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Acute Respiratory Failure-III

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-V

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...

Acute Respiratory Failure-II

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-IV

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...

Acute Respiratory Failure-I

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,...

Atypical Pneumonia

Atypical Pneumonia

Atypical pneumonia, often caused by Mycoplasma pneumoniae, is a form of pulmonary infection that differs from the classical presentation of bacterial pneumonia in both its cause and clinical symptoms. Mycoplasma pneumoniae is a pleomorphic bacterium notable for its lack of a rigid cell wall. This structural characteristic imparts resistance to beta-lactam antibiotics and significantly influences the bacterium’s behavior within the human host.Other pathogens responsible for the disease include...

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Updated: May 27, 2026

Detection of Anti-MDA5 Autoantibodies Using HeLa Cells and Immunocytochemistry with Light Microscopy

Detection of Anti-MDA5 Autoantibodies Using HeLa Cells and Immunocytochemistry with Light Microscopy

Published on: October 31, 2025

Polymyositis presenting with respiratory failure.

Jerryl Maclean¹, Raj B Singh, Zaheer Ahmed Sayeed

¹Department of Respiratory Medicine, Apollo Hospitals, Chennai, India.

The Indian Journal of Chest Diseases & Allied Sciences

|December 2, 2011

Summary

This summary is machine-generated.

Polymyositis can cause diaphragmatic weakness and respiratory failure, even when limb muscles remain strong. This case highlights a rare presentation of this autoimmune disorder affecting respiratory function.

Related Experiment Videos

Last Updated: May 27, 2026

Detection of Anti-MDA5 Autoantibodies Using HeLa Cells and Immunocytochemistry with Light Microscopy

Detection of Anti-MDA5 Autoantibodies Using HeLa Cells and Immunocytochemistry with Light Microscopy

Published on: October 31, 2025

Area of Science:

Rheumatology
Pulmonology
Neurology

Background:

Polymyositis is a systemic autoimmune disease causing skeletal muscle inflammation, typically affecting proximal muscles.
Extra-muscular manifestations such as dysphagia and skin issues are common.
Diaphragmatic involvement is an under-recognized complication.

Observation:

This case report details a patient presenting with diaphragmatic weakness and subsequent respiratory failure.
Limb muscle strength was relatively preserved in this individual.
The presentation was attributed to polymyositis.

Findings:

Polymyositis can lead to significant diaphragmatic dysfunction.
Respiratory failure is a potential severe outcome of polymyositis.
The pattern of weakness may not always correlate with limb muscle strength.

Implications:

Highlights the importance of considering diaphragmatic function in polymyositis patients, especially with respiratory symptoms.
Suggests that respiratory evaluation is crucial for early diagnosis and management of polymyositis-induced respiratory failure.
Broadens the understanding of polymyositis's diverse clinical spectrum and potential impact on respiratory mechanics.