Evaluation of respiratory muscle strength for patien ts in the intensive care unit
DU Ding-yuan
GAO Jing-mou
Abstract：The determination of respiratory muscle stren gth in the intensive care unit(ICU)plays a potential role in prediction of weaning outcome.An easy and accurate method would also allow investigation of re spiratory muscle weakness(RMW)in critically ill patients.Vital capacity is a non specific,volitional and relatively insensitive method for the measurement of str ength.The maximum respiratory pressures are easily measured by documenting the capacity of respiratory muscles to generate pressure.However,it also is a voliti onal test.Electrical phrenic nerve stimulation(EPNS) and magnetic phrenic nerve stimulation(MPNS) have the great advantages of being nonvolitional measures of d iaphragm strength.Since it is less painful,MPNS is more acceptable than EPNS for patients,and the MPNS overcomes some of the difficulties encountered during EPN S.Therefore,the MPNS may become an important noninvasive method for evaluation o f diaphragmatic strength in ICU in future.The RMW in the ICU depends on the vent ilatory load imposed on the respiratory muscle pump.Clinically,weaning failure m ay be due to “fatiguing process” initiated in the excessively loaded respirato ry muscles in relation to their capacity.
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Publication Date：2001-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 59 )