ISSN:0883-5993    

出版商:OVID    

年代:1994

数据来源: OVID

摘要:

A plain film chest examination is nearly always obtained in the management of patients suspected of cardiac disease. The wealth of diagnostic information obtained from posteroanterior and lateral thoracic images is often essential data needed to direct the evaluation and treatment of these patients. Appreciation of the normal cardiac, pulmonary, and great vessel anatomy provides a basis for the identification and characterization of the abnormal. Furthermore, the chest radiograph provides an important means to appreciate the pathophysiologic mechanisms underlying the morphologic changes in patients with congenital heart disease.

ISSN:0883-5993    

出版商:OVID    

年代:1994

数据来源: OVID

摘要:

Some patients with congenital cardiac anomalies develop their first symptoms as adults, and many more will survive to adulthood with congenital lesions that have been treated surgically. Magnetic resonance imaging (MRI) currently provides sufficient morphological information to allow the anatomical diagnosis of congenital abnormalities involving the heart and the great arteries. Newer MR techniques have also been developed that provide functional information such as measurements of valve gradients, stroke volumes, regurgitant volumes, and shunt volumes. Cardiac evaluation utilizing MR techniques may soon replace cardiac catheterization for the preoperative diagnosis of congenital heart disease and its long-term follow-up.

ISSN:0883-5993    

出版商:OVID    

年代:1994

数据来源: OVID

摘要:

Congenital variations in the development of the thoracic aorta are common. Although there is a spectrum of disease in all age groups, arch anomalies that present in childhood and those that present in the adult tend to be of differing types. Imaging of the arch and its branches, the descending aorta, and the ductus arteriosus or ligamentum arteriosum define the morphology of the arch and permit a reasonable prediction of accompanying congential heart disease and/or vascular ring.

ISSN:0883-5993    

出版商:OVID    

年代:1994

数据来源: OVID

摘要:

We review the radiologic findings of normal positioning, malpositioning, and complications related to the more commonly used thoracic venous catheters. These include central venous catheters, long-term central venous access catheters, and pulmonary artery catheters. The radiologist plays an important role in the early recognition of the complications of these catheters. The daily practice of chest radiology is intimately related to the evaluation of the integrity and correct placement of thoracic venous catheters. The purpose of this pictorial essay is to review radiologic findings of normal positioning, malpositioning, and complications related to the more common devices used, including central venous catheters, long-term central venous access catheters, and pulmonary artery catheters. Many of the complications described are serious and may remain unrecognized for a long time; this may cause incorrect diagnosis and delayed treatment. The radiologist plays an important role in the early recognition of these complications. Malpositioning and complications often are more easily diagnosed with contrast-enhanced studies and computed tomography.

ISSN:0883-5993    

出版商:OVID    

年代:1994

数据来源: OVID

摘要:

The posterior descending artery (PDA) arises from the right coronary artery (RCA) in ~85% of people; only in from 10 to 15% does it arise from the circumflex artery. We report an unusual case of origin of the PDA from a branch of the left anterior descending artery (LAD). The PDA passed through the interventricular septum before it reached the posterior interventricular groove.

ISSN:0883-5993    

出版商:OVID    

年代:1994

数据来源: OVID

摘要:

Cardiorrhexis, or rupture of the myocardium, is an uncommon event after acute myocardial infarction. It has serious consequences such as acute hemopericardium, cardiac tamponade, and sudden death. If the rupture remains enclosed by surrounding adhesions or an intact visceral pericardium, a pseudoaneurysm may develop. We describe a rather typical presentation of a pseudoaneurysm of the left ventricle with resultant congestive heart failure after a silent myocardial infarction, and we point out the utility of prompt ultrasound examination in this clinical setting.

ISSN:0883-5993    

出版商:OVID    

年代:1994

数据来源: OVID

摘要:

The remarkable advances in diagnostic techniques and in the surgical and medical care of infants and children with congenital heart disease have resulted in an impressive increase in longevity. Congenital heart disease in adults has emerged as a specialized area of cardiovascular interest. In response, special multidisciplinary facilities have been developed for the comprehensive care of adults with congenital heart disease. The scope of the discipline is relatively broad and includes unoperated survival patterns; survival patterns after surgery or interventional catheterization; a host of medical considerations; surgical considerations (operation and reoperation, cardiac catheterization as a therapeutic intervention, and noncardiac surgery); and the important problems of postoperative residua and sequelae. The purpose of this communication is to call attention to this subspecialty and to excite the interest of radiologists in certain imaging aspects of congenital heart disease in adults.

ISSN:0883-5993    

出版商:OVID    

年代:1994

数据来源: OVID

摘要:

We describe the clinical and radiographic features of four premature infants with acute iatrogenic tracheobronchial perforation by endotracheal tube (ETT) placement. One tube penetrated posteriorly into the esophagus, one directly through the carina; one perforated the right main bronchus posteriorly; and one breached the site of a recently repaired tracheoesophageal fistula. In only one infant was the intubation procedure clinically recognized to be traumatic. Radiographs obtained for tube placement demonstrated inferior malposition of the ETT in all four babies, decreased pulmonary aeration in three of four, acute retrocardiac infraazygos pneumomediastinum in three of four, and acute pleural effusion in one of four. Two infants developed progressive air leak and died in spite of drainage with multiple chest tubes; two survived and did well with conservative management. An additional eight cases have been previously reported, with an overall mortality of 58%. Prompt recognition of acute airway perforation can be lifesaving. Unexpected respiratory distress after intubation associated with acute infraazygos pneumomediastinum strongly suggests this entity.

ISSN:0883-5993    

出版商:OVID    

年代:1994

数据来源: OVID

摘要:

The ease of performing computed tomography (CT)-guided radiologic procedures with the patient in the prone position can be compromised by patient discomfort. This is especially true during transthoracic needle aspiration biopsy when sedation or analgesia may interfere with the patient's ability to cooperate. The Glenn Face Down Pillow, a foam cushion with air vents that allows unimpeded respiration with the patient entirely prone, was tested in 34 such biopsies over a 1-year period. Patient compliance was better than with conventional cushions and padding, and procedural problems related to motion from cramping and stiffness were reduced.

ISSN:0883-5993    

出版商:OVID    

年代:1994

数据来源: OVID