Blood pressure is the force of blood against the walls of the arteries. Persistently high blood pressure, also called hypertension, can increase the risk of cardiovascular and other health problems. Many people do not notice symptoms, so measuring blood pressure is an important part of health assessment.
A single reading does not always provide a complete picture. The numbers need to be interpreted in context, and a healthcare professional can advise whether repeat measurements, home monitoring or further evaluation are needed.
What do the two blood pressure numbers mean?
A blood pressure reading is usually written as two numbers, for example 120/80 mm Hg.
- Systolic pressure is the top number. It reflects the pressure in the arteries when the heart contracts.
- Diastolic pressure is the bottom number. It reflects the pressure while the heart relaxes between beats.
Blood pressure categories and treatment thresholds can vary according to the guideline used and a person’s overall health. A clinician should interpret your readings rather than relying on one number in isolation.
Why might blood pressure be high?
Blood pressure can be influenced by age, family history, other medical conditions, some medicines, alcohol intake, dietary patterns, physical activity, sleep and other factors. Often there is no single identifiable cause. Your healthcare professional can discuss which factors may be relevant to you and whether additional assessment is needed.
How to measure blood pressure more reliably at home
- Use a validated monitor with an appropriately sized cuff and follow its instructions.
- Rest quietly before measuring and sit with your back supported and feet flat on the floor.
- Support your arm at heart level and avoid talking during the measurement.
- Take readings as instructed by your clinician and record the results, including the date and time.
- Share your readings with your healthcare professional rather than changing medication based only on a single result.
Home monitoring can help show patterns, but the monitor and technique should be reviewed if readings seem inconsistent or unexpected.
What should you do if a reading is high?
If a reading is higher than expected, sit quietly and repeat it according to your clinician’s advice. Keep a record and contact your healthcare professional to discuss persistently elevated readings. Do not stop or change prescribed blood-pressure medication without medical advice.
A very high reading—around 180/120 mm Hg or above—needs prompt attention. Wait at least one minute and measure again. If the reading remains that high, contact a healthcare professional urgently. If a very high reading occurs with chest pain, shortness of breath, weakness, numbness, a change in vision, difficulty speaking or other severe, new symptoms, seek emergency medical care immediately using the local emergency service.
How is hypertension managed?
Management depends on repeat readings, cardiovascular risk, other health conditions and the clinician’s assessment. It may involve lifestyle measures, prescribed medication, regular follow-up or a combination. Your healthcare professional can explain the goal for your readings and how often to monitor them.
Helpful habits may include eating a balanced diet, staying physically active within your abilities, limiting excess sodium, avoiding tobacco, moderating alcohol and supporting good sleep. The right plan should be individualised, especially if you have kidney disease, diabetes, heart disease or take medication.
When should you book a medical consultation?
Arrange a consultation if repeated readings are above the range recommended for you, if you have been advised to monitor blood pressure, or if you have risk factors such as diabetes, kidney disease or cardiovascular conditions. Seek urgent care for very high readings as described above or for concerning symptoms.
Cardiology care at Medwin Medical Center
Medwin’s Cardiology Department provides assessment and care for cardiovascular conditions, including hypertension, and lists services such as ECG and ambulatory blood-pressure monitoring. Your clinician can advise which assessment is suitable for your circumstances.
Explore Medwin’s Cardiology service or contact the clinic to enquire about a consultation.
Frequently asked questions
Can high blood pressure occur without symptoms?
Yes. High blood pressure often has no obvious warning signs, which is why measurement and follow-up matter.
Is one high reading enough to diagnose hypertension?
Not usually. Readings can vary, and a clinician may recommend repeat measurements or home or ambulatory monitoring before making a diagnosis or adjusting treatment.
Should I stop my medication if my readings improve?
No. Do not stop or change prescribed medication without discussing it with the clinician responsible for your care.
Medical information notice: This article is for education and is not a personal diagnosis or treatment plan. If you have severe or concerning symptoms, seek appropriate urgent medical care.
