Kazuo Sakamoto, Masatsugu Nozoe, Yoshitomo Tsutsui, Nobuhiro Suematsu, Toru Kubota, Masanori Okabe, Yusuke Yamamoto
Cardiac magnetic resonance imaging (MRI) is a useful tool for detecting the arrhythmogenic substrate in cardiac sarcoidosis. We herein present a case of bipolar radiofrequency catheter ablation for ventricular tachycardia (VT) complicated with cardiac sarcoidosis, guided by pre-procedural cardiac MRI. Neither echocardiography nor endocardial voltage mapping suggested a septal VT substrate. However, MRI alone detected intramural lesions in the septum. Although application of endocardial energy failed to treat the VT, bipolar ablation targeting the potential substrate identified by MRI successfully eliminated the VT...
2017: International Medical Case Reports Journal
https://www.readbyqxmd.com/read/28540527/alignment-of-inducible-vascular-progenitor-cells-on-a-micro-bundle-scaffold-improves-cardiac-repair-following-myocardial-infarction
#8
Anurag Jamaiyar, Weiguo Wan, Vahagn Ohanyan, Molly Enrick, Danielle Janota, Devan Cumpston, Hokyung Song, Kelly Stevanov, Christopher L Kolz, Tatev Hakobyan, Feng Dong, Bi-Min Zhang Newby, William M Chilian, Liya Yin
Ischemic heart disease is still the leading cause of death even with the advancement of pharmaceutical therapies and surgical procedures. Early vascularization in the ischemic heart is critical for a better outcome. Although stem cell therapy has great potential for cardiovascular regeneration, the ideal cell type and delivery method of cells have not been resolved. We tested a new approach of stem cell therapy by delivery of induced vascular progenitor cells (iVPCs) grown on polymer micro-bundle scaffolds in a rat model of myocardial infarction...
July 2017: Basic Research in Cardiology
https://www.readbyqxmd.com/read/28528655/pulmonary-flow-as-an-improved-method-for-determining-cardiac-output-in-mice-after-myocardial-infarction
#9
Mathew J Platt, Jason S Huber, Keith R Brunt, Jeremy A Simpson
BACKGROUND: Echocardiography is a valuable noninvasive technique to estimate cardiac output (CO) from the left ventricle (LV) not only in clinical practice but also in small-animal experiments. CO is used to grade cardiac function and is especially important when investigating cardiac injury (e.g., myocardial infarction [MI]). Critically, MI deforms the LV, invalidating the assumptions fundamental to calculating of cardiac volumes directly from the LV. Thus, the purpose of this study was to determine if Doppler-derived blood flow through the pulmonary trunk (pulmonary flow [PF]) was an improved method over conventional LV-dependent echocardiography to accurately determine CO after MI...
June 2017: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/28526706/cardiac-hyporesponsiveness-in-severe-sepsis-is-associated-with-nitric-oxide-dependent-activation-of-g-protein-receptor-kinase
#10
Daniela Dal-Secco, Silvia DalBó, Natalia E S Lautherbach, Fábio N Gava, Mara Rubia Nunes Celes, Patricia Oliveira Benedet, Adriana H Souza, Juliana Akinaga, Vanessa Lima, Katiussia P Silva, Luiz Ricardo A Kiguti, Marcos A Rossi, Isis do Carmo Kettelhut, André Sampaio Pupo, Fernando Queiroz Cunha, Jamil Assreuy
G protein-coupled receptor kinase isoform 2 (GRK2) has a critical role in physiological and pharmacological responses to endogenous and exogenous substances. Sepsis causes an important cardiovascular dysfunction in which nitric oxide (NO) has a relevant role. The present study aimed to assess the putative effect of inducible NO synthase (NOS-2)-derived NO on the activity of GRK2 in the context of septic cardiac dysfunction. C57BL/6 mice were submitted to severe septic injury by cecal ligation and puncture (CLP)...
May 19, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28524029/-predictive-value-of-left-ventricular-diastolic-dysfunction-on-mechanical-ventilation-weaning
#11
Hui Wang, Ming Ma, Desheng Chen, Gang Li, Shupeng Wang, Jingen Xia, Jun Duan
OBJECTIVE: To investigate the predictive value of left ventricular diastolic function on mechanical ventilation weaning in patients with left ventricular ejection fraction (LVEF) > 0.50. METHODS: A retrospective case control study was conducted. Sixty-five patients with LVEF > 0.50 undergoing mechanical ventilation for more than 48 hours admitted to surgery intensive care unit (ICU) of China-Japan Friendship Hospital from June 2014 to December 2016 were enrolled...
May 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28523563/assessment-of-endothelial-cell-function-and-physiological-microcirculatory-reserve-by-video-microscopy-using-a-topical-acetylcholine-and-nitroglycerin-challenge
#12
Matthias Peter Hilty, Jacqueline Pichler, Bulent Ergin, Urs Hefti, Tobias Michael Merz, Can Ince, Marco Maggiorini
BACKGROUND: Assessment of the microcirculation is a promising target for the hemodynamic management of critically ill patients. However, just as the sole reliance on macrocirculatory parameters, single static parameters of the microcirculation may not represent a sufficient guide. Our hypothesis was that by serial topical application of acetylcholine (ACH) and nitroglycerin (NG), the sublingual microcirculation can be challenged to determine its endothelial cell-dependent and smooth muscle-dependent physiological reserve capacity...
December 2017: Intensive Care Medicine Experimental
https://www.readbyqxmd.com/read/28512099/mitral-valve-vegetation-diagnosed-with-oesophageal-ultrasound-with-bronchoscope-eus-b
#13
Ajoe John Kattoor, Yogita M Rochlani, Kevin Kuriakose, Nikhil K Meena
Oesophageal ultrasound with bronchoscope (EUS-B) is designed to evaluate mediastinal structures. We describe a case of a 78-year-old woman who presented with altered mental status for 2 weeks. CT head revealed a subacute infarct in the right middle cerebral artery distribution. She was also found to have a lung mass on chest imaging. EUS-B-guided fine needle aspiration demonstrated the presence of adenocarcinoma in station 7 lymph node and in the mass. Immunohistochemistry confirmed it to be a lung primary as the Thyroid Transcription Factor-1 (TTF-1) was strongly positive...
May 15, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28509744/critical-care-echocardiography-guidelines-strength-in-international-cooperation-regarding-terminology-and-competency-standards
#14
Michel Slama, Anthony S McLean, Antoine Vieillard Baron
No abstract text is available yet for this article.
June 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/28505975/reduced-cardiovascular-functions-in%C3%A2-patients-with-alzheimer-s-disease
#15
Wang-Sheng Jin, Xian-Le Bu, Ye-Ran Wang, Ling Li, Wei-Wei Li, Yu-Hui Liu, Chi Zhu, Xiu-Qing Yao, Yang Chen, Chang-Yue Gao, Tao Zhang, Hua-Dong Zhou, Fan Zeng, Yan-Jiang Wang
Previous studies have suggested that cardiovascular functions might play a critical role in Alzheimer's disease (AD) pathogenesis. However, the relationship among heart function, blood flow of cerebral vessels, and AD remains unclear. In the present study, AD patients (n = 34) and age- and gender-matched cognitively normal controls (n = 34) were recruited. Demographic and comorbidity information was collected. The ejection fraction was measured using echocardiography, and the mean velocity, pulsatility index (PI), and resistance index (RI) of the basilar artery (BA), left terminal internal carotid artery (LTICA), and right terminal internal carotid artery (RTICA) were measured using transcranial Doppler...
2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28497395/cardio-protective-effects-of-qishen-granule-on-sarcoplasmic-reticulum-ca-2-handling-in-heart-failure-rats
#16
Ling-Hui Lu, Chun Li, Qi-Yan Wang, Qian Zhang, Yi Zhang, Hui Meng, Yong Wang, Wei Wang
OBJECTIVES: To assess the effects of Qishen Granule (, QSG) on sarcoplasmic reticulum (SR) Ca(2+) handling in heart failure (HF) model of rats and to explore the underlying molecular mechanisms. METHODS: HF rat models were induced by left anterior descending coronary artery ligation surgery and high-fat diet feeding. Rats were randomly divided into sham (n=10), model (n=10), QSG (n=12, 2.2 g/kg daily) and metoprolol groups (n=12, 10.5 mg/kg daily). The therapeutic effects of QSG were evaluated by echocardiography and blood lipid testing...
May 11, 2017: Chinese Journal of Integrative Medicine
https://www.readbyqxmd.com/read/28495379/transthoracic-echocardiography-for-diagnosing-pulmonary-embolism-a-systematic-review-and-meta-analysis
#17
J Matthew Fields, Joshua Davis, Lily Girson, Arthur Au, Jacqueline Potts, Charity J Morgan, Imelda Vetter, Lee Ann Riesenberg
OBJECTIVE: Pulmonary embolism (PE) is a common diagnosis with significant mortality if not appropriately treated. The use of transthoracic echocardiography in patients with PE is common; however, its diagnostic capabilities in this use are unclear. With the increased use of ultrasonography in medical settings, it is important to understand the strengths and limitations of echocardiography for the diagnosis of PE. METHODS: We conducted a systematic review of PubMed, CINAHL, and EMBASE through 2016 for articles assessing the diagnostic accuracy of transthoracic echocardiography for PE...
May 9, 2017: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/28485321/monitoring-changes-in-hepatic-venous-velocities-flow-after-a-fluid-challenge-can-identify-shock-patients-who-lack-fluid-responsiveness
#18
Wei Du, Xiao-Ting Wang, Yun Long, Da-Wei Liu
BACKGROUND: Evaluating the hemodynamic status and predicting fluid responsiveness are important in critical ultrasound assessment of shock patients. Transthoracic echocardiography with noninvasive diagnostic parameters allows the assessment of volume responsiveness. This study aimed to assess the hemodynamic changes in the liver and systemic hemodynamic changes during fluid challenge and during passive leg raising (PLR) by measuring hepatic venous flow (HVF) velocity. METHODS: This is an open-label study in a tertiary teaching hospital...
May 20, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28485316/left-ventricular-longitudinal-systolic-function-in-septic-shock-patients-with-normal-ejection-fraction-a-case-control-study
#19
Hong-Min Zhang, Xiao-Ting Wang, Li-Na Zhang, Wei He, Qing Zhang, Da-Wei Liu
BACKGROUND: Septic cardiomyopathy is a common finding in septic shock patients. The accepted definition of septic cardiomyopathy is often based on the left ventricular ejection fraction (LVEF). The aim of this study was to determine whether the left ventricular longitudinal systolic function was more sensitive than the LVEF in heart function appraisal of septic shock patients. METHODS: This was a case-control study conducted at a 40-bed Intensive Care Unit (ICU) of Peking Union Medical College Hospital...
May 20, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28482805/management-of-potentially-life-threatening-emergencies-at-74-primary-level-hospitals-in-mongolia-results-of-a-prospective-observational-multicenter-study
#20
Naranpurev Mendsaikhan, Davaa Gombo, Ganbold Lundeg, Christian Schmittinger, Martin W Dünser
BACKGROUND: While the capacities to care for and epidemiology of emergency and critically ill patients have been reported for secondary and tertiary level hospitals in Mongolia, no data exist for Mongolian primary level hospitals. METHODS: In this prospective, observational multicenter study, 74 primary level hospitals of Mongolia were included. We determined the capacities of these hospitals to manage medical emergencies. Furthermore, characteristics of patients presenting with potentially life-threatening emergencies to these hospitals were evaluated during a 6 month period...
May 8, 2017: BMC Emergency Medicine
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