Single incision laparoscopic surgery approach for obscure small intestine bleeding localized by CT guided percutaneous injection of methylene blue

INTRODUCTION: Traditionally, localization of small intestine sources of obscure gastrointestinal bleeding has been a challenge. Advances in the field of endoscopy with the introduction of capsule endoscopy and radiographic imaging with computed tomography angiography and visceral angiography have facilitated more accurate visualization of the small intestine. If a bleeding lesion is identified on angiography and surgery is indicated, the use of methylene blue for enteric mapping is very effective to aid intraoperative localization of the culprit. However, when this is not an option, more invasive surgical techniques are required. PRESENTATION OF CASE: We present a new technique used in a patient with angiodysplasia of the small intestine, in where preoperative localization was done using percutaneous computed tomography (CT) guided injection of methylene blue dye. This allowed us to perform a single incision laparoscopic small intestine resection of the culprit

EPR study of the Ag6S3O4 compound prepared by two methods

The temperature dependence of the EPR spectra of the recently discovered Ag6S3O4 phase in the Ag-O-S system prepared by two methods, the known method of co-precipitation from aqueous solution and a new method depending on the interaction of Ag2S and Ag2SO4 solid reagents, has been investigated. No EPR spectra were observed at room temperature, while at liquid helium temperature a number of EPR spectra have been recorded, which disappeared upon increasing temperature up to liquid nitrogen temperature. The sample obtained by the co-precipitation method revealed an intense, rich EPR spectrum that has been tentatively interpreted assuming the presence of at least two different Ag2+ ion complexes, one monomer resulting in an intense anisotropic, rhombic EPR powder pattern with g(1) = 1.93(1), g(2) = 2.025(3), g(3) = 2.094(5), hyperfine constants A(1) = A(2) = 60(5).10(-4) cm(-1), A(3) = 90(5).10(-4) cm(-1) and one dimer EPR pattern presumably involving a pair of Ag2+ ions with internuclear separation of 4.3 Angstrom. However, the presence of larger clusters could not be excluded. On the other hand, the sample obtained by a solid state reaction method has given rise to two rather weak EPR lines centered at g(eff) = 2.105(3) acid g(eff) = 4.213(3), respectively

Acute myocardial infarction following right coronary artery dissection due to blunt trauma

Despite the frequent occurrence of blunt chest trauma, associated cardiac injuries are relatively rare. The most common presentation of blunt cardiac injury is benign arrhythmia (e.g., sinus tachycardia), followed in decreasing frequency by increasingly severe arrhythmias and finally physically evident injuries to the heart muscle, the conducting system, cardiac valves, and/or coronary vessels. Here we present an unusual case of a patient who sustained a right coronary artery dissection and associated acute myocardial infarction following a motor vehicle crash