Journal of vascular and interventional radiology : JVIR
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J Vasc Interv Radiol · May 1993
Puncturing the pulseless femoral artery: a simple technique that uses palpation of anatomic landmarks.
The authors report a simple technique in which palpation of anatomic landmarks is used to localize the pulseless common femoral artery. ⋯ The described technique was found to be quick, simple, and reliable and is now the authors' method of choice for puncturing the pulseless femoral artery.
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J Vasc Interv Radiol · May 1993
Effects of central venous catheter placement on upper extremity duplex US findings.
The upper extremity veins of 17 patients who underwent operative central venous catheter placement were studied prospectively with color duplex sonography to determine which duplex changes, if any, could be due to the presence of the catheter alone and to determine if these waveform changes could mimic the dampened waveform seen peripheral to central nonvisualized or nonocclusive thrombosis or proximal stenosis. ⋯ In this clinical setting, the hemodynamic changes within the vein from the catheter placement are minimal. Any damping of the venous waveform seen with sonography performed to rule out upper extremity deep venous thrombosis secondary to indwelling catheter--for example, loss of atrial pulsatility or respiratory phasicity--is presumably due to the presence of venous thrombosis or stenosis.