Category Archives: Nephrology & Hypertension

You have probably had your blood pressure checked countless times. A cuff goes around your arm, two numbers appear on the monitor, and unless someone tells you they are too high or too low, you may not give them much thought.

But what do those two numbers actually tell you?

Blood pressure is one of the simplest ways to get important information about your cardiovascular health. Understanding your numbers can also help you recognize changes over time and know when a pattern may be worth a closer look.

What Do the Two Blood Pressure Numbers Measure?

A blood pressure reading contains two numbers and is measured in millimeters of mercury, or mm Hg.

The top number is your systolic blood pressure. It measures the pressure in your arteries when your heart contracts and pumps blood.

The bottom number is your diastolic blood pressure. It measures the pressure in your arteries while your heart relaxes between beats.

For example, a reading of 118/76 mm Hg means the systolic pressure is 118 and the diastolic pressure is 76.

Both numbers matter when evaluating blood pressure.

What Is Considered a Normal Blood Pressure?

According to current American Heart Association and American College of Cardiology guidelines, blood pressure for adults is generally categorized as:

• Normal: Less than 120 systolic and less than 80 diastolic
• Elevated: 120–129 systolic and less than 80 diastolic
• Stage 1 hypertension: 130–139 systolic or 80–89 diastolic
• Stage 2 hypertension: 140 or higher systolic or 90 or higher diastolic

A blood pressure reading above 180 systolic and/or 120 diastolic is considered severely elevated and requires prompt attention, particularly if symptoms are present.

These ranges provide useful guidance, but your individual health, age, medical history, medications, and other factors also matter. Your physician can help determine what blood pressure goals are appropriate for you.

One High Reading Doesn’t Always Mean You Have Hypertension

Seeing an unexpectedly high number can be concerning, but blood pressure naturally fluctuates throughout the day.

Exercise, stress, caffeine, pain, certain medications, a full bladder, and even feeling nervous during a medical appointment can temporarily affect a reading.

That is why hypertension usually isn’t diagnosed based on one isolated measurement. A pattern of readings over time provides a much more useful picture.

If your blood pressure is elevated during an appointment, your physician may recommend checking it again or monitoring your readings at home.

Why High Blood Pressure Is Easy to Miss

One reason regular blood pressure checks are so important is that hypertension often does not cause obvious symptoms.

You can feel perfectly well while your blood pressure remains consistently elevated.

Over time, uncontrolled high blood pressure can place additional strain on the heart and blood vessels and contribute to problems involving the heart, kidneys, brain, and other organs.

Knowing your numbers gives you an opportunity to identify a potential problem before symptoms or complications develop.

Checking Your Blood Pressure at Home

Home monitoring can provide useful information about what your blood pressure looks like outside of a medical office, but technique matters.

For a more accurate reading:

• Avoid exercise, caffeine, and smoking for at least 30 minutes beforehand.
• Empty your bladder before checking your blood pressure.
• Sit quietly for about five minutes before taking a measurement.
• Keep your back supported and both feet flat on the floor.
• Rest your arm on a surface so the cuff is approximately at heart level.
• Place the cuff on bare skin rather than over clothing.
• Avoid talking or using your phone while the measurement is being taken.

Using a properly sized upper-arm cuff is also important. A cuff that does not fit correctly can affect the accuracy of your reading.

If you are monitoring at home, keeping a record of your measurements can help your physician identify trends rather than relying on a single number.

When Should You Be Concerned About Your Numbers?

If your readings are regularly higher than the normal range, don’t wait for symptoms before bringing them up with your doctor.

Consistently elevated blood pressure does not necessarily mean you will need medication. Depending on your readings and overall health, treatment may include changes involving nutrition, sodium intake, physical activity, weight management, stress, medication, or a combination of approaches.

Very high readings deserve more immediate attention. If your blood pressure is above 180/120 mm Hg, repeat the measurement after a short period of rest. If it remains that high, seek prompt medical guidance. If a severely elevated reading occurs along with chest pain, shortness of breath, weakness or numbness, difficulty speaking, vision changes, or other concerning symptoms, seek emergency medical care.

Know Your Numbers, Not Just Your Latest Reading

Blood pressure is most useful when you think of it as a pattern rather than a single test result.

Knowing your usual range, having your blood pressure checked regularly, and paying attention to changes can help you take a more active role in protecting your health.

At SMC Physicians, our Nephrology, Hypertension, and Cardiology specialists provide evaluation and ongoing management for patients with high blood pressure and conditions that can affect kidney and cardiovascular health. If your blood pressure has been consistently elevated or you have questions about what your readings mean, contact our team to request an appointment.

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Have you ever noticed that your shoes feel a little tighter or your ankles look puffier at the end of a hot summer day? For some people, swelling in the feet and ankles becomes more noticeable when temperatures climb.

Mild swelling after spending time in the heat can be temporary and harmless. But swelling can have many causes, and sometimes it is a sign that something else is going on. Knowing what to look for can help you recognize when simple measures may be enough and when your symptoms should be evaluated.

Why Can Heat Make Your Feet and Ankles Swell?

When your body gets hot, blood vessels near the skin widen to help release heat. This can make it easier for fluid to move from the blood vessels into surrounding tissues.

Gravity also plays a role. Fluid tends to collect in the lower parts of the body, particularly the feet and ankles. That is why swelling may be more noticeable after a long day spent sitting, standing, traveling, or being outdoors.

For some people, this mild swelling improves after getting out of the heat, moving around, or elevating the legs.

Heat Isn’t Always the Only Explanation

Summer weather may make swelling more noticeable, but it is not the only possible cause. Swelling of the feet, ankles, or legs, sometimes referred to as edema, can be associated with a variety of factors.

These can include:

• Sitting or standing in one position for long periods
• Eating a diet high in sodium
• Certain medications
• Pregnancy
• Problems with the veins or circulation in the legs
• Heart conditions
• Kidney disease
• Liver disease
• Other underlying medical conditions

Certain medications, including some used to treat high blood pressure, can also contribute to ankle or leg swelling. If you think a medication may be involved, talk with your doctor before making any changes to how you take it.

What Can You Do About Mild Summer Swelling?

If your swelling is mild and appears to be related to heat or spending a long time on your feet, a few simple habits may help.

Try taking regular movement breaks if you have been sitting or standing for extended periods. Elevating your legs when resting can also help fluid move away from the feet and ankles.

Staying appropriately hydrated during hot weather is important as well. However, people with certain heart or kidney conditions may have individualized recommendations for fluid intake. If you are already under the care of an SMC physician, continue following the guidance provided as part of your treatment plan.

It can also be helpful to pay attention to sodium intake, particularly if swelling is something you experience regularly.

When Swelling Deserves Medical Attention

The pattern of swelling can provide important clues.

Swelling that appears suddenly, affects only one leg, becomes painful, or is accompanied by redness or warmth should not be dismissed as a result of hot weather. These symptoms can sometimes be associated with a blood clot or another condition that requires prompt evaluation.

Seek immediate medical attention if swelling occurs along with symptoms such as:

• Shortness of breath or difficulty breathing
• Chest pain or pressure
• Fainting, dizziness, or significant weakness
• Sudden swelling in one leg, particularly with pain, redness, or warmth

Swelling that keeps returning, continues despite rest and elevation, becomes progressively worse, or occurs along with other changes in your health should also be evaluated.

Persistent Swelling Is Worth Understanding

A little puffiness around the ankles after a long, hot day may not be unusual. What matters is whether it goes away, how often it occurs, and whether other symptoms appear along with it.

Persistent or unexplained swelling can sometimes be connected to cardiovascular health, circulation, kidney function, medications, or another underlying condition. Finding the cause is more important than simply trying to reduce the swelling.

At SMC Physicians, our Cardiology and Nephrology & Hypertension specialists can evaluate symptoms such as persistent swelling in the feet, ankles, or legs and help determine whether an underlying medical condition may be contributing. If swelling has become frequent, unexplained, or concerning, contact our team to request an appointment today.

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