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Endoscopic Procedures III: Video Capsule Endoscopy01:28

Endoscopic Procedures III: Video Capsule Endoscopy

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Capsule endoscopy, or wireless or video capsule endoscopy, is a diagnostic procedure for examining the entire gastrointestinal tract. Patients swallow a capsule about the size of a vitamin tablet. The capsule is equipped with a transmitter, a battery, an LED light source, and a color video camera to capture images throughout the gastrointestinal tract. This procedure is particularly useful for diagnosing conditions such as Crohn's disease, ulcerative colitis, tumors, polyps, ulcers,...
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Endoscopic Procedures V: ERCP01:26

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Endoscopic Retrograde Cholangiopancreatography (ERCP) is a diagnostic procedure that combines endoscopy and fluoroscopy to diagnose and treat conditions related to the bile ducts, pancreatic ducts, and gallbladder. This procedure is beneficial for identifying and addressing blockages, gallstones, strictures, and tumors within the biliary or pancreatic systems. ERCP is both diagnostic and therapeutic, offering the ability to visualize and treat identified problems in one session.
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Endoscopic Procedures IV: Sigmoidoscopy and Laproscopy01:26

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Sigmoidoscopy and laparoscopy are distinct medical procedures that enable physicians to internally inspect different parts of the GI tract. Although they serve different purposes, each is essential for diagnosing and, in some cases, treating various medical conditions.
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Endoscopy is a non-surgical medical technique used to examine a person's internal organs and vessels. This lesson will focus on two types of endoscopic studies: bronchoscopy and thoracoscopy.
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Endoscopic Procedures I: Esophagogastroduodenoscopy01:29

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An Esophagogastroduodenoscopy (EGD) is a diagnostic procedure in which an endoscopist uses a flexible, lighted endoscope to visualize the upper gastrointestinal (GI) tract. The procedure includes visualizing the oropharynx, esophagus, stomach, and the first part of the small intestine, the duodenum.
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Endoscopic Procedures II: Colonoscopy01:25

Endoscopic Procedures II: Colonoscopy

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The colon, or large intestine, is the final segment of the digestive system. Its primary functions include absorbing water and vitamins produced by gut bacteria and transforming waste from liquid to solid to form stool. In adults, the large intestine is approximately 5 feet long and consists of four main sections:
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Related Experiment Video

Updated: Aug 7, 2025

Standardized Technique of Aortic Valve Re-implantation for Valve-sparing Aortic Root Replacement
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Endoscopic evaluation technique using a camera port for valve-sparing root reconstruction.

Yusuke Kawasaki1, Etsuro Suenaga1, Taro Nakatsu1

  • 1Department of Cardiovascular Surgery, Kansai Electric Power Hospital, Osaka, Japan.

Interdisciplinary Cardiovascular and Thoracic Surgery
|March 7, 2023
PubMed
Summary

Accurate intraoperative aortic valve assessment is crucial for valve-sparing root replacement. A novel balloon blunt-tip system allows precise evaluation without deforming the Valsalva graft, improving outcomes.

Keywords:
Aortic valve evaluationBalloon blunt-tip systemValve-sparing root reconstruction

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Area of Science:

  • Cardiovascular Surgery
  • Medical Devices
  • Surgical Innovation

Background:

  • Accurate intraoperative aortic valve evaluation is essential in valve-sparing root replacement to prevent postoperative aortic valve regurgitation.
  • Current methods like transesophageal echocardiography require aortic de-clamping and cardiopulmonary bypass weaning.
  • Aortic valve endoscopy offers magnification but can deform the Valsalva graft and does not measure sinus pressure.

Purpose of the Study:

  • To introduce a novel technique for accurate intraoperative aortic valve conformation assessment.
  • To evaluate aortic valve conformation under measured pressure without Valsalva graft deformation.
  • To improve the precision of valve-sparing root replacement procedures.

Main Methods:

  • A new technique utilizing a balloon blunt-tip system for aortic valve evaluation.
  • The proposed method allows assessment under measured pressure within the neo-Valsalva sinus.
  • This technique avoids the need for aortic de-clamping or cardiopulmonary bypass weaning and prevents graft deformation.

Main Results:

  • The balloon blunt-tip system enables accurate evaluation of aortic valve conformation.
  • The method allows for measured pressure assessment within the neo-Valsalva sinus.
  • Valsalva graft deformation is avoided, preserving native valve morphology.

Conclusions:

  • The proposed balloon blunt-tip system offers a more accurate method for intraoperative aortic valve evaluation during valve-sparing root replacement.
  • This technique overcomes the limitations of existing methods by enabling pressure measurement and preventing graft deformation.
  • Improved intraoperative assessment can lead to reduced postoperative aortic valve regurgitation and better surgical outcomes.