Chest
-
Comparative Study
Optical differentiation between malignant and benign lymphadenopathy by grey scale texture analysis of endobronchial ultrasound convex probe images.
Morphologic and sonographic features of endobronchial ultrasound (EBUS) convex probe images are helpful in predicting metastatic lymph nodes. Grey scale texture analysis is a well-established methodology that has been applied to ultrasound images in other fields of medicine. The aim of this study was to determine if this methodology could differentiate between benign and malignant lymphadenopathy of EBUS images. ⋯ Grey scale texture analysis of EBUS convex probe images can be used to differentiate malignant and benign lymphadenopathy. Preliminary results are comparable to FDG-PET-CT scan.
-
Editorial Comment
Obstructive sleep apnea: the elephant in the cardiovascular room.
-
The purpose of this article is to review the Health Insurance Portability and Accountability Act (HIPAA), the Privacy Rule, the Security Rule, and common issues encountered by researchers related to these federal privacy and security requirements. This article discusses the misconceptions that researchers may hold about HIPAA, including the process for reviewing protected health information when preparing to conduct a study, potential constraint on participant recruitment, and application of HIPAA to a researcher's clinical population. We also present ways to reframe the negative connotations associated with this regulation and provide tips for researchers about how to work with HIPAA when planning and conducting a study and reporting on study findings. Finally, we suggest that the principles of HIPAA be considered when conducting studies in international settings.
-
Neurogenic pulmonary edema (NPE) is a clinical syndrome characterized by the acute onset of pulmonary edema following a significant CNS insult. The cause is believed to be a surge of catecholamines that results in cardiopulmonary dysfunction. ⋯ We present a case of NPE caused by an intracranial hemorrhage from a ruptured arteriovenous malformation. We uniquely document a rise and fall of serum catecholamine levels correlating with disease activity and a dramatic clinical response to IV phentolamine.