Hydrogen Gas Helps Heart Recovery After Cardiac Arrest in Rats
Hydrogen therapy after resuscitation improves myocardial injury involving inhibition of autophagy in an asphyxial rat model of cardiac arrest
Research hubs: Cardiovascular System
This research was done in animals. Results in animals often don't carry over to people.
- Evidence type
- Animal study (rat)
- Authors
- Xiaohui Gong, Xinhui Fan, Xinxin Yin, Tonghui Xu, Jiaxin Li, Jialin Guo, Xiangkai Zhao, Shujian Wei, Qiuhuan Yuan, Jiali Wang, Xuchen Han, Yuguo Chen
- Journal
- Experimental and Therapeutic Medicine
- Year
- 2022
- PMID
- 35495584
- Study Type
- Rat
- Delivery
- Gas
- Dose
- room air mixed with 2% H2 gas for respiration after resuscitation
- H₂ concentration
- 2% H2 gas
- Outcome
- Positive
- Peer Reviewed
- Yes
- Cited by
- 6 (OpenAlex, as of November 2026)
- Country
- China
TL;DR
Breathing in hydrogen gas after a heart attack and CPR can help improve heart function and survival by reducing harmful cell processes in rats.
Key Finding
Rats treated with hydrogen gas after cardiac arrest and resuscitation showed improved survival rates and better heart function, with less damage to heart muscle cells compared to untreated rats.
Summary
Researchers tested whether hydrogen gas therapy could protect the heart after cardiac arrest and resuscitation in rats. Rats that received 2% hydrogen gas to breathe after being revived from cardiac arrest showed better survival rates and improved heart function compared to control rats. The study suggests hydrogen gas works by reducing a cellular process called autophagy (where cells break down their own components), which appears to cause damage to heart muscle cells after resuscitation.
Practical Takeaway
This is an early-stage animal study that suggests hydrogen gas inhalation may help protect heart tissue after cardiac arrest, but it does not yet demonstrate safety or effectiveness in humans. Much more research, including human clinical trials, would be needed before this approach could be considered for medical use in cardiac arrest patients.
Abstract (excerpt)
Hydrogen (H2) therapy is a therapeutic strategy using molecular H2. Due to its ability to regulate cell homeostasis, H2 therapy has exhibited marked therapeutic effects on a number of oxidative stress-associated diseases. The present study investigated the effectiveness of H2 therapy in protecting…