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Medical Abbreviations S YMBOL MEANING C concentration, content " seconds C & S culture & sensitivity ' minutes c with Ø decreased CA cancer ↑ increased CBC complete blood count = equal cc > greater than CCU Coronary Care Unit < less than Cdyn dynamic compliance D change cl clear ° hours cm centimeter x dash above any symbol cmH 2O cm water pressure indicates a mean value CNS central nervous system dot above any symbol CO 2 carbon dioxide indicates a timed event COPD chronic obstructive x˙ † † c m3 pulmonary disease a before abd abdomen ABG arterial blood gas ac before meals CPT chest physiotherapy ad lib as needed CSF cerebral spinal fluid AFB acid-fast bacillus C St static compliance AM aerosol mask CTA clear to auscultation amt amount CV cardiovascular anat anatomical CVP central venous pressure an t anterior CXR chest x-ray approx approximately DC discontinue AV atrioventricular DOB date of birth bid twice daily Dx, dx diagnosis BP blood pressure ECG (EKG) electrocardiogram B/S breath sounds ER emergency room BUN blood urea nitrogen et and Bx, bx biopsy ETT endotracheal tube C Centigrade, Celsius F Fahrenheit, gas conc. as a C compliance CPPD chest percussion & postural drainage decimal f frequency F IO 2 fraction of inspired O2 ml milliliter FOB foot of bed MLT minimal leak technique Fx, fx fracture mm millimeter g gram mmHg millimeters of mercury GI gastrointestinal MOV minimal occlusion vol. gtt drop NC nasal cannula H & H hemoglobin & hematocrit no number h hour noc night H 2O water NPO nothing by mouth HCM high concentration mask NRB nonrebreathing bag Hct hematocrit NT nasotracheal Hg mercury O2 oxygen Hgb hemoglobin OR operating room HHN hand-held nebulizer p pulse HOB head of bed P partial pressure hs at bedtime p after hx history PaCO 2 arterial CO2 partial I & O intake and output ICU Intensive Care Unit PaO 2 arterial O2 partial pressure IM intramuscular P A CO 2 alveolar CO2 partial inf inferior IPPB intermittent positive pressure pressure PAO 2 pressure breathing alveolar O2 partial pressure IS incentive spirometer PAP pulmonary artery pressure IV intravenous pc after meals kg kilogram PD postural drainage L, l liter, left PEARL pupils equal & reactive to L/min, lpm liters per minute lat lateral PO pulse oximeter lb pound p.o. by mouth LLL left lower lobe post posterior LMSB left mainstem bronchus postop postoperative LUL left upper lobe preop preoperative m meter prn as needed med medial psi pounds per square inch mEq milliequivalent pt patient mg milligram PT physical therapy min minute light PWP q † † † pulmonary wedge USN ultrasonic nebulizer pressure V ˙ V gas volume V˙ A V˙ CO2 alv. ventilation per min. V˙ E exp. via by way of VM V˙ O2 venti-mask every q2h every 2 hours qd every day † flow of gas (vol./time) CO 2 production per min. qh every hour qid 4 times daily qod every other day qs quantity sufficient Q ˙ Q volume of blood VQ Scan ventilation-perfusion scan flow of blood (vol./time) † shunt (blood) VS vital signs VT tidal volume cardiac output WBC white blood count R, RR, resp respiratory rate x times Raw airway resistance y/o year old RBC red blood count RLL right lower lobe RML right middle lobe RMSB right mainstem bronchus rt. right RUL right upper lobe Rx treatment s without Q UALIFYING S saturation in blood a artery or arterial SaO 2 arterial O2 saturation A alveolar SM simple mask ATPD ambient temp and SOB short of breath SpO 2 sat. by pulse oximeter stat immediately sup superior B barometric SVN small volume nebulizer BTPS body temp, sea level Sv O2 mixed venous saturation Sx suction c capillary T temperature D dead space t/o throughout E expired gas tid three times daily I inspired gas tol tolerated L lung TPR temp, pulse, resp rate ˙s Q ˙T Q † † † volume per minute O 2 consumption per min. pressure, dry ATPS ambient temp and pressure, saturated pressure, saturated standard temperature and PEFR peak expiratory flow rate pressure, dry RV residual volume T tidal TLC total lung capacity v vein, venous VC vital capacity v mixed venous VD physiologic dead space VD anat anatomical dead space STPD example: VT tidal volume VD A alveolar dead space CL lung compliance VT tidal volume P ULMONARY FUNCTION ERV expiratory reserve volume FEF forced expiratory flow FEV forced expiratory volume FEV .5 forced exp. volume (in .5 sec.) FEV 1 forced exp. volume (in 1 sec.) FEV 3 forced exp. volume (in 3 sec.) FRC functional residual capacity FVC forced vital capacity IC inspiratory capacity IRV inspiratory reserve volume IVC inspiratory vital capacity MVV max. voluntary ventilation NIF negative inspiratory force NIP negative inspiratory pressure
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