Blood Glucose Monitoring - NCLEX-PN

Gloves are required before skin puncture and blood handling. Gloves protect against bloodborne pathogens, donned after hand hygiene but before any invasive procedure involving blood exposure.

Apply firm pressure with clean gauze until bleeding stops. Firm pressure promotes hemostasis without contaminating the site, preventing hematoma formation or prolonged bleeding.

Use the side of the fingertip and appropriate lancet depth. This technique targets less sensitive areas and controls penetration to minimize tissue trauma and discomfort during sampling.

Use a new single-use lancet for each puncture. Single-use lancets prevent cross-contamination and infection, aligning with infection control guidelines for each procedure.

Warm the hand to improve perfusion before sampling. Warming enhances vasodilation and blood flow, improving sample quality and accuracy in capillary glucose testing.

Value, time, site, interventions, and patient response. Comprehensive documentation supports continuity of care, legal requirements, and evaluation of treatment effectiveness.

Use two patient identifiers per facility policy. Two identifiers prevent errors in patient care, ensuring the glucose reading is associated with the correct individual per safety standards.

Repeat per device policy and notify provider; confirm with lab if indicated. Errors or extreme readings may indicate device malfunction or critical values, requiring retesting and escalation for patient safety.

Polyuria with polydipsia and dry mucous membranes. These osmotic diuresis symptoms occur due to high glucose pulling fluid into urine, unlike the neuroglycopenic effects of low glucose.

Diaphoresis with shakiness and confusion. These adrenergic symptoms result from the body's counter-regulatory response to low blood sugar, distinguishing it from hyperglycemic signs.

Treat hypoglycemia promptly per protocol. Symptomatic low glucose poses immediate risks like seizures, necessitating rapid correction to stabilize the patient.

Recheck and confirm with a laboratory plasma glucose if needed. Inconsistencies may indicate device error or physiological factors, requiring verification to guide appropriate clinical interventions.

Poor peripheral perfusion (for example, shock or severe dehydration). Reduced blood flow in such conditions can lead to discrepancies between capillary and venous glucose levels due to altered perfusion.

Wash the area and follow facility exposure protocol immediately. Immediate washing minimizes infection risk, and following protocol ensures proper reporting and post-exposure prophylaxis if needed.

Immediately discard in an approved sharps container. Sharps containers prevent needlestick injuries and comply with biohazard waste regulations for safe disposal of contaminated items.

Discard the strip and repeat with a new strip. Incomplete filling may cause erroneous results, so a new strip ensures proper blood volume for accurate glucometer analysis.

Excessive squeezing or “milking” of the finger. This can introduce interstitial fluid or cause hemolysis, leading to falsely low glucose readings in capillary samples.

Wipe away the first drop and use the next drop. The first drop may contain excess tissue fluid or contaminants, so discarding it ensures a purer capillary blood sample for testing.

Wash with soap and water, then dry thoroughly. Washing removes contaminants that could interfere with the glucometer's accuracy or cause false glucose level alterations.

Wait until the site is fully dry. Residual alcohol can hemolyze red blood cells or dilute the sample, leading to inaccurate glucose measurements.

Lateral side of the fingertip pad. This site minimizes pain by avoiding central nerve-dense areas while ensuring adequate blood flow for accurate sampling.

Thumb (and index finger when possible). These fingers are more prone to calluses and sensitivity due to frequent use, potentially affecting sample quality and patient comfort.

Perform hand hygiene. Hand hygiene prevents cross-contamination and infection, adhering to standard infection control protocols before patient contact.

Clean with alcohol and allow to air-dry completely. Alcohol reduces microbial load, and air-drying prevents dilution of the blood sample that could skew glucose readings.