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ICU-Acquired weakness: Implications for PT management. Presented By: Chris Grant SPTA. Specific Manefestations. Critical Illness Myopathy(CIM) -proximal weakness -Sensation intact Critical Illness Polyneuropathy(CIP) -reduced DTR -impaired pain, temp, vibration
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ICU-Acquired weakness: Implications for PT management Presented By: Chris Grant SPTA
Specific Manefestations • Critical Illness Myopathy(CIM) • -proximal weakness • -Sensation intact • Critical Illness Polyneuropathy(CIP) • -reduced DTR • -impaired pain, temp, vibration • Critical Illness Polyneuromyopathy(CIPM) • -Electrodiagnostic testing • -Medical Research Council sum score <48
Be aware of sedation Sedation is going to mask ICU acquired weakness A sedation vacation combined with early PT leads to shorter ICU stays.( Schweikert et al)
prognosis • Body systems, respiratory, renal, and cardiovascular systems typically resolve • Neuromuscular impairments may take 6 -12 months to resolve • In a Meta analysis by Latricio and colleagues out of 263 total pts only 68 % reported complete functional recovery. Even with “complete” recovery, foot drop or muscle atrophy was seen.
Body structure and function • A measurement of grip strength of <7kg in women and <11kg in men indicated ICU acquired weakness • Mechanical ventilation for as little as 18 hrs altered force production and muscle atrophy in the diaphragm. • Assessment of DTRs indicated because of CIP and CIM associated with altered reflexes.
Tests and measures • Several tests and measures provide insight into the patients activity limitations • The FIM and the Physical Function in the ICU test (PFIT) • -Assistance from sit to stand • -Shoulder flexion and knee extension strength • -Marching in place • -Upper extremity endurance task shoulder flexion to 90 deg
Physical intervention • Primary focus is on regaining ability to perform essential daily activities. • Intervention tailored to if patient is fully awake, physiologically stable but functionally stable, or simply deconditioned
Specific interventions • E-stim coupled with active exercises for those with COPD who were mechanically ventilated and initially unresponsive demonstrated greater strength gains and were able to transfer to a chair earlier.(Zanotti et al) • Cycle ergometry was used with unresponsive patients along with general PT interventions. This lead to greater gains in quad strength and greater 6 minute walk test distance when compared with those who received standard PT (Burtin et al)
Cycle ergometer • Passive motion applied to sedated subjects and active motion to those who were conscious • Pts received RT and cycle ergometer sessions. Median cycling average was 4 times per week at 20 minutes. • 20 consecutive minutes for sedated pts • 2 bouts of 10 minutes for conscious pts
continued • Respiratory Techniques • -Deep breathing, pursed lips, pacing of breathing, inspiratory muscle training, assisted cough, and airway clearance techniques • -These approaches have not been reported in people with ICU –acquired weakness but may prove useful to address effects of prolonged mechanical ventilation.
Order of intervention • Some therapist choose to start with easiest exercises and progress to more challenging ones • Others choose the most difficult exercises when pts have the most amount of energy and strength • The are merits to both, but there is insufficient data to determine which is more efficacious
Frequency • Dean,Perme and Chandrahekar describe an algorithm for ICU patients, not necessarily those with ICU-acquired weakness. • Most acute patients were seen for 15-30 minutes 1-2 times daily. • Sub acute patients were seen for 30-60 minutes 5-7 days per week.
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