Vaccination and Chemotherapy Notes

Key Terms in Vaccination

  • Live Attenuated Vaccines vs. Inactivated Vaccines
    • Live attenuated vaccines contain a form of the living microbe that has been weakened.
    • Inactivated vaccines contain dead pathogens.
    • Both types elicit similar immune responses and have similar adverse effects, but they differ significantly in contraindications.

Nursing Administration Protocol

  • Importance of understanding vaccine protocols for nurses.
  • Key actions for nurses:
    • Prioritize and monitor patient responses to all vaccines.
    • Be aware of vaccination timelines, especially in pediatrics regarding early childhood vaccines.

Active Immunity vs. Passive Immunity

  • Active Immunity
    • Develops through exposure to pathogens, leading T cells to produce antibodies.
    • Takes time to develop but offers long-lasting immunity.
  • Passive Immunity
    • Involves the administration of pre-formed antibodies.
    • Provides immediate immunity but is short-lived.
    • Example referenced: Flu vaccine, where individuals may require boosters over time.

Individual Immunizations

  • Type of Vaccines:
    • Toxoid or Acellular Vaccines.

DTaP Vaccine (Diphtheria, Tetanus, and Pertussis)

  • Common early childhood vaccine.
  • Adverse Effects:
    • Injection site pain and fever, both transient and expected.
    • Rarely, encephalopathy can occur; linked to symptoms similar to hepatic encephalopathy (confusion, agitation).
Monitoring Considerations for DTaP:
  • Persistent high fever or seizures must be treated as medical emergencies.
  • Inconsolable crying in infants could indicate encephalopathy due to communication barriers.

Live Attenuated Vaccines

MMR Vaccine (Measles, Mumps, Rubella)

  • Adverse Effects:
    • Fever, local rash, joint pain (transient).
    • Symptoms can resemble those of autoimmune disorders like lupus and rheumatoid arthritis.
  • Contraindications:
    • Pregnancy should be avoided for four weeks post-vaccination.
Pregnancy and Severe Immunocompromised Patients
  • Important to avoid live attenuated vaccines in these populations.
  • Suggested contraceptive methods include hormonal options, abstinence, and condoms as a preventive measure.

Varicella Vaccine (Chickenpox)

  • Adverse Effects:
    • Mild rash and fever expected.
    • Serious complications may include pneumonia or encephalitis, requiring medical attention.
  • Contraindications:
    • Pregnant and immunocompromised individuals should avoid this vaccine.

Influenza Vaccine

  • Available as both inactivated and live attenuated formulations.
  • Adverse Effects:
    • Local reactions, fever, malaise (transient).
    • Rare risk of Guillain-Barre syndrome.
  • Monitoring:
    • Live attenuated vaccines may present risks to pregnancy, infants, and individuals over 50 years.

HPV Vaccine (Human Papillomavirus)

  • Given to prevent cancers associated with HPV.
  • Adverse Effects:
    • Injection site pain and fever (transient).
  • Risk of syncope and fainting; patients should be monitored for 15 minutes post-administration.

General Vaccine Administration Principles

  • Anaphylaxis is a serious reaction that prohibits future vaccines, while mild illness does not.
  • Clarification that having a low-grade fever is not a contraindication for vaccination.

Chemotherapy and Vaccination

  • Oncology links with immunizations:
    • Use of antiviral and antibacterial medications in cancer prevention.
    • Chemotherapy aims to target abnormal cell growth, paralleling immunization goals.

Cell Cycle and Cancer Development

  • Cells replicate through intricate cycles, with mutations leading to uncontrolled growth.
  • Interruption of apoptosis and immune system failures contribute to neoplasia.

Chemotherapeutic Agents and Their Effects

Methotrexate

  • An antimetabolite used for liquid tumors and certain solid tumors.
  • Adverse Effects:
    • Major risk of myelosuppression, leading to increased infection risk.
    • Mucositis and renal toxicity are noted.

Doxorubicin

  • An anthracycline causing DNA cross-linking.
  • Adverse Effects:
    • Myelosuppression and cardiotoxicity leading to potential heart failure.
    • Red urine is benign but alarming to patients; regular echocardiograms are needed.

Cisplatin

  • Used for a range of cancers, notably testicular and bladder cancers.
  • Adverse Effects:
    • Severe nausea and vomiting, nephrotoxic effects, and ototoxicity.

Tamoxifen

  • An estrogen antagonist used in breast cancer treatment.
  • Adverse Effects:
    • Potential for thromboembolism and endometrial cancer.

Tyrosine Kinase Inhibitors (TKIs)

  • Used primarily for leukemias.
  • Targeting BCR-ABL enzyme, with adverse effects including fluid overload, edema, and GI upset.

Immunomodulation in Cancer Treatment

  • Interferon Alpha-2b: A medication enhancing the immune system's capability to fight cancer cells.
  • Adverse Effects:
    • Flu-like symptoms and depression, requiring careful monitoring.

Conclusion

  • Understanding differences in vaccine types and associated nursing responsibilities can optimize patient safety and outcomes.
  • Continuous monitoring for adverse effects in cancer therapies is essential, with a focus on patient quality of life.