**Specialized Specimen Collection and Handling

This lesson focuses on the specialized techniques and considerations for performing phlebotomy on diverse patient populations. You will learn to adapt your skills and knowledge to ensure patient safety and comfort across a variety of demographics and medical conditions.

Learning Objectives

  • Identify the unique challenges and considerations for drawing blood from pediatric, geriatric, oncology, and patients with specific medical conditions.
  • Demonstrate proficiency in adapting phlebotomy techniques, including site selection, equipment choices, and patient communication, for different patient populations.
  • Understand and apply ethical considerations and legal responsibilities related to phlebotomy in special patient groups.
  • Recognize the importance of patient safety and infection control protocols specific to each patient population.

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Lesson Content

Pediatric Phlebotomy

Drawing blood from children requires a gentle and patient approach. Factors to consider include:

  • Age and Development: Infants, toddlers, and older children have varying levels of cooperation and tolerance. Explain the procedure in age-appropriate terms.
  • Site Selection: Choose the most appropriate site (e.g., heel stick for infants, butterfly needle for children). Avoid unnecessary punctures. Veins in the antecubital fossa are preferred when possible, using a smaller gauge needle.
  • Equipment: Use smaller gauge needles (23-25 gauge), butterfly needles, and pediatric tubes (microtainer tubes for capillary blood, small vacutainer tubes). Consider using a distraction technique such as toys or storytelling during the procedure.
  • Technique: Secure the limb, draw blood with minimal trauma, and be prepared for potential needle phobia. Observe the patient closely for signs of stress. Use appropriate blood collection tubes.
  • Communication: Speak calmly and reassuringly to both the child and parent/guardian. Explain the procedure step-by-step.

Geriatric Phlebotomy

Older adults may present unique challenges due to age-related changes. Consider:

  • Skin Integrity: Elderly patients often have fragile skin, making vein selection crucial. Avoid areas with bruising, skin tears, or edema. Apply a tourniquet gently and avoid excessive pressure. Skin can be more prone to bruising.
  • Vein Condition: Veins may be sclerotic (hardened), rolling, or difficult to locate. Palpate carefully. Use a smaller gauge needle, and a butterfly needle if necessary.
  • Medications: Many elderly patients are on blood thinners (anticoagulants), increasing the risk of bleeding and hematoma formation. Apply pressure to the puncture site for an extended period.
  • Communication: Speak slowly and clearly, and provide extra time for the patient to understand instructions. Be patient and respectful. Make sure the patient has understanding of the procedure and any aftercare instructions.
  • Mobility Issues: Be mindful of mobility issues; assist the patient as needed and ensure a safe environment.

Oncology Patients

Patients undergoing cancer treatment have specific needs:

  • Chemotherapy and Radiation: These treatments can affect blood counts and vascular access. Avoid drawing blood from the arm on the side of a mastectomy or where radiation therapy has been administered. Palpate carefully and select the best vein.
  • Central Venous Catheters (CVCs): Phlebotomy may be restricted or prohibited in areas where a CVC is present. Follow facility protocol for drawing blood from a CVC.
  • Risk of Infection: Oncology patients often have compromised immune systems. Strict aseptic technique is crucial.
  • Thrombocytopenia: Low platelet counts can increase the risk of bleeding. Apply prolonged pressure to the puncture site.
  • Patient Anxiety: Cancer patients may be anxious about the procedure. Be empathetic and reassuring.

Patients with Specific Medical Conditions

Phlebotomy techniques need to be modified for patients with specific conditions:

  • Dialysis Patients: Avoid drawing blood from the arm with an arteriovenous (AV) fistula or graft. This access is vital for dialysis and must be protected. The site is a key area for maintaining function of the device and preserving it for its intended use.
  • Anticoagulant Therapy: Patients on blood thinners (e.g., warfarin, heparin) are at increased risk of bleeding. Apply prolonged pressure to the puncture site (5-10 minutes) and monitor the site for hematoma formation.
  • Burn Patients: Burns can cause scarred, fragile skin. Choose alternate sites and avoid burned areas.
  • Patients with Edema: The fluid buildup can alter the results of the tests so venous access can be difficult. Avoid drawing from edematous areas if possible, as it may dilute the sample. If a site in the arm isn't an option, consider lower extremity options.
  • Patients with Seizures: Safety is paramount. Have a plan in place. Ensure they have clear airway and have someone nearby in case of medical crisis
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