Functional evaluation of the diaphragm with a noninvasive test

Area of Science:

• Cardiology
• Respiratory Physiology
• Neuromuscular Function

Background:

• Median sternotomy in cardiac surgery causes temporary and permanent diaphragm damage.
• Myocardial infarction induces genetic changes in the diaphragm, leading to maladaptation.
• Diaphragm function is crucial for physical/mental health and post-cardiac event recovery.

Purpose of the Study:

• To review the neurophysiological relationships of the diaphragm.
• To describe symptoms of diaphragmatic contractile dysfunction.
• To propose and provide a scientific basis for a novel non-instrumental diaphragmatic test.

Main Methods:

• Literature review of diaphragm neurophysiology and dysfunction.
• Analysis of existing diagnostic tools (ultrasound, MRI, CT).
• Conceptualization of a new non-instrumental assessment method.

Main Results:

• Established link between cardiac events/surgery and diaphragm dysfunction.
• Detailed review of diaphragmatic contractile dysfunction symptoms.
• Proposed a novel, non-instrumental approach for diaphragm assessment.

Conclusions:

• Diaphragm evaluation is essential in cardiac patient care.
• Current instrumental methods have limitations.
• A new non-instrumental test warrants further research for improved diaphragm assessment.