Original Articles: PDF OnlyFalse-Positive Lung Imaging: Inadvertent Injection Into a Pulmonary Artery CatheterBRACHMAN, MICHAEL M.D.; TANASESCU, DOINA M.D.; RAMANNA, LALITHA M.D.; BERMAN, DANIEL M.D.; WAXMAN, ALAN M.D. Author Information From the Cedars-Sinai Medical Center, Los Angeles, California Clinical Nuclear Medicine: October 1979 - Volume 4 - Issue 10 - p 415-416 Buy Abstract A case of a ventilation-perfusion mismatch seen postoperatively in a patient with chest pain is reported. There was absence of perfusion to the right lung, with relatively normal ventilation. The study was initially interpreted as indicating a high probability of pulmonary embolus. It was then discovered that the injection had been inadvertently made into a Swan-Ganz catheter, with its tip in the left main pulmonary artery. The mismatch was therefore iatrogenic and not related to pulmonary embolus. The false-positive lung imaging which resulted has not been previously reported in the literature. © Lippincott-Raven Publishers.
