Category: P

  • Percutaneous transhepatic cholangiography

    An X-ray technique in which dye is injected through the liver into the bile duct to detect obstruction. A percutaneous transhepatic cholangiogram is a radiographic examination of the bile ducts using X-rays. In this procedure, a needle is inserted through the skin and passed across or over the liver. The needle is then directed into…

  • Percussion and auscultation

    Tapping various body areas such as the front and back of the chest, and listening to organs such as the heart or lungs with a stethoscope, usually during a physical examination.  

  • Penicillinase-producing Neisseria gonorrhoeae

    A gonorrheal infection caused by organisms containing a substance (penicillinase) that resists treatment with penicillin. A special type of penicillinase-resistant penicillin must be used to treat these cases.  

  • Penicillin hypersensitivity skin test

    A test done to determine sensitivity (allergy) to penicillin. A highly dilute solution of penicillin is injected into the skin. If no allergic reaction occurs, it’s safe to administer the drug.  

  • Paul-Bunnell test

    A blood test for heterophil antibodies, used to confirm the diagnosis of infectious mononucleosis. A test for mononucleosis based upon the fact that patients with this disease develop antibodies which agglutinate sheep red blood cells. A blood test, alternatively known as the heterophil agglutination test, employed to identify Epstein–Barr virus infection, responsible for glandular fever.…

  • Partial pressure of oxygen

    The portion of total gas pressure exerted by oxygen in its gas phase in equilibrium with blood; decreased in obstructive lung disease, asthma, heavy exercise, and certain blood diseases.  

  • Partial pressure of carbon dioxide

    The portion of total gas pressure exerted by the carbon dioxide in blood; increased in certain respiratory conditions and in chest injuries, decreased in uncontrolled diabetes, liver or kidney disease, severe diarrhea, and during rapid breathing.  

  • Paroxysmal tachycardia

    An sudden increase in the heart rhythm that produces a very rapid heart rate. A type of tachycardia (unusually fast heartbeat) that tends to emerge suddenly and cease just as swiftly. It might arise from irregular muscle contractions within one of the heart’s chambers.  

  • Paroxysmal atrial tachycardia

    A sudden increase in the heart rate to as much as 100-200 beats per minute. Symptoms include a fast, fluttering sensation in the chest, along with feelings of weakness, palpitations, low blood pressure, and shortness of breath. A term formerly used for paroxysmal supraventricular tachycardia (“paroxysmal” implies that the arrhythmia begins and ends suddenly).  

  • Pacemaker installation fluoroscopy

    Fluoroscopic monitoring used to guide the insertion of a pacemaker.