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Related Concept Videos

Cystic Fibrosis: Pathogenesis01:23

Cystic Fibrosis: Pathogenesis

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Cystic fibrosis (CF), an autosomal recessive disorder, significantly affects the function of exocrine glands. This genetically inherited disease is characterized by the production of thick and sticky mucus, which can severely affect various organs and systems in the body.
CF is primarily caused by a genetic mutation in a chromosome 7 gene coding for the cystic fibrosis transmembrane conductance regulator (CFTR) protein. The most common gene mutation leading to CF is the ΔF508 mutation,...
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Cystic Fibrosis: Management01:24

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Cystic fibrosis (CF) is an autosomal recessive disorder that predominantly affects individuals of Northern European descent, occurring at a rate of 1 in 3500. It is caused by a genetic mutation in a gene on chromosome 7, most commonly the ΔF508 mutation, that codes for the cystic fibrosis transmembrane conductance regulator (CFTR) protein. This results in thicker mucus secretions and obstruction pathologies in multiple organs, including the lungs and sinuses.
Sinus disease and chronic...
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Chronic Obstructive Pulmonary Disease-IV: Assessement and Diagnostic Studies01:27

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Assessing and diagnosing Chronic Obstructive Pulmonary Disease (COPD) involves a detailed approach that includes a comprehensive review of medical history, physical examination, and a variety of diagnostic tests. This thorough evaluation is essential to ensure an accurate diagnosis and guide effective management strategies.
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Serum Laboratory Studies, Stool Test, Breath Test01:30

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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...
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Pulmonary Function Tests01:25

Pulmonary Function Tests

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Pulmonary Function Tests (PFTs)
Pulmonary Function Tests are crucial diagnostic tools for assessing respiratory function, particularly in patients with chronic respiratory disorders. They comprehensively evaluate lung volumes, ventilatory function, breathing mechanics, diffusion, and gas exchange. These tests help diagnose pulmonary diseases and play a significant role in monitoring disease progression, evaluating disability, and assessing response to therapy.
PFTs involve using a spirometer, a...
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Sputum Studies I: Gram Stain, cytology, and Acid-fast smear and culture01:26

Sputum Studies I: Gram Stain, cytology, and Acid-fast smear and culture

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Sputum studies are a critical part of diagnosing and treating numerous respiratory conditions. These studies involve obtaining sputum samples for analysis to identify pathogenic organisms and assess the presence of abnormal cells indicative of malignant conditions. This lesson will delve into three fundamental sputum studies: Gram Stain, Cytology, and Acid-fast Smear and Culture.
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Related Experiment Video

Updated: Mar 26, 2026

Rectal Organoid Morphology Analysis ROMA: A Diagnostic Assay in Cystic Fibrosis
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Diagnostic Testing in Cystic Fibrosis.

John Brewington1, J P Clancy1

  • 1Division of Pulmonary Medicine, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, MLC 2021, 3333 Burnet Avenue, Cincinnati, OH 45229, USA.

Clinics in Chest Medicine
|February 10, 2016
PubMed
Summary

Cystic Fibrosis (CF), a rare genetic disorder, requires early diagnosis through various screening and diagnostic tests. Prompt identification and treatment of CF improve patient outcomes in nutrition, lung health, and cognition.

Keywords:
CRMSCystic fibrosisDiagnosisNewborn screeningSweat chloride

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Area of Science:

  • Medical Genetics
  • Pulmonology
  • Biochemistry

Background:

  • Cystic Fibrosis (CF) is a rare, multisystem genetic disorder with significant morbidity and mortality.
  • CF results from defects in the cystic fibrosis transmembrane conductance regulator (CFTR) protein, crucial for chloride and bicarbonate transport.
  • Early diagnosis and intervention in CF are linked to improved nutritional status, pulmonary function, and cognitive abilities.

Purpose of the Study:

  • To review the characteristics of available screening and diagnostic tests for Cystic Fibrosis.
  • To outline guideline-based algorithms for establishing a CF diagnosis using these tests.
  • To discuss the classification and management of diagnostic challenges, including CFTR-related metabolic syndrome and other CFTR-associated diseases.

Main Methods:

  • Literature review of CF screening and diagnostic modalities.
  • Analysis of current clinical guidelines for CF diagnosis.
  • Discussion of case-based scenarios and management strategies for diagnostic dilemmas.

Main Results:

  • Multiple screening and diagnostic tests exist for CF, each with specific characteristics.
  • Established algorithms guide the diagnostic process, integrating various testing results.
  • Diagnostic dilemmas, such as CFTR-related metabolic syndrome, require specific classification and management approaches.

Conclusions:

  • Accurate and timely diagnosis of CF is critical for effective management and improved patient outcomes.
  • Understanding the nuances of different diagnostic tools and algorithms is essential for clinicians.
  • Addressing diagnostic challenges ensures comprehensive care for individuals with CFTR-related conditions.