The present investigation is dedicated to the effects of the Medical Resonance Therapy Music^® on basic hemodynamic parameters in children with transient arterial hypertension due to disturbances of the autonomic nervous system with different degrees of initial sym­pa­theti­coto­nia.

After the nuclear accident of Chernobyl many children developed a blood pressure too high for their age norm. Having already observed a decrease in too high blood pressure in women during pregnancy we studied the ef­fects of the Medical Resonance Therapy Mu­sic^® (MRT-Music) on such children – with very positive results: the treatment with the music preparations demonstrated a clear sym­pa­tholy­thic effect and lead the disturbed hemo­dy­namic state back to its healthy age norm.


Patients and methods

Under investigation were sixty children with different degrees of initial sympatheticotonia in the children's hospital No. 3 in Minsk.
Two groups were examined: one group of 32 children with an absolute sympatheticotonia, in which 75%-100% of the initial autonomic tonus were built by the sympathetic part of the autonomic nervous system (ANS), and a sec­ond group of 28 children with a relative sym­pa­theti­coto­nia, in which 50%-75% of the initial autonomic tonus were build by the sym­pa­thetic part of the ANS. The initial tonus of the ANS was determined according to the index of Wein.

The MRT-Music^® treatments were performed twice a day at fixed times for three weeks.

During the treatment the patients listened to music preparations of the Medical Resonance Therapy Music^® with head- phones. The av­er­age time of a treatment was 20-30 minutes under conditions suited to a maximum of re­laxa­tion: a good light and noise isolation was guaranteed and the children listened to the MRT-Music^® in a comfortable, half lying po­si­tion.

Before and after the treatment the following basic hemodynamic parameters were meas­ured:

1. breath frequency (bf)
2. heart frequency (hf)
3. systolic pressure (sp)
4. diastolic pressure (dp)
5. mean arterial pressure (map)
6. pulse pressure (pp)

These measurements were taken using sym­path­o­ma­nome­ter according to the Korotkov method under consideration of the rec­om­men­da­tions of the World Health Organization (1986).
Other parameters under consideration were the minute volume of blood circulation (mvbc), the index of vegetative equivalence according to Hildebrandt (ih) as well as the vegetative index according to Kerdo (kerdo).
The treatments were given according to the recommendations of Wein for the in­ves­ti­ga­tion of the autonomic nervous system.

The children of the first group showed higher parameters in breath and heart frequency as well as in diastolic and mean arterial pressure than the children in the second group, but they showed lower values in the systolic pres-

Table 3 shows that breath frequency, systolic and diastolic arterial pressure in the children of the first group was lower than in the second group. Heart frequency and mean arterial pressure had balanced, the minute volume of blood circulation had lowered very sig­nifi­cantly, the Hildebrandt index had normalized.

In comparing the effects of the MRT-Music^® treatments the greater changes in the group with absolute sympatheticotonia were evident, which may be explained by the normalization of the initially too high values.

1. The treatments with the Medical Reso­nance Therapy Music^® have a clear sympatholythic effect and lead the dis­turbed hemodynamic state of the child back to its healthy age norm.
   
   
2. The greater effects of MRT-Music^® treat­ments were seen in children with an ini­tial absolute sympatheticotonia.
   
   

1. The Medical Resonance Therapy Music^® can be recommended as a com­ple­men­tary treatment to the traditional therapy for high blood pressure due to dis­tur­bances of the autonomic nervous sys­tem.
   
   
2. While performing the study no harming side effects or strong indications against the MRT-Music^® were reg­is­tered.