Related Experiment Video
Updated: Jan 23, 2026
10:50
Osmotic Drug Delivery to Ischemic Hindlimbs and Perfusion of Vasculature with Microfil for Micro-Computed Tomography Imaging
Published on: June 29, 2013
12.8K
Isolated free fluid on computed tomography for blunt abdominal trauma
W Bekker1, Mtd Smith1, V Y Kong1,2
1Department of Surgery, University of KwaZulu Natal, Durban, South Africa.
Annals of the Royal College of Surgeons of England
|June 21, 2019
Summary
Isolated free fluid on abdominal computed tomography (CT) in blunt trauma patients does not automatically require surgery. Clinical factors, not just CT findings, should guide decisions on laparotomy, allowing for observation in stable patients.
Area of Science:
- Trauma Surgery
- Diagnostic Imaging
- Emergency Medicine
Background:
- The clinical significance of isolated free fluid detected via abdominal computed tomography (CT) in blunt abdominal trauma patients remains unclear.
- This study aimed to review institutional experience and refine clinical algorithms for managing blunt abdominal trauma patients with isolated free fluid on CT.
Purpose of the Study:
- To evaluate the diagnostic performance of isolated free fluid on abdominal CT in blunt trauma.
- To determine the predictive value of isolated free fluid for non-operative management success.
- To inform clinical decision-making regarding laparotomy in blunt abdominal trauma.
Main Methods:
- Retrospective audit of 1066 patients with blunt abdominal trauma undergoing abdominal CT between December 2012 and December 2017.
- Analysis of patients with isolated free fluid on CT, categorizing them into non-operative and operative management groups.
- Assessment of outcomes, including laparotomy rates, surgical findings, and mortality.
Main Results:
- Isolated free fluid was found in 148 (14%) of 1066 patients.
- The finding of isolated free fluid on CT demonstrated high sensitivity (98%) and specificity (96%) for true isolated free fluid.
- Isolated free fluid predicted successful non-operative management with a positive predictive value of 93% and a negative predictive value of 96%.
Conclusions:
- Isolated free fluid on abdominal CT alone is not an absolute indication for laparotomy in blunt abdominal trauma.
- Clinical factors such as hemodynamic status and abdominal examination findings are crucial for deciding on laparotomy.
- Patients with isolated free fluid and no clinical indication for urgent surgery can be safely observed.
Related Concept Videos
01:10Computed Tomography
8.1K
Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
8.1K
01:27Imaging Studies III: Computed Tomography
314
DefinitionComputed Tomography (CT) of the genitourinary (GU) tract is a non-invasive imaging modality that utilizes X-rays and computer processing to generate detailed cross-sectional images of the urinary system, encompassing the kidneys, ureters, bladder, and adjacent structures such as the adrenal glands.PurposeCT scans of the GU tract serve several diagnostic and therapeutic purposes, including:Diagnosis of Urinary Tract Diseases: Detects kidney stones, tumors, cysts, and congenital...
314
01:25Abdominal Aorta
2.2K
Once the aorta traverses the diaphragmatic plane at the aortic hiatus, it is known as the abdominal aorta. This anatomical structure is positioned leftward of the spinal column, encased within a cocoon of adipose tissue behind the peritoneal cavity. It terminates at the L4 vertebra, where it splits into the common iliac arteries. Prior to this bifurcation, the abdominal aorta gives rise to several vital branches.
The celiac trunk, a singular artery, divides into the left gastric artery, which...
The celiac trunk, a singular artery, divides into the left gastric artery, which...
2.2K
01:34The Fluid Mosaic Model
177.4K
The fluid mosaic model was first proposed as a visual representation of research observations. The model comprises the composition and dynamics of membranes and serves as a foundation for future membrane-related studies. The model depicts the structure of the plasma membrane with a variety of components, which include phospholipids, proteins, and carbohydrates. These integral molecules are loosely bound, defining the cell’s border and providing fluidity for optimal function.
177.4K
01:20Ultrasound I: Abdominal Ultrasonography
1.5K
Introduction:
Abdominal ultrasonography, commonly known as abdominal ultrasound, is a vital, non-invasive medical imaging technique widely used in healthcare.
Procedure:
This diagnostic tool allows the clinician to visually inspect internal structures within the abdomen, including vital organs such as the liver, gallbladder, pancreas, kidneys, and spleen.
The abdominal ultrasound process begins with applying a special gel to the patient's skin over the abdomen. This gel enhances the...
Abdominal ultrasonography, commonly known as abdominal ultrasound, is a vital, non-invasive medical imaging technique widely used in healthcare.
Procedure:
This diagnostic tool allows the clinician to visually inspect internal structures within the abdomen, including vital organs such as the liver, gallbladder, pancreas, kidneys, and spleen.
The abdominal ultrasound process begins with applying a special gel to the patient's skin over the abdomen. This gel enhances the...
1.5K
01:19Abdominal Regions and Quadrants
16.8K
To promote clear communication, for instance, about the location of a patient's abdominal pain or a suspicious mass, anatomists and clinicians typically use imaginary lines to categorize the abdominopelvic cavity into either four quadrants or nine regions to identify organs in the cavity.
The simpler quadrants approach, which is more commonly used in medicine, subdivides the cavity with one horizontal and one vertical line that intersects at the patient's umbilicus (navel). The four...
The simpler quadrants approach, which is more commonly used in medicine, subdivides the cavity with one horizontal and one vertical line that intersects at the patient's umbilicus (navel). The four...
16.8K