O10: Pre-existing hypertension complicating pregnancy, childbirth and the puerperium

Pre-existing hypertension complicating pregnancy, childbirth and the puerperium refers to a group of conditions resulting from high blood pressure that existed before a pregnancy. It can impact both the mother and the unborn child during pregnancy, childbirth, and the period following birth, known as the puerperium. Common symptoms include severe headaches, vision problems, and swelling in the face or hands. This usually is identified through steadily high blood pressure readings. It's important to remember that this condition is not transmitted, but rather is an existing health condition that is exacerbated by the changes in the body brought on by pregnancy. Conditions like these can often cause complications such as preeclampsia, premature birth, or growth issues in the baby. It primarily affects the cardiovascular system in the mother and can indirectly influence multiple systems in the developing fetus.