[ S ]

• sP  senile parkinsonism; structural protein
• sp  space; species; specific; spine, spinal; spirit
• SPA  salt-poor albumin; scalable [computer] processor architecture; sheep pulmonary adenomatosis; single photon absorptiometry; spastic ataxia; sperm penetration assay; spinal progressive amyotrophy; spondyloarthropathy; spontaneous platelet aggregation; staphylococcal protein A; student progress assessment; suprapubic aspiration; surface polypeptide, anonymous
• SP-A  surfactant protein A
• SPA-Acad  Acadian spastic ataxia
• SPACE  single potential analysis of cavernous electrical activity
• SPACELINE  Space Life Science Online
• sp act  specific activity
• SPACTO  Stent vs Percutaneous Angioplasty in Chronic Total Occlusion [trial]
• SPAD  stenosing peripheral arterial disease
• SPAF  spontaneous paroxysmal atrial fibrillation; Stroke Prevention in Atrial Fibrillation [trial]
• SPAF TEE  Stroke Prevention in Atrial Fibrillation-Transesophageal Echo [study]
• SPAG  small particle aerosol generator
• SPAI  steroid protein activity index
• SPAM  scanning photoacoustic microscopy
• SPAMM  spatial modulation of magnetization
• sp an  spinal anesthesia
• sPAP  systolic pulmonary artery pressure
• SPAR  sensitivity prediction by acoustic reflex
• SPARC  cysteine-rich acidic secreted protein; Space Physics and Aeronomy Research Collaboratory; Stroke Prevention Assessment of Risk and Community [trial]
• SPARS  spatially resolved spectrometry
• SPAT  slow paroxysmal atrial tachycardia; spatial concept [UMLS]
• SPB  sinking pre-beta-lipoprotein
• SP-B  surfactant protein B
• SPBI  serum protein-bound iodine
• SPBMD  spinal bone mineral density
• SPC  salicylamide, phenacetin, and caffeine; scaphopisocapitate; seropositive carrier; single palmar crease; single photoelectron count; soy phosphatidylcholine; spleen cell; standard plate count; statistical process control; summary of [pharmaceutical] product characteristics; synthetizing protein complex
• SP-C  surfactant protein C
• SPCA  serum prothrombin conversion accelerator; Society for Prevention of Cruelty to Animals; systemic pulmonary collateral artery
• SPCC  Spill Prevention, Control, and Countermeasure [plan]
• SPCD  syndrome of primary ciliary dyskinesia
• Sp Cd, sp cd  spinal cord
• SPCG  spectral phonocardiography
• SPD  schizotypal personality disorder; sociopathic personality disorder; specific paroxysmal discharge; spermidine; standard peak dilution; sterile processing department; storage pool deficiency
• SPDC  strio-pallido-dentate calcinosis
• SPDT  single pole double throw
• SpDur  spike duration
• SPE  septic pulmonary edema; serum protein electrolytes; serum protein electrophoresis; streptococcal pyrogenic exotoxin; sucrose polyester; sustained physical exercise
• SPEA  strength Pareto evolutionary approach algorithm
• SPEAK  spectral peak [strategy]
• SPEAR  selective parenteral and enteral anti-sepsis regimen
• SPE-C  streptococcal pyrogenic exotoxin C
• Spec  specialist, specialty; specificity
• spec  special; specific; specificity; specimen
• spec gr  specific gravity
• SPECT  single photon emission computed tomography
• SPEED  Strategies for Patency Enhancement in the Emergency Department [study]
• sPEEP  spontaneous peak end-expiratory pressure
• SPEG  serum protein electrophoretogram
• SPEL  syndactyly-polydactyly-earlobe [syndrome]
• SPEM  smooth pursuit eye movement
• SPEP  serum protein electrophoresis; Structured Patient Education Programme
• SPERM  spastic paraplegia-epilepsy-mental retardation [syndrome]
• SPET  single photon emission tomography; Surgical Procedure Entry Tool
• SPF  skin protection factor; specific pathogen--free; spectrophotofluorometer; S-phase fraction; split products of fibrin; standard perfusion fluid; Stuart-Prower factor; sun protection factor; systemic pulmonary fistula
• Sp Fl, sp fl  spinal fluid
• SPG  serine phosphoglyceride; spastic paraplegia; sphenopalatine ganglion; splenoportography; sucrose, phosphate, and glutamate; symmetrical peripheral gangrene
• SpG  specific gravity
• spg  sponge
• SPGA  Bovarnik solution; sucrose, phosphate, glutamate, and albumin
• SPGR  spoiled gradient [echo]
• SpGr, sp gr  specific gravity
• SPGX  spastic paraplegia, X-linked
• SPGY  spermatogenesis on Y
• SPH  secondary pulmonary hemosiderosis; severely and profoundly handicapped; spherocyte; spherocytosis; sphingomyelin
• Sph  sphenoidale; sphingomyelin
• sph  spherical; spherical lens; spheroid
• SPHS  Saskatoon Pregnancy and Health Study
• sp ht  specific heat
• SPI  selective protein index; Self-Perception Inventory; serum-precipitable iodine; serum protein index; Shipley Personal Inventory; speech processor interface; standardized-patient instructor; standards for pediatric immunization; structured pain interview; Study of Perioperative Ischemia; subclinical papillomavirus infection
• SPI 1, 2  Salmonella pathogenicity island 1, 2
• SPIA  solid-phase immunoabsorption; solid-phase immunoassay
• SPICE  Simulation Program with Integrated Circuit Emphasis; Study of Patients Intolerant to Converting Enzyme Inhibitors
• SPICED TEAS  Study of Pacemakers and Implantable Cardioverter Defibrillator Triggering by Electronic Article Surveillance Devices
• SPICU  surgical pulmonary intensive care unit
• SPID  summed pain intensity difference
• SPIDERS  Secondary Prevention of Ischemic Disease by Estrogen Replacement or Statins
• SPIE  International Society for Optical Engineering
• SPIF  solid-phase immunoassay fluorescence
• SPIH  superimposed pregnancy-induced hypertension
• SPIHT  set partitioning in hierarchical tree
• SPIN  skeletal plan instantiation; Social Phobia Inventory
• spin  spine, spinal
• SPINAF  Stroke Prevention in Nonrheumatic Atrial Fibrillation [study]
• SPIO  superparamagnetic iron oxide
• SPIR  Study of Perioperative Ischemia Research
• spir  spiral; spirit
• SPIRIT  Salvage from Perindopril in Reperfused Infarction Trial; Stroke Prevention in Reversible Ischemia Trial
• SPJ  saphenopopliteal junction
• SPK  serum pyruvate kinase; simultaneous pancreas-kidney [transplantation]; superficial punctate keratitis
• SPL  skin potential level; sound pressure level; splanchnic; spontaneous lesion; staphylococcal phage lysate; superior parietal lobule; surfactant proteolipid
• SPLATT  split anterior tibial tendon
• sPLM  sleep-related periodic leg movements
• SPLV  serum parvovirus-like virus
• SPlw  long window spectrogram
• SPM  scanning probe microscopy; shocks per minute; spatiotemporal population map; spermine; statistical parametric mapping; subhuman primate model; suspended particulate matter; synaptic plasma membrane
• SpM  spiriformis medialis [nucleus]
• spm  spermatogonial metaphase
• SPMA  spinal progressive muscular atrophy
• SPMD  single program multiple data
• SPMMV  Sweet potato mild mottle virus
• SPMR  standard proportionate mortality ratio (or rate)
• SPMS  secondary progressive multiple sclerosis
• SPMSQ  Short Portable Mental Status Questionnaire
• SPmv  medium window spectrogram
• S-PMVT  sustained polymorphic ventricular fibrillation
• SPN  senior plan network; sialophorin; solitary pulmonary nodule; supplemental parenteral nutrition; sympathetic preganglionic neuron
• SpnCbT  spinocerebellar tract
• SpO₂  functional oxygen saturation; pulse oximetry
• SPOCS  Surgical Planning and Organization Computer System
• SPOD  spouse's perception of disease
• spon, spont  spontaneous
• SPONASTRIME  spondylar and nasal alterations with striated metaphyses; spondylar changes-nasal anomaly-associated metaphyses [dysplasia]
• SPOOL  simultaneous peripheral operation on-line
• SPOP  sequential paired opposed plaque [technique]
• SPORE  Specialized Programs of Research Excellence [study]
• SPORT  Stent Implantation Postrotational Atherectomy Trial
• SPOV  Spondweni virus
• SPP  plural of species; Sexuality Preference Profile; skin perfusion pressure; small plaque parapsoriasis; suprapubic prostatectomy
• spp  plural of species
• SPPF  standard portable patient file
• SPPK  striate palmoplantar keratoderma
• Sp Pn, Sp Pnx  spontaneous pneumothorax
• SPPP, sppp  plural of subspecies
• SPPS  single photon planar scintigraphy; solid phase peptide synthesis; stable plasma protein solution
• SPPT  superprecipitation response
• SPPX  X-linked spastic paraplegia
• SPR  scanned projection radiography; selected primer; sepiapterin reductase; serial probe recognition; skin potential response; specific pathogen free; Society for Pediatric Radiology; Society for Pediatric Research; solid phase radioimmunoassay; substance P receptor; superior peroneal retinaculum
• Spr  scan projection radiography
• spr  sprain
• SPRAS  Sheehan patient rated anxiety scale
• SPRCA  solid phase red cell adherence assay
• SPRIA  solid phase radioimmunoassay
• SPRINT  Secondary Prevention of Reinfarction Israeli Nifedipine Trial
• SPROM  spontaneous premature rupture of membrane
• SPRR  small proline-rich protein
• SPRRA  small proline-rich protein A
• SPRRB  small proline-rich protein B
• SPRRC  small proline-rich protein C
• SPRS  Sixty Plus Reinfarction Study
• SPRT  sequential probability ratio test; Sixty Plus Reinfarction Trial
• SPS  scapuloperoneal syndrome; shoulder pain and stiffness; simple partial seizures; slow-progressive schizophrenia; Society of Pelvic Surgeons; sodium polyanethol sulfonate; sodium polystyrene; sound production sample; spermidine synthase; stimulated protein synthesis; Stockholm Prospective Study; Suicide Probability Scale; systemic progressive sclerosis
• SpS  sphenoid sinus
• sPSGL, (s)PSGL  soluble P-selectin glycoprotein ligand
• spSHR  stroke-prone spontaneously hypertensive rat
• SPSS  Statistical Package for the Social Sciences [Australia]
• SPST  Symonds Picture-Story Test
• SPsw  short window spectrogram
• SPT  second primary tumor; secretin-pancreazymin [test]; single patch technique; single patient trial; sleep period time; spectrin; standard psychometric test; station pull-through [technique]
• SpT  spinal tap
• SPTA  spatial peak temporal average; spectrin alpha
• SPTAN  spectrin alpha, nonerythroid
• Sp tap  spinal tap
• SPTI  systolic pressure time index
• SPTS  subjective posttraumatic syndrome
• SPTx  static pelvic traction
• SPU  short procedure unit; Society of Pediatric Urology; standardized photometric unit
• SPV  selective proximal vagotomy; Shope papillomavirus; sulfophosphovanillin; systolic pressure variation
• SPW  subxiphoid pericardial window
• SPWVD  smooth pseudo-Winger-Ville distribution [heart rate signal]
• SPYWS  Stroke Prevention in Young Women Study
• SPZ  sulfinpyrazone
• SQ  social quotient; status quo; subcutaneous [JCAHO unapproved abbreviation]; survey question; symptom questionnaire
• Sq  subcutaneous
• sq  square; squamous
• SQC  statistical quality control
• sq cell ca  squamous cell carcinoma
• SQI  signal quality index
• SQL  standard query language; structured query language
• SQP  sequential quadratic programming
• S-QRS  stimulus to QRS interval [ECG]
• sq rt  square root
• SQUID  superconducting quantum interference device
• SR  sample response; sarcoplasmic reticulum; saturation recovery; scanning radiometer; screen; secretion rate; sedimentation rate; seizure resistant; selection relaxation [algorithm]; self-recording; senior resident; sensitivity response; sensitization response; service record; sex ratio; shorthair [guinea pig]; short range; side rails; sigma reaction; silicone rubber; sinus rhythm; skin resistance; sleep and rest; slow release; smooth-rough [colony]; sparse representation; spatial resolution [imaging]; specific release; specific [airway] resistance; specific response; splenorenal; spontaneous respiration; steroid resistance; stimulus-response; stomach rumble; stress related; stress relaxation; stretch reflex; sulfonamide-resistant; superior rectus; surface rendering [visualization]; surface roughness; sustained release; suture removal; synchronization ratio; systemic reaction; systemic resistance; systems research; systems review
• S-R  smooth-rough [bacteria]; stimulus-response
• Sr  strontium
• sr  steradian
• SRA  segmental renal artery; serum renin activity; spleen repopulating activity
• SRAM  static random access memory
• SR_AW, SR_aw  specific airway resistance
• SRB  sulforhodamine B
• SRBC  sheep red blood cells
• SRBD  sleep-related breathing disorder
• SRBSDS  short range biological standoff detection system
• SRC  sedimented red cells; sheep red cells; signed reaction center; steroid receptor
• src  Rous sarcoma oncogene
• SRCA  specific red cell adherence
• SRCBC  serum reserve cholesterol binding capacity
• SR/CP  schizophrenic reaction, chronic paranoid
• SRD  service-related disability; Society for the Relief of Distress; Society for the Right to Die; sodium-restricted diet; specific reading disability; sustained rate duration
• SRDS  severe respiratory distress syndrome
• SRDT  single radial diffusion test
• SRE  Schedule of Recent Experiences; standard regression effect; sterol regulatory element
• SREBP  sterol regulatory element binding protein
• sREM  stage rapid eye movement
• SRF  semirigid fiberglass cast; serum responsive factor; service response force; severe renal failure; skin reactive factor; somatotropin-releasing factor; split renal function; subretinal fluid
• SRFA  selective restriction fragment amplification
• SRF-A  slow-reacting factor-anaphylaxis
• SRFS  split renal function study
• SRG  specialty review group

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