Imagine that someone close to you suddenly has a very high blood pressure, or a heart emergency and is hospitalized. Then you may have heard about a special medicine that doctors give through a saline solution as an emergency treatment. Nitroprusside is a very important medicine used in such cases. This is not a medicine to use at home, but a special injection that is given only under strict supervision in the hospital. So today, let's talk about this medicine in a little more detail and simply.
What really happens with this medicine?
Simply put, Nitroprusside is a drug in a class of drugs called vasodilators . The word 'vasodilator' may sound like a big deal, but its meaning is very simple. What this drug does is widen the blood vessels in our body and relax them.
Imagine that when a water pipe is slightly clogged, if you widen the pipe, the water flows easily without pressure, right? That's what happens here too. When blood vessels widen, there is more room for blood to flow. Due to this, the blood pressure that was too high drops quickly. Also, the effort that the heart has to put in to pump blood is greatly reduced.
For these reasons, doctors use this medicine mainly in two situations:
- Control severe high blood pressure/hypertensive crisis .
- Reduce the strain on the heart in some severe heart failure conditions .
Important things to tell your doctor before giving this medicine
Even though this is a medication given in a hospital, it is essential that the doctor knows your or the patient's complete medical history. You should definitely inform the doctor if you have any of the following conditions:
- Other illnesses you have, especially:
- An eye condition
- A previous head injury
- Other heart diseases
- Kidney disease
- Liver disease
- Anemia / low red blood cells
- If you have allergies to nitroprusside or any other medicine, food, or dye.
- If you are pregnant or trying to get pregnant .
- If you are a breastfeeding mother .
Based on this information, the doctor will decide whether or not to give you this medicine, or how to give it.
How do I use this medicine and what happens if I overdose?
This is not a medicine you can take home. This is a medicine that is given through a saline solution (infusion into a vein). It is given only in a hospital or clinic, such as an intensive care unit, by a doctor or trained nursing staff. They will continuously monitor things like your blood pressure and heart rate.
Do you give it to children?
This medicine can be given to young children, even very newborns, in some special cases. But the decision is made by a pediatrician. Therefore, if it is given to a child, there are special precautions that apply.
Overdose
Since this is administered very carefully in the hospital, the chance of overdose is very low. However, if you suspect that you have taken too much of the medicine, you should immediately inform the medical staff. Normally, in case of any poisoning, we say to call the National Poisons Information Centre at the Colombo National Hospital . However, in case of anything else in a hospital like this, it is most important to inform the Emergency Treatment Unit (ETU) or the medical staff of the relevant ward directly.
Other medications that may interact with this medicine
Most importantly: Give your doctor a clear list of all the medications you take (prescribed by other doctors, over-the-counter, traditional, vitamins, herbal products). Also tell them if you smoke or drink alcohol. Some things can interact with this medication.
In particular, Nitroprusside may interact with the following medications:
- Some medications used for sexual dysfunction (e.g. Sildenafil, Tadalafil)
- Riociguat (a medicine for pulmonary hypertension)
- Other medications for blood pressure, heart disease, and irregular heartbeat
- General anesthetics used during surgery
What side effects can be seen?
Like any medicine, Nitroprusside can cause some side effects. Some of these should be reported immediately, while others are not so serious.
| Side effect | Description |
|---|---|
| Things to report to the doctor/nursing staff immediately | |
| Allergic reactions | Skin rash, itching, swelling of the lips/tongue/face. |
| Symptoms of increased acidity in the blood (Acidosis) | Increased breathing rate, rapid heartbeat, headache, confusion, extreme fatigue, nausea, vomiting. |
| Symptoms of a very low blood pressure | Severe dizziness, feeling like your eyes are turning blue, feeling like you're about to fall, extreme weakness. |
| Symptoms of methemoglobinemia | Pale, gray, or blue skin, headache, rapid heartbeat, shortness of breath, fatigue. |
| Usually nothing to worry about, but if it persists, things to report | |
| Facial flushing | The face feels hot and turns red. |
| Pain at the injection site | Pain, redness, or inflammation where the injection was given. |
Another thing to be careful about when giving medicine...
Because this medicine lowers blood pressure, you may feel dizzy . Therefore, do not get up from a sitting position or get out of bed suddenly. Doing so may increase dizziness and cause you to fall. Be very careful about this, especially if you are elderly.
Take-Home Message
- Nitroprusside is a special medicine given intravenously in a hospital setting to control high blood pressure and certain heart conditions in emergencies.
- This widens the blood vessels and reduces the workload on the heart.
- Be sure to tell your doctor about any other illnesses you have, all medications you take, and any allergies you have.
- Be careful when standing up or sitting down, as dizziness may occur when the medication is given.
- If you experience any serious side effects such as skin rashes, difficulty breathing, or extreme dizziness, notify the medical staff immediately.
- If you have any questions about this medicine, feel free to ask the doctor who is treating you.
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