Ava Monroe
The use of fingernail polish has been described to alter SpO2 readings, and its removal is often recommended before taking pulse oximeter readings. However, the removal of gel nail polish requires a specialised procedure, and it can save valuable time and resources if this can be avoided. Some studies have found that gel nail polish can result in a statistically significant increase in SpO2 readings, leading to overestimations of actual readings and delaying the detection of hypoxaemia. However, other studies have found that nail treatments do not affect readings of patients' oxygen levels.
| Characteristics | Values |
|---|---|
| Interference with pulse oximeter readings | Yes, gel nail polish can interfere with the passing of the beam through the pulse oximeter to the nail bed, affecting the accuracy of the readings |
| Impact on waveform | Gel nail polish can cause issues with the waveform on the oximeter, indicating incorrect readings |
| Impact on SpO2 readings | Yes, gel nail polish can cause a statistically significant increase or decrease in SpO2 readings, depending on the colour and brand of nail polish |
| Impact on detection of hypoxaemia | Yes, gel nail polish can delay the detection of hypoxaemia by resulting in overestimations of actual readings |
| Recommended action | It is generally recommended to remove gel nail polish before taking oximeter readings or to use an alternative monitoring technique |
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What You'll Learn
- Gel nail polish can cause a 2-3% drop in readings
- Doctors recommend removing gel nail polish before taking oximeter readings
- Nail polish can interfere with the passing of the beam through the pulse oximeter
- Nail polish can affect readings by forming a 'nail' over the nail
- Some studies suggest nail polish does not affect readings from digital pulse oximetry devices
Gel nail polish can cause a 2-3% drop in readings
While the impact of gel nail polish on pulse oximeter readings has been a subject of discussion, recent studies suggest that it can cause a slight alteration in the measurements. Gel nail polish can lead to a 2-3% drop in readings, which may be clinically insignificant for healthy individuals but could be a cause for concern for those with already low oxygen levels.
The impact of gel nail polish on pulse oximeter readings has been a topic of interest, especially with the popularity of gel-based manicures. Traditional nail polishes are not known to cause issues, but gel polishes, particularly those with glitter particles, have been found to interfere with accurate readings. This interference can delay the detection of hypoxaemia, which is indicated by a blue nail bed.
The degree of impact varies with the colour of the gel nail polish. Colours such as blue, green, black, dark red, and purple are more likely to cause problems. Lighter shades, such as pink, may have less impact. Additionally, the type of oximeter used can also affect the readings, with devices like the Masimo oximeter and Philips oximeter showing varying results.
To ensure accurate readings, it is generally recommended to remove nail polish before using a pulse oximeter. This is especially important for individuals being monitored at home, as incorrect readings can lead to delayed medical attention. However, it is important to note that recent studies, such as the one conducted by Dr James Purcell and colleagues, suggest that nail treatments do not significantly affect blood oxygen readings.
In conclusion, while gel nail polish can cause a slight alteration in pulse oximeter readings, with a potential drop of 2-3%, this impact may not be clinically significant for most healthy individuals. However, it is always advisable to prioritise accurate readings, especially for those with medical conditions, by removing nail polish or using alternative monitoring techniques.
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Doctors recommend removing gel nail polish before taking oximeter readings
Fingernail polish has traditionally been assumed to absorb light emitted by pulse oximeters and interfere with the detection and measurement of oxygenated hemoglobin. The use of fingernail polish has been described to alter SpO2 readings, and its removal is commonly recommended prior to measurement. However, removing gel nail polish requires a specialized procedure, and valuable time and resources can be wasted in the process.
Some studies have found that certain colours of nail polish can affect pulse oximeter readings. For example, a study using the Masimo oximeter found that light blue and orange gel nail polish resulted in a statistically significant increase from baseline SpO2 readings. Another study found that brown and blue nail polish caused a statistically significant decrease in SpO2 readings, while red nail polish caused a significant decrease when using the side-to-side configuration. However, these changes were not clinically significant (<1% difference).
In addition, a study by Dr James Purcell and colleagues at University College Cork and South Infirmary Victoria University Hospital, Cork, Ireland, found that nail treatments such as acrylic nails and nail polishes of different colours did not affect readings from digital pulse oximetry (DPO) devices used to monitor patients' blood oxygen saturation (SpO2) levels. The authors suggested that hospitals should establish policies that do not require the removal of nail treatments prior to the use of DPO equipment.
Despite the conflicting evidence, doctors still recommend removing gel nail polish before taking oximeter readings to ensure accurate results. Dr Mukesh Budhwani, a General Physician at Apollo Clinic in Pune, states that "any strong barrier, which can stop infrared light from passing through nails, can affect reading". Dr Maurya adds that if you see just the reading and not the waveform on your oximeter, it means the reading isn't correct. Therefore, it is advisable to remove all nail polish and nail art before using a pulse oximeter to ensure accurate readings.
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Nail polish can interfere with the passing of the beam through the pulse oximeter
The nail polish on fingernails can interfere with the light emitted by the pulse oximeter, affecting the detection and measurement of oxygenated hemoglobin. This can result in inaccurate readings. Gel-based manicures, in particular, can cause an overestimation of actual readings, delaying the detection of hypoxaemia. This is because gel nail polish forms a 'nail' over the actual nail, acting as a strong barrier that can stop infrared light from passing through.
Some colours of nail polish have been found to cause more significant interference than others. For example, black, brown, blue, and red nail polish have been found to cause a decrease in SpO2 readings. On the other hand, light colours, such as pink, may not cause as much of an issue. Additionally, the type of oximeter used can also affect the accuracy of readings. For instance, a study found that light blue and orange gel nail polish caused a significant increase in SpO2 readings on a Masimo oximeter but not on a Philips oximeter.
Due to the potential interference of nail polish, it is commonly recommended to remove it before taking oximeter readings. However, this can be a specialised and time-consuming procedure, especially for gel nail polish. Some alternative workarounds include taping the pulse oximeter probe light above the nail bed or rotating the probe so that the light shines on the side of the finger.
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Nail polish can affect readings by forming a 'nail' over the nail
The application of nail polish has been a cause for concern when it comes to pulse oximetry readings. This is because nail polish can interfere with the detection and measurement of oxygenated haemoglobin by absorbing the light emitted by pulse oximeters.
Gel nail polish, in particular, has been known to cause a drop in readings of 2-3%. This is because the gel polish forms a 'nail' over the actual nail, acting as a strong barrier that interferes with the readings by blocking the infrared light from passing through the nails. This can result in an overestimation of the actual readings, delaying the detection of hypoxaemia.
The impact of gel nail polish on pulse oximetry readings varies depending on the colour of the polish. For example, light blue and orange gel nail polish have been found to cause a statistically significant increase in SpO2 readings on the Masimo oximeter, while black and brown nail polish resulted in a significant decrease in SpO2 readings.
It is important to note that there are alternative methods to obtaining accurate readings without removing nail polish. For example, the pulse oximeter probe light can be taped above the nail bed or placed on the side of the finger, or the reading can be taken from anywhere there is pulsatile blood flow, such as the ear, nose, lip-cheek, or toes.
While there is conflicting evidence regarding the impact of nail polish on pulse oximetry readings, it is always advisable to prioritise accuracy in medical measurements. Therefore, if you have any concerns or are monitoring your oxygen levels at home, it is recommended to remove nail polish before taking oximeter readings.
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Some studies suggest nail polish does not affect readings from digital pulse oximetry devices
There is conflicting evidence regarding the impact of nail polish, particularly gel nail polish, on pulse oximeter readings. While some sources and studies suggest that nail polish can interfere with the accuracy of these readings, others indicate that it does not have a significant impact.
Some studies, such as one conducted by Dr James Purcell and colleagues at University College Cork and South Infirmary Victoria University Hospital, Cork, Ireland, suggest that nail treatments like acrylic nails and nail polishes of different colours do not affect readings from digital pulse oximetry (DPO) devices. Their research experimentally assessed the effect of nail treatments on SpO2 measurements under various physiological conditions, and they concluded that nail treatments did not contribute significantly to a difference in blood oxygen readings and thus had no clinical impact on patient care. This study also highlighted the varying knowledge and understanding of healthcare staff regarding the potential complications of nail treatments on DPO readings.
Additionally, a study by Hemşirelerin found that fingernail polish does not cause a clinically significant change in pulse oximeter readings in healthy individuals. Similarly, a study by Yamamoto et al. noted that orange and light blue gel nails resulted in a statistically significant increase in SpO2 readings on a Masimo device, but these findings contradicted those in the existing literature.
Another study by Aggarwal et al. reviewed the impact of fingernail polish on pulse oximetry measurements. While they did not specifically focus on gel nail polish, their work contributes to the growing body of research investigating the potential influence of nail treatments on pulse oximeter readings.
In contrast, some doctors and healthcare professionals continue to recommend removing all nail polish, especially gel nail polish, before taking oximeter readings. This recommendation arises from the concern that nail polish, particularly dark or glittery shades, can interfere with the accuracy of the readings by acting as a strong barrier to the passing of the beam through the pulse oximeter to the nail bed.
It is worth noting that the impact of nail polish on pulse oximeter readings may depend on various factors, including the type of nail polish, the colour, the number of coats, and individual variations in nails and skin pigmentation. More research is needed to definitively conclude the extent to which gel nail polish affects these readings.
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Frequently asked questions
There are conflicting opinions on the matter. Some sources suggest that gel nail polish can cause a 2-3% drop in readings and should be removed before taking an oximeter reading. However, recent studies have shown that nail treatments such as gel nail polish do not affect readings from digital pulse oximetry (DPO) devices used to monitor patients' blood oxygen saturation (SpO2) levels.
Doctors recommend removing all nail polish, gel nail paint, nail extensions, or dark nail polish before taking oximeter readings to avoid any interference with the accuracy of the results.
Nail polish can interfere with pulse oximeter readings by acting as a strong barrier that blocks the infrared light from passing through the nails, thus affecting the accuracy of the readings.
Yes, colours such as blue, green, black, dark red, purple, brown, and orange have been found to cause problems with pulse oximeter readings.
Yes, the pulse oximeter probe light can be taped above the nail bed, or the reusable probe can be rotated so that the light shines on the side of the finger. It can also be placed on other body parts with pulsatile blood flow, such as the ear, nose, lip-cheek, or toes.
