A 62-year-old woman is brought to the emergency department by her family due to confusion,… — USMLE Step 2 CK

A $62$ -year-old woman is brought to the emergency department by her family due to confusion, severe right upper quadrant abdominal pain, and subjective fevers over the past $24$ hours. Her temperature is $39.4^\circ\text{C}$ ( $102.9^\circ\text{F}$ ), blood pressure is $88/54\text{ mmHg}$ , heart rate is $118/\text{min}$ , and respiratory rate is $22/\text{min}$ . Physical examination reveals marked scleral icterus and severe tenderness to palpation in the right upper quadrant with guarding. She is disoriented to time and place. Laboratory studies are notable for a leukocyte count of $18,500/\mu\text{L}$ , total bilirubin of $6.8\text{ mg/dL}$ , alkaline phosphatase of $450\text{ U/L}$ , and aspartate aminotransferase of $112\text{ U/L}$ .

Arrange the following interventions in the most appropriate chronological sequence for the optimal management of this patient.

1Administer intravenous crystalloid fluids and obtain blood cultures.
2Initiate broad-spectrum intravenous antibiotic therapy.
3Obtain a right upper quadrant ultrasound to confirm biliary ductal dilation.
4Perform an emergent endoscopic retrograde cholangiopancreatography (ERCP).
5Perform an elective laparoscopic cholecystectomy.

Cevap

The correct sequence is: initial fluid resuscitation and blood cultures, followed by intravenous antibiotics, diagnostic confirmation with a right upper quadrant ultrasound, emergent biliary decompression via ERCP, and finally, a delayed elective cholecystectomy.

This patient presents with Reynolds pentad (fever, jaundice, right upper quadrant pain, hypotension, and altered mental status), indicating severe acute ascending cholangitis. The optimal algorithmic approach begins with stabilizing the patient's hemodynamics using intravenous fluids while simultaneously obtaining blood cultures. Once cultures are secured, empiric broad-spectrum intravenous antibiotics are immediately initiated. Following initial medical stabilization, a right upper quadrant ultrasound is obtained to rapidly and non-invasively confirm common bile duct dilation. With the diagnosis secured, emergent ERCP is performed for life-saving biliary decompression and stone extraction. Once the patient has fully recovered from the acute systemic inflammatory response (often days to weeks later), an elective laparoscopic cholecystectomy is performed to prevent recurrent complications.

Adım Adım Çözüm

Recognize the clinical presentation of acute severe ascending cholangitis (Reynolds pentad) and prioritize initial resuscitation.

The patient requires immediate intravenous crystalloid fluids to manage hypotension, and blood cultures must be drawn prior to administering antimicrobials.

Septic shock from biliary infection is rapidly fatal; hemodynamic stabilization and proper microbiologic sampling are the foundational first steps.

Administer broad-spectrum intravenous antibiotics.

Systemic antimicrobial therapy begins to control the ascending infection.

Early antibiotic administration in sepsis reduces mortality, but it must strictly follow the collection of blood cultures to avoid sterilizing the samples.

Perform a right upper quadrant ultrasound.

Confirmation of common bile duct dilation and possible visualization of choledocholithiasis.

Before committing a hemodynamically unstable patient to an invasive procedure, a rapid, non-invasive imaging modality must verify the presence of mechanical biliary obstruction.

Perform an emergent endoscopic retrograde cholangiopancreatography (ERCP).

The obstructing gallstone is removed, and biliary flow is restored.

Antibiotics alone cannot cure ascending cholangitis if the biliary tree remains obstructed; emergent decompression is life-saving in severe cases.

Schedule an elective laparoscopic cholecystectomy.

Removal of the primary source of the gallstones.

Cholecystectomy is necessary to prevent future episodes but is contraindicated during the acute phase of severe cholangitis due to prohibitively high surgical mortality.

Anahtar Kavram

The management of severe acute ascending cholangitis (Reynolds pentad) follows a strict sequence: hemodynamic stabilization and cultures, empiric broad-spectrum antibiotics, non-invasive imaging to confirm obstruction, emergent biliary decompression (e.g., ERCP), and delayed elective cholecystectomy.

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