| IVC | inferior vena cava; inspiratory vital capacity; integrated vector control; intravascular coagulation... |
|---|---|
| IVCP | inferior vena cava pressure |
| IVCR | inferior vena cava reconstruction |
| IVCT | inferior vena cava thrombosis; intravenously enhanced computed tomography |
| MOIVC | membranous obstruction of the inferior vena cava |
| persistent anterior hyperplastic primary vitreous | A unilateral congenital abnormality occurring in full-term infants; characterised by a retrolental fibrovascular membrane formed by persistent primary vitreous with remnants of the hyaloid artery and tunica vasculosa lentis; associated with leukokoria, microphthalmos, shallow anterior chamber, and elongated ciliary processes. (05 Mar 2000) |
|---|---|
| persistent atrioventricular canal | A condition that is caused when the atrial and ventricular septa fail to meet, as in normal development, resulting in a low atrial and high ventricular septal defect or a common atrioventricular canal. Synonym: endocardial cushion defect. (05 Mar 2000) |
| persistent chronic hepatitis | A benign chronic hepatitis that may follow acute viral hepatitis A or B, or complicate bowel diseases; after six months, liver biopsy changes are mild, unlike active chronic hepatitis; rarely, if ever, progresses to cirrhosis, portal hypertension, or liver failure. (05 Mar 2000) |
| persistent cloaca | A condition in which the urorectal fold has failed to divide the cloaca of the embryo into rectal and urogenital portions. Synonym: sinus urogenitalis, urogenital sinus. (05 Mar 2000) |
| persistent ectopic pregnancy | An ectopic pregnancy which has persistent viable tissue, secreting hCG after conservative surgery. (05 Mar 2000) |
| persistent foetal circulation syndrome | <syndrome> A syndrome of persistent pulmonary hypertension in the newborn infant, without demonstrable cardiac disease. It is characterised by cyanosis and acidosis, severe pulmonary vasoconstriction, hypertrophy of pulmonary arterial muscle, and elevated pulmonary vascular resistance, with resultant right-to-left shunting of blood through a patent ductus arteriosus and at times a patent foramen ovale. (12 Dec 1998) |
| persistent generalised lymphadenopathy | A syndrome characterised by reactive hyperplasia of lymph nodes (of at least one month's duration and at two different body sites, not including the inguinal area) in patients infected with the human immunodeficiency virus. The lymph node lesions progress from benign reactive hyperplasia through a stage of mixed follicular hyperplasia, to follicular involution with lymphocyte depletion. Many go on to a malignant non-Hodgkin's lymphoma. (05 Mar 2000) |
| persistent mullerian duct syndrome | <syndrome> Familial disorder with presence of fallopian tube, uterus, and testis in a male. Deficient mullerian inhibitory substance secondary to Sertoli cell defect. Synonym: hernia uteri inguinale. (05 Mar 2000) |
| persistent posterior hyperplastic primary vitreous | A unilateral congenital anomaly in full-term infants; associated with a congenital retinal fold and a vitreous membranous stalk containing remnants of the hyaloid artery. (05 Mar 2000) |
| persistent tremor | A tremor that is constant, whether the subject is at rest or moving. Synonym: continuous tremor. (05 Mar 2000) |
| persistent truncus arteriosus | A congenital cardiovascular deformity resulting from failure of development of the spiral septum and consisting of a common arterial trunk opening out of both ventricles, the pulmonary arteries being given off from the ascending common trunk. (05 Mar 2000) |
| persistent vegetative state | A persistent loss of upper cortical function that may follow acute (e.g., infections, toxins, trauma or vascular) events or chronic (e.g., degenerative) events. The patient is bedridden and nutritional support is completely passive, either parenteral or via nasogastric tube. The patient does not require respiratory support or circulatory assistance for survival and is in a state of chronic wakefulness without awareness which may be accompanied by spontaneous eye opening, grunts or screams, brief smiles, sporadic movement of facial muscles and limbs. While the eyes blink upon stimulation, they do not do so in response to visual threats. Some patients chew or clamp their teeth. Urinary and faecal incontinence is universal. (12 Dec 1998) |
| chronic persistent hepatitis | <pathology> A form of hepatitis usually caused by hepatitis C or B, that consists of mild persistent liver inflammation. Often a mild elevation of the liver enzymes will be seen on liver profile or SMAC 25 assay. Liver biopsy indicates persistent hepatitis. Incidence: 1 in 1,000. (02 Jan 1998) |
| truncus arteriosus, persistent | A congenital anomaly resulting from the failure of the aorticopulmonary system to develop and divide the truncus arteriosus into the aorta and the pulmonary trunk. (12 Dec 1998) |
| vena anastomotica superior | <anatomy, vein> A large communicating vein between the superficial middle cerebral vein and the superior sagittal sinus; it passes upward from the lateral sulcus, often following the line of the central sulcus (Rolando's fissure). Synonym: vena anastomotica superior, Trolard's vein. (05 Mar 2000) |