Care Management of Chronic Constipation-a presentation by Bereket Negassi, RN, DNP candidate.

A presentation for primary care clinicians

Management of Chronic Constipation: An Evidence-Based Approach

Constipation is among the most common gastrointestinal disorders encountered in primary care, accounting for millions of outpatient visits annually. Although often perceived as a benign complaint, chronic constipation significantly affects quality of life, increases healthcare utilization, and may signal underlying systemic disease or colorectal pathology.

Risk factors include:

• Low dietary fiber intake
• Physical inactivity
• Polypharmacy
• Depression
• Chronic kidney disease
• Hypothyroidism
• Parkinson disease
• Stroke
• Connective tissue disorders

Constipation is associated with impaired work productivity, reduced health-related quality of life, increased emergency department visits, and substantial healthcare costs. Although most cases are functional, clinicians must remain vigilant for secondary causes and alarm features that warrant further evaluation.

Understanding Chronic Constipation

Constipation is not defined solely by infrequent bowel movements. Many patients report daily bowel movements yet experience severe straining or incomplete evacuation.

Symptoms commonly include:

• Excessive straining
• Hard or lumpy stools
• Incomplete evacuation
• Sensation of anorectal blockage
• Manual maneuvers to facilitate stool passage
• Reduced stool frequency
• Excessive time spent during defecation

Because symptom perception varies considerably among patients, standardized diagnostic criteria improve consistency in diagnosis.

Rome IV Diagnostic Criteria for Functional Constipation

The Rome IV criteria provide the internationally accepted symptom-based definition of functional constipation.

Table 1. Rome IV Diagnostic Criteria

A diagnosis of functional constipation requires at least two of the symptom criteria, in the absence of structural or metabolic disease that adequately explains the symptoms.

Diagnostic Framework

Patient presents with chronic constipation
                │
                ▼
      Detailed history and examination
                │
                ▼
     Apply Rome IV diagnostic criteria
                │
     ┌──────────┴──────────┐
     │                     │
Alarm features?          No alarm features
     │                     │
     ▼                     ▼
Further investigation   Initial conservative management

Pathophysiology

Constipation is multifactorial and may result from one or more mechanisms:

Reduced Colonic Motility

Delayed propulsion increases water absorption from stool, producing hard, dry feces that are more difficult to evacuate.

Impaired Rectal Evacuation

Incoordination of the pelvic floor muscles or anal sphincter prevents effective stool passage despite adequate propulsive forces.

Altered Gut–Brain Interaction

Abnormal sensory processing may lead to heightened perception of incomplete evacuation or reduced awareness of rectal filling.

Medication Effects

Numerous medications impair intestinal motility, alter secretion, or interfere with neuromuscular function, making a medication review an essential component of every evaluation.

Causes of Chronic Constipation

                  Chronic Constipation
                          │
 ┌──────────────┬───────────────┬───────────────┐
 │              │               │
Functional   Secondary      Medication-induced
 │              │               │
 │      Endocrine disorders   Opioids
 │      Diabetes             Iron
 │      CKD                  Calcium channel blockers
 │      Hypercalcemia        Anticholinergics
 │      Neurologic disease   Antidepressants