How Pulse Oximeters Work Explained Simply.

Introduction
Pulse oximeters measure how much of the hemoglobin in blood is carrying oxygen (oxygen saturation).

If you work in healthcare (or have been patient !) you are very likely to have come across pulse oximeters. You can find them in areas such as operating rooms, recovery, critical care, wards, and ambulances.

Pulse oximeters are in common use because they are:
• non invasive
• cheap to buy and use
• can be very compact
• detects hypoxaemia earlier than you using your eyes to see cyanosis.

Oxygen Saturation
Pulse oximeters measure oxygen saturation. Before we learn the principles of how pulse oximeters work, we need to have an understanding of what oxygen saturation is.

We all know that we need oxygen for life. ( Some of you may find this section a little too basic. In that case, to skip this short section, click this link to go to next section Physical properties used in pulse oximetry)

Oxygen enters the lungs and then is passed on into blood. The blood carries the oxygen to the various organs in our body. The main way oxygen is carried in our blood is by means of hemoglobin. You can imagine hemoglobin molecules( Hb) as “cars” and the “roads” being our blood vessels. The oxygen molecules get into these cars and travel around the body till they reach their destination.

Physical properties used in pulse oximetry
Pulse oximetry uses light to work out oxygen saturation. Light is emitted from light sources which goes across the pulse oximeter probe and reaches the light detector.

If a finger is placed in between the light source and the light detector, the light will now have to pass through the finger to reach the detector. Part of the light will be absorbed by the finger and the part not absorbed reaches the light detector.

The amount of light that is absorbed by the finger depends on many physical properties and these properties are used by the pulse oximeter to calculate the oxygen saturation.

The amount of light absorbed depends on the following:
1. concentration of the light absorbing substance.
2. length of the light path in the absorbing substance
3. oxyhemoglobin and deoxyhemoglobin absorbs red and infrared light differently

Don’t worry ! All the above will be explained in the next sections:

The physical properties that a pulse oximeter employs will be explained using the probe shown below. A finger is shown inserted into the probe. Above the finger are the light sources that emit light. In the finger is an artery which carries the blood the pulse oximeter is interested in and a vein through which the blood leaves the finger. Below the finger is the light detector.

Heart Rate Information

Even though the heart rate is a huge element to achieving an optimal workout, and its been around forever, many individuals do not know what theirs is, or how to measure it, or even to care about it. So I am going to clarify this simple yet important component to fitness.

Over time, your heart becomes more efficient at delivering the oxygen and fuel required by the muscles to maintain this higher level of performance. The skeletal muscles also becomes better at extracting oxygen from the bloodstream. With continued consistent exercise, the cardiovascular system continues to consistently improve.

– track your Oxygen Saturation Level while you exercise, getting a heart rate monitor is helpful
– resting heart rate (measured in beats per minute) is averagely about 70 bpm for men and 75 bpm for women
– know your max heart rate – subtract your age from 220. Example if you are 28 years old your max heart rate would be 192, it’s going to be an estimated number and will vary for each person but this is the number you don’t want to go over
– find your target heart rate, there are a few methods for doing this
– Karvonen method
The Karvonen method factors in Resting Heart Rate (HRrest) to calculate Target Heart Rate (THR):
THR = ((HRmax “” HRrest) Ã- %Intensity) + HRrest
Example for someone with a HRmax of 180 and a HRrest of 70:
50% intensity: ((180 – 70) Ã- 0.50) + 70 = 125 bpm
85% intensity: ((180 – 70) Ã- 0.85) + 70 = 163 bpm
– Zoladz method

An alternative to the Karvonen method is the Zoladz method, which derives exercise zones by subtracting values from HRmax.
THR = HRmax “” Adjuster ± 5 bpm
Zone 1 Adjuster = 50 bpm
Zone 2 Adjuster = 40 bpm
Zone 3 Adjuster = 30 bpm
Zone 4 Adjuster = 20 bpm
Zone 5 Adjuster = 10 bpm
Example for someone with a HRmax of 180:
Zone 1 (easy exercise) : 180 – 50 = 130; ± 5 ? 125 to 135 bpm
Zone 4 (tough exercise): 180 – 20 = 160; ± 5 ? 155 to 165 bpm
– And a third and less scientific way is some people simply increase their goal heart rate by 5 each week
– heart rate abnormalities, while not common do exist and would be identified by your doctor, if you experience these you should discuss all exercise plans with your physician before beginning
– Know how to take your pulse properly. Place your index and middle fingers directly under your ear, then slide your fingers down until they are directly under your jawbone, pressing lightly. Start with zero on the first beat and count for 10 seconds then multiply by six. Always check your pulse frequently throughout your workout to make sure you within your target Heart rate zone.
– Know when to slow down. Even without a heart rate monitor, you need to know when to begin to slow back down. A good indicator is becoming breathless, you should be able to talk and carry on mild conversation while exercising, not be breathless.
– don’t just stop, cool down

Knowing this simple information will help you greatly in evaluating your progress when training to get fit, or when training to compete. You can develop your training sessions and know what you need to change or add in your program by being in tune to your Heart Rate.

Target heart rate training provides a scientific approach to tracking your improving levels of fitness. With a decent heart rate monitor, it becomes easier to monitor your workouts. It allows you to measure exercise intensity independently of what activity is being performed by focusing on heart rate as the measure of exercise intensity.

If you haven’t been making the kind of progress you know you are capable of, you might consider this methodical approach to improving fitness!

Feature And Quality Of SM-110 Finger Pulse Oximeter

In order to stay fit and healthy it is very essential you always keep track on your pulse rate and blood oxygen level. In this regard now you can buy finger pulse oximeter to get reliable readings.

Most of the time we feel low because of our poor health and due to that our regular work schedule get disturbed. In order to stay fit we should always know about pulse rate and oxygen level of our blood. It is essential to record pulse and level of oxygen as it will help us in knows whether our heart is getting sufficient oxygen or not. Further, if you are suffering from some of the chronic diseases like asthma, diabetes, and any other cardiovascular disease then you can monitor you health condition and can take proper precaution at right time.

For getting recording of pulse rate and blood oxygen level people required to visit their physicians, which was tiring and time taking business. However, now it is made easier by advanced technology by introduction of finger pulse oximeter. It is a simple device yet it is very reliable and efficient at recording pulse rate and level of oxygen of blood. Initial the device was very rare in market but now you can buy it easily from online store at affordable prices.

However, it is essential you should check some of the features of fingure pulse oximeter before booking your order. The device should provide accurate reading of SpO2 and at the same time it should be offer swift readings. Further, another feature that you should check is that the device should provide convenient pulse measurement facility. In order to get clear readings the device should be with large digital LED display.

The best quality finger pulse oximeter should be always proves to be best for people of all age group and it would have large memory to keep the record of large number of readings. Thus, by keeping few features and qualities in mind you can buy best finger pulse oximeter.

A New Methodology For Measuring Oxygen In Blood: Pulse Oximeter

Have you ever wondered if we really can measure the oxygen levels in our body through easy devices?

There have been various studies going on to understand if this concept is really possible or not, and the result that came into the picture was that yes it’s possible to measure the levels of oxygen in our body’s metabolism. The pulse oximeter was founded and invented in 1978 by William “Bill” New, MD, PhD, and then a member of Stanford’s anesthesia clinical faculty, usedthe red and infrared light to measure the blood’s color. And the results came out: the redder the blood, the higher the oxygen was present. And then prior to its invention, surgical teams had no easy way to monitor the exact percentage of oxygen. Also when the color came out to be blue: it meant oxygen was very low in the body.
Like the new pulse oximeter- determines the level of oxygen by reading the blood’s color. Apart from the blood cells, it reaches too many of your tissues and undergo the process of oxygen reading. The pulse oximetry’s blind spots is one which usually occurs during the bypass surgery. Also, because the pulse oximeter eventually relies on the pulsing of a patient’s blood vessels.
And then when we talk about what we can really serve you to is: ‘Santa medical Generation 2 SM-165 Fingertip Pulse Oximeter’. With this new product which is available online, here are some amazing features of it:
• Newly Upgraded Version:

It measures the pulse rate quickly and accurately and understand your hemoglobin levels.

• OLED Multidirectional Display:

The display of the oximeter is ‘Rotatable’ and allows you to view your results in any direction plus Pulse wave, Pulse Rate, bar graph, SpO2 level and battery level.

• Type of Oximeter you’ll get:

Fingertip Pulse Oximeter is what you’ll get from our end. The portable and easiest one to carry. Containing User Manual, 2-AAA Batteries, plus no-hassle 1 year warranty and friendly customer service.
So are you taking this amazing product and making your healthy lifestyle a better one? With knowing what really is going in your body.

Finger Pulse Oximeter SM-1100S Review

Sports enthusiasts and athletes have extreme passion for several kinds of sports and exercises that are one hundred percent good for their health. To engage in different kinds of sports and exercises everyday does not only provide a person with enjoyable and excellent sports experiences. But also, such action can help a person to stay healthy and free from several kinds of diseases forever. To make sure that these activities will really enhance the good health of athletes and other sport enthusiasts, a pulse oximeter must be available always in their wrists or hands. A pulse oximeter is a special device that can help the sports enthusiasts to monitor the progress of oxygen saturation in the bodies while exercising or playing. This device can also help them to monitor their pulse rate while enjoying their favorite sports activities and exercises. And one of the best examples of this product in the market nowadays is the all new Finger Pulse Oximeter SM-1100S by Santamedical.

Who could buy this Product?
The Finger Pulse Oximeter SM-1100S of Santamedical is highly recommended to those individuals who want to live a healthier lifestyle in this world nowadays with the use of several kinds of sports and exercises. This device can be purchased by athletes and other individuals who have extreme passion for sports and outdoor activities. This product is not allotted for medical purposes. In other words, physicians can never use it in their profession.

Product Description
The all new Finger Pulse Oximeter SM-1100S is one of the best brands of oximeter for the athletes and sports lovers who are interested to monitor the oxygen saturation in their bodies as the time passes by. This product can help its users to become more efficient in maximizing the health benefits that different kinds of sports and exercises that each of them can perform in their daily living. It is because this product is equipped with a reliable sensor that can detect the pulse rate of its user from time to time while exercising or enjoying several kinds of sports. It includes a carry case and a neck or wrist cord in its full package. And the consumers will never be disappointed with its performance since its maximum power supply can help it to function smoothly for almost thirty hours continuously.

Product Features
Finger Pulse Oximeter SM-1100S possesses the following features that are in hundred percent reliable when it comes to the process of determining the oxygen saturation and pulse rate of a person while performing several types of exercises or while playing a certain type of sport:
• Two AAA Batteries – this feature serves as the main source of power of the product. It helps the oximeter to function smoothly and continuously for almost thirty hours without suffering from power interruptions. These batteries also help the product to become more efficient and reliable when it comes to power consumption.

• Digital OLED Display - Finger Pulse Oximeter SM-1100S comes with a very reliable digital OLED screen where all of the elements and available characters are very easy to read. This digital screen serves as one of the best features of this oximeter. And in its display, the consumers will be able to see the current pulse rate of their bodies while playing or exercising.

• Carry Case – this feature helps the consumers of the product that was stated to carry it and secure it more effectively while in outdoor places. It can be used also as a primary storage for the product while not in use.

• Neck/Wrist Cord – this feature is something which can be used by the consumers of the oximeter to wear it properly while enjoying their favorite outdoor activities and sports.

Customer Reviews and Scores
Finger Pulse Oximeter SM-1100S is a remarkable oximeter in the market nowadays. It can be purchased in Amazon at a very affordable price. Most of its users gave positive feedbacks to its performance. It can provide a person with accurate set of information about the current oxygen saturation and pulse rate in the body of its wearer. Although it is not recommended for healthcare providers, some nurses still prefer to use it in their profession because of the wonderful performance that it has as a pulse oximeter. Right now, the current score of the product is 4.8 stars out of 5 which is already a sign that it really satisfies the needs of its users.

Santamedical Sm-165 Have 6 Mode LED Display

Santamedical SM-165 is a state of the art device which has got six mode LED display which is easily rotatable and allows versatility of viewing angles. The device is powered by 2 AAA sized batteries. It also comes with a lanyard. The device is simple to use and finds it utility amongst sports persons and mountain climbers. The device is available on Amazon.

Pulse oximeters are devices meant for measuring the oxygen saturation of hemoglobin and have got significant role in medical field for monitoring of many medical conditions. However with increasing advancements, the size of the device is reducing day by day and the utility of the device has found it's way to out of hospital settings as well. Now these devices are being widely used by sports enthusiasts such as mountain climbers, sports persons, athletes etc. 

Santamedical is an established name in manufacturing healthcare products including electro-medical equipments. Santamedical SM-165 is one such high fidelity device which has got good accuracy with a fairly compact size. The device is fitted with 6 mode LED display which is easily rotatable and can be viewed from various angles. The device has got a simple single button de-sign along with self adjusting finger clamp which keep the device simple for use. The device measures SpO2 and pulse simultaneously. This pulse oximeter is powered by two AAA sized batteries which are included within the pack. Also included in the pack are a lanyard and a user manual. The device also meets the certification criteria by US FDA and is fairly quick in measurements.

The pulse oximeter comes with the 100 percent money-back guarantee from the manufacturer. If you don't like the product, you can ship it back and get your money back. The device is readily available on Amazon & Walmart and just a click away from you. So just order your device today and get help in scheduling your work out plans.