Shared Flashcard Set

Details

Final Practical
SEP and Blood Gases
33
Chemistry
Graduate
04/17/2013

Additional Chemistry Flashcards

 


 

Cards

Term
Explain the process of electrophoresis
Definition
Electrophoresis is a screening technique used to separate serum protein by relative mobility. The proteins migrate through the field by electric current toward the positive node. The rate of migration depends a charge and mass, and mobility is directly proportional to net charge.
Term
Calculate the levels in g/dl of each protein band
Definition
Protein fraction (g/dL) = % of protein fraction x total protein (g/dL)
Term
Acute inflammation
Definition
decreased albumin, increased alpha 1, increased alpha 2, increased beta and decreased gamma.
Term
Chronic Inflammation
Definition
decreased albumin, increased alpha1, increased alpha2, and increased gamma.
Term
Acute cirrhosis
Definition
decreased albumin, decreased alpha2, beta gamma bridg
Term
Chronic cirrhosis
Definition
decreased albumin, decreased alpha2, decreased beta
Term
Nephrotic syndrome
Definition
decreased albumin, increased alpha 2, increased beta
Term
Hypogammaglobulinemia
Definition
severely decreased gamma
Term
Alpha-1 Antitrypsin deficiency
Definition
decreased alpha 1
Term
Monoclonal gammopathy
Definition
decreased albumin, increased gamma
Term
Polyclonal gammopathy
Definition
decreased albumin, increased gamma
Term
Acute thermal injury
Definition
decreased albumin, decreased alpha 1, and decreased gamma
Term
Discontinuities/broken bands
Definition
Discontinuities/broken bands
Term
Unequal migration of samples across width of gel
Definition
clean electrodes
Term
Bacterial growth
Definition
impedes separation of proteins
Term
Distorted bands
Definition
too much sample (crescent shape) or an air bubble present
Term
Doughnut appearance in band
Definition
elevated protein level
Term
User interface
Definition
computer piece
Term
Reagents
Definition
inside the instrument
Term
Electrodes-
Definition
inside
Term
Printer
Definition
results
Term
LIS interface
Definition
hospital information system
Term
measurement requirements for blood gas analysis
Definition
Membrane free from protein build-up, bacterial contamination
Maintenance always important
Accurate calibration
Constant Temperature, usually 37˚C
Term
Correction for abnormal body temp
Definition
Accurate Barometer (internal) – altitude affects measurement
Term
pre-analytical factors that affect blood gas parameters
Definition
pre-analytical factors that affect blood gas parameters
Term
proper sample handling and collection for blood gas analysis
Definition
Whole blood well mixed in syringe containing heparin.
Usually collected from hand or art. line
Arterial baseline: pH, gases, cooximetry
Venous OK if O2 assessment less essential
Maintain anaerobic conditions
Term
State five factors that affect Electrophoretic mobility
Definition
The five factors the affect Electrophoretic mobility are (1) net electric charge of the molecule (2) size and shape of molecule (3) electrical field strength (4) properties of supporting medium and (5) temperature of operation.
Term
Calculate the concentration in g/dL for each electrophoretic fraction of a specimen having a total protein of 6.4 g/dL with 47% albumin, 4% alpha-1,
9% alpha-2, 11% beta, and 29% gamma
Definition
protein fraction (g/dL) = % protein fraction × Total Protein (g/dL)

1.856 g/dL
Term
What are the common problems encountered in Serum Protein Electrophoresis Analysis?
Definition
Three common problems encountered in Serum Protein Electrophoresis Analysis are (1) discontinuous or broken bands (2) unequal migration of samples across width of gel and (3) bacterial growth which impedes separation of proteins.
Term
State Reference Ranges for arterial blood gas analysis pH
Definition
7.35-7.45
Term
State Reference Ranges for arterial blood gas analysis ctCO2
Definition
23-29 mEq/L
Term
State Reference Ranges for arterial blood gas analysis PCO2
Definition
35-45 mmHg
Term
pre-analytical factors such as (air exposure, delayed testing, high altitude, etc) affect pH in blood gas analysis?
Definition
Pre-analytical factors can change the reading of the blood gas specimen produce an invalid result which does not accurate reflect the condition of the patient. Air exposure will increase the pH, decrease to pCO2 and increase the pO2. A delay in testing will decrease both the pH and pO2 but increase the pCO2. High altitudes will increase the pH and decrease both pCO2 and pO2. If the sample is collected in a tube containing liquid heparin this will decrease pH and increase pCO2. A high white blood cell count will decrease pH and pO2 but increase pCO2. Anxiety and pain will increase the pH and decrease both pO2 and pCO2.
Supporting users have an ad free experience!