Search Results
Results 401 - 450 of 846
< 4 5 6 7 8 9 10 11 12 13 14 >
Jones N C - - 1996
Of the many possible causes of air embolism occurring in patients undergoing cardiopulmonary bypass (CPB), human error due to the perfusionist or the surgeon accounts for the vast majority. This case, however, presents a previously unreported, but recognized, cause of air embolism, due to a technical problem encountered during the ...
Antonini-Canterin F - - 1996
Hydropneumopericardium is an uncommon condition that requires prompt diagnosis and treatment if hemodynamic compromise is present. Chest roentgenography, computerized tomography, and echocardiography provide important information for the diagnosis. In this article a new distinctive echocardiographic sign of hydropneumopericardium is described: the direct demonstration of the air-fluid interface in the long-axis ...
Hsieh M J - - 1996
A 40 year old diabetic man with pulmonary actinomycosis was admitted to hospital with recurrent haemoptysis. The chest radiograph showed an air meniscus in the left upper lobe, a rare presentation of pulmonary actinomycosis. Bronchoscopic examination revealed a mass in a cavity which has never been reported previously. He underwent ...
Kapsner C E - - 1996
The esophageal detector device (EDD) recently has been found to assess endotracheal (ET) tube placement accurately. This study describes the reliability of the EDD in determining the position of the ET tube in clinical airway situations that are difficult. This was a prospective, randomized, single-blinded, controlled laboratory investigation. Two airway ...
Takeoka M - - 1996
We investigated the influence of low oxygen ventilation, air-bubble infusion into the pulmonary artery and their synergistic effect on pulmonary hemodynamics and microvascular permeability in isolated perfused rat lungs. Pulmonary arterial pressure was significantly increased by 70 min of ventilation with 3% O2 (hypoxia, group H); by 0.2-ml air-bubble infusion ...
Benton P J - - 1996
We present the case of a helicopter pilot who suffered an arterial gas embolism following instruction in the use of the Short Term Air Supply System (STASS) at a depth of 1 m of water. This is believed to be the shallowest depth from which a case of arterial gas ...
Jacobi C A - - 1996
Submucosal tissue oxygen tension (PtO2) was measured in 20 patients with cervical esophagogastrostomy after resection of esophageal carcinoma, using a Clark-type oxygen electrode. The mean gastric baseline PtO2 was 54.6 +/- 10.7 mm Hg. Following ligature of the vasa brevia and the left gastroepiploic artery PtO2 decreased to 45.8 +/- ...
Tommasino C - - 1996
Cerebral air embolism occurred in a patient undergoing posterior fossa surgery performed in the sitting position for acoustic neuroma removal. The patient experienced two episodes of venous air embolism, as evidenced by precordial Doppler, end-tidal carbon dioxide reduction, and oxygen desaturation. In both cases, air was aspirated from the central ...
Ananthanarayan C - - 1996
Hysteroscopy has become a widely accepted technique in the diagnosis and treatment of various gynaecological conditions. The advent of the fibreoptic endoscope and distending media has largely been responsible for the increasing use of hysteroscopy. It is our aim in this article to review the literature on the frequently used ...
Smith J L - - 1995
BACKGROUND AND PURPOSE: Air and particulate emboli are a major source of morbidity during carotid endarterectomy (CEA); however, amplitude overload and poor time resolution have restricted the ability of transcranial Doppler ultrasound to differentiate between the two. METHODS: We have now overcome these two limitations by (1) rerouting embolic signals ...
Khan M - - 1995
Because no well-controlled study of inadvertent coronary air embolism has been done to truly quantify the incidence of this cardiac catheterization complication, we wanted to determine its incidence and severity in an active teaching medical center and assess approaches to treatment. We retrospectively reviewed 3,715 coronary angiogram and PTCA reports ...
Crawford A B - - 1995
To test the hypothesis that diffusion-limitation for oxygen is due to abnormal vascular dilatation and significantly contributes to the arterial hypoxaemia of liver cirrhosis requires an experimental approach that detects both diffusion-limitation for oxygen and the presence of abnormal dilatation of pulmonary vessels exposed to alveolar gas. We therefore studied ...
Booth T N - - 1995
Objective. Neonatal systemic air embolism (NSAE) has been thought to result from introduction of air into the pulmonary veins through hypothesized alveolar-capillary fistula. The objective of this paper is to reassess the distribution of intravascular air visualized radiographically in this entity. Based on these data, an alternative theory for the ...
Koizumi N - - 1995
Air density areas (ADAs) such as air bronchogram, bubble-like area, and cavity on high resolution computed tomography (HRCT) of pulmonary adenocarcinoma were examined to clarify their pathological implications. Forty-two resected specimens of pulmonary adenocarcinoma were histopathologically examined in correlation with the HRCT findings with particular emphasis on ADAs. Forty-one ADAs ...
Kyttä J - - 1995
Venous air embolism (VAE) is a recognized complication of surgery performed with the patient in the sitting position, but it occurs also during other operations. We report two cases of VAE, associated with a notable decrease in dynamic lung compliance, detected by side-stream spirometry. Based on these cases, an experiment ...
Parmet J L - - 1995
During total knee arthroplasty (TKA), instrumentation of the marrow cavity with an intramedullary guide appears responsible for fatal intraoperative pulmonary embolism. Transesophageal echocardiography demonstrates venous emboli (VE) after tourniquet deflation during intramedullary guided TKA. Extramedullary guides avoid manipulating the marrow cavity. We determined the incidence of VE in 20 patients ...
Lawryk N J - - 1995
In-vehicle exposures to selected gasoline-derived volatile organic compounds (VOCs) and formaldehyde were examined on 113 commutes through suburban New Jersey and on 33 New Jersey/New York commutes using measurements taken in two vehicles driven in tandem during 1991-1992. Overall median exposures to VOCs were lowest on the suburban commute, slightly ...
Joyce C J - - 1995
Pulmonary collapse is a common problem after coronary artery bypass graft surgery (CABG). If absorption atelectasis during anaesthesia is an important mechanism in the genesis of pulmonary collapse after CABG, the addition of nitrogen to the inspired gas during anaesthesia should reduce the amount of postoperative collapse. We studied 30 ...
Murray A - - 1995
An instrument has been developed for controlled inflation and deflation of an angioplasty balloon. The mean difference between inflation to 800 kPa in air and a simulated coronary artery is 71.2 kPa. The repeatability of four inflation/deflation cycles is 6.4 kPa with the balloon in air and 9.0 kPa in ...
Tingleff J - - 1995
BACKGROUND: Central nervous system damage remains a feared complication after heart operations. Air embolism (AE) is one of several possible causes of central nervous system damage. In previous studies, intraoperative transesophageal echocardiography (ITEE) has been used to detect AE, but identification of the periods of risk and the origin of ...
Saada M - - 1995
Systemic air embolism has been frequently reported after penetrating thoracic trauma. In blunt thoracic trauma, systemic air embolism has been rarely diagnosed, and then only after an invasive procedure such as thoracotomy. Transesophageal echocardiography has been recently introduced for the early assessment of trauma patients and is considered a sensitive ...
Sama A E - - 1995
The restrained (air bag and seatbelt) driver of a vehicle involved in a high-speed motor-vehicle accident sustained a tear of the thoracic aorta with no signs of external injury. Air bag deployment may mask significant internal injury, and a high index of suspicion is warranted in such situations.
Hennrikus W L - - 1995
We studied the effect of three methods of shoulder traction during arthroscopy on arterial oxygen saturation measured by a pulse oximeter applied to the fingertip of the arm in traction. Simple longitudinal traction ablated the oxygen saturation in only 1 of 30 patients. Adding vertical traction perpendicular to the arm ...
- - 1995
Septic shock remains an important cause of death and permanent disability in obstetric and gynecologic patients. Prompt recognition and diagnosis are critical to optimizing outcome. A thorough understanding of the pathophysiologic mechanisms operative in septic shock is important in treating these critically ill women. Immediate attention to oxygenation and hemodynamic ...
Annane D - - 1995
The pathophysiology of arterial air embolism inducing brain injuries remains unclear. Previous experiments demonstrated the usefulness of computed tomography (CT) in the detection of air emboli in canine brain. This canine study investigates CT's ability to detect small air bubbles and to determine the kinetics of air elimination from cerebral ...
Jørgensen J S - - 1995
During initial clinical tests to calibrate our reflectance pulse oximetry system, we observed serious physiologic limitations to the use of pulse oximetry in the forehead region. We present a case of simultaneous reflectance and transmission mode pulse oximetry monitoring in a child undergoing cardiac surgery for congenital cyanotic heart disease ...
Sharma S K - - 1995
This study was undertaken to examine the variation of the arterial to end-tidal PCO2 (Pa-PETCO2) difference during prolonged neurosurgical anaesthesia. Hyperventilation is often used to reduce intracranial pressure in neurosurgical patients. Continuous end-tidal CO2 monitoring is used as a guide between arterial CO2 measurements. We examined the stability of the ...
Bearden E F - - 1995
The care and management of the critically ill patient have seen major advances in the past 20 years. Conventional perfusion-monitoring technologies, as well as new technological advances and their potential impact, are discussed. The following monitoring technologies are reviewed: pulmonary artery pressure, cardiac output, arterial oxygen, mixed venous oxygen, and ...
Sakamoto T - - 1995
We report a patient with meningioma and radiological findings of erosive bony change, who developed venous air embolism via the diploic vein in the eroded inner table of the skull during craniotomy in the sitting position. The findings in our case suggest that preoperative radiological imaging evaluation can increase an ...
Langen H J - - 1995
OBJECTIVE: We artificially widened the extrapleural space with contrast medium or air in 33 cadavers to create a safe extrapleural route to the anterior mediastinum and the posterior mediastinum for large-bore needle biopsies. MATERIAL AND METHODS: Under CT guidance, 120 ml of diluted contrast medium (10%) or 300 ml of ...
Scuplak S M - - 1995
A case of venous air embolism during awake craniotomy is described. Chest pain and electrocardiographic changes were the major presenting features. Capnography detected a decrease in end-tidal carbon dioxide and demonstrates its use as an aid in the diagnosis of air embolism in the awake patient. Following this episode persistent ...
Nijland R - - 1995
OBJECTIVE: We studied the relationship between preductal arterial oxygen saturation and metabolic acidosis in 18 chronically instrumented fetal lambs (gestational age 119 to 133 days) in two experimental designs. In the first group the onset of metabolic acidosis was determined. In the second group the progression of metabolic acidosis was ...
Aikawa H - - 1995
We report a case of cerebral air embolism caused by right subclavian vein catheterization. A large amount of air was seen only over the left cerebral hemisphere on computed tomographic (CT) scans. Although neurological deficit was observed bilaterally at the onset, the degree of ischemic brain damage was far greater ...
Cottrell J J - - 1995
The ability of newer airliners to fly at higher altitudes has resulted in an increased altitude exposure to both airline crews and passengers. This increase in altitude exposure has the potential to place some individuals at risk for desaturation. Using pulse oximetry, the arterial oxygen saturation of 42 airline crew ...
Rescigno G - - 1995
Air embolism is still a major risk of open-heart surgery. Different techniques of air removal have been established, even though none is completely effective. Since 1989 the authors have used a new technique to avoid air passage into the left vent line when the left heart cavities are open. A ...
Sailors R M - - 1995
Pulse oximetry is widely used in critical care medicine to noninvasively estimate arterial hemoglobin oxygen saturation. Despite the obvious benefits of using pulse oximetry to detect life threatening desaturations, it is unknown how well pulse oximetry is able to predict the finer graduations of arterial oxygenation needed for clinical decision ...
Bouros D - - 1995
Studies investigating the epidemiology of tuberculosis in Greece are lacking. Tuberculosis (TB) continues to be a public health problem and its dimensions are not clearly defined. The aim of this study was to estimate the incidence of pulmonary and pleural TB in each of the three branches of military personnel ...
Schlichtig R - - 1995
PvCO2 that would result from full O2Hb desaturation at a given O2-CO2 exchange ratio, in the absence of metabolic acid, may be termed maximum respiratory venous PCO2 (PvmrCO2). This theoretical condition of 100% O2 extraction, in the absence of metabolic acid, should simulate maximum aerobic PCO2 in tissue, provided that ...
Muras I - - 1994
A case of post-traumatic cerebral air embolism is presented. In the chest-X-radiography fractures of many ribs and hemo-pneumothorax were visible on the right side associated with intra-alveolar, interstitial hemorrhages and mediastinal emphysema. At the end of a CT scan of the head appeared features of arterial air embolism. The patient ...
Gross G J - - 1994
Bidirectional cavopulmonary anastomosis (BCA) is thought to be beneficial in the palliation of patients with univentricular congenital heart disease considered at high risk for Fontan repair. Experience with patients undergoing BCA suggested that those who were older or larger at the time of surgery tended to be more cyanotic postoperatively ...
Noll M L - - 1994
Correlations of mixed venous and arterial oxygen saturation, heart rate, respiratory rate, and mean arterial pressure with arterial blood gas variables were computed for 57 sets of data obtained from 30 postoperative coronary artery bypass graft patients who were being weaned from mechanical ventilation. Arterial oxygen saturation and respiratory rate ...
Isert P - - 1994
With the widespread availability of capnography, many anaesthetists have swung away from formally verifying hypocapnia by intraoperative arterial blood gas analysis and, instead, have come to rely upon capnography as an acceptable and constant predictor of arterial CO2 tension (PaCO2) during neurosurgery. However, the nature of the arterial-end-tidal CO2 gradient ...
Buheitel G - - 1994
OBJECTIVE: To assess the reliability of estimation of cardiac index based on the mixed venous oxygen saturation and methods of improving the estimation of cardiac index. SETTING: PICU in an university hospital. DESIGN: In the post-operative period following complete repair of congenital heart disease we carried out 55 measurements of ...
Sharma K - - 1994
Venous air embolism in posterior fossa surgery is a well-documented complication. Various highly sensitive devices help in early detection of air embolism. In management of air embolism, sealing the site of air entry is an important step in preventing further episodes. Here we discuss the importance of inspiratory hold after ...
Haney M - - 1994
OBJECTIVE: To assess the accuracy of mixed venous hemoglobin oxygen saturation estimated, using in vivo pulmonary artery reflectance oximetry with ranging concentrations of carboxyhemoglobin. DESIGN: Criterion standard, a comparison of an alternative test to the "gold standard." SETTING: Laboratory animal facility of a large university. SUBJECTS: Five mongrel dogs. INTERVENTIONS: ...
Rozanski J - - 1994
Closure of a persistent ductus arteriosus through a median sternotomy on cardiopulmonary bypass in a 24-year-old man resulted in a tear of the descending aorta below the ductus. The repair of the aortic injury was attempted with deep hypothermia and low arterial flow, which resulted in massive air embolism of ...
Gallivan G J - - 1994
Aphonia, dysphonia, and laryngotracheal stenosis with upper airway compromise are diagnosed with increasing frequency. Endoscopic surgical reconstructive techniques accompanied by tracheal T-tube stenting successfully restore voice, airway function, and structure. Timing of tracheal T-tube removal remains controversial, particularly when the tip of the upper arm of the optimally sized T-tube ...
Chisholm D G - - 1994
Methaemoglobinaemia is an unusual cause of cyanosis whether it is congenital or acquired. Hence, the diagnosis may not be immediately obvious and appropriate treatment may be delayed. The case described shows that it should be considered when pulse oximetry and arterial blood gas analysis appear to give conflicting results. A ...
Kobayashi E - - 1994
50 open thymectomies were performed in adult rodents using intubation combined with a fibrin glue able to prevent hemorrhage and pulmonary air leakage. This method had a 100% success rate and lower mortality than the ordinal suction procedure. Although the conventional suction thymectomy has been widely used, the open thymectomy ...
Weaver L K - - 1994
This report describes a patient with mucormycosis treated with hyperbaric oxygen therapy (HBO2). Arterial O2 tension (PaO2) during HBO2 was considerably lower (346 mm Hg) than expected (1,500 mm Hg) due to an inadvertent right main-stem intubation, which was not otherwise clinically evident. This case illustrates the influence of a ...
< 4 5 6 7 8 9 10 11 12 13 14 >