| PAR | participating provider; passive avoidance reaction; perennial allergic rhinitis; photosynthetically ... |
|---|---|
| PAS | para aminosalicylate; Parent Attitude Scale; patient administration system; patient appointments and... |
| PAV | percutaneous aortic valvuloplasty; poikiloderma atrophicans vasculare; posterior arch vein; proporti... |
| PBW | posterior bite wing |
| PCD | pacer-cardioverter-defibrillator; papillary collecting duct; paraneoplastic cerebellar degeneration;... |
| vena septi pellucidi anterior | Vein draining the anterior part of the transparent septum; it empties into the superior thalamostriate vein. Synonym: vena septi pellucidi anterior. (05 Mar 2000) |
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| vena spiralis modioli | The vein running a spiral course in the modiolus of the cochlea; it is tributary to both the labyrinthine vein and the vein of the cochlear canaliculus. Synonym: vena spiralis modioli. (05 Mar 2000) |
| vena splenica | <anatomy, vein> Vein formed by the union (at the hilus of the spleen) of several small veins from the stomach, pancreas, spleen and mesentery. (12 Dec 1998) |
| vena sternocleidomastoidea | <anatomy, vein> It arises in the sternocleidomastoid muscle and accompanies the sternocleidomastoid branch of the occipital artery; it drains into the internal jugular or superior thyroid vein. Synonym: vena sternocleidomastoidea. (05 Mar 2000) |
| vena stylomastoidea | <anatomy, vein> It drains the tympanic cavity, traverses the facial canal exiting via the stylomastoid foramen, and empties into the retromandibular vein. Synonym: vena stylomastoidea. (05 Mar 2000) |
| vena subclavia | <anatomy, vein> The continuation of the axillary vein which follows the subclavian artery and then joins the internal jugular vein to form the brachiocephalic vein. (12 Dec 1998) |
| vena sublingualis | <anatomy, vein> Vein which accompanies the sublingual artery in the floor of the mouth, lateral to the hypoglossal nerve; it may join the deep lingual vein to form the lingual vein, or join the vena comitans nerve hypoglossi. Synonym: vena sublingualis. (05 Mar 2000) |
| vena submentalis | <anatomy, vein> A vein situated below the chin, anastomosing with the sublingual vein, connecting with the anterior jugular vein, and emptying into the facial vein. Synonym: vena submentalis. (05 Mar 2000) |
| vena supraorbitalis | <anatomy, vein> Drains the front of the scalp and unites with the supratrochlear veins to form the angular vein. Synonym: vena supraorbitalis. (05 Mar 2000) |
| vena suprarenalis dextra | <anatomy, vein> The short vein that passes from the hilum of the right suprarenal to the inferior vena cava. Synonym: vena suprarenalis dextra. (05 Mar 2000) |
| vena suprarenalis sinistra | <anatomy, vein> The vein from the hilum of the left suprarenal gland that passes downward to open into the left renal vein; it usually is joined by the left inferior phrenic vein. Synonym: vena suprarenalis sinistra. (05 Mar 2000) |
| vena suprascapularis | <anatomy, vein> Vein that accompanies the suprascapular artery and empties into the external jugular vein. Synonym: vena suprascapularis, transverse vein of scapula, vena transversa scapulae. (05 Mar 2000) |
| vena-tech ivc filter | <radiology> Introduced as LGM (L.G. Medical, France), 1985; FDA aprroval 1991: Vena-Tech, Evanston, IL, 6-leg conical design with 6 stabilizing side bars, biocompatible metal known as Phynox (cobalt,chromium,iron,nickel,moly) Efficacy, recurrent PE: 2-6%, IVC occlusion: 8-24%, migration: 0-12% Advantages, ease of placement, excellent clot trapping efficiency, low profile, lacks ferromagnetic activity: minimal MRI artifacts Disadvantages, incomplete opening (6-19%): decreases clot-trapping efficiency, increased incidence from IJ approach, decreased with rapid deployment, increased IVC thrombosis rates: 8% initial reports; 22-24% on subsequent reports by ultrasound/MRI: 2-19% clinically symptomatic (12 Dec 1998) |
| vena temporalis media | <anatomy, vein> It arises near the lateral angle of the eye and joins the superficial temporal veins to form the retromandibular vein. Synonym: vena temporalis media. (05 Mar 2000) |
| vena terminalis | <anatomy, vein> A long vein passing forward in the groove between the thalamus and caudate nucleus, covered by the lamina affixa, receiving the transverse caudate veins along its lateral side, and joining at the caudal wall of Monro's foramen with the choroidal vein and vein of septum pellucidum to form the internal cerebral vein. Synonym: vena terminalis, vena thalamostriata superior, terminal vein, vein of corpus striatum. (05 Mar 2000) |