It is completely natural to feel overwhelmed, anxious, or fearful when you hear that a loved one in the Intensive Care Unit (ICU) has been placed on a 'ventilator.' Much of this fear often stems from the unknown. In truth, this machine is an invaluable tool in the fight to save a life. At Nirogi Lanka, we want to help you understand what a 'ventilator'—or what medical professionals call 'Mechanical Ventilation'—is and how it works, explained in simple, clear terms.
Simply put, what is a ventilator?
A ventilator is a machine that supports your breathing when you are unable to breathe effectively on your own. Think of it like using crutches for a broken leg; just as crutches support your weight to help you move, a ventilator takes over part or all of the work of breathing for your lungs.
Most importantly, a ventilator is not a cure for a disease. It is a form of life support. It works to stabilize your respiratory function while other treatments and medications help your body recover.
Primarily, a ventilator performs the following tasks:
- Delivers the oxygen your body needs into your lungs.
- Helps remove excess carbon dioxide, a waste gas, from your system.
- Provides the necessary pressure to keep the tiny air sacs in your lungs (alveoli) open and functioning properly.
Your doctors can adjust the machine’s settings based on your specific medical needs.
Are Intubation and Ventilation the same?
No. This is a common point of confusion. While they often occur together, they are two distinct processes.
- Intubation: This is the medical procedure where a doctor passes a tube through your mouth and into your windpipe (trachea).
- Mechanical Ventilation: This refers to the act of connecting that tube to the ventilator machine to assist your breathing.
In certain circumstances, ventilation can also be provided through a tight-fitting face mask, without the need for an invasive tube.
What are the types of ventilation?
A ventilator assists your breathing by pushing air into your lungs using positive pressure. This can be accomplished in two primary ways. We have summarized this below for your easy understanding.
| Ventilation Type | Simple Explanation |
|---|---|
| Invasive Mechanical Ventilation | This method involves inserting a tube into your airway. This tube is passed through your mouth (intubation) or via a small surgical incision in the neck (tracheostomy) and connected to the ventilator. |
| Non-invasive Ventilation | In this method, a mask is fitted snugly over your face and connected to the ventilator to push air into your lungs. Devices like CPAP or BiPAP®, often used even at home, fall into this category. |
Who needs support from a ventilator?
A ventilator may be required whenever you are unable to breathe effectively on your own. Common scenarios include:
- During Surgery: General anesthesia medications can suppress your breathing. A ventilator helps maintain consistent, safe breathing throughout your procedure.
- Severe Lung Infections or Diseases: Conditions such as pneumonia, COVID-19, Acute Respiratory Distress Syndrome (ARDS), or chronic lung conditions like COPD.
- Emergency Situations: If your airway is obstructed or breathing fails due to trauma or medical emergencies, such as severe anaphylaxis.
- Brain Injury: Conditions like a stroke or coma may impair the brain's signals that tell your lungs to breathe.
- Gas Imbalance: When you have dangerous levels of carbon dioxide (hypercapnia) or low oxygen (hypoxemia) in your blood.
- Preventing Aspiration: To prevent food, saliva, or liquids from entering your lungs when you are too sedated to protect your own airway.
What happens while you are on a ventilator?
Because you require constant, close observation, you will typically be cared for in an Intensive Care Unit (ICU) by a specialized team of doctors, nurses, and respiratory therapists.
Monitoring
You may notice several machines attached to you. These constantly monitor your blood pressure, heart rate, breathing rate, and oxygen saturation. You will also receive routine chest X-rays and blood tests.
Suctioning
To keep your airway clear, your nursing team will frequently use a thin tube (catheter) to remove excess mucus. This may cause you to cough. While this may look uncomfortable to loved ones, it is essential for keeping your airway clean and preventing infection.
Medication, Nutrition, and Hygiene
Certain medications may be delivered directly to your lungs via the breathing tube (aerosolized). Since you cannot eat, you will receive liquid nutrition through a nasogastric tube (a tube passed through the nose to the stomach). Necessary fluids are provided intravenously.
Are you awake?
Our goal is to keep you as comfortable, calm, and alert as possible. However, depending on your condition, we may need to keep you in a deeply sedated state to allow your body the necessary rest to heal. Sometimes, to prevent accidental injury—such as pulling out your breathing tube—we may need to gently restrain your hands. This is done purely for your safety.
What are the benefits and risks?
As with any medical intervention, ventilator use comes with both benefits and inherent risks.
| Benefits | Risks |
|---|---|
| Eliminates the physical effort of breathing, allowing your body to focus energy on fighting infection and healing. | Bacteria can travel along the breathing tube into the lungs, potentially causing infections like ventilator-associated pneumonia. |
| Ensures your body receives adequate oxygen and removes excess carbon dioxide. | The pressure required to inflate the lungs can, in some cases, cause pressure-related lung injury. |
| Keeps the tiny air sacs (alveoli) in your lungs open and functioning. | Potential for air to leak into the space around the lung, causing it to collapse (Pneumothorax). |
| Maintains a secure, open airway at all times. | Can place strain on the heart's function and impact your blood pressure. |
In some severe medical cases, a patient may lose the ability to breathe independently. Furthermore, placing a patient with no hope of recovery on a ventilator can unnecessarily prolong the dying process. In such sensitive situations, it is crucial that you have an open discussion with your doctor to make the best possible decision for your loved one.
How is a patient removed from a ventilator?
Once your loved one’s condition improves and physicians confirm they are ready to breathe on their own, the process of "weaning" begins. We gradually reduce the machine’s support to test if the patient can sustain their own breathing. If everything progresses well, the endotracheal (ET) tube is safely removed.
Please note that it is completely normal for the patient to experience a sore throat or a hoarse voice for a few days after the tube is removed.
Important Takeaways from Nirogi Lanka
- Mechanical ventilation is not a cure for a disease; it is a life-support system that assists with breathing while the body heals.
- There is no need to panic. Your loved one is being closely monitored by a specialized team of experts in the Intensive Care Unit (ICU).
- As with any medical procedure, there are risks, but our medical team is dedicated to minimizing them at every step.
- If you have any questions or concerns, please speak openly with your doctor. They are there to explain every detail to you.
- Finally, we encourage everyone to discuss their own personal wishes regarding medical treatment with their family while in good health, so that your preferences are known should a serious medical situation arise.
Ventilator, mechanical ventilation, life support, ICU, intensive care unit, breathing, intubation, tracheostomy, ARDS, pneumonia, respiratory distress, emergency care
