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Related Concept Videos

Physical Assessment of the Respiratory Tract I: Health History01:28

Physical Assessment of the Respiratory Tract I: Health History

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Physical assessment of the respiratory tract is critical to patient care. It allows healthcare professionals to identify and manage various respiratory conditions. The process involves a combination of subjective and objective data collection.
Subjective Data
Subjective data provides vital information about the patient's health history and symptoms. This data is typically collected through interviews in which patients describe their experiences, symptoms, and concerns.
Health history and...
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Sputum Studies II: Culture and Sensitivity01:20

Sputum Studies II: Culture and Sensitivity

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Description
Sputum culture and sensitivity is a medical procedure used to diagnose bacterial infections in the respiratory tract and select the most appropriate antibiotics for treatment. This process involves analyzing sputum samples of thick and opaque secretions produced in the lungs and airways. These samples are collected from patients and then sent to the laboratory for analysis.
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Anatomy of Respiratory System I: Upper Respiratory Tract01:29

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The upper respiratory tract plays a vital role in the respiratory system, comprising several structures that facilitate air intake and prepare air for the lungs. It also serves as the first line of defense against pathogens and particles. This tract includes the nose and nasal cavity, the oral cavity, the paranasal sinuses, and the pharynx, each with specific functions and features.
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Sputum Studies I: Gram Stain, cytology, and Acid-fast smear and culture01:26

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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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Suctioning the Nasopharyngeal Airway01:29

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Nasopharyngeal suctioning is a procedure to remove secretions from the upper part of the respiratory tract that the patient cannot clear independently. It helps maintain airway patency and prevents complications such as aspiration pneumonia.
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Assessment of Respiration01:23

Assessment of Respiration

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The respiratory system's basic structures and primary functions lay the foundation for nurses' comprehensive respiratory assessments. This assessment includes subjective and objective data to gauge the patient's respiratory health.
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Related Experiment Video

Updated: Dec 23, 2025

Nasal Brushing Sampling and Processing Using Digital High Speed Ciliary Videomicroscopy – Adaptation for the COVID-19 Pandemic
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Upper respiratory tract sampling in COVID-19.

A Mawaddah1, H S Gendeh, S G Lum

  • 1Universiti Kebangsaan Malaysia Medical Centre, Faculty of Medicine, Department of Otorhinolaryngology, Head and Neck Surgery, Malaysia. marinamatbaki@ppukm.ukm.edu.my.

The Malaysian Journal of Pathology
|April 29, 2020
PubMed
Summary
This summary is machine-generated.

For COVID-19 diagnosis, throat washing samples show higher viral load and sensitivity than nasopharyngeal or oropharyngeal swabs, especially within the first week of symptom onset. Consider throat washing for improved diagnostic accuracy.

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Area of Science:

  • Virology
  • Infectious Diseases
  • Diagnostic Microbiology

Background:

  • Upper respiratory tract sampling is crucial for diagnosing COVID-19.
  • Current literature on sampling methods requires review to optimize healthcare practices.
  • Understanding viral load dynamics in the upper respiratory tract is key for effective testing.

Purpose of the Study:

  • To review existing literature on upper respiratory tract sampling techniques for COVID-19.
  • To provide evidence-based recommendations for improving diagnostic yield and patient comfort.
  • To guide future research directions in COVID-19 diagnostics.

Main Methods:

  • A comprehensive literature search was conducted across PubMed, Medline, and Google Scholar.
  • Twelve relevant manuscripts were selected from over 7000 search results.
  • Manuscripts were analyzed by all authors, including those not yet peer-reviewed due to the topic's urgency.

Main Results:

  • SARS-CoV-2 RNA viral load peaks 4-6 days post-symptom onset, making this period optimal for sampling.
  • Nasopharyngeal swabs generally show higher viral loads and sensitivity compared to oropharyngeal swabs, particularly within 9 days of illness onset.
  • Patient self-collected throat washing demonstrated superior viral load and sensitivity compared to both nasopharyngeal and oropharyngeal swabs.

Conclusions:

  • Throat washing is recommended as a replacement for oropharyngeal swabs due to its higher diagnostic accuracy and safety.
  • Nasopharyngeal swab use should consider nasal cavity anatomy to enhance patient comfort and diagnostic yield.
  • Further research should focus on optimizing sampling methods for improved COVID-19 detection.