Issue: 2012, Vol. 17, No. 3
Nonlinear and linear parameters of interference electromyogram in preterm infants
- Keywords
- preterm infants, non-linear and linear parameters, electromyography, neuromuscular status
- Abstarct
- The study was aimed to the investigation of neuromuscular status in the infants with lower gestational age. 10 preterm infants with gestational age 31–32 weeks were examined on the 33, 35 and 37th week. Linear and nonlinear parameters of sEMG were used to quantitize sEMG in 4 muscles (mm. bic. br. dext., tric. br. dext, tib. ant. sin., gastr. sin., altogether 120 EMG records). In preterm infants aged 33–37 weeks all linear and nonlinear sEMG parameters were significantly lower in comparison with term infants. Thus sEMG of the preterm infants was characterized by more “primitive” time-dependent structure, lower amplitude and spectrum frequency. Also unlike to term newborns in the preterm infants the dynamics of sEMG parameters was retarded. However sEMG of the preterm infants is more “complex” in comparison with the term newborns of the same post-conceptual age. It was determined that the motor system of the preterm infant was less prepared to the postnatal life due to the shorter existence in utero.