[ P ]

• P&R  pelvic and rectal [examination]; pulse and respiration
• Pr  in prone position; praseodymium; prednisolone; presbyopia; primary; prism; production, productivity; production rate [of steroid hormones]; prolactin; propyl
• pr  far point of accommodation [Lat. punctum remotum]; pair; per rectum; prism
• PRA  panel-reactive antibody; patient record architecture; percent reactive antibody; phosphoribosylamine; physician recognition award; plasma renin activity; progesterone receptor assay; proximal reference axis [imaging]
• prac, pract  practice, practitioner
• PRACTICAL  Placebo-Controlled Randomized ACE Inhibition Comparative Trial in Cardiac Infarction and Left Ventricular Function
• PRAGMATIC  pregnancy, rheumatoid arthritis, acromegaly, glucose metabolism disorders, mechanical injury, amyloid, thyroid disease, infectious disease, crystals in gout or pseudogout [disorders associated with carpal tunnel syndrome]
• PRAGUE  Primary Angioplasty After Transfer of Patients from General Community Hospitals to Catheterization Units with or without Emergency Thrombolytic Infusion [study]
• PrA-HPA  protein A hemolytic plaque assay
• PRAI  pattern recognition and artificial intelligence
• PRAISE  Prospective Randomized Amlodipine Survival Evaluation
• PRAMS  pregnancy risk assessment monitoring system
• PRANN  prediction recurrent artificial neural network
• PRAS  pre-reduced anaerobically sterilized [medium]; pseudo-renal artery syndrome
• PRB  basic proline-rich protein; Prosthetics Research Board
• pRB, pRb  retinoblastoma protein
• PRBC  packed red blood cells; placental residual blood volume
• pRB-P  phosphorylated form of retinoblastoma protein
• PRBS  pseudorandom binary sequence
• PRBV  placental residual blood volume
• PRC  packed red cells; peer review committee; phase response curve; plasma renin concentration; professional review committee
• PRCA  pure red cell aplasia
• pRCA  posterior right coronary artery
• PRCCT  prospective randomized controlled clinical trial
• PRCF  peak response coarse frequency
• PRCG  Polak-Ribiere conjugate gradient [algorithm]
• PRCoV  porcine respiratory coronavirus
• PRCV  porcine respiratory coronavirus
• PRD  partial reaction of degeneration; patient reference dosier; physician relations department; Pitt-Rogers-Danks [syndrome]; postradiation dysplasia
• PRDP  Provincial Resource Directory Project [Canada]
• PRDS  Pitt-Rogers-Danks syndrome
• PRE  photoreacting enzyme; physician's report of examination; pigmented retinal epithelium; preliminary evaluation; preplacement examination; progressive resistive exercise; prospective randomized evaluation; proton relaxation enhancement
• pre  preliminary; preparation or prepare; pretreatment
• pre-AIDS  pre-acquired immune deficiency syndrome
• pre-amp  preliminary amplifier
• PRECEDE  predisposing, reinforcing, and enabling causes in educational diagnosis and evaluation [model]
• precip  precipitate, precipitated, precipitation
• PRECISE  Prospective Randomized Evaluation of Carvedilol in Symptoms and Exercise [trial]
• PRED  prednisone
• PREDICT  Prospective Randomized Evaluation of Diltiazem CD Trial
• PREFACE  Pravastatin-Related Effects Following Angioplasty on Coronary Endothelium [study]
• prefd  preferred
• PREFER  patient randomization to either femoral or radial catheterization
• preg, pregn  pregnancy, pregnant
• prelim  preliminary
• prem  premature, prematurity
• PreMACE  prednisone, methotrexate, Adriamycin, cyclophosphamide, etoposide
• PREMIS  Prehospital Myocardial Infarction Study
• pre-mRNA  precursor messenger ribonucleic acid
• preop, pre-op  preoperative
• PREP  pattern reversal electrical potential; Physician Review and Enhancement Program
• prep, prepd  prepare, prepared
• Pres  resistive pressure
• PRESEP  Pediatric Rural Emergency System and Education Project
• preserv  preserve, preserved, preservation
• PRESERVE  Prospective Randomized Enalapril Study Evaluating Regression of Ventricular Enlargement
• PRESS  Percutaneous Retroperitoneal Spleno-renal Shunt [study]; point-resolved spectroscopy
• press  pressure
• PREV  Pretoria virus
• prev  prevention, preventive; previous
• PREVENT  Program in Ex Vivo Vein Graft Engineering via Transfection; Proliferation Reduction Using Vascular Energy Trial; Prospective Randomized Evaluation of the Vascular Effects of Norvasc Trial
• PREVMEDU  preventive medicine unit
• PREZ  posterior root entry zone
• PRF  partial reinforcement; patient report form; peak repetition frequency; perforin; plasma recognition factor; pontine reticular formation; postrepetition frequency [Doppler]; progressive renal failure; prolactin releasing factor; pulse repetition frequency
• pRF  polyclonal rheumatoid factor
• PRFF,TRFF  peak [through] response fine frequency
• PRFLE  Prospective Randomized Flosequinan Longevity Evaluation
• PRFM  premature rupture of fetal membranes
• PRG  phleborheography; purge
• PRGS  phosphoribosylglycineamide synthetase
• PRH  past relevant history; postrepetition frequency [Doppler]; prolactin releasing hormone
• PrH  propositus hypoglossi
• PRHCIT  The Project for Rural Health Communication and Information Technologies [Australia]
• PRHHP  Puerto Rico Heart Health Program
• PRI  Pain Rating Index; patient review instrument; phosphate reabsorption index; phosphoribose isomerase; placental ribonuclease inhibitor
• P-RIA  polyclonal radioimmunoassay
• PRIAS  Packard radioimmunoassay system
• PRICE  protection, relative rest, ice, compression, elevation
• PRICEMM  protection, relative rest, ice, compression, elevation, modalities, medication
• PRICES  protection, rest, ice, compression, elevation, support [primary treatment of tendinitis and overuse injury]; physician modalities, rehabilitation, injections, cross-training, evaluation, salicylates [secondary treatment of tendinitis and overuse injury]
• PRIDE  Parents Resource Institute for Drug Education; Platelet Aggregation and Receptor Occupancy with Integrilin-A Dynamic Evaluation [study]; Primary Implantable Defibrillator [study]
• PRIH  prolactin release-inhibiting hormone
• PRIM  primase
• PRIMA  Primary Care Information Across Anglia
• PRIME  preinversion multiecho; Prematriculation Program in Medical Education; Promotion of Reperfusion by Inhibition of Thrombin During Myocardial Infarction Evaluation [study]; Promotion of Reperfusion in Myocardial Infarction Evolution [study]; Prospective Randomized Ibopamine Mortality Evaluation [study]; Prospective Randomized Study of Ibopamine on Mortality and Efficacy in Heart Failure
• PRIME-MD  Primary Care Evaluation of Mental Disorders
• PRIMEROSE  probabilistic rule based on rough sets
• PRIMEX  primary care extender
• PRIMI  Prourokinase in Myocardial Infarction [trial]
• primip  primipara
• PRINCE  prevention of radiocontrast-induced nephropathy evaluation
• PRIND  prolonged reversible ischemic neurologic deficit
• PRINS  primed in situ [labeling]
• PRI(S)  pain rating intensity score
• PRISAM  Primary Stenting for Acute Myocardial Infarction [trial]
• PRISE  Primary Care Sharing the Evidence [UK]
• PRISM  pediatric risk of mortality; Platelet Receptor Inhibition in Ischemic Syndrome Management [study]
• PRISM-PLUS  Platelet Receptor Inhibition in Ischemic Syndrome Management in Patients Limited by Unstable Signs and Symptoms [study]
• PRISMS  Prevention of Relapses and Disability by Interferon Beta-1a Subcutaneously in Multiple Sclerosis [study]
• PRIST  paper radioimmunosorbent test
• PRISTINE  Praxilene in Stroke Treatment in Northern Europe [study]
• PRK  photorefractive keratectomy; primary rabbit kidney
• PRKAR  protein kinase, cyclic adenosine monophosphate-dependent, regulatory
• PRKAR1A  protein kinase, cyclic adenosine monophosphate-dependent, regulatory, type 1 alpha
• PRKC  protein kinase C
• PRKCA  protein kinase C alpha
• PRL, Prl  prolactin
• PRLR  prolactin receptor
• PRM  phosphoribomutase; photoreceptor membrane; premature rupture of membranes; Primary Reference Material; primidone; protamine
• PrM  preventive medicine
• PRMS  percent root mean square
• PRMSE  percent root mean square error
• PRN  pertactin; Physicians Research Network; polyradiculoneuropathy; prion; protectin
• p.r.n.  as needed [Lat. pro re nata]
• PRNP  prion protein
• PRNT  plaque reduction neutralization test
• PRO  peer review organization; physician review organization; Professional Review Organization; pronation; protein
• Pro  proline; prophylactic; prothrombin
• pro  protein
• PROACT  Prolyse in Acute Cerebral Thrombolysis Trial; Prourokinase in Acute Cerebral Thromboembolism [trial]; Prourokinase in Acute Thromboembolic Stroke [trial]
• ProACT  professionally advanced care team
• prob  probable
• PROBE  Prospective, Randomized, Open Blinded Endpoint Trial; Prospective, Randomized, Open Trial with Blinded Endpoint Evaluation
• PROC  protein C
• proc  proceedings, procedure; process
• PROCAM  Prospective Cardiovascular Münster Study
• PROC GLM  general linear model procedure
• proct, procto  proctology, proctologist; proctoscopy
• prod  production, product
• PROFET  Prevention of Falls in the Elderly Trial
• prog  progress, progressive
• progn  prognosis
• PROGRESS  Perindopril Protection Against Recurrent Stroke Study
• proGRP  pro-gastrin-releasing peptide
• PROH  propyl-4-hydrolase
• PROHB  propyl-4-hydrolase, beta
• PROLOG  Precursor to EPILOG [study]; programming in logic
• prolong  prolongation, prolonged
• PROM  passive range of motion; premature rupture of fetal membranes; prolonged rupture of fetal membranes; programmable read only memory; prosthetic range of motion
• PROMIS  Problem-Oriented Medical Information System
• PROMISE  Prospective Randomized Milrinone Survival Evaluation [study]
• PROMPTOR-FM  probabilistic method of prompting for test ordering in family medicine
• pron  pronator, pronation
• PROP  propranolol
• ProPAC  Prospective Payment Assessment Commission
• PRO-PBP  pro-platelet basic protein
• proph  prophylactic, prophylaxis
• ProPO  prophenoloxidase
• ProRS  propyl transfer ribonucleic acid synthase [RNAse]
• PROS  Pediatric Research in Office Settings [network]; protein S
• pros  prostate, prostatic
• PROSIT  proteinuria screening and intervention
• PROSP  protein S pseudogene
• PROSPECT  Proscar Safety Plus Efficacy Canadian Two-Year Study
• PROSPER  Prospective Study of Pravastatin in the Elderly at Risk
• PROST  pronuclear stage transfer
• PROSTATE  Physicians for Rational Ordering and Screening Tests and Therapeutic Effectiveness
• prosth  prosthesis, prosthetic
• PROTECT  Perindopril Regression of Vascular Thickening European Community Trial; Prospective Reinfarction in the Thrombolytic Era: Cardizem-CD Trial
• PROTO  protoporphyrin; protoporphyrinogen
• pro-u-PA  proenzyme urokinase plasminogen activator
• prov  provisional
• PROVED  Prospective Randomized Study of Ventricular Failure and the Efficacy of Digoxin
• PROW  Protein Review on the Web
• prox  proximal
• PRP  photolyase regulatory protein; physiologic rest position; pityriasis rubra pilaris; platelet-rich plasma; polyribosyl ribitol phosphate; postural rest position; pressure rate product; primary Raynaud phenomenon; progressive rubella panencephalitis; proliferative retinopathy photocoagulation; proline-rich protein; Psychotic Reaction Profile; pulse repetition period
• PrP, Prp  prion protein
• PRPH  peripherin
• PRPP  phosphoribosylpyrophosphate
• PRPS  prostatic secretory protein
• PRP,TRP  peak [through] response phase
• PRQ  personal resources questionnaire
• PRR  pattern recognition receptor; proton relaxation rate; pulse repetition rate
• PrR  progesterone receptor
• PRRB  Provider Reimbursement Review Board
• PRRE  pupils round, regular, and equal
• PRRF  paramedian pontine reticular formation
• PR-RSV  Prague Rous sarcoma virus
• PRS  Personality Rating Scale; Pierre Robin syndrome; plasma renin substrate; Prieto syndrome; proctorectosigmoidoscopy
• PRSIS  Prospective Rate Setting Information System
• PRT  patient record tree; Penicillium roqueforti toxin; pharmaceutical research and testing; phosphoribosyl transferase; pivot repeatability test; postoperative respiratory therapy; prospective randomized trial
• PrT  protein truncation [test]
• PRTD  proximal renal tubular dysfunction
• PRTH  pituitary resistance to thyroid hormone
• PRTH-C  prothrombin time control
• PRTN  proteinase
• PRTS  Partington syndrome
• PRU  peripheral resistance unit
• PRUJ  proximal radioulnar joint
• PRV  Paroo River virus; planning organ at risk volume [imaging]; polycythemia rubra vera; pseudorabies virus; posterior right ventricle; python orthoreovirus
• PRVC  pressure-regulated volume control [respiration]
• PRVEP  pattern reversal visual evoked potential
• PRW  polymerized ragweed
• PRX  pseudoexfoliation
• Prx  prognosis
• prx  proximal
• PRZF  pyrazofurin
• PS  pacemaker syndrome; pain stimulation; paired stimulation; pancreozymin secretin; paradoxical sleep; paralaryngeal space; paranoid schizophrenia; paraspinal; parasympathetic; Parkinson syndrome; parotid sialography; partial saturation; partial seizure; pathological stage; patient's serum; pediatric site [database, Italy]; pediatric surgery; performing scale [intelligence quotient, IQ]; performance status; periodic syndrome; pferdestärke (German for horsepower); phosphate saline [buffer]; phosphatidyl serine; photosensitivity, photosensitization; photosynthesis; phrenic stimulation; physical status; physiologic saline; phytosterol; pixel size; plastic surgery; polysaccharide; polystyrene; population sample; population spike; Porter-Silber [chromogen]; postcardiotomy shock; posterior synechiae or synechiotomy; posteroseptal; postmaturity syndrome; prescription; precursor state; presenilin; presenting symptom; pressure sore; pressure support; prestimulus; procedural sedation; programmed symbol; prostatic secretion; protamine sulfate; proteasome; protein S; protein synthesis; Proteus syndrome; P selectin; psychiatric; pulmonary sequestration; pulmonary stenosis; pulse sequence; pyloric stenosis
• P&S  paracentesis and suction
• P/S  polisher-stimulator; polyunsaturated/ saturated [fatty acid ratio]

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