Hypoxic Conditioning for Heart Failure Exercise Capacity
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Solution Overview
Problem
Patients with heart disease or at risk of developing heart failure face limitations in exercise capacity due to impaired oxygen handling and cardiac function, for which existing treatments are inadequate in providing beneficial physiological changes or improving exercise performance.
Innovation Solution
Exposing patients to temporary hypoxic conditions simulating various altitudes through intermittent or extended hypoxic training regimens, combined with exercise training if tolerated, to induce physiological adaptations similar to altitude acclimatization, thereby enhancing cardiac and skeletal muscle function.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If patients with heart failure engage in exercise training, then exercise capacity may be improved, but their impaired oxygen handling and cardiac function limit their ability to tolerate exercise
Solution Approach 1:
The patent applies preliminary action by exposing patients to hypoxic conditions before exercise training to induce physiological adaptations (increased red blood cell mass, improved oxygen delivery) that prepare the cardiovascular system for subsequent exercise, thereby enabling improved exercise capacity without being limited by the initially impaired oxygen handling
Solution Approach 2:
The patent changes the oxygen partial pressure parameter by exposing patients to hypoxic environments (reduced oxygen availability) to trigger physiological adaptations including increased erythropoietin production and red blood cell mass, which subsequently improve oxygen delivery and enable better exercise tolerance
2Reliability
If existing treatments are used for heart failure patients, then standard care is provided, but beneficial physiological changes and improved exercise performance are not achieved
Solution Approach 1:
The patent introduces hypoxic exposure as an intermediary mechanism that mediates between standard heart failure care and improved exercise performance. The hypoxic exposure acts as a physiological stimulus that triggers adaptive responses (increased red blood cell mass, improved oxygen delivery) bridging the gap between standard treatment and enhanced exercise capacity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The hypoxic training regimens improve exercise tolerance, increase red blood cell mass, and enhance oxygen delivery, leading to improved cardiac function and reduced exercise limitations in patients with heart failure or cardiovascular conditions.
Implementation Method 1
During acclimatization, there is an erythropoietin induced increase in red blood cell mass in response to hypoxia
Implementation Method 2
there is a rightward shift of the oxy-hemoglobin dissociation curve with increase in 2, 3-diphospoglycerate level. Right shift of the curve leads to reduced affinity for oxygen, and hence, improved tissue oxygenation
Implementation Method 3
There is an increase in ventilation, mainly due to an increase in tidal volume. This hypoxic ventilatory response also improves oxygen transportation
Data Source
AI summary
Patients having exercise limiting conditions and those at risk of developing such conditions are exposed to a regimen of hypoxic conditions that simulate various altitude conditions. The exposure is of a temporary nature, being from a few hours to most of a day or night in any one day and repeated on a personally worked out regimen of from a series of consecutive days to a regular number of “on” and “off” days, to a random number of days. An alternate regimen is such exposure for a few minutes at a time followed by normoxic rest period of a few minutes, with the cycle repeated multiple times over the course of a treatment session. The conditioning treatment strengthens the cardiac tissue and skeletal muscle and the results extend beyond the treatment periods whereby the patient's condition is substantially improved.