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Acute and chronic graft-versus-host disease (GvHD) is a major cause of morbidity and mortality in patients who undergo allogeneic haematopoietic cell transplantation (HCT) and affects approximately 30–40% of recipients. Its diagnosis is complicated, and staging of the disease varies dependent upon the transplant centre involved. Standardisation through the use of National Institute of Health (NIH) guidelines helps clinicians diagnose and treat their patients more effectively. For the majority of patients who go on to develop GvHD, corticosteroids remain the first-line treatment for both acute and chronic GvHD. Recipients that are refractory to systemic steroids have a plethora of second- and third-line options available to them. A ‘standard of care’ approach has not yet become agreed globally due to poor evidence from small and limited randomised control trials. Supportive care is paramount, and the nurse is often at the centre of the patients care and in the best position to guide and advise the patient and family through this often long-term complication.

The treatment of relapsed disease remains challenging, and it is well accepted that concept of allogeneic HSCT relies upon both the conditioning or preparative regimen used for the recipient and the graft versus malignancy (GvM) or leukaemia (GvL) effect provided by the donor T cells and NK cells. Strategies which involve harnessing this effect are crucial to success and need to be exploited and refined to improve outcome. Further research is required to identify new strategies and therapies to improve the outlook for patients who relapse post-HSCT.

The nursing challenges following relapse are immense; the psychological support required is complex and largely falls to the nurse to coordinate and deliver regardless of the selected treatment approach.

Engraftment following HSCT is an essential goal for sustained long-term and effective hematopoiesis. It’s the most important criteria for a better overall survival. However, stem cell engraftment may be accompanied with a clinical condition known as engraftment syndrome (ES) that could have a devastating outcome. Nurses caring for HSCT recipients must be aware of ES symptoms in order to intervene quickly and appropriately. On the other hand, graft failure (GF) is a major complication and is associated with a dismal prognosis. It is classically divided into primary or secondary graft failure. The risk factors associated with GF may be related to characteristics of the graft, the patient, the donor, or the transplant procedure. The conditions that are associated with an increased occurrence of GF and the available treatment options will be thoroughly discussed in the chapter along with the nursing considerations.

Allogeneic stem cell transplantation was successfully performed in 1968, and its use has grown significantly over the past five decades with the total number now exceeding 1 million patients. HSCT is a curative treatment for many haematological cancers and other disorders. Almost 40,000 HSCT procedures are performed Europe-wide per annum (Passweg et al., Bone Marrow Transplant, 2016), and with a 5-year survival around 50% (Friedrichs, Lancet Oncol 11(4):331–338, 2010), the number of transplant recipients achieving ‘long-term survival’ and with late effects directly related to their treatment (Majhail et al., Hematol oncol Stem Cell Ther 5(1):1–30, 2012) is increasing. This growth in survivors is the result of improvements in transplant knowledge and expertise, refinements to conditioning regimes, developments in supportive care and increased numbers of procedures due to broadening transplant indications.

The most common cause of death after transplant is relapsed disease. Yet, even without disease relapse, long-term survival is complex for many as other causes of mortality such as graft versus host disease (GvHD), infection, second malignancy, respiratory disease and cardiovascular disease (CVD) (Savani et al., 2011) prove difficult to address.

Recovery post-HSCT is challenging, lasting several months to years. These individuals are susceptible to the development of post-treatment physical and psychological sequelae years to decades after completion of treatment leading to a reduced life expectancy with greater morbidity when compared to an age-adjusted population (Socié et al., N Engl J Med 341:14–21, 1999). Survivors with late effects experience significantly poorer physical and mental health, report more unmet needs for care and have significantly greater use of health services compared with survivors without late effects (Treanor et al., Psychooncology 22(11):2428–2435, 2013).

Furthermore, as the number of survivors continues to grow, their long-term health problems and subsequent needs demand increasing attention.

The unpredictable, complex and multifactorial nature of these long-term and late effects in HSCT survivors means that patients require regular life-long assessment guided by rigorous protocols. However, it is important to remember that even using standardised protocols, these should be different for adults and children and the resulting care must be tailored to the needs of the individual survivor. And finally, further consideration is needed for the growing number of young people and adult survivors in long-term follow-up who have been treated in childhood and transitioned into adult long-term follow-up care.

Nursing research is a systematic inquiry that uses disciplined methods to answer questions or solve problems in order to expand the knowledge base within a given field. There are various issues to address in order to complete a successful study. The aim of this chapter is to provide the reader with an overview of the key topics for consideration and give guidance as to where to go for further information. Providing best care to patients undergoing HSCT is the moral and ethical duty of all nurses. As a consequence, awareness of, and involvement in, research as the vehicle to ensuring best practice is also our moral duty.