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Put any two — or three — conditions side by side, adult or pediatric, to spot the look-alike differences fast, row by row.

Chronic Hypertension in Pregnancy

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In one line

·Blood pressure was already high before pregnancy or climbed before twenty weeks — the blood vessels were damaged before the baby even arrived.

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Normal physiology

·In a healthy pregnancy, blood vessels relax and open wide in the first half so more blood can flow to the uterus and placenta, feeding the growing baby. Blood pressure drops a little in the first twenty weeks, then slowly climbs back to normal near the end. The heart pumps more blood — about fifty percent more by mid-pregnancy — and the kidneys, liver, and brain all get extra flow too.

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What goes wrong

·The blood vessels were already stiff, thick, or damaged before pregnancy — from years of high pressure, diabetes, kidney disease, or just aging — so they cannot relax and open the way they should. The spiral arteries in the uterus never reshape properly, so they stay narrow and tight instead of becoming wide, floppy pipes. This means pressure stays high and less blood reaches the placenta.

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Hallmark signs

·Blood pressure 140/90 or higher before 20 weeks of pregnancy or before getting pregnant
·Headache that won't go away
·Blurred vision or seeing spots, flashing lights, or dark patches
·Sudden swelling in the hands, face, or feet
·Chest pain or tightness
·Shortness of breath or trouble breathing
·Protein in the urine (proteinuria) found on routine testing
·No symptoms at all (silent high blood pressure)

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Red flags · escalate now

·Blood pressure 160/110 or higher at any visit (severe high blood pressure (hypertension) that can quickly harm the brain, heart, kidneys, or placenta)
·New or sudden severe headache that does not go away with rest or pain medicine
·Vision changes such as blurry sight, flashing lights, blind spots, or loss of part of the visual field
·Chest pain, trouble breathing, or coughing up pink frothy coughed-up mucus (sputum) (signs the heart or lungs are failing)
·New protein in the urine appearing after 20 weeks of pregnancy (may mean preeclampsia is layering on top of chronic high blood pressure (hypertension)—called superimposed preeclampsia)

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Workup

·Blood pressure measurement at every prenatal visit, using correct cuff size and technique
·24-hour urine collection for total protein or spot urine protein-to-creatinine ratio (UPC)
·Serum creatinine
·Platelet count
·Liver enzymes (AST and ALT)
·Serial ultrasounds for fetal growth (every 3–4 weeks starting at 28 weeks)
·Nonstress test (NST) or biophysical profile (BPP) starting at 32 weeks
·Fundoscopic exam (looking at the back of the eye with an ophthalmoscope)

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Treatment

·Labetalol IV (start 20 mg, then 40–80 mg every 10 minutes, max total 220 mg) or hydralazine IV (5–10 mg every 20 minutes, max 30 mg) for blood pressure ≥160/110 mmHg
·Oral labetalol (starting 100–200 mg twice daily, max 2400 mg/day), nifedipine extended-release (starting 30–60 mg daily, max 120 mg/day), or methyldopa (starting 250 mg twice daily, max 3000 mg/day) targeting blood pressure 120–160/80–105 mmHg
·Low-dose aspirin 81 mg once daily starting at 12–16 weeks of pregnancy and continuing until delivery
·Frequent prenatal visits (every 2–4 weeks before 28 weeks, every 1–2 weeks from 28–36 weeks, then weekly after 36 weeks) with blood pressure checks, urine protein screening, and labs (creatinine, platelets, AST, ALT) at baseline and whenever symptoms appear
·Planned delivery at 37–39 weeks if blood pressure is controlled and no signs of preeclampsia or organ damage appear; earlier delivery (as early as 34 weeks) if severe features or fetal distress develop
·Magnesium sulfate IV (4–6 g loading dose over 20 minutes, then 1–2 g/hour infusion) if superimposed preeclampsia with severe features develops, given during labor and for 24 hours postpartum
·Avoid ACE inhibitors (e.g., lisinopril, enalapril), ARBs (e.g., losartan), atenolol, and thiazide diuretics during pregnancy (stop if already taking)

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NCLEX trap

·Chronic high blood pressure (hypertension) means the blood vessels were already stiff and tight before pregnancy even started—she had high blood pressure before she got pregnant or before 20 weeks of pregnancy. Preeclampsia is a new, dangerous problem that can pile on top after 20 weeks—it comes with new protein in the urine and can hurt the liver, kidneys, brain, and blood-clotting system. Chronic high blood pressure needs safe blood pressure pills you can take long-term during pregnancy (like labetalol or nifedipine). Preeclampsia needs magnesium sulfate (a medicine given through an IV) to stop seizures and often quick delivery to stop the damage. They are two different breaks in two different places—do not mix them up.
·If you drop blood pressure too low, the placenta (the organ that feeds the baby) does not get enough pressure to push blood and oxygen through to the baby. That can slow the baby's growth or hurt the baby. The safe target is to keep blood pressure under 140/90 but not below 120/80. The placenta needs some pressure to work—think of it like a garden hose; if the pressure is too low, water will not reach the flowers.
·ACE inhibitors and ARBs hurt the baby's kidneys and skull bones and can cause serious birth defects or even death of the baby. Stop them the moment you know the patient is pregnant. Switch to labetalol (a beta-blocker), nifedipine extended-release (a calcium-channel blocker), or methyldopa (an older blood pressure pill)—these are the safe pills during pregnancy. The medicine list changes the instant pregnancy starts.
·New puffiness and protein in urine after 20 weeks means preeclampsia has piled on top of the chronic high blood pressure (hypertension)—this is called superimposed preeclampsia, and it is a second, dangerous break. Check reflexes, blood pressure, liver enzymes (AST and ALT), platelets, and creatinine (kidney number) right away. This is urgent because her organs can start breaking fast.
·Deliver between 37 and 39 weeks, even if blood pressure is well controlled. The placenta wears out faster in chronic high blood pressure (hypertension)—it does not get as much blood flow because the vessels are stiff. Waiting too long raises the risk of the placenta tearing away from the uterus wall (placental abruption) or the baby not getting enough oxygen (stillbirth). Earlier delivery prevents these disasters.
·Start aspirin 81 mg by mouth daily between 12 and 16 weeks of pregnancy (ideally before 16 weeks). Aspirin is not optional—it lowers the risk of preeclampsia layering on top of chronic high blood pressure (hypertension) by about 15 to 20 percent. Blood pressure pills keep the vessels from squeezing too tight. Aspirin keeps tiny clots from forming in the placenta. They do different jobs—you need both.

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