Biomedical subjects

Jean Jeudy

Publications and source records attributed to Jean Jeudy.

4 recordsLinked to original sources

PubMed2006

Aortic valve bypass for aortic stenosis: imaging appearances on multidetector CT.

OBJECT: Aortic valve bypass is a technique used in high-risk patients with critical aortic stenosis that consists of placement of a conduit from the left ventricular apex to descending aorta. We describe the imaging appearances of this apicoaortic conduit on multidetector CT (MDCT). METHODS: Each patient underwent retrospective ECG-gated MDCT using a 16-detector-row scanner several days after placement of an apicoaortic conduit. All images were assessed by two radiologists who reviewed the appearance of the apicoaortic conduit and any post-operative complications. Follow-up studies were available for several patients. RESULTS: Twelve patients (9 men, 3 women, mean age - 78 years) underwent evaluation and the conduit was visible in each. The valve within the conduit was visible in ten (91%) of the 11 patients who received intravenous contrast material. Common findings were periconduit outpouching and hypoperfusion involving the left ventricle. Complications included pericardial hemorrhage, hemothorax and ventricular pseudoaneurysm. Mild to moderate increase in wall thinning was identified in the three patients who underwent follow-up imaging. CONCLUSION: Aortic valve bypass with an apicoaortic conduit appears to be a feasible alternative to aortic valve replacement in high-risk patients. MDCT is an excellent method to assess the imaging features of such conduits.

Aged↗

PubMed2006

Nontraumatic thoracic emergencies.

Acute chest pain is one of the most common complaints of patients who present to an emergency department, and accounts for up to 5% of all visits. It also is one of the most complex issues in an emergency setting because, although clinical signs and symptoms often are nonspecific, rapid diagnosis and therapy are of great importance. The chest radiograph remains an important component of the evaluation of chest pain, and usually is the first examination to be obtained. Nevertheless, cross-sectional imaging has added greatly to the ability to characterize the wide constellation of clinical findings into a distinct etiology. This article reviews how the various entities that can present as nontraumatic chest pain can manifest radiographically.

Acute Disease↗

PubMed2006

Acute lung infections in normal and immunocompromised hosts.

Pulmonary infections are among the most common causes of morbidity and mortality worldwide, and contribute substantially to annual medical expenditures in the United States. Despite the availability of antimicrobial agents, pneumonia constitutes the sixth most common cause of death and the number one cause of death from infection. Pneumonia can be particularly life-threatening in the elderly, in individuals who have pre-existing heart and lung conditions, in patients who have suppressed or weakened immunity, and in pregnant women. This article discusses some of the important causes of acute lung infections in normal and immunocompromised hosts. Because there often is considerable overlap, infections are categorized by the host immune status that is most likely to be associated with a particular pathogen.

AIDS-Related Opportunistic Infections↗

PubMedDate not supplied

Takayasu aortitis with acute dissection and hemopericardium.

We report a case of a 57-year-old woman with an unremarkable past medical history who presented to the emergency department with maxillary pain that later radiated to the chest. She died less than 12 h after admission. CT findings were consistent with ascending aorta dissection with hemopericardium. Autopsy revealed a tear immediately proximal to the ostium of the brachiocephalic artery and a dissecting flap with false lumen, rupture, and hemopericardium. Histologically, there was a zonal medial necrosis with surrounding chronic inflammation, focal destruction of the media, and fibrosis of the intima and adventitia. A diagnosis of granulomatous necrotizing aortitis of Takayasu type was made. This case demonstrates a rare example of aortitis underlying aortic dissection and emphasizes the need for careful histologic examination in cases of aortic root disease.

Aortic Dissection↗