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Progesterone has noticeable effects on respiratory physiology, increasing minute volume (the amount of air breathed in and out of the lungs in 1 minute) by 40% in the first trimester via an increase in tidal volume alone, as the respiratory rate does not change during pregnancy.
Early pregnancy bleeding (also called first trimester bleeding) is vaginal bleeding before 14 weeks of gestational age. [ 1 ] [ 2 ] If the bleeding is significant, hemorrhagic shock may occur. [ 1 ] Concern for shock is increased in those who have loss of consciousness , chest pain, shortness of breath , or shoulder pain.
Placental abruption defined as the separation of the placenta from the uterus prior to delivery, is a major cause of third trimester vaginal bleeding and complicates about 1% of pregnancies. [ 13 ] [ 50 ] Symptomatic presentations are variable: Some women can entirely ignore the symptoms, while others have mild bleeding or abdominal discomfort ...
Gestational hypertension or pregnancy-induced hypertension (PIH) is the development of new hypertension in a pregnant woman after 20 weeks' gestation without the presence of protein in the urine or other signs of pre-eclampsia. [1] Gestational hypertension is defined as having a blood pressure greater than 140/90 on two occasions at least 6 ...
The third trimester is defined as starting, between the beginning of week 28 (27 weeks + 0 days of GA) [37] or beginning of week 29 (28 weeks + 0 days of GA). [4] It lasts until childbirth . Timeline of pregnancy, including (from top to bottom): Trimesters, embryo/fetus development, gestational age in weeks and months, viability and maturity stages
3 and CO 2 and increased blood pH) and often hypokalemia (potassium depletion). The hypokalemia is an indirect result of the kidney compensating for the loss of acid. With the loss of intake of food the individual may eventually become cachectic. A less frequent occurrence results from a vomiting of intestinal contents, including bile acids and ...