The aim of the present study is to determine the effect of Benson's relaxation technique versus music therapy on physiological parameters and stress of children with thalassemia during blood transfusion.

Thalassemia is the most common hematological disease in Egypt and the world that is transmitted by parents to their children and has no definitive cure. It means a group of hereditary blood diseases caused by defects haemoglobin (Hb) synthesis that results from an alteration in the gene responsible for producing globin chains leading to alteration in the rate of its production .

Generally in worldwide, There are about 300 million thalassemia patients, 55 million of whom live in Southeast Asia . In Egypt, beta-Thalassemia represents a major public health problem. It is reported that the carrier rate is between 9 to 10% of the population. It has been estimated that one thousand children out of 1.5 million live births are born each year suffering from thalassemia. In spite of optimal treatment being available, only a few children can afford it. Unfortunately, most children suffer from complications of blood transfusions, mainly transfusion transmitted viral infections and iron overload. Prevention by carrier detection and prenatal diagnosis is needed in populations with high incidence of the disease, such as Egypt.

The most severe form is the β-thalassemia major, which is characterized by a severe microcytic, hypochromic anemia (Cooley's anemia), whose symptoms appear usually within the first 2 years of life due to iron overload. Chronic iron overload can occur in children with beta-thalassemia as may need blood transfusions throughout their life. Iron overload can lead to growth retardation, pallor, poor appetite, and often jaundice; as well as hinder sexual development during the adolescent period and dysfunction of organs, such as heart, pancreas, and endocrine glands.

When the storage capacity of the body is exceeded, iron remains in free form. The formation of hydroxyl free radicals can be catalyzed by this free iron, leading to damage of cell membranes and protein denaturation. Ultimately, tissue damage occurs which can lead to significant levels of morbidity and mortality. Iron chelation helps prevent complications of iron overload due to repeated blood transfusion. Indeed, the most common complication of beta-thalassemia that leads to death is organ failure, in children taking regular blood transfusions and no appropriate iron chelation. Elevated liver iron concentrations (LICs) and serum ferritin levels can manifest within 1-2 years of starting regular blood transfusions. Children with thalassemia whose serum ferritin level is more than 2500 ng/mL or LIC value is more than 15 mg Fe/kg dry weight are at high risk of development of cardiac diseases such as cardiomyopathy.

Significant advances in treatment modalities and improved clinical management have led to a substantially higher life expectancy of these children. Children with thalassemia major have good survival but little is known about their psychological status. children are less able to voice their concerns and are more vulnerable than adults.

Today, with the help of existing therapies and the use of new drugs to improve iron overload control and timely initiation of treatment, the disease has become a chronic disease and life expectancy in these children has increased. However, repeated blood transfusions and long-term use of iron-chelating drugs affect other aspects of these children' lives and significantly affect their general health, mental health, and quality of life, and their families.

Thalassemia can cause different physiological, emotional, social, financial and behavioral problems that affect the life of both patients and their families, its effects are stronger particularly during school age and adolescence. It can greatly affect the sense of autonomy and mental health. Children with thalassemia major experience a lot of stress throughout their lives which constituted 18.8 %. Successive blood tests for fatigue, fatigue from successive blood transfusions, and subcutaneous injections of iron chelators, in addition to the body, irritate the souls of these patients. So much so that most of these patients also have mental disorders. It was described the fear and anxiety caused by injections in these children as the most difficult aspect of their illness.

Physiological changes occur when a person is threatened with illness, trauma, or stress. The physiological response to the stressor in the cardiovascular system increases blood pressure, changes the number of pulses and respiration, increases oxygen saturation, and increases the risk of arrhythmias. Therefore, it is very important to find an effective solution that is also cost-effective for clinical use.

Stress can be defined as any uncomfortable or agonizing emotional experience associated with changes in behavior as well as biochemical and physiological changes or in simple words we can say it is a feeling of being worried or overwhelmed. It can affect anyone regardless of age or gender of person and result in both physical as well as psychological health issues. Stress among children with thalassemia can be attributed to number of reasons like frequent treatment procedures and hospital visits, decreased life expectancy, expected complications from disease or treatment procedures and the monetary burden on parents. Also, the long painful treatment sessions such as to remove iron as iron overload being a complication of frequent blood transfusions, and an eight hour long painful procedure when injecting chelators by chelation pump is carried out, adding to the stress factors.

Unlike pharmacological treatments, complementary therapies in addition to cost effective, have no serious side effects or drug interactions, they are easy to perform, and well accepted by the patient. It is important to pay attention to additional therapies in the sense that can be performed by nurses without the need for a doctor's prescription, as well as to pave the way for nurses to gain professional independence.

Relaxation is one of the best complementary treatment strategies to decrease stress and mental disorders of the patients in order to improve their physical, psychological, and social functions. Moreover, relaxation increases the secretion of endorphins or analgesic hormone, but reduces the secretion of adrenaline hormone. In the present study, relaxation refers to one of the methods of concentration which is introduced due to its ease of learning and teaching. It was carried out in 4 stages: providing a relaxed environment, being in an appropriate physical position, concentration and creation of an inactive state. Creation of a calm environment, reduce muscle tension and focus by focusing on one word, increasing a person's attention, reducing the number of breaths and lactate in the blood can be occurred in Benson muscle relaxation due to lack of muscle stiffness, number of breaths, pulse and blood pressure are not increased and cardiac output is not increased.

So Benson relaxation therapy, as well as other relaxation techniques, that may cause a decrease in physical and psychological stress, which conceptually can decrease epinephrine, decrease cortisol, decrease glucagon and decrease thyroid hormone. All of these have a positive effect on reducing stress levels. Reduction in stress levels and the attainment of a relaxed condition in patients have positive effect on reducing stress levels. Therefore, various efforts were made to make patients comfortable and remain relaxed.

In addition to the Benson relaxation techniques described above, music therapy is another non-pharmacological methods that is believed to provide a relaxing effect on the patient and it considered to help reduce and even overcome psychological disorders and discomforts such as anxiety, stress, depression, and so on. Music therapy can be defined as the prescribed and organized use of music or its activities to change the maladaptive state in order to help clients achieve therapeutic goals. Music reduces stress by distracting and reducing a person's focus on stressful stimuli. Physicians can use it to reduce stress in children undergoing treatment or those with the possibility of further treatment. Due to the fact that therapeutic music has no side effects, in addition to this, it is easy, cheap, and safe and can be accepted by the client. Numerous studies have examined the effect of music therapy on reducing stress levels and vital signs.

Inclusion Criteria:

• preschool stage

Exclusion Criteria:

• Free from any neurological disorders.
• Free from major congenital malformations.