Tamponamento Cardíaco por Migração Intratorácica de Fio de Kirschner

Apresentamos um caso raro de migração de fio de Kirschner usado para osteossíntese de fractura multifragmentar de colo do úmero causando tamponamento cardíaco por lesão do tronco da artéria pulmonar e lesão do lobo superior esquerdo do pulmão. Reportamos o caso de uma doente do sexo feminino de 65 anos de idade, admitida no Serviço de Urgência após queda acidental, que resultou em fractura multifragmentar do colo do úmero tratada cirurgicamente com implantação percutânea de três fios de Kirschner. Seis dias após a intervenção, a doente iniciou um quadro de dor torácica lancinante com irradiação ao braço e região dorsal esquerda, dispneia e ortopneia, tendo sido readmitida dois dias mais tarde no Serviço de Urgência onde a telerradiografia do tórax revelou a migração de um fio de Kirschner para a cavidade intratorácica e alargamento do mediastino. O ecocardiograma confirmou o diagnóstico de tamponamento pericárdico e a TAC do tórax complementar demonstrou a migração do fio de Kirschner para a cavidade pleural esquerda.

A Homemade Snare: An Alternative Method for Mechanical Removal of Dirofilaria Immitis in Dogs

Canine dirofilariosis is a life-threatening parasitic disease that is increasingly reported worldwide. Once diagnosed the main treatment goals are to improve the animal's clinical condition and to eliminate all life stages of the parasite with minimal posttreatment side effects. This can be achieved through mechanical, surgical, or chemotherapeutical approaches. Currently, manual extraction is the preferred method to remove adult heartworms due to its diminished invasiveness, reduced damage to the vascular endothelium, and shortened anaesthesia duration. However, it remains an expensive technique that can be highly traumatic. To address this issue, a nontraumatic homemade catheter-guided snare was developed for heartworm removal by adapting and folding a 0.014-inch coronary wire (BMW, Abbott Vascular). Transvenous heartworm extraction was performed on a dog severely infected with adult heartworms by inserting the modified snare into a 6-F Judkins right coronary guiding catheter BMW (Cordis) and advancing it into the right ventricle under fluoroscopic guidance. Fifteen adult specimens of Dirofilaria immitis were successfully extracted from the pulmonary artery and right ventricle without complications. To assure the death of both larvae and adults, postoperative treatment was successfully managed using ivermectin, doxycycline, and melarsomine, with no recurrence after surgery.