NP
neuropsychiatry
N.P.
nurse practitioner
NPH
neutral protamine Hagedorn
NPN
non protein hydrigen
NPO
nil per os; nothing by mouth
NQRST
narrot QRS tachycardia
NS, NSS
normal saile solution
NSAIDs
non-steroidal anti-inflammatory drugs
NSR
normal sinus rythm
NSVT
nonsustained ventrcular tachycardia