Proper Positioning for the Prevention of Pressure Sores and Muscle Contracture

Elders who are confined to bed or wheelchair may develop complications due to decreased mobility of the limbs; for example, chest infection, pressure sores (or decubitus ulcer) and muscle contracture. All these complications are related to improper positioning. Caregivers can improve their nursing skills and assist elders in changing their positions regularly to minimize their risk of developing these complications.

I. Pressure sores:

Pressure sore is an ulcerated area of skin over bony prominences. When localized parts of the body are under continuous pressure, blood supply to that area is hindered and a pressure sore develop as a consequence.

• High risk patients:
  
  Chronically ill and bedridden
  Urinary or faecal incontinent
  Overweight or underweight
  
• Common sites:

Prone position	Lying position
Lateral position	Sitting position

• Prevention of pressure sores:

Reduce localized pressure

• Adopt proper positioning to minimize pressure over bony prominences.
• Change positions frequently and turn every 2 hours.
• Avoid friction between the body and the bed during lifting and transfer of the elderly.
• Choose the suitable type of chair and teach a chair-bound elder, if possible, to change posture every 30 min with the help of their upper limbs.
• Consult health professionals regarding use of pressure-relieving devices e.g.

Sheep Skin	Air mattress

Other measures

• Keep clothing and bed linen clean and dry.
• Avoid placing heavy objects (e.g. hot-water bottle and beddings)over the body.
• Wound dressings or bandages should not be too tight.
• Carers should keep their nails short and avoid wearing jewellery that may cause injury to the elder's skin.

Personal hygiene

• Keep skin clean and dry; change napkins frequently to decrease risk of skin infection in elders who suffer from incontinence.
• Pay attention to the skin condition and check for signs of pressure sores, seek medical advice when necessary.

Balanced diet

• Maintain a nutritious and high protein diet e.g. meat, eggs, milk and beans to keep skin healthy.

II. Muscle contracture

Muscle contracture is the result of prolonged immobility and improper positioning leading to joint stiffness and decreased range of movement (especially in patients with Stroke, Parkinson’s disease or those who are bedridden).

Prevention of muscle contracture
Adopt proper positioning and change positions every two hours

Lying
Support the affected side with pillows, elbow and fingers should be straight with palm facing upwards; Place a pillow under the knee of the affected side, keep knee slightly bent.
Lateral position
Use a pillow to keep the knees from direct contact with each other in order to prevent deformity; Use a pillow to support the affected side with elbow straight and knee slightly bent.
Sitting
Sit straight with the back well supported; Support the upper limbs with a pillow or table, place the feet on the floor or foot rest with the knee flexed at 90 degree (right angle).
Prone position
Turn the head to one side to allow normal breathing; Place both arms by each side of the head; Support the shoulders, chest and ankles with thin pillows in relaxed position.

• Exercise

  Caregivers should encourage and assist elders in performing regular active or passive stretching exercise in order to maintain good circulation, joint flexibility, and prevent muscle contracture.
  

• Others

  · Use firm pillow with a suitable thickness of approximately 5 cm to 10 cm.
  · Use firm mattress to provide adequate support.
  · Choose wheelchair with back and neck rests.
  · Choice of chair:
  - the width of seat = width of pelvis + 5cm;
  - the height of seat = 39cm to 50cm;
  - the depth of seat = the length of client’s thigh – 5cm;
  - the seat should be firm and well supported.

A suitable chair