science

Paroxysmal hypertension

Paroxysmal hypertension is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Paroxysmal hypertension rather than just read about it. In short: Paroxysmal hypertension is episodic and volatile high blood pressure, which may be due to stress of any sort, or from a pheochromocytoma, a type of tumor involving the adrenal medulla. Patients with paroxysmal hypertension who test negative for pheochromocytoma are said to be suffering from a clinical entity called "pseudopheochromocytoma." This disorder is due to episodic dopamine discharge and has been observed pr…

Key takeaways

Paroxysmal hypertension belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Paroxysmal hypertension to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Paroxysmal hypertension from memory before moving on to harder problems.

Reference excerpt

Paroxysmal hypertension is episodic and volatile high blood pressure, which may be due to stress of any sort, or from a pheochromocytoma, a type of tumor involving the adrenal medulla. Patients with paroxysmal hypertension who test negative for pheochromocytoma are said to be suffering from a clinical entity called "pseudopheochromocytoma." This disorder is due to episodic dopamine discharge and has been observed predominantly in hypertensive women whose presentation mimicked pheochromocytoma, but with subsequent testing being negative for malignancy. In patients with pseudopheochromocytoma, dopamine was found to be significantly increased post-paroxysm. The paroxysm is said to be similar to the hypertensive episodes described by Page in 1935, and has been colloquially referred to as "Page's Syndrome". These episodes can occur after diencephalic stimulation. The exact cause of pseudopheochromocytoma is unknown, though it is thought to be related to episodic dopamine discharge. External stressors that may contribute include pain, anxiety, or emotional trauma. Therefore, treatment of pseudopheochromocytoma is aimed at psychological support and intervention with antidepressants, but also treatment with alpha and then beta blockers in resistant cases.

References

Further reading Kuchel O, Buu NT, Larochelle P, Hamet P, Genest J (1986). "Episodic dopamine discharge in paroxysmal hypertension. Page's syndrome revisited". Archives of Internal Medicine. 146 (7): 1315–20. doi:10.1001/archinte.1986.00360190079011. PMID 3718127. Seck SM, Ka EF, Niang A, Diouf B (2009). "Pseudopheochromocytoma: An uncommon cause of malignant hypertension". Indian Journal of Nephrology. 19 (3): 122–4. doi:10.4103/0971-4065.57111. PMC 2859479. PMID 20436734. Mann SJ (2008). "Severe paroxysmal hypertension (pseudopheochromocytoma)". Current Hypertension Reports. 10 (1): 12–8. doi:10.1007/s11906-008-0005-2. PMID 18367021. S2CID 36584198. Páll A, Becs G, Erdei A, Sira L, Czifra A, Barna S, Kovács P, Páll D, Pfliegler G, Paragh G, Szabó Z (2014). "Pseudopheochromocytoma induced by anxiolytic withdrawal". European Journal of Medical Research. 19 (1): 53. doi:10.1186/s40001-014-0053-9. PMC 4196012. PMID 25288254.

External links GPnotebook entry

Worked examples

Example 1 — a first encounter with Paroxysmal hypertension

Start with the simplest possible case. Write down what Paroxysmal hypertension claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Paroxysmal hypertension before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Paroxysmal hypertension ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Paroxysmal hypertension

In research: Paroxysmal hypertension appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Paroxysmal hypertension in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Paroxysmal hypertension is common in secondary-school and first-year university syllabi. It links to neighbouring topics Hypertension, Medical sign stubs, so understanding it makes those chapters shorter.
In everyday life: Look for Paroxysmal hypertension outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Paroxysmal hypertension in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Paroxysmal hypertension means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Paroxysmal hypertension out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Paroxysmal hypertension in simple terms?

Why does Paroxysmal hypertension matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Paroxysmal hypertension?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Paroxysmal hypertension.