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Results 201 - 250 of 837
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Singh Surinder - - 2004
During cardiopulmonary resuscitation, oxygen extension tubing was mistakenly connected into the tracheal tube connector. As a result, the patient recovering from hypovolemic cardiac arrest died because of pulmonary barotrauma. Similar cases have been reported. We suggest that a worldwide equipment performance standard be developed to prevent future occurrences and describe ...
Sun Wei-Zen - - 2004
For decades, water-mill murmur, decrease in end-tidal CO(2) (Petco(2)), hypotension, and hypoxemia have been accepted as diagnostic criteria for gas embolism. In this case report, a 19-yr-old male patient developed a sudden reduction in Petco(2) and profound circulatory collapse 15 min after intramedullary irrigation with H(2)O(2). However, arterial oxygen desaturation ...
Murphy Glenn S - - 2004
BACKGROUND: Rapid flushing of radial artery catheters may result in retrograde embolization of air into the cerebral circulation. This study examined the incidence of central air embolization during and after flushing of an arterial pressure monitoring system. METHODS: One hundred adult patients undergoing cardiac surgical procedures were enrolled in this ...
Cheshire William P - - 2004
Headache occasionally occurs during or after scuba diving. Although its significance often is benign, headache may signal a serious neurological disorder in some circumstances. In addition to the usual causes of headache, the diagnostic evaluation should consider otic and paranasal sinus barotrauma, arterial gas embolism, decompression sickness, carbon dioxide retention, ...
Harris R Scott - - 2004
OBJECTIVE: To test the hypothesis that the ratio of diffusing capacity of the lung for nitric oxide (DLno) to diffusing capacity of the lung for carbon monoxide (DLco) would be affected by occlusion of a fraction of the pulmonary vascular bed. DESIGN: Interventional physiologic study. SETTING: Animal laboratory of a ...
Siraneci Rengin - - 2004
Chickenpox is a common infectious disease of the pediatric age group with rare complications such as hemorrhagic varicella and arterial thrombotic purpura. Medical support is the mainstay of treatment in such cases but for the rescue of necrotic tissues, hyperbaric oxygen (HBO) therapy should be applied in addition to anticoagulant ...
Stewart Randolph H - - 2004
OBJECTIVE: An increase in pulmonary lymph flow and lymph protein clearance following pulmonary air embolization has been interpreted as evidence of increased pulmonary microvascular permeability. The authors hypothesized that air embolization does not alter the pulmonary microvascular permeability to protein and that this could be demonstrated by determining the effect ...
Sarantopoulos S - - 2004
An otherwise well ten-week-old girl underwent an air contrast hip arthrogram and application of a hip spica for a developmentally dislocated hip. The child displayed signs consistent with venous air embolism after injection of 5 ml of air into the hip joint. These signs included a decrease in arterial haemoglobin ...
Chakravarti Rajesh - - 2004
A 63-year-old man with left upper zone haziness on chest X-ray and an infiltrative lesion with a pleural mass in the left upper lobe on CT scan was scheduled for CT-guided percutaneous trans-thoracic needle biopsy. During the procedure, the patient had massive haemoptysis and cardiorespiratory arrest and could not be ...
Turgeman Yoav - - 2004
We present a case of a massive pulmonary air embolism during permanent pacemaker lead implantation under mild sedation in a 73-year-old woman. We used a peel-away sheath that is devoid of a hemostatic valve. The air embolism occurred after deep inspiration associated with loud snoring sounds and resolved after short ...
Lu Y-Y - - 2004
We report a case of thoracic sclerosing haemangioma with concomitant pulmonary and mediastinal involvement in a 19-year-old girl who presented with haemoptysis and dyspnoea. CT showed a large oval mass in the left lower lobe and another larger dumbbell-shaped mass in the posterior mediastinum. Both masses were well-defined and harboured ...
Nayagam J - - 2004
Air embolism is a rare complication of gastrointestinal endoscopy. We present a 56-year-old male who developed both venous and systemic arterial air embolism during an endoscopic retrograde cholangiopancreatogram. Despite early treatment based on clinical diagnosis and confirmation by transthoracic echocardiography, the patient died as a result of severe cerebral ischaemia. ...
Culafić Dj - - 2004
The objective of the study is to determine the diagnostic role of pulmonary functional tests and perfusion pulmonary scintigraphy for quantifying the oxygenation and vascular abnormality in patients with liver cirrhosis. The prospective study included 70 patients with liver cirrhosis. Arterial blood gases analysis were performed in both supine and ...
Heppner Bradley T - - 2004
Plasma oxygen permeability measures how easily oxygen dissolves in and diffuses through blood plasma. There has long been evidence that artery wall hypoxia plays a role in atherogenesis. This paper reviews the influence that plasma oxygen permeability has on artery wall oxygenation and presents experimental evidence for a relationship between ...
Bartels Matthew N - - 2004
STUDY OBJECTIVES: Recently, we demonstrated significantly improved baroreflex sensitivity (BRS) and autonomic balance after 31% supplemental oxygen (SuppO2) in resting patients with chronic obstructive pulmonary disease (COPD). In order to investigate whether peripheral arterial stiffness changes may play a role, we evaluated changes in peripheral arterial stiffness and BRS after ...
Scott L Keith - - 2003
BACKGROUND: Arteriovenous carbon dioxide (AVCO2R) removal is a technique of pumpless extracorporeal carbon dioxide removal. This system has been used successively to control pH and PaCO2 in patients with acute lung injury who could not be adequately ventilated. This report describes the use of this technology in an organ donor ...
Brogan Thomas V - - 2004
We have shown previously that inspired CO2 (3-5%) improves ventilation-perfusion (Va/Q) matching but with the consequence of mild arterial hypercapnia and respiratory acidosis. We hypothesized that adding CO2 only late in inspiration to limit its effects to the conducting airways would enhance Va/Q matching and improve oxygenation without arterial hypercapnia. ...
Di Bartolomeo Stefano - - 2003
OBJECTIVES: To assess the appropriateness of arterial carbon dioxide tension control in a group of 92 patients with traumatic brain injury who, despite receiving advanced prehospital care, showed no improved outcome in comparison with a group homogeneous but for a lower level of prehospital care. METHODS: A retrospective registration of ...
Johnson Charles E - - 2003
Gas embolism occurring in adult patients supported with cardiopulmonary bypass is usually associated with mechanical complications. Management of gas embolism is less often described for the pediatric or neonatal patient. Measures to counteract gas embolism must be undertaken immediately if a satisfactory outcome is to be achieved. Here, the management ...
Lu Chih-Cherng - - 2003
We investigated the effect of the inspired isoflurane concentration (C(I)iso) on body uptake by comparing the isoflurane concentration in the pulmonary artery blood (PAiso) and that in the arterial blood (Aiso) in 16 patients undergoing coronary artery bypass grafting surgery during the 1st, hour of isoflurane anesthesia. The patients received ...
Roberts Shawn - - 2003
Complications of central venous catheters occur in less than 1% of all insertions. Of these, pulmonary air embolism is a rare though often fatal complication. Possible mechanisms include opening of the line to the atmosphere during use and poor technique during insertion or removal. There has also been speculation that ...
van Hulst Robert A - - 2003
Based on a literature search, an overview is presented of the pathophysiology of venous and arterial gas embolism in the experimental and clinical environment, as well as the relevance and aims of diagnostics and treatment of gas embolism. The review starts with a few historical observations and then addresses venous ...
Hickey Matthew J - - 2003
A commercial airline mechanic was evaluated for right-sided hemianesthesia. Thorough diagnostic testing failed to identify a definitive etiology, and the mechanic was assessed as having symptoms of a left internal capsule lesion, likely from an ischemic event. On day 12 after symptom onset, he consulted a diving medicine specialist for ...
Pittermann Jarmila - - 2003
We tested the hypotheses that freezing-induced embolism is related to conduit diameter, and that conifers and angiosperms with conduits of equivalent diameter will exhibit similar losses of hydraulic conductivity in response to freezing. We surveyed the freeze-thaw response of conifers with a broad range of tracheid diameters by subjecting wood ...
Perthel Mathias - - 2003
Microemboli during extracorporeal circulation (ECC) might be a reason for postoperative neuropsychological dysfunction. This case report shows that reduction of microbubbles in the arterial line, as well as high intensity transient signals (HITS) in the middle cerebral artery (MCA), could be accomplished by use of a dynamic bubble trap (DBT) ...
Easby Jason - - 2003
OBJECTIVE: Pulmonary aspiration is a significant cause of admission to the ITU and is associated with significant morbidity and mortality. Aspiration in the supine position produces posterior collapse/consolidation, similar to that seen in ALI/ARDS patients. Prone positioning has been shown to improve oxygenation in ALI/ARDS, but no studies have been ...
Jeon Doo-Soo - - 2003
BACKGROUND: Severe emphysema frequently is associated with elevated pulmonary artery systolic pressure. However, it is often difficult to obtain adequate tricuspid regurgitation (TR) signals for measurement of pulmonary artery systolic pressure in patients with severe emphysema. PURPOSE: This study was conducted to evaluate the usefulness of air-blood-saline mixture in measuring ...
Leotta G A - - 2003
A southern giant petrel (Macronectes giganteus) was found dead at Potter Peninsula, King George Island, South Shetland, Antarctica. The adult male was discovered approximately 48 hr after death. Macroscopic and microscopic lesions were compatible with avian cholera and the bacterium Pasteurella multocida subsp. gallicida, serotype A1 was isolated from lung, ...
Lapostolle F - - 2003
Prolonged air travel is associated with an increased incidence of thromboembolic events. The occurrence of stroke was studied in patients with pulmonary embolism after air travel in a review of all flights arriving at Charles de Gaulle Airport in Paris during an 8-year period. Thromboembolic stroke and patent foramen ovale ...
Kiziltan H T - - 2003
Deep hypothermic circulatory arrest may impair cerebral cellular functions, and physiological parameters following circulatory arrest may deviate from the normal. The intention of this study was to monitor jugular venous oxygen saturation during cardiopulmonary bypass before and after deep hypothermic circulatory arrest. Jugular venous oxygen saturation were obtained on 18 ...
Ratzenhofer-Komenda B - - 2003
BACKGROUND: We studied whether hemodynamic and oxygenation profiles are altered in critically ill patients after exposure to hyperbaric oxygen (HBO). METHODS: Ten intensive-care patients (two females, eight males) undergoing HBO treatment after major abdominal surgery, after burn injury and after CO poisoning were included. All subjects were put on mechanical ...
Idrees Majdy M - - 2003
Pneumothorax is defined as the presence of air within the pleural space and implicates that either the visceral or parietal pleura have been disrupted. In this article the classification of pneumothorax, incidence, pathogenesis, and the radiological evaluation and different quantitative measures of pneumothorax were reviewed. In this communication, we also ...
Oh Seung-Tak - - 2003
Pneumoperitoneum usually indicates rupture of a hollow viscus and considered a surgical emergency. But air may also enter the peritoneum from the lung or the genital organs in female without visceral perforation. While scuba diving, the rapid ascent is usually controlled by placing in a decompression chamber and the excess ...
Draganov J - - 2003
We present a case of paradoxical air embolism in a patient undergoing neurosurgery of the posterior fossa in the sitting position. Paradoxical air embolism was detected in the descending aorta by a transoesophageal Doppler probe, which was inserted primarily for non-invasive haemodynamic monitoring. The patient suffered no serious complications of ...
Khoo S M - - 2003
Rapid consumption of oxygen by leucocytes can result in erroneous diagnosis of severe hypoxaemia in patients with extreme leucocytosis. We report a case of chronic myeloid leukaemia, extreme leucocytosis and arterial hypoxaemia which was out of proportion to the clinical and radiological evidence of lung disease. The pseudohypoxaemia was confirmed ...
Abraham Pierre - - 2003
BACKGROUND: We sought to identify whether transcutaneous oxygen tension (tcPo2) measurements could be used to noninvasively detect lesions in the arterial network supplying blood flow to the hypogastric circulation. METHODS AND RESULTS: A study was undertaken in vascular patients with suspected (PC, n=43) and not with suspected (NPC, n=34) proximal ...
Gomes Walter J - - 2003
Normothermic cardiopulmonary bypass has recently been proposed as a superior technique for maintaining body metabolism. However, its use remains controversial since the degree of cerebral protection provided might be inferior to that conferred by conventional hypothermic techniques. We report a case of accidental massive air embolism during coronary artery bypass ...
Rohdin M - - 2003
Patients with acute respiratory distress syndrome have increased lung tissue weight and therefore an increased hydrostatic pressure gradient down the lung. Also, they have a better arterial oxygenation in prone (face down) than in supine (face up) posture. We hypothesized that this effect of the direction of gravity also existed ...
Chan K L - - 2003
We compared the performance of mainstream capnometry as a measure of arterial carbon dioxide tension (Paco2) with sidestream recordings in adult neurosurgical patients undergoing supine craniotomy. Two hundred and forty patients were randomly assigned so that the end-tidal carbon dioxide tension (PEco2) was measured using either a mainstream or sidestream ...
Kerner Thoralf - - 2003
Entry of air into the venous system leading to intracardiac air and pulmonary air embolism (PAE) has been reported in various clinical settings such as neurosurgical interventions in the sitting position and in autopsies on patients with head and neck injuries. We report the case of a 29-year-old male who ...
Blogg S L - - 2003
Raised internal pressure in a distressed submarine rapidly increases the risk of decompression sickness (DCS) following submarine escape. The hypothesis that breathing a hyperoxic gas during escape may reduce the risk of DCS was tested using goats. Shallow air saturation and simulated submarine escape dives were carried out either singularly ...
Schenk P - - 2002
The hepatopulmonary syndrome (HPS) is defined as the triad of liver disease, arterial deoxygenation, and pulmonary vascular dilatation. The reported prevalence of HPS in cirrhotic patients varies between 4% and 19%, and various threshold values defining arterial deoxygenation have been used and recommended previously. However, it is not known how ...
Flynn Erin P - - 2002
We explore three questions concerning arterial hyperoxygenation and focal ischemia. (1) Does greater benefit accrue with higher levels of arterial hyperoxemia? (2) Is the net effect of continuous (intraischemic plus postischemic) oxygen therapy toxic, or beneficial to middle cerebral artery infarction? (3) In view of free radical theories of reperfusion ...
Balldin Ulf I - - 2002
INTRODUCTION: Pulmonary altitude decompression sickness (DCS) is a rare condition. 'Chokes' which are characterized by the triad of substernal pain, cough, and dyspnea, are considered to be associated with severe accumulation of gas bubbles in the pulmonary capillaries and may rapidly develop into a life-threatening medical emergency. This study was ...
Manasse E - - 2002
Besides the surgeon's experience, there is no objective method to detect whether the retrograde cannula is inserted correctly before injecting the cardioplegia and measuring the coronary sinus pressure after the aorta cross-clamp. Repositioning of the retrograde cannula once extracorporeally is not always an easy maneuver and may include the risk ...
Chandraratna Anthony - - 2002
We report the diagnosis of intracoronary air embolism by transesophageal echocardiography in 2 patients undergoing open heart surgery. The sudden appearance of inferior wall akinesis with increased brightness of the area immediately after removal of the aortic cross clamp and spontaneous resolution of the abnormalities support the diagnosis of intracoronary ...
Rodriguez Rosendo A - - 2002
PURPOSE: The authors investigated whether ultrasonic characteristics of embolic signals could be used to differentiate embolic composition. MATERIALS AND METHODS: The authors analyzed high-intensity transient signals (HITS) from 3 patients with patent foramen ovale during the bubble contrast test and during total joint replacement surgery. In 3 anesthetized dogs, latex ...
Sistino Joseph J - - 2002
Extracorporeal membrane oxygenation has been used successfully to support both cardiac and pulmonary function following Stage I Norwood operation. Determination of the return of native cardiac function and pulmonary function can be easily accomplished because of the single ventricle physiology. The pulmonary function can be assessed while on full flow ...
Arakawa Hiroaki - - 2002
OBJECTIVE: We evaluated the relationship of air trapping to mosaic perfusion in patients with pulmonary embolism. SUBJECTS AND METHODS: Forty-one consecutive patients with suspected pulmonary embolism underwent expiratory CT followed by helical CT angiography. After excluding 12 patients who had airway disease or were smokers, we divided the patients into ...
Huang Kun-Lun - - 2002
BACKGROUND: Pulmonary air embolism (PAE) occurs in inappropriate decompressions or clinical complications. Sudden lodging of air bubbles in the pulmonary circulation results in pulmonary hypertension, pulmonary edema, and deficiency in cardiopulmonary functions, which are often fatal without timely intervention. In this study, we investigated the effectiveness of hyperbaric oxygen (HBO2) ...
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