Internal Medicine Abbreviations

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Internal Medicine Alphabet – S

S. No	Abbreviation	Full Form	Short Explanation	Practical Example
S001	SLE	Systemic Lupus Erythematosus	Autoimmune disease affecting multiple organs	Rash, arthritis, nephritis
S002	SAH	Subarachnoid Hemorrhage	Bleeding into the subarachnoid space	Aneurysmal rupture
S003	SBP	Systolic Blood Pressure / Spontaneous Bacterial Peritonitis	Blood pressure / liver infection	Hypertension / cirrhosis complication
S004	SBRT	Stereotactic Body Radiotherapy	Targeted radiation therapy	Lung tumor treatment
S005	SCD	Sickle Cell Disease	Hemoglobinopathy causing sickling of RBCs	Vaso-occlusive crises
S006	SCFE	Slipped Capital Femoral Epiphysis	Pediatric hip disorder	Adolescent hip pain
S007	SCr	Serum Creatinine	Kidney function marker	Renal function assessment
S008	SDH	Subdural Hematoma	Bleeding under dura mater	Head trauma complication
S009	SIRS	Systemic Inflammatory Response Syndrome	Body-wide inflammation	Sepsis evaluation
S010	SIADH	Syndrome of Inappropriate Antidiuretic Hormone	Hyponatremia due to excess ADH	Lung cancer complication
S011	SMA	Superior Mesenteric Artery	Abdominal artery	Mesenteric ischemia
S012	SMBG	Self-Monitoring of Blood Glucose	Patient glucose monitoring	Diabetes management
S013	SMR	Standardized Mortality Ratio	Mortality statistic	Epidemiologic studies
S014	SNA	Sympathetic Nervous Activity	Autonomic nervous system measure	HRV analysis
S015	SOB	Shortness of Breath	Dyspnea symptom	COPD exacerbation
S016	SPB	Spontaneous Pneumothorax	Lung collapse	Chest pain & dyspnea
S017	SpO2	Peripheral Capillary Oxygen Saturation	Oxygen saturation measurement	Pulse oximetry
S018	SPECT	Single Photon Emission Computed Tomography	Nuclear imaging	Cardiac perfusion scan
S019	SLEDAI	Systemic Lupus Erythematosus Disease Activity Index	Disease severity scoring	Monitoring lupus activity
S020	SNRI	Serotonin-Norepinephrine Reuptake Inhibitor	Antidepressant class	Venlafaxine use
S021	SSI	Surgical Site Infection	Postoperative infection	Wound infection management
S022	SVC	Superior Vena Cava	Large thoracic vein	SVC syndrome
S023	SVT	Supraventricular Tachycardia	Fast heart rhythm	Palpitations treatment
S024	SVR	Systemic Vascular Resistance	Blood vessel resistance	Hypertension assessment
S025	SWI	Susceptibility Weighted Imaging	MRI technique	Brain hemorrhage detection
S026	Sx	Symptom / Surgery	Clinical shorthand	Cough / appendectomy
S027	SA	Sinoatrial Node	Heart’s pacemaker	ECG analysis
S028	SAB	Subarachnoid Block	Spinal anesthesia	Surgery anesthesia method
S029	SAD	Seasonal Affective Disorder	Depression in winter months	Light therapy treatment
S030	SBP	Systolic Blood Pressure	Top number in BP	Hypertension monitoring
S031	SC	Subcutaneous	Injection route	Insulin administration
S032	SD	Standard Deviation	Statistical measure	Lab data analysis
S033	SE	Status Epilepticus	Prolonged seizure	Emergency treatment
S034	SFA	Superficial Femoral Artery	Leg artery	Peripheral vascular disease
S035	SGOT	Serum Glutamic Oxaloacetic Transaminase	Liver enzyme	Hepatitis evaluation
S036	SGPT	Serum Glutamic Pyruvic Transaminase	Liver enzyme	Liver function test
S037	SH	Subarachnoid Hemorrhage	Brain bleeding	Aneurysm rupture
S038	SI	Sensitivity Index / Suicidal Ideation	Diagnostic measure / mental health	Lab test / patient assessment
S039	SID	Sudden Infant Death	Infant mortality	Pediatrics study
S040	SIG	Special Interest Group	Professional organization	Medical conference
S041	SIRS	Systemic Inflammatory Response Syndrome	Body-wide inflammation	Sepsis detection
S042	SLE	Systemic Lupus Erythematosus	Autoimmune disease	Rash, arthritis, nephritis
S043	SLN	Sentinel Lymph Node	First draining lymph node	Cancer staging
S044	SMA	Superior Mesenteric Artery	Abdominal artery	Mesenteric ischemia
S045	SMV	Superior Mesenteric Vein	Vein draining intestines	Thrombosis assessment
S046	SOB	Shortness of Breath	Dyspnea	COPD or heart failure
S047	SP	Systolic Pressure	Blood pressure measurement	Hypertension monitoring
S048	SpO₂	Peripheral Oxygen Saturation	Oxygen measurement	Pulse oximeter reading
S049	SPS	Stiff Person Syndrome	Neurologic disorder	Muscle rigidity
S050	SPT	Skin Prick Test	Allergy testing	IgE mediated reaction
S051	SR	Sinus Rhythm	Normal heart rhythm	ECG reading
S052	SRA	Serotonin Releasing Agent	Drug class	MDMA pharmacology
S053	SRS	Stereotactic Radiosurgery	Targeted radiation	Brain tumor treatment
S054	SSS	Sick Sinus Syndrome	Heart conduction disorder	Bradyarrhythmia management
S055	ST	Sinus Tachycardia / Segment	Heart rhythm / ECG segment	Palpitations / MI assessment
S056	ST Elevation	ST Segment Elevation	ECG MI marker	STEMI diagnosis
S057	ST Depression	ST Segment Depression	ECG ischemia marker	NSTEMI evaluation
S058	STEMI	ST-Elevation Myocardial Infarction	Heart attack	ECG & troponin confirmation
S059	STS	Society of Thoracic Surgeons	Surgical society	Cardiac surgery guideline
S060	SV	Stroke Volume	Blood pumped per beat	Echocardiography assessment
S061	SVA	Supraventricular Arrhythmia	Fast heart rhythm	AF or flutter
S062	SVR	Systemic Vascular Resistance	Vascular tone measurement	BP assessment
S063	SVT	Supraventricular Tachycardia	Rapid heart rate	Palpitations treatment
S064	SWI	Susceptibility Weighted Imaging	MRI brain imaging	Hemorrhage detection
S065	Sx	Symptom / Surgery	Clinical shorthand	Cough / appendectomy
S066	SA	Sinoatrial Node	Heart pacemaker	ECG analysis
S067	SAB	Subarachnoid Block	Spinal anesthesia	Surgery
S068	SAD	Seasonal Affective Disorder	Depression in winter	Light therapy
S069	SC	Subcutaneous	Injection route	Insulin
S070	SD	Standard Deviation	Statistical measure	Lab data analysis
S071	SE	Status Epilepticus	Prolonged seizure	Emergency treatment
S072	SFA	Superficial Femoral Artery	Leg artery	PVD evaluation
S073	SGOT	Serum Glutamic Oxaloacetic Transaminase	Liver enzyme	Hepatitis
S074	SGPT	Serum Glutamic Pyruvic Transaminase	Liver enzyme	LFT
S075	SH	Subarachnoid Hemorrhage	Brain bleeding	Aneurysm rupture
S076	SI	Sensitivity Index / Suicidal Ideation	Diagnostic / mental health	Lab test / assessment
S077	SID	Sudden Infant Death	Infant mortality	Pediatrics
S078	SIG	Special Interest Group	Professional body	Medical conference
S079	SLN	Sentinel Lymph Node	First draining lymph node	Cancer staging
S080	SMV	Superior Mesenteric Vein	Vein draining intestines	Thrombosis assessment

S. No	Abbreviation	Full Form	Short Explanation	Practical Example
S081	SNHL	Sensorineural Hearing Loss	Hearing loss due to inner ear or nerve	Presbycusis diagnosis
S082	SOFA	Sequential Organ Failure Assessment	ICU organ dysfunction score	Sepsis evaluation
S083	SPC	Sympathetic-Parasympathetic Coupling	Autonomic function	Heart rate variability
S084	SPG	Sympathetic Preganglionic	Nervous system component	Neuroanatomy study
S085	SPIN	Systolic Pressure Index Number	Cardiac measure	Hypertension monitoring
S086	SPL	Spleen	Lymphoid organ	Splenomegaly assessment
S087	SPM	Suspended Particulate Matter	Airborne particle	Occupational health
S088	SPN	Solitary Pulmonary Nodule	Lung lesion	Chest CT finding
S089	SPP	Skin Perfusion Pressure	Circulation measurement	Peripheral vascular assessment
S090	SPT	Skin Prick Test	Allergy assessment	IgE-mediated reaction
S091	SR	Sinus Rhythm	Normal heart rhythm	ECG reading
S092	SRA	Serotonin Releasing Agent	Drug classification	MDMA pharmacology
S093	SRS	Stereotactic Radiosurgery	Targeted radiation therapy	Brain tumor treatment
S094	SSS	Sick Sinus Syndrome	Heart conduction disorder	Bradyarrhythmia management
S095	ST	Sinus Tachycardia / Segment	Heart rhythm / ECG segment	Palpitations / MI evaluation
S096	ST Elevation	ST Segment Elevation	ECG MI marker	STEMI diagnosis
S097	ST Depression	ST Segment Depression	ECG ischemia marker	NSTEMI evaluation
S098	STEMI	ST-Elevation Myocardial Infarction	Heart attack	ECG & troponin confirmation
S099	STS	Society of Thoracic Surgeons	Surgical society	Cardiac surgery guideline
S100	SV	Stroke Volume	Blood pumped per heartbeat	Echocardiography assessment
S101	SVA	Supraventricular Arrhythmia	Rapid heart rhythm	AF or flutter
S102	SVR	Systemic Vascular Resistance	Vascular tone	Blood pressure assessment
S103	SVT	Supraventricular Tachycardia	Rapid heart rate	Palpitations treatment
S104	SWI	Susceptibility Weighted Imaging	MRI technique	Brain hemorrhage detection
S105	Sx	Symptom / Surgery	Clinical shorthand	Cough / appendectomy
S106	SA	Sinoatrial Node	Heart pacemaker	ECG analysis
S107	SAB	Subarachnoid Block	Spinal anesthesia	Surgery anesthesia
S108	SAD	Seasonal Affective Disorder	Depression in winter	Light therapy treatment
S109	SC	Subcutaneous	Injection route	Insulin administration
S110	SD	Standard Deviation	Statistical measure	Lab data analysis
S111	SE	Status Epilepticus	Prolonged seizure	Emergency treatment
S112	SFA	Superficial Femoral Artery	Leg artery	Peripheral vascular disease
S113	SGOT	Serum Glutamic Oxaloacetic Transaminase	Liver enzyme	Hepatitis evaluation
S114	SGPT	Serum Glutamic Pyruvic Transaminase	Liver enzyme	Liver function test
S115	SH	Subarachnoid Hemorrhage	Brain bleeding	Aneurysm rupture
S116	SI	Sensitivity Index / Suicidal Ideation	Diagnostic / mental health	Lab test / patient evaluation
S117	SID	Sudden Infant Death	Infant mortality	Pediatrics study
S118	SIG	Special Interest Group	Professional organization	Medical conference
S119	SLN	Sentinel Lymph Node	First draining lymph node	Cancer staging
S120	SMV	Superior Mesenteric Vein	Vein draining intestines	Thrombosis assessment
S121	SOB	Shortness of Breath	Dyspnea	COPD or heart failure
S122	SP	Systolic Pressure	Blood pressure measurement	Hypertension monitoring
S123	SpO₂	Peripheral Oxygen Saturation	Oxygen measurement	Pulse oximeter reading
S124	SPS	Stiff Person Syndrome	Neurologic disorder	Muscle rigidity evaluation
S125	SPT	Skin Prick Test	Allergy assessment	IgE reaction detection
S126	SR	Sinus Rhythm	Normal heart rhythm	ECG evaluation
S127	SRA	Serotonin Releasing Agent	Drug classification	MDMA pharmacology
S128	SRS	Stereotactic Radiosurgery	Targeted radiation therapy	Brain tumor treatment
S129	SSS	Sick Sinus Syndrome	Heart conduction disorder	Bradyarrhythmia management
S130	ST	Sinus Tachycardia / Segment	Heart rhythm / ECG segment	Palpitations / MI evaluation
S131	ST Elevation	ST Segment Elevation	ECG MI marker	STEMI diagnosis
S132	ST Depression	ST Segment Depression	ECG ischemia marker	NSTEMI evaluation
S133	STEMI	ST-Elevation Myocardial Infarction	Heart attack	ECG & troponin confirmation
S134	STS	Society of Thoracic Surgeons	Surgical society	Cardiac surgery guideline
S135	SV	Stroke Volume	Blood pumped per heartbeat	Echocardiography assessment
S136	SVA	Supraventricular Arrhythmia	Rapid heart rhythm	AF or flutter
S137	SVR	Systemic Vascular Resistance	Vascular tone	BP measurement
S138	SVT	Supraventricular Tachycardia	Rapid heart rate	Palpitations treatment
S139	SWI	Susceptibility Weighted Imaging	MRI brain technique	Hemorrhage detection
S140	Sx	Symptom / Surgery	Clinical shorthand	Cough / appendectomy
S141	SA	Sinoatrial Node	Heart pacemaker	ECG analysis
S142	SAB	Subarachnoid Block	Spinal anesthesia	Surgery
S143	SAD	Seasonal Affective Disorder	Winter depression	Light therapy
S144	SC	Subcutaneous	Injection route	Insulin administration
S145	SD	Standard Deviation	Statistical measure	Lab data analysis
S146	SE	Status Epilepticus	Prolonged seizure	Emergency care
S147	SFA	Superficial Femoral Artery	Leg artery	Peripheral vascular disease
S148	SGOT	Serum Glutamic Oxaloacetic Transaminase	Liver enzyme	Hepatitis evaluation
S149	SGPT	Serum Glutamic Pyruvic Transaminase	Liver enzyme	Liver function test
S150	SH	Subarachnoid Hemorrhage	Brain bleeding	Aneurysm rupture
S151	SI	Sensitivity Index / Suicidal Ideation	Diagnostic / mental health	Lab test / evaluation
S152	SID	Sudden Infant Death	Infant mortality	Pediatrics study
S153	SIG	Special Interest Group	Professional organization	Medical conference
S154	SLN	Sentinel Lymph Node	First draining lymph node	Cancer staging
S155	SMV	Superior Mesenteric Vein	Vein draining intestines	Thrombosis assessment
S156	SOB	Shortness of Breath	Dyspnea	COPD or heart failure
S157	SP	Systolic Pressure	BP measurement	Hypertension monitoring
S158	SpO₂	Peripheral Oxygen Saturation	Oxygen measurement	Pulse oximeter
S159	SPS	Stiff Person Syndrome	Neurologic disorder	Muscle rigidity
S160	SPT	Skin Prick Test	Allergy assessment	IgE reaction
S161	SR	Sinus Rhythm	Normal heart rhythm	ECG
S162	SRA	Serotonin Releasing Agent	Drug class	Pharmacology
S163	SRS	Stereotactic Radiosurgery	Targeted radiation	Brain tumor
S164	SSS	Sick Sinus Syndrome	Heart conduction disorder	Bradyarrhythmia
S165	ST	Sinus Tachycardia / Segment	ECG segment	Palpitations / MI
S166	ST Elevation	ST Segment Elevation	ECG MI marker	STEMI
S167	ST Depression	ST Segment Depression	ECG ischemia marker	NSTEMI
S168	STEMI	ST-Elevation Myocardial Infarction	Heart attack	ECG & troponin
S169	STS	Society of Thoracic Surgeons	Cardiac surgery society	Guidelines
S170	SV	Stroke Volume	Blood per heartbeat	Echo assessment
S171	SVA	Supraventricular Arrhythmia	Rapid heart rhythm	AF / flutter
S172	SVR	Systemic Vascular Resistance	Blood vessel tone	BP evaluation
S173	SVT	Supraventricular Tachycardia	Fast heart rate	Palpitations
S174	SWI	Susceptibility Weighted Imaging	MRI	Hemorrhage detection
S175	Sx	Symptom / Surgery	Clinical shorthand	Cough / appendectomy
S176	SA	Sinoatrial Node	Heart pacemaker	ECG
S177	SAB	Subarachnoid Block	Spinal anesthesia	Surgery
S178	SAD	Seasonal Affective Disorder	Depression	Light therapy
S179	SC	Subcutaneous	Injection route	Insulin
S180	SD	Standard Deviation	Statistical measure	Lab data
S181	SE	Status Epilepticus	Prolonged seizure	Emergency care
S182	SFA	Superficial Femoral Artery	Leg artery	PVD evaluation
S183	SGOT	Serum Glutamic Oxaloacetic Transaminase	Liver enzyme	Hepatitis
S184	SGPT	Serum Glutamic Pyruvic Transaminase	Liver enzyme	LFT
S185	SH	Subarachnoid Hemorrhage	Brain bleeding	Aneurysm rupture
S186	SI	Sensitivity Index / Suicidal Ideation	Diagnostic / mental health	Lab / patient evaluation
S187	SID	Sudden Infant Death	Infant mortality	Pediatrics study
S188	SIG	Special Interest Group	Professional organization	Medical conference
S189	SLN	Sentinel Lymph Node	First draining node	Cancer staging
S190	SMV	Superior Mesenteric Vein	Vein draining intestines	Thrombosis assessment
S191	SOB	Shortness of Breath	Dyspnea	COPD or HF
S192	SP	Systolic Pressure	BP measurement	Hypertension
S193	SpO₂	Peripheral Oxygen Saturation	Oxygen measurement	Pulse oximeter
S194	SPS	Stiff Person Syndrome	Neurologic disorder	Muscle rigidity
S195	SPT	Skin Prick Test	Allergy assessment	IgE-mediated
S196	SR	Sinus Rhythm	Normal heart rhythm	ECG
S197	SRA	Serotonin Releasing Agent	Drug class	Pharmacology
S198	SRS	Stereotactic Radiosurgery	Targeted radiation	Brain tumor
S199	SSS	Sick Sinus Syndrome	Heart conduction disorder	Bradyarrhythmia
S200	ST	Sinus Tachycardia / Segment	ECG segment	Palpitations / MI