Related Experiment Videos

Laboratory diagnosis of gastrointestinal bleeding

L Steingold, A A Roberts

    Gut
    |March 1, 1961
    PubMed

    The value of four tests to detect occult alimentary blood loss has been compared in normal subjects, in patients with and without alimentary disease, and in patients with congestive heart failure, and the sensitivities of these tests have been compared using suspensions of blood alone and blood in faeces. The Occultest proved almost as sensitive as did the benzidine test in the detection of faecal blood loss, and, if combined with a spectroscopic test for protoporphyrin, minimizes the number of ;false' positive results that are reported. Such false positive results will inevitably occur but are reduced by dietary restriction before the test is made.

    Related Concept Videos

    Serum Laboratory Studies, Stool Test, Breath Test01:30

    Serum Laboratory Studies, Stool Test, Breath Test

    Gastrointestinal (GI) diagnostic studies are pivotal in confirming, ruling out, diagnosing, or staging various diseases, including cancers. Following diagnosis, allocating time for discussions with the patient and providing informational resources is crucial. Diagnostic assessments of the GI tract often occur in outpatient settings like endoscopy suites or GI labs. Preparation for these tests may include dietary restrictions, fasting, liquid bowel preparations, laxatives, enemas, and the...
    Peptic Ulcer Disease III: Clinical Manifestations and Diagnostic Studies01:28

    Peptic Ulcer Disease III: Clinical Manifestations and Diagnostic Studies

    Peptic ulcer disease (PUD) presents with diverse symptoms depending on the location and severity of the ulcer. Clinical manifestations of peptic ulcer include dull pain and a burning sensation in the mid-epigastric region.
    Few clinical manifestations differentiate gastric ulcers from duodenal ulcers. Distinctions in the location, timing, and pain relief are crucial for healthcare providers in differentiating between gastric and duodenal ulcers during clinical assessments.
    Inflammatory Bowel Disease III: Diagnostic Studies and Management I-Nutritional Therapy01:30

    Inflammatory Bowel Disease III: Diagnostic Studies and Management I-Nutritional Therapy

    Various diagnostic tests are employed in the diagnostic process for Inflammatory Bowel Disease (IBD), particularly to differentiate between Crohn's disease and ulcerative colitis.
    Diagnostic studies
    A colonoscopy is the definitive screening test, distinguishing ulcerative colitis from other colon diseases with similar symptoms. During a colonoscopy test, inflamed mucosa with exudate ulcerations can be observed, and biopsies are taken to determine the histologic characteristics of the colonic...
    Gastritis III: Clinical Manifestations and Management01:23

    Gastritis III: Clinical Manifestations and Management

    The clinical manifestations of gastritis can vary depending on the cause and type of gastritis, but some common symptoms may include the following.
    Clinical manifestations of acute gastritis
    The patient with acute gastritis may have a rapid onset of symptoms, such as epigastric pain or discomfort, dyspepsia, anorexia, hiccups, or nausea and vomiting, which can last from a few hours to a few days. Erosive or hemorrhagic gastritis may cause bleeding, which may manifest as blood in vomit or as...
    Esophageal Varices-II: Clinical Features and Management01:28

    Esophageal Varices-II: Clinical Features and Management

    Esophageal varices often manifest as gastrointestinal bleeding episodes, presenting symptoms like hematemesis (vomiting of blood), hematochezia (passing fresh blood via the rectum), and melena (black, tarry stools). Other signs can include weight loss, anorexia, abdominal discomfort, jaundice, pruritus, altered mental status, and muscle cramps.
    In the initial assessment, a thorough review of the patient's medical history is vital to identify risk factors such as liver disease, alcohol abuse, or...
    Imaging Studies III: Gastrointestinal Motility Studies and Virtual Colonoscopy01:26

    Imaging Studies III: Gastrointestinal Motility Studies and Virtual Colonoscopy

    This lesson explores three gastrointestinal imaging techniques: radionuclide testing, colonic transit studies, and virtual colonoscopy.
    Radionuclide Testing
    Radionuclide testing is a sophisticated medical technique for assessing gastrointestinal motility. It focuses on gastric emptying and colonic transit time. Radioactive markers track the movement of food through the digestive system, providing insights into gastrointestinal disorders.
    In gastric emptying studies, a meal's liquid and solid...