Hypoxic conditioning in patients with exercise limiting conditions

• US 20100137380A1
• Filed: 01/29/2010
• Published: 06/03/2010
• Est. Priority Date: 07/25/2007
• Status: Active Grant

• Current Assignee: Montefiore Medical Center
• Original Assignee: Montefiore Medical Center
• Inventors: Maybaum, Simon
• Granted Patent: US 8,475,340 B2
• Time in Patent Office: Days
• US Class Current: 514/363
• CPC Class Codes: A61M 16/0045 Means for re-breathing exhaled gases, e.g. for hyperventilation treatment
• CPC Class Codes: A61M 2202/0014 removed from the body
• CPC Class Codes: A61M 2202/0208 Oxygen
• CPC Class Codes: A61M 2202/0266 Nitrogen (N)
• CPC Class Codes: A63B 2213/006 under hypoxy conditions, i.e. oxygen supply subnormal
• CPC Class Codes: A63B 71/00 Games or sports accessories not covered in groups A63B1/00 - A63B69/00 starting appliances A63K3/02

Abstract

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.

Claims

1. A method of treatment of a patient having a condition which limits exercise comprising exposing said patient to hypoxic conditions (hypoxic treatment), with intermittent normoxic-hypoxic conditions (IHT) or extended hypoxic conditions without intermittent normoxic conditions (EHT).

2. The method of claim 1 wherein said hypoxic conditions include hypobaric conditions.

3. The method of claim 1 wherein said hypoxic conditions are carried out under normobaric conditions.

4. The method of claim 1 wherein said hypoxic conditions reduce inspired air oxygen content to not more than about 19%.

5. The method of claim 4 wherein said hypoxic conditions reduce inspired air oxygen content to not more than about 17%.

6. The method of claim 4 wherein said hypoxic conditions reduce inspired air oxygen content to not more than about 15%.

7. The method of claim 1 wherein said hypoxic treatment (inclusive of said IHT and said EHT) are maintained for at least 1 hour per day for at least 1 day out of not more then about every 22 days.

8. The method of claim 7 wherein said hypoxic treatment (inclusive of said IHT and said EHT) are maintained for at least 3 hours per day for at least 1 day out of not more then about every 22 days.

9. The method of claim 7 wherein said hypoxic treatment (inclusive of said IHT and said EHT) are maintained for at least 4 hours per day for at least 1 day out of not more then about every 22 days.

10. The method of claim 7 wherein said patient is exposed to said hypoxic treatment on at least 4 consecutive days out of not more than about every 22 days.

11. The method of claim 7 wherein said patient is exposed to said hypoxic treatment on at least 8 consecutive days out of not more than about every 22 days.

12. The method of claim 7 wherein said patient is exposed to said hypoxic treatment on approximately alternate days.

13. The method of claim 1 wherein said patient is exposed to said hypoxic conditions intermittently in which said patient is exposed alternatingly between a hypoxic and normoxic condition defining an IHT cycle, said hypoxic condition of said IHT cycle being up to about 10 minutes, and said normoxic condition of said IHT cycle being up to about 10 minutes, said IHT cycle being repeated multiple times within an IHT treatment session, said IHT treatment session being at least a continuous span of time not less than about 45 minutes, the final normoxic condition if said IHT treatment session optionally not included within said at least about 45 minutes of said IHT treatment session.

14. The method of claim 7 wherein a rest period of at least 6 days is introduced between treatment cycles.

17. The method of claim 1 wherein said hypoxic conditions include corresponding reductions in carbon dioxide content of said inspired air so that oxygen and carbon dioxide are in the same proportion to each other as in ambient air.

18. The method of claim 1 wherein said hypoxic condition is maintained by extracting at least a portion of the oxygen content of the air which is then supplied to said patient for inspiration.

19. The method of claim 1 wherein said hypoxic condition is maintained by adding nitrogen to ambient air to result in a lesser oxygen content air and supplying said lesser oxygen content air to said patient for inspiration.

20. The method of claim 1 wherein said patient has a condition wherein skeletal muscle atrophy or deconditioning is a part thereof.

21. The method of claim 1 wherein said patient has multiple sclerosis.

22. The method of claim 1 wherein said patient has a cardiomyopic condition

23. The method of claim 1 wherein said condition is recovery from a surgical procedure.

26. The method of claim 1 wherein said patient is treated with a carbonic anhydrase inhibitor at least concurrently with said hypoxic treatment.

27. The method of claim 26 wherein said carbonic anhydrase inhibitor treatment is begun at least 48 hours prior to initiating said hypoxic treatment.

28. The method of claim 26 wherein said carbonic anhydrase inhibitor is acetazolamide.

33. The method of claim 1 which further comprising (a) conducting exercise training under (i) said hypoxic periods of said treatment, (ii) said intermittent normoxic conditions, or (iii) within an hour of termination of said hypoxic condition and/or (b) said patient is treated with a carbonic anhydrase inhibitor at least concurrently with said hypoxic treatment.

15. A method of preventing congestive heart failure in a patient at risk thereof comprising exposing said patient to hypoxic conditions (hypoxic treatment), with intermittent normoxic-hypoxic conditions (IHT) or extended hypoxic conditions without intermittent normoxic conditions (EHT).

31. The method of claim 15 which further comprising (a) conducting exercise training under (i) said hypoxic periods of said treatment, (ii) said intermittent normoxic conditions, or (iii) within an hour of termination of said hypoxic condition and/or (b) said patient is treated with a carbonic anhydrase inhibitor at least concurrently with said hypoxic treatment.

16. A method of improving cardio-pulmonary function in a patient suffering from or at risk of congestive heart failure, ventricular failure, angina, systolic heart failure, or diastolic heart failure comprising exposing said patient to a regimen of hypoxic conditions (hypoxic treatment), with intermittent normoxic-hypoxic conditions (IHT) or extended hypoxic conditions without intermittent normoxic conditions (EHT).

32. The method of claim 16 which further comprising (a) conducting exercise training under (i) said hypoxic periods of said treatment, (ii) said intermittent normoxic conditions, or (iii) within an hour of termination of said hypoxic condition and/or (b) said patient is treated with a carbonic anhydrase inhibitor at least concurrently with said hypoxic treatment.

24. A method of improving fitness in a patient having a condition which limits exercise capability comprising exposing said patient to a hypoxic conditions (hypoxic treatment), with intermittent normoxic-hypoxic conditions (IHT) or extended hypoxic conditions without intermittent normoxic conditions (EHT).

29. The method of claim 24 which further comprising (a) conducting exercise training under (i) said hypoxic periods of said treatment, (ii) said intermittent normoxic conditions, or (iii) within an hour of termination of said hypoxic condition and/or (b) said patient is treated with a carbonic anhydrase inhibitor at least concurrently with said hypoxic treatment.

25. A method of improving skeletal muscle in a patient having a condition which limits exercise tolerance in said patient comprising exposing said patient to a hypoxic conditions (hypoxic treatment), with intermittent normoxic-hypoxic conditions (IHT) or extended hypoxic conditions without intermittent normoxic conditions (EHT).

30. The method of claim 25 which further comprising (a) conducting exercise training under (i) said hypoxic periods of said treatment, (ii) said intermittent normoxic conditions, or (iii) within an hour of termination of said hypoxic condition and/or (b) said patient is treated with a carbonic anhydrase inhibitor at least concurrently with said hypoxic treatment.