Please select the eligibility criteria that correspond to the clinical trial below.
Title: Study of the Benefits of Lower Limb Electrostimulation Training on Muscular Parameters and Minute Ventilation During Exercise in Severe and Deconditioned COPD Patients.
Brief Summary: This study was designed to test the following hypothesis:

The benefit of electrostimulation training will be greater than sham stimulation training in term of muscle strength and mass (muscle hypertrophy), exercise tolerance, reduction of ventilation during exercise and quality of life in COPD patients


Options:
A: Inclusion Criteria:

* COPD
* FEV1 \< 60% predicted value and FEV1/ FVC \< 70%
* 6-minute walking distance \< 400 m

Exclusion Criteria:

* Patients suffering from cardiovascular, neurological, skeletal muscle, or any other condition that could alter their capacity to perform the exercise test
* Patients taking systemic corticosteroids on a daily basis (patients having received systemic steroids for the treatment of up to two exacerbations in the preceding year and those on inhaled steroids will be allowed)
* Patients with room air PaO2 \< 60 mm Hg will be excluded.
B: Inclusion Criteria:

* 1 day of mechanical ventilation with an expectation of requiring ≥2 additional days of ICU stay in a Johns Hopkins Intensive Care Unit (ICU)

Exclusion Criteria:

* Unable to understand or speak English due to language barrier or cognitive impairment prior to admission
* Unable to independently transfer from bed to chair at baseline prior to hospital admission
* Known primary systemic neuromuscular disease (e.g. Guillian-Barre) at ICU admission
* Known intracranial process that is associated with localizing weakness (e.g. cerebral vascular accident) at ICU admission
* Transferred from another ICU outside of the Johns Hopkins system after \>4 consecutive days of mechanical ventilation
* Moribund (i.e. \>90% probability of patient mortality in the next 96 hours)
* Anticipated transfer to another ICU for care (e.g. awaiting organ transplantation and transfer to surgical ICU)
* Any pacemaker (e.g., cardiac, diaphragm) or implanted cardiac defibrillator
* Pregnancy
* Body mass index ≥35 kg/m2
* Any limitation in life support other than a sole no-CPR order
* Known or suspected malignancy in the legs
* Unable to treat or evaluate both lower extremities (e.g., bilateral amputation, bilateral skin lesions)
* ICU length of stay \>7 days prior to enrollment
C: Inclusion Criteria:

* 50-85 years of age
* Scheduled for a primary unilateral TKA
* Cognitive status that allows patients to consistently comprehend and repeat back directions regarding the details of the study

Exclusion Criteria:

* History of uncontrolled hypertension or uncontrolled diabetes
* Body mass index greater than 35 kg/m\^2
* Neurological, vascular or cardiac problems that significantly limit function
* Moderate or severe osteoarthritis or other orthopedic conditions in the non-operated lower extremity that limit function
D: Inclusion Criteria:

* all patients admitted in ICU of Evaggelismos Hospital

Exclusion Criteria:

* age \< 18 years
* pregnancy
* pre-existing neuromuscular disease (e.g. Gravis)
* connective tissue disease
* fractures or skin lesions that do not allow the implementation of EMS
* BMI \> 35 kg/m2
* brain death
* terminal disease
* length of stay \< 48 hours
* presence of pacemaker

Answer: A