How should a patient presenting with left groin pain, chills, diaphoresis, and elevated blood pressure be evaluated and managed emergently?

Emergency Evaluation of Left Groin Pain with Systemic Symptoms

This patient requires immediate evaluation for life-threatening vascular and intra-abdominal emergencies, with urgent imaging (CT angiography) being the priority if hemodynamically stable, or bedside ultrasound if unstable.

Immediate Assessment Priorities

Critical Differential Diagnoses to Exclude

The combination of left groin pain, chills, diaphoresis, and elevated blood pressure (153/70 mmHg) demands urgent evaluation for:

• Vascular catastrophes: Ruptured or leaking abdominal aortic aneurysm (AAA), particularly in patients >60 years, which can present with flank/groin pain radiating to genitals 1
• Acute renal colic: Characterized by abrupt onset severe unilateral flank pain radiating into groin or genitals 1
• Pelvic trauma/fracture: Even without obvious trauma history, unstable pelvic fractures can present with groin pain and systemic symptoms 2
• Intra-abdominal sepsis: Groin pain with fever/chills suggests possible abscess, perforated viscus, or other infectious process 3
• Inguinal/femoral hernia complications: Incarcerated or strangulated hernia with systemic inflammatory response

Hemodynamic Status Determination

First, establish if the patient is hemodynamically stable or unstable 2:

• Unstable indicators: Systolic BP <90 mmHg, shock index >1.0, altered mental status, signs of hypoperfusion 2
• Current BP 153/70: While elevated systolic pressure, this does not indicate instability but may represent pain response 4, 5 or hypertensive emergency if acute end-organ damage present 6
• Systemic symptoms: Chills and diaphoresis suggest either severe pain response, sepsis, or sympathetic activation from vascular emergency 3

Diagnostic Algorithm

For Hemodynamically STABLE Patients

Proceed directly to CT imaging with IV contrast 2, 7, 2:

• CT angiography of abdomen/pelvis is the gold standard for evaluating:
  • Vascular emergencies (AAA, dissection, vascular injury) 8
  • Renal/ureteral pathology causing renal colic 1
  • Intra-abdominal sources of sepsis 7
  • Pelvic fractures and associated injuries 2
• Do NOT delay for plain radiographs in stable patients—CT provides comprehensive evaluation 2

For Hemodynamically UNSTABLE Patients

Immediate bedside evaluation 2, 9:

1. E-FAST (Extended Focused Assessment with Sonography for Trauma) should be performed immediately to identify:

   • Free intraperitoneal fluid/blood 2, 9
   • Abdominal aortic aneurysm 1
   • Cardiac tamponade 2

2. Pelvic X-ray if trauma suspected and patient requires urgent intervention 2

3. Proceed to definitive intervention based on findings:

   • Operating room for ruptured AAA or hemorrhagic shock 2
   • Angiography/embolization for pelvic bleeding 2
   • Resuscitation and source control for sepsis 7

Essential Clinical Examination Elements

Vital Signs Assessment

• Tachycardia ≥110 bpm: Alarming sign suggesting sepsis, hemorrhage, or severe pain 3
• Fever ≥38°C: Combined with tachycardia predicts serious intra-abdominal pathology 3
• Respiratory rate ≥25 breaths/min: Most important predictor of severe pain (45-105% increased odds) 4
• Blood pressure: Current elevation (153/70) may represent pain response rather than hypertensive emergency unless acute end-organ damage present 6, 10

Physical Examination Focus

• Abdominal examination: Palpate for pulsatile mass (AAA), peritoneal signs, maximal tenderness location 1, 7
• Groin examination: Evaluate for hernia, lymphadenopathy, vascular bruits, femoral pulses 2
• Costovertebral angle tenderness: Supports renal colic diagnosis 1
• Signs of shock: Altered mental status, cool extremities, delayed capillary refill 2

Ancillary Testing

Urinalysis

• Perform if feasible: >80% of renal colic patients have hematuria 1
• Absence does NOT exclude renal colic: Consider alternative diagnoses but do not delay imaging 1

Laboratory Studies

• Complete blood count: Leukocytosis suggests infection/inflammation 3
• Lactate: Elevated in shock, sepsis, or mesenteric ischemia 7
• Creatinine: Baseline renal function 1
• Coagulation studies: If vascular injury or intervention anticipated 2

Immediate Management

Pain Control

Administer analgesia rapidly—target pain relief within 30 minutes 1:

• First-line: Injectable NSAID (diclofenac 75 mg IM) provides superior pain control for renal colic 1
• Alternative: Opioid (morphine) with antiemetic (cyclizine) if NSAIDs contraindicated 1
• Avoid delaying analgesia: Pain itself elevates blood pressure and heart rate 10, 4, 5

Blood Pressure Management

• Do NOT aggressively lower BP in this setting 11, 6:
  • Elevated BP likely secondary to pain 10, 4
  • Aggressive reduction may compromise perfusion if occult hemorrhage present 2
  • Only treat if hypertensive emergency with acute end-organ damage (BP ≥180/110 with symptoms) 6

Resuscitation if Unstable

• Establish large-bore IV access 2
• Initiate crystalloid resuscitation if hypotensive 2, 7
• Activate massive transfusion protocol if hemorrhagic shock suspected 2
• Broad-spectrum antibiotics if sepsis suspected 7, 3

Critical Pitfalls to Avoid

1. Assuming elevated BP is primary hypertension: Pain commonly elevates BP; treating aggressively may mask underlying pathology 10, 4

2. Delaying imaging for "routine" labs: In stable patients, proceed directly to CT 2

3. Missing AAA in older patients: Always consider in patients >60 years with abdominal/groin pain 1

4. Attributing all symptoms to renal colic: Negative urinalysis should prompt consideration of alternative diagnoses 1

5. Underestimating severity based on vital signs alone: Respiratory rate ≥25 is strongest predictor of severe pain and potential serious pathology 4

Disposition

• Trauma center transfer if severe pelvic trauma, vascular injury, or need for specialized intervention 2
• Immediate surgical consultation for suspected AAA, bowel perforation, or other surgical emergency 2, 7
• Interventional radiology consultation for potential angioembolization if pelvic bleeding 2
• Admission for sepsis, complicated renal colic, or ongoing evaluation 1, 3