Impact of Snakebite Surgery and Sleep Habits on Blood Pressure - Family Medicine

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I am 19 years old and have undergone surgery after being bitten by a cobra?


Hello, Dr.
Chen! I have recently been experiencing high blood pressure, ranging from 140-150/80-90.
I had surgery after being bitten by a snake and received a lot of antivenom; could this have an effect? I've also been going to bed late, around 11 or 12, and sometimes I can't fall asleep until 1 or 2, waking up around 9 or 10.
Could this be the reason for my elevated blood pressure?

Mr. Chen, 10~19 year old female. Ask Date: 2015/07/17

Dr. Chen Zonglin reply Family Medicine


Currently, there is no evidence suggesting that snake venom antivenom causes hypertension.
There are many factors that can lead to high blood pressure.
Poor sleep quality at night is one of them.
It is recommended that you keep a sleep diary and measure your blood pressure the following day to understand the correlation between your blood pressure and sleep.

Reply Date: 2015/07/17

More Info


The relationship between sleep habits and blood pressure is a significant area of concern in the medical field. In your case, it appears that both your recent surgical history due to a snakebite and your sleep patterns may be contributing factors to your elevated blood pressure readings.

Firstly, let's address the impact of the snakebite surgery and the administration of antivenom (blood serum). While the immediate effects of a snakebite can include pain, swelling, and systemic reactions, the long-term impact on blood pressure is less direct. However, any surgical procedure can induce stress on the body, which may temporarily elevate blood pressure. Additionally, if the antivenom caused any allergic reactions or other side effects, these could also potentially influence your cardiovascular system. It is essential to monitor your blood pressure regularly, especially after such an event, and consult your healthcare provider if you notice persistent high readings.

Now, regarding your sleep habits, it is well-documented that poor sleep quality and insufficient sleep can lead to increased blood pressure. Sleep deprivation can activate the sympathetic nervous system, leading to heightened stress responses in the body, which can cause blood vessels to constrict and increase heart rate, ultimately resulting in elevated blood pressure. The fact that you are going to bed late (around 11 PM to 12 AM) and sometimes taking longer to fall asleep (until 1 or 2 AM) suggests that you may not be getting adequate restorative sleep. The recommended amount of sleep for adults is typically 7-9 hours per night, and consistently falling short of this can have detrimental effects on your overall health, including your cardiovascular health.

Moreover, sleep disorders such as insomnia or sleep apnea can further complicate blood pressure regulation. If you find that you are frequently unable to fall asleep or stay asleep, it may be beneficial to explore potential underlying causes, such as anxiety, stress, or other medical conditions. Establishing a regular sleep schedule, creating a calming bedtime routine, and ensuring a conducive sleep environment can help improve your sleep quality.

In summary, both your recent surgical experience and your current sleep habits could be contributing to your elevated blood pressure readings. It is advisable to maintain a regular sleep schedule, aim for sufficient sleep duration, and consult with your healthcare provider regarding your blood pressure concerns, especially in light of your recent surgery. They may recommend lifestyle modifications, further evaluations, or adjustments to your treatment plan to help manage your blood pressure effectively.

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