Home About us Contact
|
Home About us Contact | ||
|
|
||
Angiographic Study (angiographic + study)
Selected AbstractsUSE OF HIGH-DOSE GADOLINIUM AS CONTRAST MEDIA TO AVOID RADIOCONTRAST MEDIA-INDUCED NEPHROPATHYJOURNAL OF RENAL CARE, Issue 1 2009Prajej Ruangkanchanasetr SUMMARY Patients at risk for radiocontrast media-induced nephropathy (RCIN) with suspected peripheral vascular disease were evaluated with high-dose (0.4 mmol/kg) gadolinium-based (Gd) contrast angiography (AG). The patients who were considered susceptible to RCIN were defined by having one or more of the following: (1) pre-existing serum creatinine (SCr) >124 ,mol/l, (2) diabetes mellitus and (3) age >60 years. An increase in SCr , 44 ,mol/l or , 25% of baseline was considered significant. Ten patients underwent peripheral AG using a high dose of Gd without any adverse reaction. The mean age was 67.8 years. Nine (90%) patients were diabetic. The quality of these images was satisfactory for diagnosis in eight out of 10 patients. None of these patients had significant change in SCr. The mean SCr (±SD) before, at 48 hours and at 72 hours after AG were 182 ± 97, 177 ± 99 and 177 ± 98 ,mol/l, respectively. Based on this limited study, Gd is a promising agent for peripheral angiographic study. In patients at risk for RCIN, the high dose of Gd appears to be safe without obvious nephrotoxicity. [source] Feasibility and safety of transbrachial approach for patients with severe carotid artery stenosis undergoing stentingCATHETERIZATION AND CARDIOVASCULAR INTERVENTIONS, Issue 6 2006Chiung-Jen Wu MD Abstract Although sporadic successful cases using the transradial approach (TRA) for carotid stenting have been reported, the safety and feasibility of carotid stenting using either TRA or a transbrachial approach (TBA) have not been fully investigated. Recently, we have developed a safe and feasible method of TRA for cerebrovascular angiographic studies. This study investigated whether a TBA approach using a 7-French (F) Kimny guiding catheter for carotid stenting is safe and feasible for patients with severe carotid stenosis. Thirteen patients were enrolled into this study (age range, 63,78 years). Seven of these 13 patients had severe peripheral vascular disease. A retrograde-engagement technique, involving looping 6-F Kimny guiding catheter, was utilized for carotid angiographic study. For carotid stenting, the 6-F Kimny guiding catheter was replaced with a 7-F Kimny guiding catheter, and the procedure was performed as the follows. First, an extra-support wire was inserted into the middle portion of external carotid artery (ECA). Second, a 0.035-inch Teflon wire was advanced into the common carotid artery. Then, the 6-F guiding catheter was exchanged for a 7-F Kimny guiding catheter. Third, if the first and second steps did not provide adequate support for exchanging the guiding catheter, a PercuSurge GuardWireÔ was inserted into the ECA, followed by distal balloon inflation for an anchoring support. FilterWire EXÔ was used in 9 patients and PercuSurge GuardWire in 4 patients to protect from distal embolization during the procedure. The procedure was successful in all patients. No neurological or vascular bleeding complications were observed and all patients were discharged uneventfully. The TBA for carotid stenting was safe and effective, providing a last resort for patients unsuited to femoral arterial access and surgical intervention. © 2006 Wiley-Liss., Inc. [source] A case of central visual loss in a child due to macular cavernous haemangioma of the retinaACTA OPHTHALMOLOGICA, Issue 5 2002Soheila Naftchi ABSTRACT. Purpose:, To report a case of retinal cavernous haemangioma localized to the fovea. Methods:, Clinical examination, fluorescein angiographic study and magnetic resonance imaging are reported. Results:, A 9-year-old girl presented with acute loss of vision in the right eye. Ophthalmoscopy showed intraretinal bleeding in the macula, while fluorescein angiography showed a lesion typical of a small cavernous retinal haemangioma, localized in the central macula. Family history was negative. Conclusion:, Central cavernous retinal haemangioma is a rare cause of central visual loss and should be distinguished from other retinal vascular abnormalities with more profound systemic implications for the patient. [source] The arterial anatomy of the Achilles tendon: Anatomical study and clinical implicationsCLINICAL ANATOMY, Issue 3 2009Tony M. Chen Abstract The Achilles tendon is the most frequently ruptured tendon in the lower limb and accounts for almost 20% of all large tendon injuries. Despite numerous published studies describing its blood supply, there has been no uniformity in describing its topography. The current study comprises a detailed anatomical study of both the intrinsic and extrinsic arterial supply of the Achilles tendon, providing the detail sought from studies calling for improved planning of surgical procedures where damage to the vascularity of the Achilles tendon is likely. A dissection, microdissection, histological, and angiographic study was undertaken on 20 cadaveric lower limbs from 16 fresh and four embalmed cadavers. The Achilles tendon is supplied by two arteries, the posterior tibial and peroneal arteries. Three vascular territories were identified, with the midsection supplied by the peroneal artery, and the proximal and distal sections supplied by the posterior tibial artery. The midsection of the Achilles tendon was markedly more hypovascular that the rest of the tendon. The Achilles tendon is at highest risk of rupture and surgical complications at its midsection. Individuals with particularly poor supply of the midsection may be at increased risk of tendon rupture, and approaches to the tendon operatively should consider the route of supply by the peroneal artery to this susceptible part of the tendon. Clin. Anat. 22:377,385, 2009. © 2009 Wiley-Liss, Inc. [source] | ||||||||||