Nov 2, 2022 · There can be one or more obtuse marginal arteries. It typically traverses along the left margin of heart towards the apex. The first obtuse marginal artery (OM1) is usually found on or close to the obtuse margin of the heart and is also known as the “margo obtusus”. 1. O'Brien JP, Srichai MB, Hecht EM, Kim DC, Jacobs JE.

Nov 13, 2016 · Catheter tip can be seen engaged in the ostium of the saphenous vein graft (SVG – medical abbreviation) in the ascending aorta. Part of the catheter in the descending aorta is also visible as it is a transfemoral coronary angiogram.

Nov 8, 2016 · Major OM: Major obtuse marginal branch of left circumflex (LCX) coronary artery. In this case LCX is continuing as major OM and distal LCX in the atrioventricular groove is a relatively small vessel. Distal LCX shows tight stenosis at the point beyond the origin of major OM. Major OM has a proximal irregular stenosis involving a short segment.

Oct 30, 2014 · The first obtuse marginal artery (OM1) along with the acute marginal artery are used to denote the lower portion of the heart and the location of the cardiac apex in coronary angiography. There is an anatomical variation of the origin of OM1 where this artery arises at the bifurcation of the left coronary artery where this artery takes the name ...

This article provides an overview of the radiological equipment used in the catheter laboratory, details the naming of the different angiographic projections, and gives key tips and tricks to improve image quality.

The dominant left circumflex artery showed an occlusion of the ostial obtuse marginal branch (OM1). The angiogram revealed an anomalous origin of the RCA from the midportion of the LAD shortly after the second septal perforator, with morphology and distal branches similar to those of the normal RCA.

Nov 18, 2014 · Patient underwent rotational atherectomy and two Promus PREMIER DES to distal RCA with excellent results. Patient is now planned for staged PCI of proximal LCX, OM1 and OM2 bifurcation with planned two stent strategy.

Aug 10, 2016 · We describe 2 cases of the mother–daughter–granddaughter double GuideLiner technique using a 6 Fr GuideLiner inside an 8 Fr GuideLiner to perform highly challenging PCI.

Diagnostic angiography revealed two-vessel disease: a severely calcified subocclusive lesion in the left circumflex artery (LCX) at the first obtuse marginal (OM1) branch bifurcation as the main culprit vessel (Figure 1) and a long chronic total occlusion (CTO) at the mid-right coronary artery (RCA) with excellent retrograde filling flow from th...

Kissing balloon dilatation with balloons 3.0-15 mm in LCX and 2.0-12 mm OM1. Proximal optimization dilatation with balloon 3.25-6 mm. Obtaining final angiograms after intracoronary Nitro.