N Na sodium (an electrolyte) NB Newborn NCV Nerve conduction velocity NG Nasogastric NIDDM Non–insulin-dependent diabetes mellitus NIHL Noise-induced hearing...

M MCH Mean cell hemoglobin (average amount of hemoglobin per red cell) MCHC Mean cell hemoglobin concentration (average concentration of...

K K Potassium (an electrolyte) KD Knee disarticulation KUB Kidney, ureter, bladder L L1, L2, and so on first lumbar...

I IAS Interatrial septum IBD Irritable bowel disease I&D Incision and drainage IBS Irritable bowel syndrome ICD Implantable cardioverterdefibrillator ICP...

H HAV Hepatitis A virus Hb, Hgb Hemoglobin HBV Hepatitis B virus HCG Human chorionic gonadotropin HCl Hydrochloric acid HCT,...

G G Gravida (pregnant) GB Gallbladder GBP Gastric bypass GBS Gallbladder series (x-ray studies) GC Gonococcus (Neisseria gonorrhoeae) G-CSF Granulocyte-colony-stimulating...

F FBS Fasting blood sugar FECG, FEKG Fetal electrocardiogram FH Family history FHR Fetal heart rate FHT Fetal heart tone...

E EBR External beam radiation EBT External beam therapy EBV Epstein-Barr virus ECCE Extracapsular cataract extraction ECG, EKG Electrocardiogram; electrocardiography...

D D Diopter (lens strength) D&C Dilatation (dilation) and curettage dc, DC, D/C* Discharge; discontinue Decub. Decubitus (lying down) D.O....

C c with C&S Culture and sensitivity c/o Complains of, complaints C1, C2, and so on First cervical vertebra, second...