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Related Concept Videos

Appendicitis-II: Diagnostic Studies and Management01:29

Appendicitis-II: Diagnostic Studies and Management

Diagnosing and managing appendicitis requires a structured and comprehensive approach that spans from initial assessment to postoperative care. Here is an overview of the process:
Diagnosing Appendicitis
It requires a multifaceted approach, starting with a detailed physical examination to pinpoint the location and nature of the pain and identify any associated symptoms. Laboratory tests play a crucial role. A complete Blood Count (CBC) typically reveals leukocytosis (an increased number of...
Appendicitis-I: Introduction01:22

Appendicitis-I: Introduction

The appendix, a small, narrow, blind tube extending from the inferior part of the cecum, is widely regarded as a vestigial organ, having lost much of its original function through evolution. Despite its diminished role, the appendix can become inflamed, a condition known as appendicitis.
Etiology: Appendicitis can arise from various causes, primarily rooted in the obstruction of the appendix lumen. Factors contributing to this obstruction include fecal accumulation, lymphoid hyperplasia and, in...
Appendicitis01:19

Appendicitis

Appendicitis is an acute inflammatory condition of the vermiform appendix, most commonly caused by obstruction of its lumen. The appendix is a narrow, blind-ended pouch that extends from the cecum, making it particularly prone to obstruction. Causes include fecaliths, lymphoid hyperplasia (often after viral infections), parasites, tumors, or foreign bodies. This obstruction initiates a cascade of pathological changes.Luminal Obstruction and Early InflammationAfter obstruction, normal mucosal...
Acute Coronary Syndrome III: Diagnostic Studies01:30

Acute Coronary Syndrome III: Diagnostic Studies

Diagnosing acute coronary syndrome or ACS begins with a thorough patient history. Notable symptoms include central, crushing chest pain radiating to the left arm, neck, jaw, or back, along with shortness of breath, sweating (diaphoresis), nausea, vomiting, dizziness, and palpitations.It is crucial to note any history of cardiac illnesses and assess risk factors, including age, gender, smoking, hypertension, diabetes, hyperlipidemia, and a sedentary lifestyle.During physical examination, vital...
Acute Pancreatitis II: Clinical Manifestations and Management01:30

Acute Pancreatitis II: Clinical Manifestations and Management

Acute pancreatitis presents a complex medical emergency characterized by rapid onset inflammation of the pancreas, demanding timely diagnosis and management to prevent complications. The condition primarily manifests through severe upper abdominal pain that often radiates to the back. This pain intensifies following the consumption of fatty foods. Accompanying symptoms such as nausea, vomiting, abdominal distention, fever, dyspnea, cyanosis, and jaundice can vary in intensity but significantly...
Peptic Ulcer Disease III: Clinical Manifestations and Diagnostic Studies01:28

Peptic Ulcer Disease III: Clinical Manifestations and Diagnostic Studies

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An Approach to Point-Of-Care Ultrasound Evaluation of the Abdominal Aorta
07:12

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Published on: September 8, 2023

Accuracies of diagnostic methods for acute appendicitis.

Jong Seob Park1, Jin Ho Jeong, Jong In Lee

  • 1Department of Surgery, Myongji Hospital, Kwandong University, Goyang, Korea.

The American Surgeon
|January 16, 2013
PubMed
Summary

Ultrasonography and computed tomography are highly accurate for diagnosing acute appendicitis. Ultrasonography is recommended as the initial imaging test, potentially reducing unnecessary surgeries.

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Area of Science:

  • Medical Imaging
  • Surgical Diagnostics
  • Gastroenterology

Background:

  • Accurate diagnosis of acute appendicitis is crucial for timely treatment and minimizing complications.
  • Diagnostic accuracy of imaging modalities and physical examination varies, impacting patient outcomes and healthcare costs.

Purpose of the Study:

  • To compare the diagnostic accuracy and negative appendectomy rates of ultrasonography, computed tomography, and physical examination for acute appendicitis in a clinical setting.
  • To establish optimal diagnostic pathways for acute appendicitis.
  • To evaluate the effectiveness of imaging studies following physical examination.

Main Methods:

  • Retrospective analysis of 2763 patients diagnosed with acute appendicitis.
  • Calculation of sensitivity, specificity, positive predictive value, and negative predictive value for each diagnostic method.
  • Assessment of negative appendectomy rates for each diagnostic approach.

Main Results:

  • Ultrasonography demonstrated high sensitivity (99.1%) and specificity (91.7%), with a negative appendectomy rate of 5.2%.
  • Computed tomography showed comparable accuracy (sensitivity 96.4%, specificity 95.4%) and a lower negative appendectomy rate (4.3%).
  • Physical examination had high sensitivity (99.0%) but lower specificity (76.1%), resulting in a higher negative appendectomy rate (12.2%).

Conclusions:

  • Both ultrasonography and computed tomography are effective for diagnosing acute appendicitis.
  • Ultrasonography is recommended as the preferred initial imaging modality due to its advantages.
  • Negative physical examination findings may obviate the need for further imaging, reducing costs and patient exposure to radiation.