Search Results
Results 301 - 350 of 977
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Moxon D - - 2003
The HemoSonic monitor (HemoSonic 100, Arrow International, Reading, PA, U.S.A.) is a minimally invasive device to determine cardiac output by means of M-mode and pulsed Doppler ultrasound. We evaluated the HemoSonic monitor by comparing its output to paired measurements obtained by the standard thermodilution technique in patients who had recently ...
Beardsall K - - 2003
Aim: To estimate the frequency of pericardial effusion/cardiac tamponade associated with the use of neonatal percutaneous long lines (PLLs) over the past five years. METHOD: A retrospective nationwide postal survey, of all neonatal and special care units in the United Kingdom. RESULTS: Eighty two cases of pericardial effusion/cardiac tamponade were ...
Pons Sandrine - - 2003
We investigated in mice whether atherosclerosis exacerbates the development of post-ischemic heart failure and alters the beneficial effects of long-term angiotensin II type 1 receptor blockade in this model. ApoE-deficient (ApoE(-/-)) and C57BL/6J (C57) mice with myocardial infarction (coronary ligation) received vehicle (C57 and ApoE(-/-)) or irbesartan (Ir, 50mg/kg/d orally, ...
Adachi Hitoshi - - 2003
An 83-year-old woman presented with dilated cardiomyopathy. Cardiac resynchronization therapy was performed. Two weeks later, cardiac output and ventricular wall motion were estimated using impedance cardiography and tissue Doppler echocardiography with and without pacing. Cardiac output increased from 3.5 to 4.5 l/min during biventricular pacing with a 120 msec atrioventricular ...
Olkowski A A - - 2003
The present study focuses on lesions of the pericardium commonly observed in fast growing broilers. These lesions are examined in the context of electrophysiological and functional changes associated with cardiac performance and patho-physiology in broilers succumbing to acute or chronic heart failure. Typical lesions involving the pericardium in fast growing ...
Rose David D - - 2003
Transesophageal echocardiography was first described and used to monitor cardiac function in 1976. Initially adopted by cardiac anesthesiologists and cardiologists, it has gained acceptance as an important diagnostic tool in the monitoring and assessment of cardiac status in the critically ill and trauma patient population. Comparative data suggest that transesophageal ...
Andersen Ulrik B - - 2003
BACKGROUND/AIMS: Measurement of cardiac output in hyperkinetic patients with cirrhosis by Doppler echocardiography is increasingly reported, but has not been validated. We have compared simultaneous measurements of cardiac output by Doppler echocardiography (CO(d)) and by the indicator dilution technique (CO(I)). METHODS: Twelve patients with cirrhosis were studied. CO(d) was measured ...
Ceron Loris - - 2003
Pericardiocentesis was introduced during the 19th century, and reached its current level of development with the introduction of two-dimensional echocardiography. Although there is general agreement that complications are rare with skilled operators, a diagnostic and therapeutic problem often occurs when there is a posterior pericardial effusion, as it is not ...
Karlsson M G D - - 2003
Laser Doppler perfusion monitoring (LDPM) can be used for monitoring myocardial perfusion in the non-beating heart. However, the movement of the beating heart generates large artifacts. Therefore the aim of the study was to develop an LDPM system capable of correlating the laser Doppler signals to the cardiac cycle and ...
Mielck Frank - - 2003
OBJECTIVE: To investigate in a direct comparison accuracy and precision of continuous cardiac output measurements assessed by continuous pulmonary artery thermodilution technique (TDCCO), continuous pulse contour analysis (PCCO), and noninvasive partial CO(2)-rebreathing technique (NICO) in patients after coronary artery bypass grafting (CABG) during the postoperative period. DESIGN: Prospective, controlled clinical ...
Wright Jeremy J - - 2003
BACKGROUND: Dizziness and loss of consciousness are common clinical problems presenting in general practice. OBJECTIVE: This article aims to provide the practitioner with a pragmatic and logical approach to identifying the cardiovascular causes of dizziness and loss of consciousness. DISCUSSION: A range of disorders with varying pathology cause a transient ...
Jaeggi Philip - - 2003
OBJECTIVES: Assessment of hemodynamics by transesophageal Doppler devices (TDD) may be a less invasive alternative to the pulmonary artery catheter. In contrast to the TDD evaluated so far, a new monitor (HemoSonic100) measures both blood flow velocity and the diameter of the descending aorta. The aim of this study was ...
Zhao Xiaoqin - - 2003
OBJECTIVE: To evaluate the accuracy of measuring cardiac output (CO) in the early post-cardiopulmonary bypass (CPB) period by comparing thermodilution with Doppler methods. DESIGN: Prospective and blinded human trial. SETTING: Academic medical center. PARTICIPANTS: Thirty adult patients undergoing elective coronary artery bypass graft surgery. MEASUREMENTS AND MAIN RESULTS: Thermodilution CO ...
Katara Avinash N - - 2003
We report the case of a 60-year-old man presenting with a symptomatic, posteriorly loculated, pericardial effusion, and a concomitant pleural effusion a month after coronary artery bypass grafting. Following the initial insertion of an intercostal drain, he was treated by thoracoscopic creation of a pericardial window. His postoperative recovery was ...
Akdemir Ramazan - - 2003
A 52-year-old man presented with severe dyspnea 6 months after a thoracic firearm injury. Many pellets distributed in the thoracic wall and an enlarged cardiac silhouette were detected on chest X-ray. There was low voltage in all 12 leads and electrical alternans on electrocardiography. Echocardiography showed a massive pericardial effusion ...
Forauer Andrew R - - 2003
Cardiac tamponade is defined as an accumulation of fluid within the pericardial sac that is large enough to impair the diastolic filling of the ventricles. There are numerous causes, including cardiac disease, malignancy, and trauma (penetrating, blunt, and iatrogenic). With increasing complexity of percutaneous endovascular interventions, interventional radiologists must learn ...
Lundell Dwight C - - 2003
BACKGROUND: Certain heart manipulations carried out to access anastomotic sites during beating heart coronary artery bypass (OPCAB) compromise hemodynamics, and these risks can affect end-organ perfusion and limit patient selection. Evidence suggests that right heart support (RHS) augments left ventricular preload and provides hemodynamic stability. This study evaluated hemodynamic measures ...
Tibby S M - - 2003
Systolic cardiac function results from the interaction of four interdependent factors: heart rate, preload, contractility, and afterload. Heart rate can be quantified easily at the bedside, while preload estimation has traditionally relied on invasive pressure measurements, both central venous and pulmonary artery wedge. These have significant clinical limitations; however, adult ...
Babic Z - - 2003
The authors have conducted a prospective investigation on 15 patients with hemodynamically unstable pericardial effusion (main criteria: echocardiographic signs of various degrees of right ventricular diastolic collapse and clinical instability) hospitalized in the Intensive Cardiac Unit (1.97% of all patients) for one year and have compared the results with literature ...
Hove Jens D - - 2003
BACKGROUND: The purpose of this study was to evaluate the possibility of measuring cardiac output during positron emission tomography (PET) examination of myocardial perfusion with nitrogen 13 ammonia. METHODS AND RESULTS: In 7 patients undergoing right-sided cardiac catheterization for evaluation of heart failure and 6 patients who had undergone heart ...
Oliva Ana Paula Vilcinsky - - 2003
This study was done to analyze the association between defining characteristics of decreased cardiac output (DCO) identified by noninvasive methods and the cardiac index (CI) estimated by thermodilution. Two defining characteristics were associated with DCO: decreased peripheral pulse and decreased peripheral perfusion. This study points out the relevance of peripheral ...
Handke Michael - - 2003
Determination of cardiac output is a potentially important clinical application of three-dimensional (3-D) echocardiography since it could replace invasive measurements with the Swan-Ganz-catheter. To date, there are no studies available to determine whether cardiac output measured by thermodilution can be predicted reliably under changing hemodynamic conditions. Fifteen pigs with ischemic ...
Husedzinović Ino - - 2002
AIM: To compare transesophageal echo-Doppler with thermodilution method for measuring cardiac output during dobutamine infusion after off-pump coronary artery bypass. METHOD: Using transesophageal echo-Doppler and thermodilution methods, we measured cardiac output in 30 patients after off-pump coronary artery bypass, immediately before and 5, 15, and 30 min after the introduction ...
Byrne John G - - 2002
Constrictive cardiac physiology typically does not occur in the absence of parietal pericardium. However, we report eight patients who, after left extrapleural pneumonectomy and removal of the parietal pericardium for malignancy, presented with dyspnea, jugular venous distension, and peripheral or generalized edema unresponsive to diuretics. Cardiac decortication (epicardiectomy) was performed ...
Mets B - - 2002
OBJECTIVE: To assess the accuracy of a continuous cardiac output (CCO) monitor against an independent, intravascular measurement of flow as can be performed in patients fitted with a left ventricular assist device (LVAD). DESIGN: A prospective cohort study. SETTING: Academic tertiary-care center. PARTICIPANTS: Adult patients (n = 15) presenting for ...
Goyle Krishan K - - 2002
Pericarditis, or inflammation of the pericardium, is most often caused by viral infection. It can also develop as a result of bacterial or other infection, autoimmune disease, renal failure, injury to the mediastinal area, and the effects of certain drugs (notably hydralazine and procainamide). The clinical features of pericarditis depend ...
Masetti Paolo - - 2002
BACKGROUND: Hypotension refractory to maximal doses of alpha-adrenergic drugs after cardiac operations employing cardiopulmonary bypass (CPB) has been referred as "vasoplegic syndrome." Vasopressin has been used for its therapy with encouraging results. MATERIAL AND METHODS: 16 patients (mean age 71, range 47 to 84 years) were treated with intravenous vasopressin ...
Cohen Marc - - 2002
Intra-aortic balloon (IAB) counterpulsation can augment the cardiac output. However, the effect of different IAB volumes on cardiac performance has not been adequately evaluated in humans. Eighty-two patients (52 males [63%]; mean age, 65 +/- 12 years; mean body surface area [BSA], 1.8 +/- 0.2 m(2)) had IAB counterpulsation for ...
Yang Tianen - - 2002
Iron-overload cardiomyopathy is the most common cause of death in patients with thalassemia major, yet the associated changes in cardiac function have not been quantified. We studied the effects of iron overload on cardiac function in Mongolian gerbils, a species that responds to iron overload in the same manner as ...
Hamilton Timothy T - - 2002
BACKGROUND: Cardiac output is often monitored after cardiac operations with a pulmonary artery catheter. A new method has been introduced that measures cardiac output by lithium dilution (LiDCO) and uses these data to calibrate a system (PulseCO) that calculates cardiac output continuously from the energy of the arterial pressure waveform. ...
Su Nuan-Yen - - 2002
BACKGROUND: Bolus thermodilution cardiac output (BCO) measurement has been considered as the "gold standard" for cardiac output (CO) measurement. However, it requires placement of a pulmonary artery (PA) catheter, and questions have been raised regarding the risk/benefit ratio of this invasive technique. Furthermore, great variations between measurements have been reported. ...
Corley K T T - - 2002
Knowledge of cardiac output is expected to help guide the treatment of hypotension associated with critical illness and/or anaesthesia in neonatal foals. However, a practical and safe method of measuring cardiac output has not been described for the foal. Lithum dilution, a new method of cardiac output determination not requiring ...
Ozeki Shin-ichiro - - 2002
In August 1998, the patient, a 75-year-old woman, was diagnosed with pericardial effusion (PE) during an investigation of cardiomegaly. The PE disappeared after the administration of diuretics, but in February 1999, shortness of breath and general fatigue developed, and PE was again present. Diagnostic pericardiocentesis revealed bloody fluid. Chest computed ...
Araki Tsutomu - - 2002
A 64-year-old woman was admitted with systemic edema and exertional dyspnea. High-output heart failure was diagnosed by right heart catheterization and she was treated with diuretics. After 3 weeks, her symptoms disappeared but a high cardiac output state persisted. A diagnosis of Crow-Fukase syndrome was made based on the presence ...
Zhang H B - - 2002
To examine the haemodynamic effects of somatostatin (SS) and octreotide (OC) versus pitressin plus nitroglycerine (PN) in the control of variceal bleeding, 224 patients with acute oesophageal and gastric variceal haemorrhage were randomly divided into three groups and treated with SS, OC and PN; they also had their Doppler ultrasound ...
Schäfer G E - - 2002
Among the uremia-associated risk factor, which can be influenced today, anemia is considered most relevant because it induces functional and organic alterations of cardiac/circulatory function. Research concerning influence of the anemia on the pulmonary hemodynamic and cardiac output (CO) in pre-uremic patients are not available up to now. Cardiac and ...
Balik Martin - - 2002
OBJECTIVE: To determine the relationship between the degree of tricuspid regurgitation (TR) and accuracy of cardiac output measurement by thermodilution in mechanically ventilated patients. DESIGN AND SETTING. Prospective observational study in a 20-bed general intensive care unit in the university hospital. PATIENTS: We examined 27 patients (not undergoing cardiac surgery): ...
Brown Julian M - - 2002
OBJECTIVE: To assess the accuracy of echocardiography for hemodynamic monitoring. DATA SOURCES: A computerized MEDLINE search was used with the following search headings: monitoring (physiologic and intra-operative) and both echocardiography and transesophageal echocardiography. A number of studies were obtained from the reference lists of cardiology reviews and textbooks. STUDY SELECTION: ...
Rauch H - - 2002
BACKGROUND: Previous studies have demonstrated that there is a lack of agreement between intermittent cold bolus thermodilution (ICO) and a semicontinuous method with dilution of heat (CCO) in cardiac surgical patients following hypothermic extracorporeal circulation (HCPB). Therefore, the aim of the present study was to compare both ICO and CCO ...
Aye Tim - - 2002
PURPOSE: To describe the use and concerns of ketamine anesthesia for pericardial window in a patient with pericardial tamponade and severe chronic obstructive pulmonary disease (COPD) with CO(2) retention. CLINICAL FEATURES: A 73-yr-old woman with long-standing COPD and cor pulmonale admitted with pericardial effusion and tamponade had surgery for a ...
Barbato John C - - 2002
We recently evaluated treadmill aerobic running capacity in 11 inbred strains of rats and found that isolated working left ventricular function correlated (r = 0.86) with aerobic running capacity. Among these 11 strains the Buffalo (BUF) hearts produced the lowest and the DA hearts the highest isolated cardiac output. The ...
Ceriana Piero - - 2002
OBJECTIVE: To evaluate the reliability of a new noninvasive method for the assessment of cardiac output with the partial carbon dioxide rebreathing technique. METHODS: This technique was applied to patients undergoing heart surgery. Values of cardiac index obtained with this equipment were compared with the artero-venous CO2 gradient, a reliable ...
Wallen M - - 2002
Cardiac tamponade may occur following cardiac surgery as a result of blood or fluid collecting in the pericardial space compressing the heart and reducing cardiac output. Mediastinal chest drains (including pericardial drains) are inserted as standard post-operative practice following cardiac surgery to assist the clearance of blood from the pericardial ...
Sanotskaya N V - - 2001
Acute experiments on cats showed that mild hypoxia did not disturb the balance between right and left ventricular outputs. Breaching 3% O(2) shifted this balance by reducing right ventricular output in cats with low resistance to hypoxia. Spontaneous breathing hypercapnic gas mixtures shifted this balance towards the left ventricular output. ...
Schrier R W - - 2001
Body fluid volume regulation is critically important in maintaining life. In this paper, we review our unifying hypothesis of body fluid volume regulation, which maintains arterial circulatory integrity in health and disease. The integrity of the arterial circulation, as determined by cardiac output and peripheral vascular resistance, is the predominant ...
Dubowitz M - - 2001
Cardiac complications of inflammatory bowel disease are rare; the most commonly reported complication is pericarditis. Drugs containing 5-aminosalicylic acid have been implicated as the cause of pericarditis in inflammatory bowel disease. A male patient with ulcerative colitis who was not taking any 5-aminosalicylic acid-containing drugs, but who developed a severe ...
Suzuki T T Institute of Rheumatology, Tokyo Women's Medical University , 10-22 Kawada-cho, Shinjuku-ku, Tokyo 162-0054 , - - 2001
Abstract To evaluate the usefulness of a dipyridamole stress thallium-201 (Tl-201) perfusion scan in detecting myocardial involvement in systemic sclerosis we performed Tl-201 scans, electrocardiograms (ECG), and echocardiograms (UCG) on 24 patients with systemic sclerosis (11 diffuse type, 13 limited type) sequentially selected randomly over an 8-month period, and compared ...
Booth S A - - 2001
Cardiac tamponade is a poorly recognized complication of central venous catheterization associated with a high mortality. We present a case of fatal cardiac tamponade after intra- pericardial infusion of total parenteral nutrition in a patient who had two central venous catheters. We suggest that catheter tip position should always be ...
Jansen J R - - 2001
In three clinical centres, we compared a new method for measuring cardiac output with conventional thermodilution. The new method computes beat-to-beat cardiac output from radial artery pressure by simulating a three-element model of aortic input impedance, and includes non-linear aortic mechanical properties and a self-adapting systemic vascular resistance. We compared ...
Dunsire M F - - 2001
Traumatic haemopericardium is an uncommon but life threatening condition. It is usually caused by penetrating cardiac injuries or cardiac rupture from blunt chest trauma. We report haemopericardium and cardiac tamponade in a young girl after blunt abdominal trauma. She presented with mild upper abdominal pain, tachycardia and hypotension having been ...
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