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A fused tetanic contraction is the strongest single-unit twitch in contraction. [6] When tetanized, the contracting tension in the muscle remains constant in a steady state. This is the maximal possible contraction. [3] During tetanic contractions, muscles can shorten, lengthen or remain constant length. [7] Tetanic contraction is usually ...
During a contraction, uterine blood flow becomes disrupted as myometrial pressure elevates to a higher level than spiral arterial pressure, and this disallows oxygen to reach the fetus through the placenta during these contractions. [1] During normal labor contractions, there is adequate time for a fetus to recover its levels of oxygenation ...
Uterine hyperstimulation or hypertonic uterine dysfunction is a potential complication of labor induction. This is displayed as Uterine tachysystole- the contraction frequency numbering more than five in a 10-minute time frame or as contractions exceeding more than two minutes in duration. [1]
The concentration of prostaglandins in the blood plasma and amniotic fluid increases during labor. [5] These inflammatory mediators encourage myometrial contractions to induce labor. [5] Prostaglandins are also related to the changes in gap junction formation and connexin-43 expression during labor. [9]
A uterotonic, also known as an oxytocic or ecbolic, is a type of medication used to induce contraction or greater tonicity of the uterus. Uterotonics are used both to induce labor and to reduce postpartum hemorrhage. [1] Labor induction in the third trimester of pregnancy may be
An analysis of 2024 Google search data revealed the top health questions asked by Americans. A registered nurse provides answers to the seven most common inquiries.
Cocaine use during the third trimester has a 10% chance of causing abruption. Though the exact mechanism is not known, cocaine and tobacco cause systemic vasoconstriction, which can severely restrict the placental blood supply (hypoperfusion and ischemia), or otherwise disrupt the vasculature of the placenta, causing tissue necrosis, bleeding ...
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