Is My Blood Pressure Rising? Prehypertension Risks - Family Medicine

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Blood pressure issues


Hello doctor, I would like to ask about my blood pressure.
For the past six years, I have measured it approximately twice a year, and it has been around 102/68.
Recently, in the last month, my readings have been around 129/68 and 123/78.
Is this considered prehypertension? (The measurements were taken at the same time each day.) My systolic pressure has increased by about 20 compared to before, and I am a bit concerned, as I found online that a systolic pressure of 120-130 is classified as prehypertension.
My height is 164 cm and my weight is 46 kg.
Thank you.

Xiao Ling, 30~39 year old female. Ask Date: 2022/04/26

Dr. Lin Zhebin reply Family Medicine


Hello: By definition, a systolic blood pressure of 120-139 or a diastolic blood pressure of 80-89 is classified as prehypertension.
Therefore, the blood pressure values you provided meet the criteria for a diagnosis of prehypertension.
Additionally, it is important to consider your heart rate to comprehensively assess the reasons for the elevated blood pressure.
If your heart rate has been consistently elevated over the past month, it may be necessary to consider other potential conditions (such as hyperthyroidism), which would require medical evaluation and treatment.
Lastly, the management of prehypertension primarily focuses on dietary and exercise modifications.
I recommend adjusting your lifestyle and maintaining a habit of monitoring your blood pressure.
If your blood pressure continues to exceed 140/90 in the future, then further medical evaluation and treatment should be considered.

Reply Date: 2022/04/26

More Info


Based on the information you've provided, it appears that your blood pressure readings have indeed shown an increase over the past month. Historically, your blood pressure has been around 102/68 mmHg, which is considered normal. However, your recent readings of 129/68 mmHg and 123/78 mmHg indicate a rise in systolic blood pressure (the top number), which is now approaching the threshold for prehypertension.

According to the American Heart Association (AHA), blood pressure is classified as follows:
- Normal: Systolic < 120 mmHg and Diastolic < 80 mmHg
- Elevated: Systolic 120-129 mmHg and Diastolic < 80 mmHg
- Hypertension Stage 1: Systolic 130-139 mmHg or Diastolic 80-89 mmHg
- Hypertension Stage 2: Systolic ≥ 140 mmHg or Diastolic ≥ 90 mmHg
Given that your systolic readings are now in the range of 120-129 mmHg, you are indeed in the "elevated" category, which is a precursor to hypertension. This is a signal that you should monitor your blood pressure closely and consider lifestyle modifications to help manage it.

Several factors can contribute to elevated blood pressure, including stress, diet, physical inactivity, and weight. Since you mentioned that your weight is on the lower side (46 kg), it may be beneficial to focus on other lifestyle factors. Here are some recommendations:
1. Diet: Adopt a heart-healthy diet, such as the DASH (Dietary Approaches to Stop Hypertension) diet, which emphasizes fruits, vegetables, whole grains, and lean proteins while reducing sodium intake. Aim for less than 2,300 mg of sodium per day, or even lower if you have other risk factors.

2. Physical Activity: Regular physical activity can help lower blood pressure. Aim for at least 150 minutes of moderate aerobic exercise each week, such as brisk walking, cycling, or swimming.

3. Weight Management: Although you are at a lower weight, maintaining a healthy weight is crucial. If you are underweight, consult with a healthcare provider to ensure you are gaining weight healthily.

4. Stress Management: Since stress can significantly impact blood pressure, consider incorporating stress-reducing techniques into your routine, such as mindfulness, yoga, or deep-breathing exercises.

5. Regular Monitoring: Continue to monitor your blood pressure regularly at the same time each day. This will help you track any changes and provide valuable information to your healthcare provider.

6. Consult a Healthcare Provider: Given your recent increase in blood pressure, it would be wise to consult with a healthcare provider. They can assess your overall health, consider any underlying conditions, and determine if further evaluation or treatment is necessary.

In summary, while your recent blood pressure readings indicate a shift towards prehypertension, there are many proactive steps you can take to manage your blood pressure effectively. Lifestyle modifications, regular monitoring, and consultation with a healthcare provider will be key in addressing your concerns and maintaining your cardiovascular health.

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