If you are drawing blood off an existing IV line, you will need an
alcohol pad or appropriate cleansing agent for
the port, a tube holder, a tourniquet, a needleless vacuum collection device, appropriate blood tubes, patient labels and a saline flush.
Can you draw blood above an IV site?
You may only draw above the IV
. You can draw below the IV with a tourniquet between the IV site and the draw site. You can only draw from the opposite arm. The available data suggest that the second and third options are equally appropriate.
Can I draw blood from an IV site?
A. Blood samples should NOT be drawn during IV starts or from established IV catheters
except for patients on thrombolytics
(to reduce number of sticks), or in an emergency. B. Peripheral lab samples should be obtained using a straight needle and either the Vacutainer or syringe method.
Is it good practice to draw blood samples from a peripheral IV?
Conclusions. Blood sampling from
used peripheral intravenous cannulae
is a reasonable clinical practice for haematology and biochemistry samples. Potassium samples from used peripheral intravenous cannulae can be used in situations where error up to ±0.47 mmol/L is acceptable.
Why can’t you pull blood from an IV?
Blood that is drawn from a vein that has an intravenous (IV) line may be diluted by the IV fluid. This can ultimately affect the accuracy of the blood test results. Therefore,
an arm containing an IV should not be used to draw blood specimens if it can be avoided
.
Why can’t you draw blood from a PICC line?
Excessive force could cause
a flexible PICC to temporarily collapse and occlude the backflow of blood. On a peripheral vein, you could be pulling the vein wall over the catheter lumen as in this drawing.
Can IV fluids dilute blood?
For example, large volumes of intravenous (IV) fluids can overexpand the liquid or plasma component of peripheral blood, diluting the
percentage of formed blood cell elements
.
Can you draw blood from a line?
Blood drawing from indwelling arterial or central venous lines is done through a
stopcock
with a needleless access device on the sampling port.
Can you draw blood from an AccuCath?
AccuCath Intravenous Catheter System will be used for IV therapy during inpatient stay. Intervention includes vascular access, fluid infusion, and blood sample removal.
When drawing blood below an IV site notify the nurse to stop the IV for at least?
Draw the patient promptly at the 5 minute mark. If you are drawing below the IV site you will need to shut the
IV pump off for 2 minutes
.
Can you draw blood from a saline lock?
fluids and saline locks can lead to erroneous lab results, and you also run the risk of damaging or dislodging the device with tourniquet placement. If a patient has an I.V., saline lock, or PICC line that can’t be used for blood draws, the best choice is
to perform the venipuncture on the opposite extremity
.
How do you know if a blood sample is contaminated?
Since EDTA is not measured on routine chemistry samples in the laboratory, the most common way to identify sample contamination is to
recognize abnormal analyte patterns that suggest its presence
. Potassium and calcium are analytes that are routinely measured in many testing panels.
How much blood do you waste when drawing from IV?
If possible, withdraw
at least 3 ml of blood
to waste. If unable to withdraw blood with 10 ml flush, apply tourniquet 3-4 inches above IV, attach 3 ml syringe and pull back. The smaller syringe often allows blood withdrawal where larger one won’t.
Who is responsible for turning the IV back on after obtaining a specimen?
Ensure that the fluid has stopped flowing through the line, and wait at least two minutes before performing the venipuncture. It is imperative that
the phlebotomist witness
that the IV has physically been turned off by the health care provider and then turned back on after the draw has been completed.
What is the alternative if IV line is not possible?
There are a number of therapeutic options for fluid administration in patients who lack usual venous access. Ways to establish this access include limb elevation and wrapping, the application of
nitroglycerin ointment
to dilate veins, and blood pressure cuff inflation.
