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Biomedical subjects

P M Pop

Publications and source records attributed to P M Pop.

2 recordsLinked to original sources
PubMed1982

Tension pneumocephalus.

Sixteen patients with intracranial air under tension and severe neurological symptoms following trauma and neurosurgical procedures were reviewed. Computed tomography (CT) was performed in cadavers following selective air injections into the epidural, subdural, and subarachnoid spaces. The characteristic CT appearance of air in the various intracranial compartments is illustrated. The typical "peaking" of the frontal lobes in subdural tension pneumocephalus is explained by bridging veins entering the superior sagittal sinus. Stretching and rupturing of these veins may be implicated as a cause for a concomitant subdural hematoma. The various mechanisms causing tension pneumocephalus and its appropriate therapy are discussed.

Adult↗
PubMedDate not supplied

Malposition of a total parenteral nutrition catheter in the accessory hemiazygos vein.

A total parenteral nutrition catheter was surgically introduced into the left cephalic vein of a 31-yr-old man with regional enteritis. After placement, a frontal radiograph indicated malplacement of the catheter. Its left vertical paramedian position indicated a left internal thoracic vein, a persistent left superior cava, or a left superior intercostal-accessory hemiazygos vein position. The left internal thoracic vein is very anterior within the thorax, a persistent left superior vena cava is centrally located, and the left superior intercostal-accessory hemiazygos vein is quite posterior. A lateral radiograph revealed a markedly posterior catheter course, with its tip at the level of the vertebral bodies. A venogram confirmed its location within the left superior intercostal-hemiazygos vein. The catheter was removed and replaced. After placement of all total parenteral nutrition catheters, a chest radiograph should be obtained. A single frontal film is usually adequate; if not, a supplemental lateral view may be taken. If uncertainty still exists, a venogram through the catheter may be obtained for precise localization.

Adult↗