In male lab rats with high blood pressure caused by a steroid, taking a drug called minoxidil seems to make their hearts pump more blood with each beat—without changing how fast the heart beats—meaning the heart might be filling better or squeezing harder.

12

Pro

0

Against

Evidence from Studies

Supporting (1)

12

Community contributions welcome

12

Hemodynamics of dexamethasone-induced hypertension in the rat

Randomized Controlled Trial

Animal

2009 Oct

The study looked at the same type of rats and used minoxidil like in the claim, and found that it increased blood-pumping ability without changing heart rate, which supports the idea that each heartbeat is stronger or more filled with blood.

Contradicting (0)

0

Community contributions welcome

No contradicting evidence found

Gold Standard Evidence Needed

According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.

Source Study

Hemodynamics of dexamethasone-induced hypertension in the rat

Score: 12

DOI: 10.1038/hr.2009.118

Similar Assertions

In male lab rats, taking minoxidil and dexamethasone together lowers blood vessel resistance and boosts heart performance, but it doesn’t stop blood pressure from going up — meaning just relaxing blood vessels might not be enough to fix steroid-linked high blood pressure.

12

0

83%

In male lab rats, giving a steroid called dexamethasone for about two weeks raises their blood pressure because their blood vessels get tighter — not because their heart pumps harder.

0

12

71%