Retropulsion

Retropulsion most often occurs when you are trying to reach for something higher than sholder level.

For patients prone to retropulsion, wearing shoes with high heels may diminish or prevent the backward stepping.

Pretreating rats with α-methyl-ρ-tyrosine (30 mg/kg i.p. at -4 h) to interrupt the synthesis of catecholamines antagonized pivoting and retropulsion induced by levallorphan (50 mg/kg i.p.) (WRAY 1973) but, surprisingly, not lateral head movements and pivoting elicited by cyclazocine (3 mg/kg s.c.) (BUCKETT and SHAW 1975).

Retropulsion of the eye slackens the rectus muscle and, if forced ductions improve with retropulsion, then the restriction is secondary to a tight rectus muscle.

Spinal CT or MRI reveals violation of the posterior cortex of the vertebral bodies (burst fracture) with retropulsion of bone into the spinal canal.

The goal of retropulsion is to expand the diameter of the urethra with fluid to suspend the obstructing substance in a fluid column that will carry it back into the bladder.

The motility of the gastroduodenal junction regulates gastric emptying and minimises retropulsion of the duodenal contents into the antrum.

From this account, it will also be evident, that there can be no danger from the retropulsion, or rather the retiring of prickly heat, except what may arise from the cause that checked perspiration. Many absurd notions have been entertained on this subject, which have really proved prejudicial to health. It hs been very generally supposed, that the matter of prickly heat was highly injurious, and therefore, that the retiring of it into the body was extremely dangerous.