Reducing EIPH
The extraordinary forces generated during high-speed exertion place immense stress on the blood vessels deep within a horse's lungs. This stress often results in Exercise Induced Pulmonary Hemorrhage (EIPH), commonly known as "lung bleeding."
Research confirms that only two methods effectively reduce EIPH: FLAIR® Equine Nasal Strips and the drug furosemide (Lasix). While Lasix targets internal pressure, FLAIR Strips address the external mechanical forces that cause vessels to burst.
To Learn More about EIPH →The Physics of a Rupture
EIPH occurs at the Pulmonary Capillary Membrane (PCM). This membrane is the gateway for oxygen, but it is 1/100th the thickness of a human hair. During a gallop, it is caught in a violent "tug-of-war":
- The Push: Blood pressure inside the capillaries increases 4-fold, pushing outward against the membrane.
- The Pull: High vacuum pressure from heavy inhalation pulls on the membrane from the outside.
When the combined force of the Push and the Pull exceeds the strength of the fragile PCM, it ruptures, spilling red blood cells into the airways.
Visualizing the Rupture: Electron Micrograph vs. Artist Render
Two Ways to Reduce the Pressure
To stop the bleeding, you must reduce the stress on the membrane. This can be done from the inside or the outside.
The Drug (Furosemide)
A diuretic that reduces the internal blood pressure (the Push) by causing the horse to lose fluid through urination.
FLAIR® Strips
A mechanical support that reduces airway resistance (the Pull). By supporting the nasal passages, less vacuum pressure is required to move air.
Note: FLAIR® Strips and Lasix can be used together for maximum protection.
