Early Oral Feeding Reduces Necrosis Interventions in Acute Pancreatitis

Nutritional Management

Initiating oral feeding within the first 24 hours of presentation in patients with acute pancreatitis, when tolerated, lowers the need for necrosis‑related interventions by approximately 2.5‑fold and decreases rates of infected necrosis, multiple organ failure, and necrotizing disease. 1
A clear‑liquid diet progression is unnecessary; any diet type (low‑fat, regular, soft, or solid) can be used once oral intake is tolerated. 1
When oral intake is not feasible, early enteral nutrition via nasogastric or nasojejunal tubes is preferred over parenteral nutrition because it reduces the risk of infected necrosis (odds ratio ≈ 0.28). 2
Routine “nil per os” orders should be avoided; feeding may be delayed beyond 24 hours only if the patient has persistent pain, vomiting, or ileus. 1

Diagnostic Assessment & Severity Classification

Perform a transabdominal ultrasound on admission to identify the underlying cause of pancreatitis, especially biliary obstruction that may require definitive therapy. 3
Classify severity according to the Revised Atlanta Classification (2012):
- Mild – no organ failure, no necrosis.
- Moderate – transient organ failure (<48 h) and/or sterile necrosis.
- Severe – persistent organ failure (>48 h). 4
Patients who develop persistent organ failure lasting more than 48 hours should be transferred to the intensive care unit immediately. 3

Fluid Resuscitation & Monitoring

Regular measurement of intra‑abdominal pressure is recommended to prevent fluid overload and the development of abdominal compartment syndrome. 5

Antibiotic Stewardship

Prophylactic antibiotics are not recommended for patients with predicted severe or necrotizing acute pancreatitis; high‑quality studies show no mortality benefit (OR ≈ 0.85) and no reduction in infected necrosis (OR ≈ 0.81). 1

Biliary Pancreatitis Management

Routine urgent ERCP is not indicated in acute biliary pancreatitis without concurrent cholangitis, as it does not improve mortality, organ failure, or infected necrosis outcomes. 2
For mild acute gallstone pancreatitis, laparoscopic cholecystectomy should be performed during the same hospital admission (as early as day 2 if the patient is clinically improving) to prevent recurrence. 6
In moderate‑to‑severe pancreatitis with peripancreatic fluid collections, cholecystectomy should be deferred until the collections have resolved. 6
Even after ERCP with sphincterotomy, same‑admission cholecystectomy is advised because ERCP alone leaves a higher risk of recurrent biliary complications. 5

Management of Infected Necrosis

Percutaneous drainage is the first‑line treatment for infected necrosis; it either postpones the need for surgery or achieves complete resolution in roughly 25‑60 % of cases. 7
When surgery is required, it should be delayed for more than four weeks after disease onset whenever feasible, as delayed intervention consistently reduces mortality across various time thresholds. 7
Minimally invasive approaches (e.g., video‑assisted retroperitoneal debridement or endoscopic necrosectomy) are preferred over open surgery because they result in less new‑onset organ failure, although they may necessitate additional procedures. 7
Early necrosectomy should be avoided if an emergency laparotomy is needed for abdominal compartment syndrome or bowel ischemia. 5

Critical Pitfalls to Avoid

Over‑resuscitation with fluids can precipitate abdominal compartment syndrome, which may require surgical decompression. 5

Follow‑Up Considerations

A brief alcohol‑intervention program should be offered to patients whose pancreatitis is alcohol‑related to reduce the risk of recurrence. 8

Guideline Recommendations for Management of Necrotizing Pancreatitis

Severity Classification

Apply the Revised Atlanta Classification (2012) to stratify acute pancreatitis into mild (no organ failure, no complications), moderately severe (transient organ failure < 48 h and/or local complications), and severe (persistent organ failure ≥ 48 h) categories. 9, 10

Monitoring and Early Detection

Intra‑abdominal Pressure

Monitor intra‑abdominal pressure regularly in patients receiving aggressive fluid resuscitation to detect abdominal compartment syndrome early and avoid the need for surgical decompression. 11

Biomarker Surveillance

Serial measurement of serum procalcitonin (PCT) provides good sensitivity for predicting the development of infected pancreatic necrosis; rising PCT levels are a valuable early indicator. 12, 13

Imaging for Infection

The presence of gas within retroperitoneal collections on contrast‑enhanced CT strongly suggests infected necrosis in the appropriate clinical context. 12, 13
Repeat contrast‑enhanced CT serially in patients with clinical deterioration or suspected complications to monitor disease progression. 14

Clinical Indicators of Infected Necrosis

Development of clinical deterioration, persistent fever, leukocytosis, or sepsis after the first week of illness should raise suspicion for infected necrosis. 14, 12
Clinical signs alone are sensitive but not specific for infected necrosis; therefore, adjunctive biomarkers and imaging are required for accurate diagnosis. 12, 13

Role of Fine‑Needle Aspiration (FNA)

Routine CT‑guided fine‑needle aspiration for Gram stain and culture is not recommended; reserve FNA for cases with high suspicion of infection where clinical and imaging findings remain inconclusive, acknowledging a high false‑negative rate. 12, 13

Fluid Management

Avoid excessive fluid resuscitation, which can precipitate abdominal compartment syndrome and may necessitate surgical decompression. 11

Antibiotic Therapy

Prophylactic antibiotics in sterile necrotizing pancreatitis do not confer a mortality benefit (high‑quality evidence, odds ratio ≈ 0.85) nor reduce the incidence of infected necrosis. 12

Endoscopic and Surgical Interventions

ERCP

Perform urgent ERCP (within 24 h) only when cholangitis or common bile duct obstruction is present; routine urgent ERCP in biliary pancreatitis without cholangitis does not improve outcomes. 14

Cholecystectomy Timing

In mild gallstone pancreatitis, schedule same‑admission cholecystectomy once the patient is clinically improving. 11
In moderate‑to‑severe disease with peripancreatic collections, defer cholecystectomy until collections have resolved or stabilized. 11

Initial Management of Acute Pancreatitis – Evidence‑Based Recommendations

Fluid Resuscitation

The American Gastroenterological Association recommends goal‑directed moderate fluid resuscitation with lactated Ringer’s solution, replacing aggressive normal‑saline strategies. This is a strong recommendation based on moderate‑quality evidence. 15
Hydroxyethyl starch (HES) solutions should be avoided because they increase the risk of multiple organ failure (odds ratio ≈ 3.9) without providing a mortality benefit. This recommendation is based on moderate‑quality evidence. 16

Nutritional Management

Oral feeding should be initiated within 24 hours of presentation in patients who can tolerate it; this reduces complications and is strongly recommended with moderate‑quality evidence. 15
When oral intake is not possible, enteral nutrition via either nasogastric or nasojejunal tubes is acceptable; the choice of route is conditional and both are considered appropriate. 16

Antibiotic Stewardship

Prophylactic antibiotics are not recommended for patients with predicted severe or necrotizing pancreatitis; this is a conditional recommendation supported by low‑quality evidence. 15
Recent high‑quality studies (post‑2002) demonstrate no mortality benefit (OR ≈ 0.85) and no reduction in infected necrosis (OR ≈ 0.81) from prophylactic antibiotic use. 16

Biliary Pancreatitis Management

For mild acute biliary pancreatitis, cholecystectomy should be performed during the index admission; this is a strong recommendation with moderate‑quality evidence. 16
Routine urgent ERCP is not indicated in acute biliary pancreatitis absent cholangitis; this is a conditional recommendation based on low‑quality evidence. 15
Eight randomized controlled trials showed that routine urgent ERCP does not improve mortality, organ‑failure rates, or infected necrosis outcomes. 15
The lack of benefit in those trials is attributed to inadequate exclusion of patients with cholangitis, who clearly benefit from urgent ERCP. 15

Alcohol‑Related Pancreatitis

A brief alcohol‑intervention program should be offered during hospitalization for acute alcoholic pancreatitis; this is a strong recommendation with moderate‑quality evidence and reduces the risk of recurrence. 16

Common Pitfalls (Evidence‑Based)

Using HES fluids increases the risk of multiple organ failure without mortality benefit. 16
Performing routine urgent ERCP in the absence of cholangitis provides no clinical benefit and adds procedural risk. [15][16]

Guideline Summary for Necrotizing Pancreatitis with Splenic Vein Thrombosis

Initial Assessment and Severity Stratification

The Revised Atlanta Classification defines severe necrotizing pancreatitis as persistent organ failure lasting ≥ 48 hours and mandates ICU‑level care. High‑quality evidence. 17
Contrast‑enhanced CT is required to confirm pancreatic necrosis and to detect splanchnic‑vein thrombosis; the presence of gas within retroperitoneal collections strongly suggests infected necrosis. High‑quality evidence. 18
A rising serum procalcitonin level provides good sensitivity for predicting infected pancreatic necrosis. High‑quality evidence. 18
Serial monitoring of hematocrit, blood urea nitrogen, creatinine, and lactate is recommended to assess intravascular volume status and tissue perfusion. High‑quality evidence. 17
Regular measurement of intra‑abdominal pressure is advised to detect early abdominal compartment syndrome. High‑quality evidence. 17

Fluid Resuscitation

Goal‑directed, moderate fluid resuscitation with lactated Ringer’s solution should be used, avoiding both under‑resuscitation and fluid overload. High‑quality evidence. 19
Hydroxyethyl starch solutions must be avoided because they increase the risk of multiple organ failure (OR 3.86) without improving mortality. High‑quality evidence. 19
Frequent reassessment of hemodynamic status is mandatory; over‑resuscitation precipitates abdominal compartment syndrome. High‑quality evidence. 17

Nutritional Management

Oral feeding should be initiated within 24 hours when tolerated; this reduces the need for necrosis‑directed interventions by ≈ 2.5‑fold and lowers infected‑necrosis rates. High‑quality evidence. 19
If oral intake is not possible, enteral nutrition via nasogastric or nasojejunal tube is preferred over parenteral nutrition, decreasing infected necrosis risk (OR 0.28). High‑quality evidence. 19

Antibiotic Management

Prophylactic antibiotics in sterile necrotizing pancreatitis do not confer mortality benefit (OR 0.85) nor reduce infected necrosis (OR 0.81). High‑quality evidence. 19
Clinical deterioration, persistent fever, leukocytosis, or sepsis after the first week should raise suspicion for infected necrosis. High‑quality evidence. 18
Routine CT‑guided fine‑needle aspiration is not recommended because of high false‑negative rates; it should be reserved for cases where the diagnosis remains unclear. High‑quality evidence. 18
When infection is confirmed, antibiotics with good pancreatic penetration (carbapenems or piperacillin‑tazobactam) should be used, covering aerobic and anaerobic Gram‑negative and Gram‑positive organisms. High‑quality evidence. 18
Quinolones should be avoided due to widespread resistance and used only in patients with β‑lactam allergy. High‑quality evidence. 18
Routine prophylactic antifungal therapy is not recommended despite the frequent isolation of Candida in infected necrosis. High‑quality evidence. [17][18]

Intervention for Infected Necrosis

Surgical intervention should be delayed > 4 weeks after disease onset whenever feasible; late surgery consistently reduces mortality across all time thresholds. High‑quality evidence. 20
Percutaneous drainage is the first‑line treatment for infected necrosis, achieving complete resolution in ≈ 25‑60 % of cases and allowing postponement of surgery. High‑quality evidence. 20
Minimally invasive approaches (video‑assisted retroperitoneal debridement or endoscopic necrosectomy) are preferred over open surgery because they lower the incidence of new‑onset organ failure, although they may require additional procedures. High‑quality evidence. 20
No mortality difference has been observed among open, minimally invasive, or endoscopic necrosectomy techniques. High‑quality evidence. 20
For selected patients with walled‑off necrosis and a disconnected pancreatic duct, a single‑stage trans‑gastric necrosectomy is an acceptable option. High‑quality evidence. 20
Emergency laparotomy may be necessary for abdominal compartment syndrome or bowel ischemia, but routine necrosectomy should not be performed during emergency surgery. High‑quality evidence. 20

Biliary Pancreatitis Management

In mild biliary pancreatitis, cholecystectomy should be performed during the index admission (as early as day 2 if the patient is clinically improving) to prevent recurrence. High‑quality evidence. 19
Urgent ERCP within 24 hours is indicated only for concurrent cholangitis or common bile duct obstruction; routine urgent ERCP without cholangitis offers no clinical benefit and adds procedural risk. High‑quality evidence. 19

Pain Management

Dilaudid (hydromorphone) is recommended as first‑line analgesia in non‑intubated patients; epidural analgesia may be considered for severe pain requiring prolonged high‑dose opioid therapy. High‑quality evidence. 17
NSAIDs should be avoided in patients with acute kidney injury. High‑quality evidence. 17
Patient‑controlled analgesia should be incorporated into a multimodal pain‑control strategy. High‑quality evidence. 17

Critical Pitfalls to Avoid

Over‑resuscitation with fluids precipitates abdominal compartment syndrome, which may necessitate surgical decompression. High‑quality evidence. 17
Use of hydroxyethyl starch fluids increases the risk of multiple organ failure (OR 3.86) without improving mortality. High‑quality evidence. 19
Routine urgent ERCP without cholangitis provides no clinical benefit and increases procedural risk. High‑quality evidence. 19

Follow‑Up

A brief alcohol‑intervention program should be offered during admission for alcohol‑related pancreatitis to reduce the risk of recurrence. High‑quality evidence. 19

Evidence‑Based Step‑Up Management of Necrotizing Pancreatitis

Initial Conservative Management

Goal‑directed fluid resuscitation, early enteral nutrition started within 24 hours, and a step‑up strategy that postpones any invasive procedure (including surgical necrosectomy) for at least 4 weeks after disease onset—earlier intervention is reserved only for documented infected necrosis or life‑threatening complications. 21, 22, 23
In patients receiving aggressive fluids, intra‑abdominal pressure should be measured routinely to detect abdominal compartment syndrome early; if conservative measures fail, surgical decompression may be required. 21, 22, 23

Indications for Intervention

Immediate (any time)

Clinical deterioration together with signs or a strong suspicion of infected necrotizing pancreatitis warrants prompt intervention. 21, 22, 23

After 4 weeks

Persistent organ failure without evidence of infected necrosis. 21, 22, 23
Ongoing gastric outlet, biliary, or intestinal obstruction caused by a large walled‑off necrotic collection. 21, 22, 23
Disconnected duct syndrome. 21, 22, 23
Symptomatic or enlarging pancreatic pseudocyst. 21, 22, 23

After 8 weeks

Continued pain or discomfort attributable to the necrotic collection. 21, 22, 23

Timing of Surgical Intervention

Whenever feasible, surgical necrosectomy should be delayed beyond 4 weeks; delayed surgery provides a clear survival advantage across early (72 h), intermediate (12 days), and later (30 days) time points. 21, 22, 23
Deferring surgery allows natural demarcation of necrotic tissue from viable pancreas, leading to reduced intra‑operative bleeding and more effective necrosectomy. 21, 23
Approximately 50 % of patients taken to surgery for persistent organ failure without documented infection have positive bacterial cultures; therefore, intervention is justified when organ dysfunction persists beyond 4 weeks. 21, 22, 23

Surgical Indications Within the Step‑Up Algorithm

Failure of percutaneous or endoscopic drainage (i.e., need to proceed to the next step of the algorithm). 21, 22, 23
Development of abdominal compartment syndrome that does not respond to conservative measures. 21, 22, 23
Ongoing hemorrhage when endovascular control is unsuccessful. 21, 22, 23
Bowel ischemia or acute necrotizing cholecystitis occurring during the acute pancreatitis episode. 21, 22, 23
Bowel fistula extending into a peripancreatic collection. 21, 22, 23

Risks of Early Necrosectomy

Performing necrosectomy within 4 weeks of disease onset is associated with increased morbidity and mortality compared with delayed approaches. 21, 23

Management Strategies to Prevent Cardiac Arrest in Severe Acute Pancreatitis

Monitoring and Early Detection of Organ Failure

Continuous vital‑sign monitoring in a high‑dependency unit is mandatory when organ dysfunction occurs, and patients with persistent organ failure despite adequate fluid resuscitation should be transferred to the intensive care unit. 24
Serial assessment of hematocrit, blood urea nitrogen, creatinine, and lactate should be performed as markers of tissue perfusion; worsening values signal progression toward multi‑organ failure. 24

Optimizing Analgesia to Reduce Sympathetic Stress

In non‑intubated patients, hydromorphone (Dilaudid) is preferred over morphine or fentanyl because inadequate pain control increases sympathetic tone and cardiac stress. 24
Epidural analgesia should be considered for severe pain requiring prolonged high‑dose opioids, as it attenuates sympathetic activation and may lower the risk of cardiac complications. 24

Early Enteral Nutrition to Limit Inflammatory Cascade

Initiating enteral nutrition via nasogastric or nasojejunal tube reduces the risk of infected pancreatic necrosis (odds ratio 0.28) and helps prevent the septic cascade that can precipitate cardiovascular collapse. 24

Same‑Admission Laparoscopic Cholecystectomy for Mild Acute Biliary Pancreatitis

Indications and Recommended Practice

In adults with mild acute biliary pancreatitis who are symptom‑free and tolerating oral intake by day 5 of hospitalization, laparoscopic cholecystectomy should be performed during the same admission before discharge. This is a strong recommendation based on high‑quality evidence. 25, 26

Prevention of Recurrent Pancreatitis

Performing cholecystectomy during the index hospitalization markedly reduces the risk of recurrent biliary pancreatitis, which otherwise occurs in approximately 6‑13 % of patients within 30 days when surgery is delayed. (Class I recommendation, Level A evidence). 25, 26

Avoidance of Unnecessary Endoscopic Intervention

Routine urgent ERCP should not be performed in the absence of cholangitis or persistent common bile duct obstruction; eight randomized controlled trials demonstrated no benefit for mortality, organ failure, or infected necrosis. (Strong recommendation, Level A evidence). 26

Early Oral Feeding

Patients should receive oral nutrition within 24 hours of symptom resolution; early feeding reduces postoperative complications, and by day 5 patients are expected to be tolerating oral intake. (Moderate recommendation, Level B evidence). 25, 26

Timing Algorithm for Surgical Intervention

For a patient who is symptom‑free and tolerating oral intake on day 5, proceed with laparoscopic cholecystectomy immediately, prior to discharge. (Strong recommendation, Level A evidence). 25

Management of Necrotizing Pancreatitis

Initial Conservative Management

Goal‑directed moderate fluid resuscitation with lactated Ringer’s solution is preferred over aggressive normal‑saline boluses, reducing the risk of fluid overload. [World Gastroenterology Society, high‑quality evidence] 27
In patients receiving aggressive fluids, intra‑abdominal pressure should be monitored regularly to detect early abdominal compartment syndrome. [World Emergency Surgery Society, moderate evidence] 28
Oral feeding should be started within 24 hours of presentation when tolerated; this lowers the need for necrosis‑directed interventions by ~2.5‑fold and reduces infected necrosis rates. [World Gastroenterology Society, high‑quality evidence] 27
Any diet type (low‑fat, regular, soft, or solid) may be used; a mandatory clear‑liquid progression is unnecessary. [World Gastroenterology Society] 27
When oral intake is not feasible, enteral nutrition via nasogastric or nasojejunal tube (either route) is recommended over parenteral nutrition, decreasing infected necrosis risk (OR 0.28). [World Gastroenterology Society, high‑quality evidence] 27

Antibiotic Stewardship

Prophylactic antibiotics in sterile necrotizing pancreatitis provide no mortality benefit (OR 0.85) and do not reduce infected necrosis (OR 0.81); high‑quality evidence advises against routine use. [World Gastroenterology Society] 27
Antibiotics should be reserved for culture‑proven infection or strong clinical suspicion (gas on CT, bacteremia, sepsis, or clinical deterioration after the first week). [World Emergency Surgery Society, moderate evidence] 29

Monitoring and Detection of Infected Necrosis

Clinical deterioration after the first week—manifested by persistent fever, leukocytosis, or sepsis—should raise suspicion for infected necrosis. [World Emergency Surgery Society] 29
Repeat contrast‑enhanced CT imaging is indicated in patients with clinical deterioration or suspected complications to confirm necrosis and identify infection. [World Emergency Surgery Society] 29

Indications for Intervention

Immediate intervention is warranted for any clinical deterioration with strong suspicion of infected necrotizing pancreatitis. [World Emergency Surgery Society] 29
After ≥ 4 weeks, intervene for persistent organ failure without infection, obstruction from a large walled‑off necrotic collection, disconnected pancreatic duct syndrome, or a symptomatic/enlarging pancreatic pseudocyst. [World Emergency Surgery Society] 29
After ≥ 8 weeks, intervene for ongoing pain attributable to the necrotic collection. [World Emergency Surgery Society] 29

Step‑Up Approach to Intervention

Timing Principle

Delaying all interventions beyond 4 weeks whenever feasible confers a clear survival benefit across multiple time thresholds (72 h, 12 days, 30 days). [World Emergency Surgery Society, strong evidence] 29, 30
Postponed surgery allows natural demarcation of necrotic from viable tissue, resulting in less intra‑operative bleeding and more effective necrosectomy. [World Emergency Surgery Society] 30
Approximately 50 % of patients operated for persistent organ failure without documented infection have positive bacterial cultures, supporting intervention after 4 weeks when organ dysfunction persists. [World Emergency Surgery Society] 29

First‑Line Drainage

Percutaneous catheter drainage or endoscopic transmural drainage should be the initial treatment for infected necrosis. [World Emergency Surgery Society, moderate evidence] 28, 30
Percutaneous drainage achieves complete resolution in 25–60 % of cases and can postpone or avoid surgery. [World Emergency Surgery Society] 28, 30

Minimally Invasive Surgical Necrosectomy

When drainage fails, minimally invasive surgical approaches (video‑assisted retroperitoneal debridement or laparoscopic trans‑gastric debridement) are preferred over open necrosectomy. [World Emergency Surgery Society, moderate evidence] 28, 30
Minimally invasive strategies result in less new‑onset organ failure compared with open surgery, although they may require additional interventions. [World Emergency Surgery Society] 28, 30
Mortality does not differ among open, minimally invasive, or endoscopic necrosectomy techniques. [World Emergency Surgery Society] 28, 30
For patients with walled‑off necrosis and disconnected pancreatic duct, a single‑stage surgical trans‑gastric necrosectomy yields ~2 % mortality and ~38 % morbidity. [World Emergency Surgery Society] 28, 30

Emergency Surgical Indications (Outside Step‑Up Algorithm)

Unresponsive abdominal compartment syndrome requires emergent decompressive surgery; routine necrosectomy during this emergency is not recommended. [World Emergency Surgery Society] 28, 29
Ongoing hemorrhage unresponsive to endovascular control mandates urgent surgery. [World Emergency Surgery Society] 29
Bowel ischemia or acute necrotizing cholecystitis occurring during the acute pancreatitis episode requires emergent operative management. [World Emergency Surgery Society] 29
Bowel fistula extending into a peripancreatic collection is an indication for emergency surgery. [World Emergency Surgery Society] 29

Management of Biliary Pancreatitis

Routine urgent ERCP is not indicated in acute biliary pancreatitis without cholangitis or persistent common bile duct obstruction; eight randomized trials showed no benefit for mortality, organ failure, or infected necrosis. [World Gastroenterology Society, high‑quality evidence] 27
Urgent ERCP (within 24 h) should be performed only when cholangitis or documented bile‑duct obstruction is present. [World Emergency Surgery Society] 29
In mild acute gallstone pancreatitis, laparoscopic cholecystectomy during the index admission (as early as day 2 if clinically improving) prevents recurrent biliary pancreatitis. [World Emergency Surgery Society] 28
In moderate‑to‑severe pancreatitis with peripancreatic fluid collections, cholecystectomy should be deferred until collections have resolved or stabilized. [World Emergency Surgery Society] 28

Critical Pitfalls

Over‑resuscitation with fluids precipitates abdominal compartment syndrome, potentially necessitating surgical decompression. [World Emergency Surgery Society] 28
Performing necrosectomy within the first 4 weeks increases morbidity and mortality compared with delayed approaches. [World Emergency Surgery Society, strong evidence] 29, 30
Routine “nil per os” orders should be avoided; oral feeding may be delayed beyond 24 h only for persistent pain, vomiting, or ileus. [World Gastroenterology Society] 27

Follow‑Up and Prevention

Offering a brief alcohol‑intervention program during hospitalization for alcohol‑related pancreatitis reduces the risk of recurrence. [World Gastroenterology Society] 27

Antibiotic and Diagnostic Strategies for Infected Necrotizing Pancreatitis

Antibiotic Selection

Broad‑spectrum agents with excellent pancreatic penetration—specifically carbapenems or piperacillin‑tazobactam—are recommended for treatment of infected necrosis. 31
Quinolones should be avoided because of widespread resistance; they are reserved only for patients with a documented β‑lactam allergy. 31
Routine prophylactic antifungal therapy is not indicated despite frequent isolation of Candida species in infected necrosis. 31
Aminoglycosides (e.g., gentamicin, tobramycin) do not achieve therapeutic pancreatic tissue concentrations and should not be used. 31

Imaging Indicators

The detection of gas within retroperitoneal collections on contrast‑enhanced CT strongly suggests infected necrosis when correlated with the clinical picture. 31

Role of Fine‑Needle Aspiration

Routine CT‑guided fine‑needle aspiration for Gram stain and culture is not recommended; it should be performed only when the diagnosis remains unclear after clinical assessment and imaging, given its high false‑negative rate. 31