Doppler ultrasound technique for safer percutaneous catheterization of the infraclavicular subclavian vein.
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Biomedical subjects
Publications and source records attributed to J L Peters.
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Pulmonary pseudolymphoma is a rare lesion; only 30 cases have been previously reported. It presents as a solitary nodule which clinically and roentgenographically can resemble bronchogenic carcinoma. A further case is reported in which preoperative needle aspiration cytology played a role in diagnosis. Although the lesion was originally believed to be benign, a review of the literature has revealed the apparent subsequent development of lymphoma in four cases. The significance of this is discussed, and the need for prolonged follow-up is emphasized, since the prognosis of untreated pseudolymphoma is unknown.
Transapical left ventricular bypass which withdraws blood directly from the left ventricular apex through a roller pump and outflow filter with return to the femoral artery has been applied in 6 patients with cardiac failure. All patients required total TALVB (with the aortic valve closed) for periods of one to 144 hrs, and 2 patients had recovery of life-sustaining myocardial function, allowing removal of the TALVB system. One patient had complete recovery without other organ dysfunction. Total TALVB continuously decompresses and unloads the left ventricle throughout systole and diastole, and maintains the circulation in otherwise terminal circumstances.
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The first case of a carotid body chemodectoma that was diagnosed using dynamic radionuclide perfusion angiography and subsequently excised is presented. The value of this technic in the investigation of pulsatile tumors is emphasized.