What is the best course of action for a patient with acute lower left-sided abdominal pain, without nausea, vomiting, or diarrhea, considering treatment with Buscopan (hyoscine butylbromide), Ciplox (ciprofloxacin), and Pantoprazole?

Evaluation and Management of Acute Lower Left-Sided Abdominal Pain

Do not prescribe this combination of Buscopan, Ciplox (ciprofloxacin), and Pantoprazole empirically without first establishing a diagnosis through imaging, as lower left-sided abdominal pain requires urgent evaluation to exclude diverticulitis, which may need different management depending on severity. 1, 2

Immediate Diagnostic Workup Required

Before prescribing any treatment, you must obtain:

• CT scan with IV contrast is the gold standard imaging for lower left abdominal pain to diagnose or exclude diverticulitis, abscess formation, perforation, or alternative diagnoses 1, 3, 4
• Complete blood count to assess for leukocytosis and left shift (>75%) which indicates bacterial infection 1
• C-reactive protein and inflammatory markers to gauge severity of inflammation 1, 2
• Ultrasound can be used as an alternative if CT is unavailable, though it is less sensitive 1, 4

The absence of nausea, vomiting, and diarrhea does not exclude serious pathology—diverticulitis commonly presents with isolated left lower quadrant pain and tenderness without these symptoms 1, 4.

Management Based on Diagnosis

If Uncomplicated Diverticulitis is Confirmed on CT:

Antibiotics are NOT routinely needed for uncomplicated acute diverticulitis in immunocompetent patients 1. However, if you proceed with antibiotics:

• Ciprofloxacin 500mg twice daily PLUS metronidazole 500mg three times daily for 7 days maximum is the appropriate regimen (not ciprofloxacin alone) 1
• Ciprofloxacin monotherapy (Ciplox alone) is inadequate because it does not cover anaerobes, which are critical pathogens in diverticulitis 1

If Diverticular Abscess is Present:

• Small abscesses (<3cm): Antibiotics alone for 7 days may suffice 1
• Large abscesses: Percutaneous drainage combined with antibiotics for 4 days if source control is adequate 1
• Antibiotics should cover Gram-negative bacteria and anaerobes: ciprofloxacin or third-generation cephalosporin PLUS metronidazole 1

Role of Buscopan (Hyoscine Butylbromide):

Buscopan 20mg can be used for symptomatic relief of cramping pain once serious pathology requiring surgical intervention has been excluded 5, 6. It is an effective antispasmodic with:

• High affinity for muscarinic receptors in the GI tract, providing local spasmolytic effect 6, 7
• Minimal systemic absorption (<1% bioavailability), making it well-tolerated with few anticholinergic side effects 6
• Evidence from 22 RCTs showing significant improvement in abdominal pain (RR 0.74) compared to placebo 5

However, antispasmodics should NOT be used if constipation is present, as they will worsen this symptom 8, 5.

Role of Pantoprazole:

Pantoprazole has no role in treating lower left-sided abdominal pain unless there is concurrent upper GI pathology like dyspepsia 1. Proton pump inhibitors are indicated for:

• Functional dyspepsia with upper abdominal symptoms 1
• Gastroesophageal reflux disease
• Peptic ulcer disease

Lower abdominal pain from colonic pathology does not respond to acid suppression 1.

Critical Pitfalls to Avoid

• Never prescribe antibiotics empirically without imaging confirmation of infection, as uncomplicated diverticulitis may not require antibiotics at all 1
• Never use fluoroquinolone monotherapy for suspected diverticulitis—you must add anaerobic coverage with metronidazole 1
• Do not delay imaging in patients over 60 years with abdominal pain, as serious pathology including perforation, abscess, or malignancy must be excluded 1, 2, 3
• Avoid opioids for pain management, as they worsen constipation and carry dependence risks 8
• Reassess within 3-5 days if symptoms do not improve with treatment, as this indicates inadequate source control or wrong diagnosis 1, 2

Recommended Approach

1. Order CT abdomen/pelvis with IV contrast immediately 1, 3
2. If uncomplicated diverticulitis in immunocompetent patient: Consider conservative management without antibiotics, use Buscopan 20mg for pain relief 1, 5
3. If complicated diverticulitis or immunocompromised: Ciprofloxacin 500mg twice daily PLUS metronidazole 500mg three times daily for maximum 7 days 1
4. Omit pantoprazole unless upper GI symptoms are present 1
5. Ensure adequate hydration and dietary modification (clear liquids initially) 1
6. Arrange follow-up within 48-72 hours to assess response to treatment 2