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TEST 3 - CRT

PFT, NEO/PEDI, CPR, MEDS, ABG

QuestionAnswer
EXHALED VT IS MEASURED WITH RESPIROMETER @ BEDSIDE OR BY SPIROMETRY
WHEN IS VT DECREASED RESTRICTIVE DISEASE
WHEN IS VT INCREASED OBSTRUCTIVE DISEASE
NORMAL VT IS 500 ML OR 3 ML/LB OF BODY WEIGHT
DEFINE IRV INSPIRATORY RESERVE VOLUME-THE MAXIMUM VOLUME OF AIR THAT CAN BE INSPIRED AFTER A NORMAL INSPIRATION
NORMAL VALUE FOR IRV 3000 ML
DEFINE ERV EXPIRATORY RESERVE VOLUME-VOLUME OF AIR EXHALED AFTER A NORMAL EXPIRATION
ERV IN OBSTRUCTIVE N RESTRICTIVE DISEASE WOULD BE NORMAL OR DECREASED IN BOTH
NORMAL VALUE FOR ERV 1000 ML AND 20%-25% OF THE VC
DEFINE RV RESIDUAL VOLUME-VOLUME OF AIR LEFT IN LUNGS AFTER A MAXIMAL EXPIRATION
HOW DO YOU MEASURE RV NITROGEN WASHOUT OR HELIUM DILUTION
CALCULATION FOR RV RV=FRC-ERV
RV IN OBSTRUCTIVE N RESTRICTIVE DISEASE INCREASED IN OBSTRUCTIVE N DECREASED IN RESTRICTIVE
DEFINE FRC FUNCTIONAL RESIDUAL CAPACITY-AMOUNT OF AIR LEFT IN LUNGS AFTER A NORMAL EXPIRATION
CALCULATION FOR FRC ERV+RV=FRC
HOW IS FRC MEASURED HELIUM DILUTION, NITROGEN WASHOUT, OR BODY PLETHYSMOGRAPHY
STEPS TO MEASURE FRC BY HELIUM FILL SPIROMETER WITH 600ML OF GAS N 10% HELIUM. PATIENT TAKES NORMAL BREATH, AT END OF EXHALE CONNECT TO SYSTEM. PT REBREATHES THE GAS, CO IS REMOVED, HELIUM DILUTED
Created by: celina1382
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