Aneurysms infectious

Cocaine abuse is a risk factor for myocardial ischemia, infarction, and dysrhythmias, as well as pulmonary edema, ruptured aortic aneurysm, infectious endocarditis, vascular thrombosis, myocarditis, and dilated cardiomyopathy (35). 

Cocaine abuse is a risk factor for myocardial ischemia, infarction, and dysrhythmias, as well as pulmonary edema, ruptured aortic aneurysm, infectious endocarditis, vascular thrombosis, myocarditis, and dilated cardiomyopathy (32). Acutely, cocaine suppresses myocardial contractility, reduces coronary caliber and coronary blood flow, induces electrical abnormalities in the heart, and increases heart rate and blood pressure. These effects can lead to myocardial ischemia (33,34). However, intranasal cocaine in doses used medicinally or recreationally does not have a deleterious effect on intracardiac pressures or left ventricular performance (35). 

Acute myocardial infarction Angiopathy Aortic aneurysm Aortic balloon assist devices Giant hemangiomas Peripheral vascular disease Postcardiac arrest Prosthetic devices Raynaud s syndrome Infectious Arbovirus Aspergillus Candida albicans Cytomegalovirus Ebola virus... 

Origuchi N, Komiyama T, Ohyama K, Wakabayashi T, Shigematsu H. Infectious aneurysm formation after depot acupuncture. Eur J Vase Endovasc Surg 2000 20(2) 211-13. 

The first infectious intracranial aneurysm was probably described by Church in 1869 when he established a relationship between an intracranial aneurysm and infectious endocarditis. The term infectious aneurysm should be preferred bacterial or mycotic should be used only if bacteria or fungi are demonstrated as the causative organisms. The frequently used term mycotic is misleading in the vast majority of patients because bacterial infection represents the most common cause for infectious... 

Fig. 5.4a-c. Infectious aneurysm of the right posterior cerebral artery. T2-weighted image (a), FLAIR image (b) with subarachnoid blood around the aneurysm and DSA (c)... 

The course of infectious aneurysms is unpredictable. Under antibiotic or antimycotic therapy they may shrink, or completely disappear. However, enlargement during treatment has also been reported (Brust et al. 1990). Septic aneurysms can be obliterated surgically or by endovascular treatment (Chapot et al. 2002 Phuong et al. 2002 Steinberg et al. 1992). The theoretical assumption that implantation of foreign material - like platinum coils - into an infectious lesion might worsen the problem is not true for infectious intracranial aneurysms. Mortality due to rupture of bacterial cerebral aneurysms is reported to be up to 60% (Barrow and Prats 1990 Bohmfalk et al. 1978 Clare and Barrow 1992). 

There is no scientific opinion about screening high risk patients for infectious aneurysms, e.g. those with a bacterial endocarditis. However, this maybe a field of collaboration between cardiologists and neuroradiologists. 

Aneurysms of the posterior cerebral artery (PCA) are relatively rare compared with those in other locations. Extremely rare are singular berry aneurysms of the PCA. Often, this type of aneurysm is either associated with the incidence of multiple aneurysms or with other vascular disorders like ar-terious-venous-malformations, moyamoya disease or ipsilateral internal carotid occlusion for various reasons. Other rare causes are infectious and post-traumatic conditions. Some authors figured out that the incidence of PCA aneurysms is approximately... 

Clare CE, Barrow DL (1992) Infectious intracranial aneurysms. Neurosurg Clin North Am 3 551-566 Cloft HJ (2007) HEAL Investigators. HydroCoil for Endovascular Aneurysm Occlusion (HEAL) study 3-6 month angiographic follow-up results. AJNR Am J Neuroradiol 28(1) 152-154... 

Kannoth S, Iyer R, Thomas SV, Furtado SV, Rajesh BJ, Kesa-vadas C, Radhakrishnan VV, Sarma PS (2007) Intracranial infectious aneurysm presentation, management and outcome. J Neurol Sci 256(l/2) 3-9. Epub 2007 Mar 23 Kassell NF, Torner JC (1983) Size of intracranial aneurysms. Neurosurgery 12 291-297... 

The superior mesenteric artery aneurysm is the third most common VAA but only accounts for 6% of all splanchnic aneurysms. It is typically associated with an infectious etiology such as endocarditis. Thrombosis and dissection can be seen with these lesions and patients can present with symptoms of mesen-... 

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