Acute Crit Care.  2019 Feb;34(1):1-13. 10.4266/acc.2019.00444.

Pulmonary and Physical Rehabilitation in Critically Ill Patients

• Jang MH
• Shin MJ
• Shin YB

• KMID: 2449375
• DOI: http://doi.org/10.4266/acc.2019.00444

Abstract

Some patients admitted to the intensive care unit (ICU) because of an acute illness, complicated surgery, or multiple traumas develop muscle weakness affecting the limbs and respiratory muscles during acute care in the ICU. This condition is referred to as ICU-acquired weakness (ICUAW), and can be evoked by critical illness polyneuropathy (CIP), critical illness myopathy (CIM), or critical illness polyneuromyopathy (CIPNM). ICUAW is diagnosed using the Medical Research Council (MRC) sum score based on bedside manual muscle testing in cooperative patients. The MRC sum score is the sum of the strengths of the 12 regions on both sides of the upper and lower limbs. ICUAW is diagnosed when the MRC score is less than 48 points. However, some patients require electrodiagnostic studies, such as a nerve conduction study, electromyography, and direct muscle stimulation, to differentiate between CIP and CIM. Pulmonary rehabilitation in the ICU can be divided into modalities intended to remove retained airway secretions and exercise therapies intended to improve respiratory function. Physical rehabilitation, including early mobilization, positioning, and limb exercises, attenuates the weakness that occurs during critical care. To perform mobilization in mechanically ventilated patients, pretreatment by removing secretions is necessary. It is also important to increase the strength of respiratory muscles and to perform lung recruitment to improve mobilization in patients who are weaned from the ventilator. For these reasons, pulmonary rehabilitation is important in addition to physical therapy. Early recognition of CIP, CIM, and CIPNM and early rehabilitation in the ICU might improve patients' functional recovery and outcomes.

Keyword

critical illness; intensive care units; muscular diseases; physical therapy modalities; polyneuropathies; rehabilitation

MeSH Terms

Critical Care
Critical Illness*
Early Ambulation
Electromyography
Exercise
Exercise Therapy
Extremities
Humans
Intensive Care Units
Lower Extremity
Lung
Multiple Trauma
Muscle Weakness
Muscular Diseases
Neural Conduction
Physical Therapy Modalities
Polyneuropathies
Rehabilitation*
Respiratory Muscles
Ventilators, Mechanical

Figure

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  Figure 1. Assessment of muscle strength with a handgrip dynamometer (A) and handheld dynamometry (B).

• 

  Figure 2. Sample sheet used for muscle strength testing through the Medical Research Council (MRC) sum score and the standardized 5 questions (S5Q) at Pusan National University Hospital. For values that are difficult to assess due to peripheral or central nervous lesions, amputation, or orthopedic reasons, the values of the same muscle group on the opposite side or in proximity on the ipsilateral side are extrapolated. EP: extrapolation.

• 

  Figure 3. Incentive spirometry (A) and threshold inspiratory muscle training (B) for intensive care patients.

• 

  Figure 4. Treatment modalities for airway secretions. RFC: residual functional capacity; HFO: high frequency oscillation; IPV: intrapulmonary percussive ventilation; CPAP: continuous positive airway pressure; EPAP: expiratory positive airway pressure; PEP: positive expiratory pressure; NIV: noninvasive ventilation; MIE: mechanical insufflation-exsufflation.

• 

  Figure 5. Postural drainage with high-frequency oscillation (A) and the Acapella device (B) for secretion removal.

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  Figure 6. Cycle ergometer for active and passive cycling in the intensive care unit.

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  Figure 7. (A) Upper-body aerobic exercise with fitness equipment. (B, C) Resistive training of upper extremities and bridging exercise using elastic band.

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