![]() |
|
Volume 19, Issue 3, July 2008
|
The Chemotherapy SIG Newlstter is unwritten by Bristol-Myers Squibb Oncology. |
Administering Oral Medications in the Treatment of Cancer
The use of oral agents in treating cancer is not new, but the development of so many agents that require administration over long periods of time has resulted in new challenges. Nurses in healthcare settings that do not routinely provide oncology medications often encounter patients who are undergoing treatment for cancer, and guidelines are sparse for how to prepare nurses for this situation. The following is offered merely as a starting point from which to build educational programs in preparing nurses in other specialties in the administration of oral oncology agents. What follows is intentionally simplistic as the goal is increased understanding for the novice. So, for the purists: Yes, I am aware that mucositis involves much more, and I would be happy to direct you to more extensive articles if desired. Disclaimers aside, let’s get started. Oral medications used to reduce tumor burdens, slow progression or prevent recurrence of cancer include chemotherapy agents, molecularly targeted agents, hormonal agents, and steroids, such as dexamethasone.Chemotherapy agents: What do they do? Quite simply, cytotoxic chemotherapy works to kill cancer cells by interfering with the cell division process. After exposure to the drug (or drugs), cancer cells ideally die as they try to divide. In this way, chemotherapy is considered specific to rapidly dividing cells. Unfortunately, side effects often occur as the result of the therapy affecting other rapidly dividing healthy cells. Alopecia (hair loss) occurs because hair follicles are rapidly dividing. Mucositis, a breakdown of the mucosa along the gastrointestinal tract, occurs for the same reason. Mucositis in the oral cavity, stomatitis, often is painful and a source of distress for patients when it interferes with the ability to eat or speak. More ominously for the patient being treated with chemotherapy is the impact of depleting blood cell reserves. Severe neutropenia, a drop in neutrophil counts, places the patient at high risk for infection without the reserve to fight it. Anemia, although easily corrected with transfusions and appropriate growth factor use, may affect quality of life because fatigue, shortness of breath, dizziness, and even short term memory loss often result. Thrombocytopenia (a drop in platelets) places the patient at risk for bleeding. However, platelet transfusions are usually reserved for patients with platelet counts of less than 10,000, unless active signs of bleeding are present. Current Oral Chemotherapy Drugs:
Molecularly Targeted Therapy for Cancer Treatment (The Small Molecule Drugs) Currently, the only oral medications in this class of drugs are classified as tyrosine kinase inhibitors (TKIs). Although patients might talk about these medications as their oral chemotherapy, they are not technically chemotherapy in the usual sense of the word. The simple way to think of how these drugs work is to think of them as blocking a message to the cancer cell's nucleus. Normally, molecules such as growth factors attach to different receptors that exist in cell membranes. These molecules initiate a complex cascade of reactions that basically “send a message” to the nucleus of the cell, telling it what to do. In cancer, certain receptors are expressed abnormally and numerously. Whenactivated, the message they “send” is essentially, “Let’s Divide. Let’s grow a blood supply. Let’s never die.” The small molecule drugs are able to slip into the receptors and work to slow tumor growth by stopping this message cascade. Slowing or arresting tumor growth usually is the goal of small molecule inhibitors, not curing the cancer. Importantly, stopping the medication, even for short periods of time, may allow the tumor to progress or develop resistance. Addressing home medication lists is very important to ensure that the drugs are continued during hospital stays unless a contraindication exists or an intentional change occurs in the treatment plan for the cancer. The contraindication or rationale for not continuing these medications should be documented because stopping these medicines may cause harm to the patient.Current Small Molecule Drugs:
Notice the similarity of generic names – All of the TKIs end in “-nib,” and they all work similarly. Some work on one type of cell receptor, and newer ones work on multiple types of receptors. They all work to block the messages that stimulate tumor growth. The most common side effects of these drugs are diarrhea and rashes. Uncomplicated rashes are not a reason to stop the medication, and they often are frequently correlated with a positive effect of the drug on the tumor. Sometimes the rashes are acne-like in appearance, but they will not respond to acne treatments. A key teaching point is for patients to avoid sun exposure because this may exacerbate the rash. Diarrhea is usually easily managed with loperamide (Imodium®, McNeil-PPC, Inc.). However, as with all assessments, documenting occurrences and severity, as well as notifying the physician if currently ordered measures are ineffective or inadequate in managing the problem is important. Biologic Therapy (Hormonal Medications): Breast Cancer Prostate Cancer The obtaining of orders and subsequent administration of these hormone therapies should be the same as with other medications. As with all medications, the nurse is responsible for reviewing information regarding unfamiliar drugs prior to administration. A chemotherapy competent nurse is not required in the administration of hormonal agents. Although a signed order is ideal, telephone orders are permissible for beginning or continuing hormonal agents if this will prevent unnecessary delays in treatment during a hospitalization. Administering Oral Chemotherapy and Oral Targeted Biologic Agents (Small Molecule Drugs)
Patient Education In teaching the patient, the nurse must be familiar with specific agents being used. Side effects vary among the different drugs in severity and frequency. The nurse should research unfamiliar agents in a drug manual. A web based source for chemotherapy drug information can be found here. Educating newly diagnosed patients with cancer regarding potential adverse effects of prescribed medications is important. Verbal teaching and written information should be given. Providing reassurance regarding the extensive supportive care available to help prevent some and manage the unavoidable side effects is equally important. Patients may find the ChemoCare Web site beneficial, which is exceptional in keeping information at an understandable level. Education sheets can also be printed from this site regarding specific drugs and other cancer related questions. Nurses should be aware of the following common side effects: Neutropenia—As white counts drop to critically low levels, the patient becomes at high risk for contracting infections. Teaching the patient regarding the need for good hygiene, including frequent hand washing, may help prevent sepsis. Precautions that may help prevent infection when neutropenic: Avoid gardening. Avoid large crowds. Wear a surgical mask in public. Ensure food is fully cooked. If eating fresh fruits and vegetables, ensure they are cleansed adequately prior to peeling. Ideally, some say, fresh fruits and vegetables should not be eaten because of the risk of microbial exposure. For the same reason, it may be helpful to have no flowers or plants in the neutropenic patient’s room because of risk of fungal exposure and microbial growth in the stagnant water. Another important teaching point is what to do when fevers occur at home. Instruct the patient to call the doctor no matter when the fever occurs. If the patient is sent to the emergency room, be sure that the patient knows to tell the staff on duty that he or she has both a fever and has received chemotherapy. Hours make a difference in the patient's chance for fighting a neutropenia-associated infection. Antibiotics must be started quickly. The patient should never feel like it is okay to “wait until morning.” Also, make sure they have a thermometer and know how to use it at home. Growth factor support (G-CSF and GM-CSF) has helped change the face of oncology by achieving shorter and less severe periods of neutropenia. However, growth factors may not always be clinically necessary. NeutroPhil is an ONS patient education booklet developed to help the patient understand neutropenia and what they can do to prevent infection, It can be found online here. Thrombocytopenia—As platelet counts drop, the patient becomes at high risk for bleeding. Recommend soft toothbrushes, and if the patient does not floss, this is not the time to start. If the patient does floss, teach them to be very gentle and stop at the first sign of gum bleeding. The patient needs to avoid activities that put them at risk for injury. If they use razors, they need to switch to an electric razor. The patient needs to understand the seriousness of their bleeding risk. Keep it simple by telling the patient, “If you cut yourself, you are going to bleed, and you’ll have a hard time getting the bleeding to stop” when platelet levels are low. Some of those signs: Nausea and vomiting with coffee ground emesis, unexplained or spontaneous bruising or petechiae, gum bleeding, epistaxis (nosebleed), tarry stools, frank blood in stools, dropping blood pressure, tachycardia. Anemia—Anemia is managed through the use of transfusions and growth factor support (Epogen®, Amgen, Procrit®, OrthoBiotech Inc., Aranesp®, Amgen). Sometimes, rather than use a set of rigid guidelines, support of anemia may be dictated by whether the patient is symptomatic. The nurse must assess for symptoms of anemia as well as to teach the patient to watch for symptoms to ensure appropriate treatment. Symptoms include: Shortness of breath with exertion, dizziness on standing, fatigue, weakness, decreased short-term memory, and sometimes chest pain. Fatigue—Often correlated with anemia, fatigue can also be a direct effect of the chemotherapy and other treatment modalities, as well as an effect of the tumor activities. Besides managing anemia, teaching patients the benefits of moderate exercise as tolerated is important. Exercise is something patients can do for themselves to help reduce fatigue that has the support of clinical data. Chemotherapy Induced Nausea and Vomiting—Many supportive medications are available for managing nausea. Most of the oral cancer agents are not highly emetogenic (likely to cause nausea and vomiting). The two highly emetogenic oral agents (likely to cause emesis in > 90% of people without preventive agents) include hexamethylmelamine and procarbazine. Moderately emetogenic agents include: cyclophosphamide, etoposide, temozolomide, vinorelbine, and imatinib. If no antiemetics are ordered for the above medications to support the patient, the nurse should confirm with the physician that the omission is intentional. The goal is to prevent initial episodes of nausea and vomiting because adequately controlling nausea and vomiting once it occurs is more difficult. ASCO (American Society of Clinical Oncologists), NCCN (National Cancer Center Network), MASCC (Multinational Association of Supportive Cancer Care), and ONS (Oncology Nursing Society) have all issued similar guidelines for the prevention of CINV. The nurse should be familiar with CINV prevention prior to administering chemotherapy. For highly emetogenic chemotherapy, these national guidelines recommend utilization of
Use of aprepitant may also be considered with moderately emetogenic chemotherapy. For additional information regarding the prevention of CINV and guidelines, see www.nccn.org.
Polovich, M. (Ed.). (2003). Safe Handling of Hazardous Drugs. Pittsburgh, PA: Oncology Nursing Society. Polovich, M., White, J.M., & Kelleher, L. (Eds.). (2005). Chemotherapy and Biotherapy Guidelines and Recommendations for Practice. Pittsburgh, PA: Oncology Nursing Society.
|
The Chemotherapy SIG Newsletter is produced by members of the Chemotherapy SIG and ONS staff and is not a peer-reviewed publication. |
Special Interest Group Newsletter July 2008 |
|
What Inspired Me to Become an Oncology Nurse?
My introduction into the nursing world began when I was 18 years old. I became a volunteer at a local hospital to see if nursing might be a career goal for me. The first day on the job I knew that I had found my profession. My first job after nursing school was at St. Michael’s Medical Center in Newark, NJ on a renal unit. Most of the patients were either chronically or terminally ill. One exception was the patient in room 302B. His name was Vinny, a 29 year-old who was admitted with a diagnosis of fever with unknown origin. After an extensive work-up, a diagnosis of bacterial endocarditis was confirmed. Five weeks of IV Vancomycin and a lot of TLC from me placed him back to his usual state of health. Two years later we walked down the aisle and began to build a lifetime of dreams and a family filled with happiness. Five years after we were married we were challenged with cancer. At the age of 37, Vinny was diagnosed with squamous cell carcinoma of the ethmoid sinus, a rare but deadly cancer. Surgery, chemotherapy, and radiation became part of our daily lives for the next three years. In 1989, Vinny lost his fight with cancer. I was left alone as a young widow with two small children, and I had to figure out how to continue with life without my soul mate. I went back to work at St. Michael’s Medical Center and was asked to take a position in the outpatient hematology/oncology unit. How could a grieving single mother ever help these patients with cancer with their own issues of mortality? After working with these patients for about six months, I realized that God actually chose me to do this work by giving me the experience I lived through with my husband. I knew first hand what mucositis, diarrhea, vomiting, and fatigue meant to a patient five to seven days after chemotherapy. I knew the difficulty of scheduling childcare arrangements for frequent doctor appointments. I knew what it meant to fear not being able to provide financial stability for your family. I knew that the physical debilitation of his illness was not a passage in life at the age of 37. Vinny is and always will be my inspiration to care for others diagnosed with cancer. After working in oncology for 18 years I know that I can make a difference to each and every patient. When I go home at night and rest my head on my pillow I know that God has chosen this field for me. Vinny was taken away from me but I have been given a chance to provide comfort and care to oncology patients in need everyday. I love my job and I am grateful to have a profession that I can do such meaningful and rewarding work.
|
Special Interest Group Newsletter July 2008 |
PEPID™ Gets PEP®
Pepid™ RN ONS Suite® has undergone many important revisions since first being reviewed in this newsletter (Chemo SIG August 2006). Although perhaps still not living up to the claim of being a one-stop for all your information needs, PEPID RN ONS Suite is impressive in its comprehensive coverage of information oncology nurses might need. The most significant recent additions include the ONS Putting Evidence into Practice (PEP®) cards and long overdue chapters on leukemia and Hodgkin lymphoma. In daily practice, the nursing drug reference of the program will likely be most utilized, but many other tools and resources remain important components. A medical dictionary, medical calculators, a nursing procedures manual, a laboratory reference manual, and drug interaction and IV compatability tools make PEPID a great resource for oncology nurses. The program is available by subscription either online or in PDA format. For more information, click here: www.pepid.com.
|
Special Interest Group Newsletter July 2008 |
What's New in Oncology? Compiled by Michael Smart, RN, BSN, OCN® Many developments in oncology have occurred since our last issue, and the intent of this column is merely to provide brief summaries with links provided for those desiring the more extensive information to be found in the original articles. Medications:
Breast Cancer:
Leukemia:
Lymphoma:
Multiple Sclerosis:
Renal Cancer:
Rheumatoid Arthritis and Neoplasms:
|
Special Interest Group Newsletter July 2008 |
Articles of Interest
|
Special Interest Group Newsletter July 2008 |
The SIGs Virtual Community Keeps You Connected Jenny Shinsky The SIGs Virtual Community was developed to improve To navigate to your SIG’s page, visit the SIGs Virtual Community at http://sig.vc.ons.org and select “Find a SIG” from the top navigation. Many features in the SIGs Virtual Community are useful to all members. Below is an outline of the information that can be found on your SIG’s page. From your SIG’s main page, you can subscribe to SIG announcements, calendar events, and the discussion forum. Once you are subscribed to the areas, an e-mail will be sent to you every time an announcement, event, or discussion has been posted. Announcements are added frequently with important information pertaining to your SIG, such as scholarship, leadership, and meeting information. SIG events on the SIG calendar are showcased on the main page for your convenience. Simply click on an event for detailed information. About Us News Discussions ONS National Announcements
|
| Special Interest Group Newsletter July 2008 |
|
Membership Information SIG Membership Benefits
Join a Virtual Community A great way to stay connected to your SIG is to join its Virtual Community. It’s easy to do so. All you will need to do is
Subscribe to Your SIG’s Virtual Community Discussion Forum All members are encouraged to participate in their SIG’s discussion forum. This area affords the opportunity for exchange of information between members and nonmembers on topics specific to all oncology subspecialties. Once you have your log-in credentials, you are ready to subscribe to your SIG’s Virtual Community discussion forum. To do so,
Participate in Your SIG’s Virtual Community Discussion Forum
Sign Up to Receive Your SIG’s Virtual Community Announcements As an added feature, members also are able to register to receive their SIG’s announcements by e-mail.
|
| Special Interest Group Newsletter July 2008 |
|
Chemotherapy SIG Officers
Know someone who would like to receive a print copy of this newsletter? To view past newsletters, click here. ONS Membership/Leadership Team Contact Information Angie Stengel, MS, CAE, Director of Membership/Leadership Diane Scheuring, MBA, CMP, Manager of Member Services Carol DeMarco, Membership/Leadership Administrative Assistant The Oncology Nursing Society (ONS) does not assume responsibility for the opinions expressed and information provided by authors or by Special Interest Groups (SIGs). Acceptance of advertising or corporate support does not indicate or imply endorsement of the company or its products by ONS or the SIG. Web sites listed in the SIG newsletters are provided for information only. Hosts are responsible for their own content and availability. Oncology Nursing Society
|