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International Expert Consensus and Recommendations for Neonatal Pneumothorax Ultrasound Diagnosis and Ultrasound-guided Thoracentesis Procedure
Published on: March 12, 2020
Gastrointestinal perforation without intraperitoneal air-fluid level in neonatal pneumoperitoneum
AJR. American Journal of Roentgenology
|December 1, 1976
Summary
Neonatal pneumoperitoneum diagnosis requires careful evaluation. An intraperitoneal air-fluid level is not always present in gastrointestinal perforation, even with mechanical ventilation, necessitating further diagnostic steps.
Area of Science:
- Pediatric Surgery
- Neonatal Radiology
- Gastrointestinal Disorders
Background:
- Neonatal pneumoperitoneum is a critical condition requiring prompt diagnosis.
- Radiographic assessment, particularly the presence of an intraperitoneal air-fluid level, is crucial for identifying gastrointestinal perforation.
Purpose of the Study:
- To evaluate the reliability of the intraperitoneal air-fluid level in diagnosing neonatal pneumoperitoneum due to gastrointestinal perforation.
- To assess the impact of mechanical ventilation on the radiographic signs of pneumoperitoneum.
Main Methods:
- Retrospective review of 21 neonatal pneumoperitoneum cases (1970-1974).
- Analysis of initial cross-table lateral roentgenograms for air-fluid levels.
- Correlation of radiographic findings with autopsy or surgical confirmation of gastrointestinal perforation.
- Inclusion of cases with pneumoperitoneum secondary to mechanical ventilation.
- Postmortem study in a premature infant cadaver to investigate fluid volume effects.
Main Results:
- Of 14 cases with proven gastrointestinal perforation, 6 lacked an air-fluid level on initial radiography.
- Eight cases with perforation demonstrated an air-fluid level.
- Four cases of pneumoperitoneum due to ventilation-related air leak showed no air-fluid level.
- Postmortem study suggested that small amounts of intraperitoneal fluid may obscure the air-fluid level.
Conclusions:
- The absence of an intraperitoneal air-fluid level does not rule out gastrointestinal perforation in neonates.
- Mechanical ventilation does not guarantee the presence of an air-fluid level.
- Water-soluble contrast examination can be a valuable diagnostic tool when initial radiography is inconclusive.
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