Bowel Considerations with Spinal Cord Injury

Original Editor - Wendy Oelofse

Top Contributors - Ewa Jaraczewska, Jess Bell and Kim Jackson  

Introduction

In individuals with spinal cord injury, the pattern of bowel dysfunction varies depending on the level of injury. Complications associated with neurogenic bowel dysfunction include constipation, obstructive defecation, and faecal incontinence. Bowel dysfunction can significantly restrict a person's social activities and quality of life. This article supplies additional information on managing bowel dysfunction after spinal cord injury for the Plus course: Bladder and Bowel Considerations with Spinal Cord Injury.

Bowel Dysfunction in Spinal Cord Injury

The symptoms of neurogenic bowel dysfunction vary depending on the patient's level of injury. Vallès et al. define three neuropathological patterns in patients with a complete spinal cord injury:

• Pattern A: Patients with spinal cord injury above T7
  • Loss of voluntary control of abdominal muscles
  • Preserved spinal sacral reflexes
• Pattern B: Patients with spinal cord injury below T7
  • Voluntary control of abdominal muscles
  • Preserved sacral reflexes
• Pattern C: Patients with spinal cord injury below T7
  • Voluntary control of abdominal muscles
  • Absent sacral reflexes.

Another classification defines two types of neurogenic bowel:

• Spastic (reflexic) bowel
• Flaccid (areflexic) bowel

Spastic Bowel

• Observed in people with a spinal cord injury above T12 (upper motor neuron SCI)
• May not feel the need to have a bowel movement
• Loss or impairment of voluntary control of the external anal sphincter
• The reflex that makes the stool move out of the body is intact and can be stimulated
• The outcome is constipation, usually with faecal retention, but uncontrolled evacuation of the rectum can occur

Flaccid Bowel

• Observed in people with a spinal cord injury below T12 (lower motor neuron SCI)
• Cannot feel the need to have a bowel movement
• Loss or impairment of voluntary control of the external anal sphincter
• Loss of the bowel reflex - the rectum cannot easily empty itself, and the sphincter muscles may relax and stay open
• The outcome is usually constipation and incontinence

Figure 1. Bristol stool chart

Bristol Scale

The Bristol Scale or Bristol Stool Chart is an assessment tool used by healthcare professionals to classify a patient's stool. It helps to diagnose constipation, diarrhoea and irritable bowel syndrome.

• Type 1-2: indicate constipation
• Type 3-4: indicate ideal stool (easier to pass)
• Type 5-7: may indicate diarrhoea and urgency

Management of Bowel Dysfunction

"The overall goal of bowel management is to achieve secondary continence with regular and sufficient bowel emptying within an individually acceptable time frame and at the right time according to the patient’s agenda."

The literature does not support one specific bowel management programme for patients with spinal cord injury. A multidisciplinary team should assess each patient and choose the strategy that allows the individual to self-manage their bowel programme as much as possible.

Spastic Bowel Management

The following strategies are recommended to manage a spastic bowel.

• Bowel routine
  • empty bowel every other day or three times per week
  • the bowel routine should take no longer than one hour
• Suppository
  • bisacodyl and glycerin are the most common active ingredients in suppositories
  • oral laxatives are often part of bowel management programmes
• Digital rectal stimulation
  • a gloved finger is inserted into the anorectal canal
  • the goal is to enhance contractions of the descending colon and rectum, which helps with bowel evacuation
• Abdominal massage
  • takes about 15 minutes
  • the goal is to decrease colonic transit time, reduce abdominal distension and increase the frequency of bowel movements per week

Please watch the video below if you would like to see a demostration of abdominal massage to manage constipation.

Flaccid Bowel Mangement

The following strategies are recommended to manage a flaccid bowel.

• Bowel routine
• Digital removal
• Suppositories
• Balanced diet and the use of medication to maintain stool consistency
• Transanal irrigation
  • a transanal irrigation system includes a coated rectal balloon catheter, manual pump, and a water container
  • a balloon catheter is inserted into the rectum and warm tap water is slowly administered in volumes, usually between 500 and 1,000 mL
  • this system makes it possible for individuals with spinal cord injury to handle the irrigation procedure without needing assistance from another person
  • immobilised patients and patients with poor hand function can use this system
  • outcomes: fewer reports of constipation, less faecal incontinence, improved symptom-related quality of life, and reduced time spent on bowel management procedures
• Colostomy:
  • a viable option for some patients
  • can improve quality of life, reduce time spent on bowel care, and increase independence
  • considered a good option for individuals who spend long hours on bowel management, and when non-invasive procedures have not been effective enough
  • the most common complications include rectal discharge, stoma prolapse, further surgery to remove the remaining colon, wound healing issues and skin irritation

Possible Causes of Frequent Bowel Accidents

• Medication can interfere with a bowel routine: certain medications can cause constipation, and others can cause diarrhoea
• Illness: can lead to diet changes or changes in mobility
• Patient's activity level: being mobile helps move stool through the colon
• Hot weather: increased temperature can lead to dehydration, which results in constipation

Bowel complications

• Consistency: diarrhea
• Consistency: constipation
• Haemorrhoids/rectal bleeding
• Autonomic dysreflexia
• Skin breakdown

Assessment for Independent Use of the Toilet for Bowel Care

Hand function

• Does the patient have a sufficient hand function to perform digital interventions?
• Individuals with complete SCI above C8 will not be able to perform independent bowel care due to a lack of sufficient motor power and sensation in the fingers.
• Some individuals may achieve reliable emptying after rectal stimulant insertion without the need for digital checking or further digital stimulation.
• Patients may require additional interventions with digital checking/stimulating because no equipment is available to aid with this task.

Toilet access

• An individual may sit directly on the toilet or sit on a shower chair over the toilet.
• A shower chair can reduce the need for transfers between the wheelchair/shower chair/toilet.
• Shower chairs can be difficult to balance for self-care. Portable shower chairs are available, but it can be difficult for the patient to take a shower chair with them.
• The individual should be instructed on independent toilet transfer. Falls from the toilet are common and can cause significant injury.
• Adaptation of toilet facilities should include wheelchair accessibility, handrails and a padded/contoured toilet seat. A home visit by an occupational therapist may be required.

Skin Integrity

• All individuals with diminished or absent sensation and prolonged toileting should use a pressure-relieving seat using the toilet or a shower chair.
• Individuals with a history of skin damage and resultant scarring may not safely tolerate even a short sitting time.
• Minimising the duration of bowel care through an effective and timely bowel management programme is essential.

General Factors for Successful Bowel Program

General factors to consider when planning caregiver training:

• Patient and caregiver motivation
• Skin condition
• General health/frailty (i.e.postural hypotension, extreme old age)
• Degree of spasticity
• Sitting balance
• Home circumstances: privacy and dignity, accessibility, availability of suitable equipment

Resources

• Kurze I, Geng V, Böthig R. Guideline for the management of neurogenic bowel dysfunction in spinal cord injury/disease. Spinal Cord. 2022 May;60(5):435-443.
• Guidelines for Management of Neurogenic Bowel Dysfunction in Individuals with Central Neurological Conditions
• Spinal cord injury bowel management