Hematologic/Oncologic Emergencies

CHAPTER 18 Hematologic/Oncologic Emergencies





I. GENERAL STRATEGY



A. Assessment




1. Primary and secondary assessment/resuscitation (see Chapter 1)


2. Focused assessment











3. Diagnostic procedures

































F. Age-Related Considerations




1. Pediatrics








2. Geriatrics













II. SPECIFIC HEMATOLOGIC/ONCOLOGIC EMERGENCIES


The American Cancer Society estimated that 1,372,910 men and women were diagnosed with cancer and 570,280 died of cancer in 2005. It is important to identify and manage any underlying hematologic and oncologic conditions in patients experiencing a life-threatening emergency. With accurate recognition and intervention of patients with hematologic/oncologic emergencies, dramatic improvement in the quality of life can be noted. When patients who are immunocompromised, again because of hematologic or oncologic conditions, present to the emergency department, remembering to immediately assess their past medical history and acutely listening to their complaints will expedite their care. Isolating them from others with infectious conditions is a priority so as not to complicate or worsen their condition. Most patients with a compromised immune system communicate their condition, may present wearing a facemask, or may ask to be placed in a separate area. Being responsive to their needs will decrease potential complications as well as convey compassion toward their condition.



A. Disseminated Intravascular Coagulation


Disseminated intravascular coagulation (DIC) is a complex, consumptive, systemic, thrombohemorrhagic disorder involving the inappropriate and accelerated activation of the coagulation cascade that results in thrombosis and subsequent hemorrhage. It is manifested by microvascular coagulation, depletion of clotting factors, and impaired hemostasis. Normal hemostasis is maintained through a balanced system of fibrin production (clot formation) and fibrinolysis (clot breakdown) (Fig. 18-1). The process of thrombosis (abnormal clotting within a blood vessel) is initiated through disruption of the endothelial membrane and/or tissue. Fibrinolysis is the process that breaks down stable fibrin clots. As clots are rapidly lysed, fibrin degradation (split) products (FDP) are released and act as anticoagulants. During this time, the blood’s clotting factors are depleted causing abnormal bleeding. DIC occurs as a complication of, or in association with, other conditions such as sepsis. The overall management goal is to locate and treat the underlying disorder.





1. Assessment








2. Analysis: differential nursing diagnoses/collaborative problems









3. Planning and implementation/interventions
























4. Evaluation and ongoing monitoring (see Appendix B)











B. Hemophilia


Hemophilia is an inherited, sex-linked disorder that occurs most frequently in boys and men. Female family members carry the gene and pass it to their children. There are four types of hemophilia: hemophilia A, hemophilia B, hemophilia C, and von Willebrand’s disease. Hemophilia A (classic hemophilia) is a coagulation disorder caused by a variant form of factor VIII. Severity of the disease is directly related to activity level of factor VIII. Activity level less than 1% is severe and accompanied by spontaneous bleeding. Activity level of 1% to 5% is moderately severe; there is rare spontaneous bleeding but difficulty during surgery or with trauma. Patients with 5% to 10% or greater activity of factor VIII have mild disease with little risk of spontaneous bleeding, but the PTT is prolonged. Bleeding may occur anywhere but characteristically affects joints, deep muscles, urinary tract, and cranial vault (Table 18-1). Immediately following injury, bleeding is usually absent because the initial coagulation step of platelet-plug formation is not affected by hemophilia. Hemophilia B (Christmas disease) results from absence or deficiency of Factor IX. The condition is relatively rare, occurring in 1 in 100,000 persons in the United States, and is clinically indistinguishable from type A, except for treatment. Hemophilia C (Rosenthal’s syndrome) is caused by a deficiency of factor XI. Clinically, it is similar to hemophilia A, but usually has less severe bleeding. Von Willebrand’s disease (angiohemophilia) occurs in male and female patients and is less acute than hemophilia A or B. This type of hemophilia is characterized by defective platelet adherence and decreased factor VIII levels.


Table 18-1 COMMON BLEEDING MANIFESTATIONS IN PATIENTS WITH HEMOPHILIA
























Site Examples
Central nervous system Intracranial bleeding, most common cause of hemorrhagic death; subdural hematomas occur spontaneously or with minimal trauma
Hemarthroses Joints, leading to chronic atrophy if not treated aggressively
Hematomas Soft tissue or muscles, most serious near the neck (airway compromise), extremities (massive blood loss)
Hematuria Common, but not serious, and source is usually not located
Mucocutaneous tissues Uncommon, but can be spontaneous from oropharynx, gastrointestinal, epistaxis, or hemoptysis; delayed bleeding after dental extraction can be common
Pseudotumor Bone cysts that result from unresolved hematomas; usually surgically removed

Modified from Tintinalli, J. E., Kelen, G. D., & Stapczynski, J. S. (2004). Emergency medicine: A comprehensive study guide (6th ed., p 1331). New York: McGraw-Hill.




1. Assessment








2. Analysis: differential nursing diagnoses/collaborative problems


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Nov 8, 2016 | Posted by in NURSING | Comments Off on Hematologic/Oncologic Emergencies

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