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Related Concept Videos

Acute Respiratory Failure-IV01:23

Acute Respiratory Failure-IV

Respiratory failure can manifest suddenly or gradually, characterized by a rapid decline in PaO2 and a rapid rise in PaCO2. This situation indicates a severe respiratory problem that may quickly become a life-threatening emergency. One of the early signs of hypoxemic Acute Respiratory Failure (ARF) is a change in mental status due to the brain's sensitivity to oxygen levels and changes in acid-base balance. Symptoms such as restlessness, confusion, and agitation suggest inadequate oxygen...
Respiratory Volumes and Capacities I01:26

Respiratory Volumes and Capacities I

Assessing the respiratory rate and rhythm for a complete minute is crucial for evaluating the breathing pattern. Even a minor increase in the patient's average respiratory rate, by as little as three to five breaths per minute, is an early and vital indicator of respiratory distress. Patients with a respiratory rate exceeding twenty-four breaths per minute require close monitoring to determine the physiological alterations. This careful observation is essential for prompt recognition and...
Acute Respiratory Failure-III01:30

Acute Respiratory Failure-III

Hypercapnic respiratory failure, also known as Type 2 or ventilatory respiratory failure, is a severe condition characterized by the body's inability to effectively remove carbon dioxide (CO2) from the bloodstream. It leads to an arterial CO2 pressure (PaCO2) exceeding 45 mmHg and a blood pH above 7.35. This situation indicates that the body's ventilatory demand, or the ventilation needed to maintain normal PaCO2 levels, surpasses its supply or the maximum gas flow achievable without causing...
Acute Respiratory Failure-I01:21

Acute Respiratory Failure-I

Acute respiratory failure is a condition characterized by the inability of the lungs to perform their primary function: gas exchange. This failure leads to insufficient oxygen levels (hypoxemia) in the blood, elevated carbon dioxide levels (hypercapnia), or both, causing critical impairment in organ function.
Definition: It is defined by specific criteria based on blood gas measurements. Hypoxemia happens when the partial pressure of oxygen (PaO2) falls below 60 mmHg. At the same time,...
Acute Respiratory Failure-II01:21

Acute Respiratory Failure-II

Type I Respiratory Failure, or hypoxemic respiratory failure, occurs when the partial pressure of oxygen (PaO2) in arterial blood falls below 60 mmHg while breathing room air without a corresponding increase in arterial carbon dioxide levels (PaCO2). This condition highlights a significant impairment in the lungs' capacity to oxygenate the blood.
The underlying physiological abnormalities that contribute to hypoxemic respiratory failure include:
Acute Respiratory Failure-V01:29

Acute Respiratory Failure-V

The treatment for acute respiratory failure varies based on factors like the underlying cause, overall health, and severity. A collaborative healthcare team is essential for early detection, often through arterial blood gas analysis. Identifying the cause is the primary goal, with treatment strategies adjusted for ventilation/perfusion (V/Q) mismatch, shunting, or diffusion impairment.
Ensure that patients are monitored continuously for their response to therapy, including changes in...

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Related Experiment Video

Updated: May 23, 2026

Surfactant Depletion Combined with Injurious Ventilation Results in a Reproducible Model of the Acute Respiratory Distress Syndrome (ARDS)
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[The first 24 hours: acute dyspnea].

P Schramm1, M Conrad, N Schneider

  • 1Klinik für Pneumologie und Gastroenterologie, Städtisches Klinikum München GmbH - Klinikum Harlaching. Peter.Schramm@klinikum-muenchen.de

Deutsche Medizinische Wochenschrift (1946)
|April 13, 2012
PubMed
Summary
This summary is machine-generated.

This study outlines a diagnostic approach for acute dyspnea in the emergency department. It details initial steps and investigations to identify the cause and guide treatment for common conditions.

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Area of Science:

  • Emergency Medicine
  • Cardiology
  • Pulmonology

Context:

  • Acute dyspnea is a frequent emergency department (ED) complaint.
  • Rapid diagnosis and management are critical for patient outcomes.
  • Effective initial assessment guides subsequent therapeutic interventions.

Purpose:

  • To present a structured diagnostic strategy for acute dyspnea in the ED.
  • To emphasize the importance of history, physical examination, and investigations.
  • To facilitate timely identification of underlying causes.

Summary:

  • A diagnostic workup for acute dyspnea is presented, incorporating medical history, physical examination, and technical investigations like laboratory tests.
  • This systematic approach aids in identifying cardio-vascular, pulmonary, or other etiologies.
  • Management strategies for three common dyspnea entities are detailed.

Impact:

  • Enables efficient and accurate diagnosis of acute dyspnea.
  • Facilitates prompt initiation of appropriate patient therapy.
  • Improves emergency care for patients presenting with shortness of breath.