Physicians use electrocardiograms investigations in evaluation of any abnormal heart disease symptoms. Patients who may require these tests are elderly individuals who experience sudden onset of weakness or fatigue or chest pain. It can also to investigate causes of sudden onset of rapid heartbeats.
In individuals who have a strong family history of heart disease and over the age of 40 years, ECG/EKG testing are used to detect any early signs of heart disease.
The optimum methodologies used to describe a doctors analysis of EKG / ECG testing is that they provide a window to how a healthy heart would look. This is the easiest way for them to see differences in heart rhythm, heart rate and other patterns of the heart electrical impulses. In cases where a patient's heart shows abnormalities, additional testing is usually ordered to determine the nature of the problem, but first doctors will try to identify recurring patterns over time. In additions to these testing, physicians also use the ECG/EKG investigation to analyze the effects of medications or drugs.
Traditionally, 12-Lead ECG is performed at physicians clinic or in hospital. The downside to this type of testing is that it only records a few minutes of time. Since so many heart conditions are not occurring all of the time, this type of test is insufficient in detecting these problems.Also they require trained technicians to perform these investigations.
Nov 25, 2010
Purchasing a Vital Signs Monitor for Your Medical Practice
1. Vital Signs Monitoring Systems can be divided into three groups based on acuity: low, medium, and high. These three categories represent the care settings and the types of patients to be monitored.
2. Low acuity monitors perform basic vital signs monitoring, and may be used for outpatient surgical applications with a low level of monitoring.
3. Medium acuity monitors are found in a variety of settings, including the emergency department, intermediate care unit, and general medical/surgical floors. These may be modular or configured with other add-on modules.
4. High acuity monitors are used in CCU and OR environments, or in post anesthesia care units. They may be modular or configured with other add-on modules.
5. Using a LAN based system, central-monitoring stations should display and control data from bedside monitors, in a way that a failure of any bedside monitor or central station display will not affect the performance of the entire system.
6. A monitor should be able to display data from another bedside monitor, including automatic display of alarm information.
7. The central stations should display waveforms, numeric and graphic displays, tabular displays, and calculations.
2. Low acuity monitors perform basic vital signs monitoring, and may be used for outpatient surgical applications with a low level of monitoring.
3. Medium acuity monitors are found in a variety of settings, including the emergency department, intermediate care unit, and general medical/surgical floors. These may be modular or configured with other add-on modules.
4. High acuity monitors are used in CCU and OR environments, or in post anesthesia care units. They may be modular or configured with other add-on modules.
5. Using a LAN based system, central-monitoring stations should display and control data from bedside monitors, in a way that a failure of any bedside monitor or central station display will not affect the performance of the entire system.
6. A monitor should be able to display data from another bedside monitor, including automatic display of alarm information.
7. The central stations should display waveforms, numeric and graphic displays, tabular displays, and calculations.
Nov 23, 2010
Life and Death With Vital Sign Monitors
There are different tools a healthcare professional uses to measure blood pressure.
Many healthcare professionals use a stethoscope and a manual sphygmomanometer to measure your blood pressure. Typically they take the reading above your elbow. The sphygmomanometer has a bladder, cuff, bulb, and a gauge. When the bulb is pumped it inflates the bladder inside the cuff, which is wrapped around your arm. This inflation will stop the blood flow in your arteries. The stethoscope is used to listen for sound of the heartbeat, and no sound indicates that there is no flow. As the pressure is released from the bladder, you will hear the sound of the blood flowing again. That point becomes systolic reading. The diastolic reading is when you hear no sound again, which means that the blood flow is back to normal.
Current technology, now offers portable automatic blood pressure monitors. Some models can be battery operated, take reading from the wrist or arm, and have a memory to keep track of historical readings. Other models can include other vital sign monitoring, such as temperature, heart rate, and oximetry (the amount of oxygen in your blood).
Some manufacturers of blood pressure measuring devices include, WA Baum, Mabis, Omron, American Diagnostic Corporation, and Welch Allyn.
Many healthcare professionals use a stethoscope and a manual sphygmomanometer to measure your blood pressure. Typically they take the reading above your elbow. The sphygmomanometer has a bladder, cuff, bulb, and a gauge. When the bulb is pumped it inflates the bladder inside the cuff, which is wrapped around your arm. This inflation will stop the blood flow in your arteries. The stethoscope is used to listen for sound of the heartbeat, and no sound indicates that there is no flow. As the pressure is released from the bladder, you will hear the sound of the blood flowing again. That point becomes systolic reading. The diastolic reading is when you hear no sound again, which means that the blood flow is back to normal.
Current technology, now offers portable automatic blood pressure monitors. Some models can be battery operated, take reading from the wrist or arm, and have a memory to keep track of historical readings. Other models can include other vital sign monitoring, such as temperature, heart rate, and oximetry (the amount of oxygen in your blood).
Some manufacturers of blood pressure measuring devices include, WA Baum, Mabis, Omron, American Diagnostic Corporation, and Welch Allyn.
Nov 21, 2010
The Keys to Purchasing Finger Pulse Oximeters
There are a few factors that you should consider before buying your finger pulse oximeter and they are as follows:
1. Always know that the best pulse oximeters are available at different prices. The highest price is not often the best in quality and therefore you should choose wisely in terms of what you can afford.
2. Check to make sure the finger pulse oximeter is FDA approved. Even though the oximeters are now certified, a few years the current standards.
3. The main reason for purchasing the oximeter is to measure your oxygen saturation and your pulse rate. Therefore you would only want something that is going to give you accurate and reliable readings.
4. You should also determine if your oximeter is easy to use and if you can read the results clearly through the display. Different devices show the results differently.
For some individuals, having a finger pulse oximeter that they can use at home is quite important. Instead of having to make appointments to go see a doctor or nurse in order to measure their oxygen saturation levels, they can conveniently use a finger pulse oximeter to determine how much oxygen they have in their blood stream.
1. Always know that the best pulse oximeters are available at different prices. The highest price is not often the best in quality and therefore you should choose wisely in terms of what you can afford.
2. Check to make sure the finger pulse oximeter is FDA approved. Even though the oximeters are now certified, a few years the current standards.
3. The main reason for purchasing the oximeter is to measure your oxygen saturation and your pulse rate. Therefore you would only want something that is going to give you accurate and reliable readings.
4. You should also determine if your oximeter is easy to use and if you can read the results clearly through the display. Different devices show the results differently.
For some individuals, having a finger pulse oximeter that they can use at home is quite important. Instead of having to make appointments to go see a doctor or nurse in order to measure their oxygen saturation levels, they can conveniently use a finger pulse oximeter to determine how much oxygen they have in their blood stream.
Nov 19, 2010
Solaris Handheld Pulse Oximeter with Alarm for Finger Good Readings!
With the rate of technological development taking place in this modern era, even medical instruments and devices are fast becoming smaller and more affordable. When it comes to the finger pulse oximeter, the once massive large equipment can now literally fit in your pocket (with many oximeters weighing less than 2 ounces). What the pulse oximeter does is measure the oxygen saturation level in the blood. These more compact models can provide the same valuable data as compared to the ones which are placed on you when you are in the hospital (and it is just as quick). To use a finger pulse oximeter, you place one end of the device on your fingertip and the reading comes up on the screen in a few seconds.
Here's the basis of how the oximeter works in order to provide accurate readings of the oxygen saturation levels in the blood: infrared light is absorbed by oxygenated hemoglobin and the red light is allowed to pass through. On the other hand, the opposite is said for the deoxygenated blood. Beams of red light and infrared light are directed from the oximeters through your finger and goes onto the photo detector on the opposite end. The photo detector then calculates the ratio of the red light to the infrared light. This then gives the oxygen saturation level. Persons who are healthy will have an oxygen saturation level between 95% to 99%. The oxygen saturation level indicates how well the heart, lungs and blood are supplying organs with oxygen.
There is a lot of competition when it comes to selling the finger pulse oximeter as there are several manufactures such as Nonin, GTek, Minolta, Maxtec and many more. However, the competition is good as this can mean getting a better price and allowing more individual of different backgrounds to have their own finger pulse oximeter. Many of these medical devices are FDA approved and show both your oxygen level and your pulse rate.
Here's the basis of how the oximeter works in order to provide accurate readings of the oxygen saturation levels in the blood: infrared light is absorbed by oxygenated hemoglobin and the red light is allowed to pass through. On the other hand, the opposite is said for the deoxygenated blood. Beams of red light and infrared light are directed from the oximeters through your finger and goes onto the photo detector on the opposite end. The photo detector then calculates the ratio of the red light to the infrared light. This then gives the oxygen saturation level. Persons who are healthy will have an oxygen saturation level between 95% to 99%. The oxygen saturation level indicates how well the heart, lungs and blood are supplying organs with oxygen.
There is a lot of competition when it comes to selling the finger pulse oximeter as there are several manufactures such as Nonin, GTek, Minolta, Maxtec and many more. However, the competition is good as this can mean getting a better price and allowing more individual of different backgrounds to have their own finger pulse oximeter. Many of these medical devices are FDA approved and show both your oxygen level and your pulse rate.
Nov 17, 2010
Philips Zymed XT 96 Hour Recorder to Keep Your Heart on Track!
Biometric monitors are used in measuring biological data. Depending on the purpose, there are different kinds of biometric monitors that can be used. In the case of an electrocardiogram (ECG) machine, it is a device made to measure the activities of the heart, working by recording electronic impulses sent out by the heart in between heartbeats. With a built-in screen or print outs, it provides medical personnel with the needed results.
Kinds to choose from
ECG biometric monitors also come in two kinds, ambulatory and interpretive. Ambulatory ECG monitors feature the Holter monitor, a small recorder that needs to be worn by the patient everyday. Using that, a graphic record of the heart's electrical currents is made in order to detect abnormal activities that may be due to stress and emotional or sleep problems.
Two models of the ambulatory ECG monitor are available: intermittent and continuous. Intermittent models are worn for weeks or months although recording only happens once in a while, while continuous models, as the name suggests, continuously monitors heart activity for two days. Interpretive ECG monitors, on the other hand, use charts in interpreting heart activities. Usually featuring an operation with a 12-lead rhythm, it can run automatically or be manually operated. Interpretive ECG monitors also commonly use interpretation software like pediatric analysis and pacemaker enhancements.
How to choose
Look for an upgradeable model which allows for long-term use while at the same time giving room to address changes that may be required. That way, you won't have to keep changing units just to keep up with your needs. For accurate displays and print outs, look for one that comes with an alphanumeric keyboard. An ECG machine that features a large LCD screen also makes things easier for you since results are easier to read out.
Kinds to choose from
ECG biometric monitors also come in two kinds, ambulatory and interpretive. Ambulatory ECG monitors feature the Holter monitor, a small recorder that needs to be worn by the patient everyday. Using that, a graphic record of the heart's electrical currents is made in order to detect abnormal activities that may be due to stress and emotional or sleep problems.
Two models of the ambulatory ECG monitor are available: intermittent and continuous. Intermittent models are worn for weeks or months although recording only happens once in a while, while continuous models, as the name suggests, continuously monitors heart activity for two days. Interpretive ECG monitors, on the other hand, use charts in interpreting heart activities. Usually featuring an operation with a 12-lead rhythm, it can run automatically or be manually operated. Interpretive ECG monitors also commonly use interpretation software like pediatric analysis and pacemaker enhancements.
How to choose
Look for an upgradeable model which allows for long-term use while at the same time giving room to address changes that may be required. That way, you won't have to keep changing units just to keep up with your needs. For accurate displays and print outs, look for one that comes with an alphanumeric keyboard. An ECG machine that features a large LCD screen also makes things easier for you since results are easier to read out.
Nov 15, 2010
Why Buy Doppler Ultrasound Equipment?
Ultrasonography is a less invasive and less expensive modality which is easy to schedule and perform in an emergency situation. Sonographers can be called to perform this as an alternative to arteriography and venography, which involves injecting dye into the blood vessels so that they can be detected as X-ray images.
Duplex Ultrasound
A duplex ultrasound is a combination of tests to see how blood moves through your arteries and veins. Duplex means that two types of ultrasonography are employed: regular B-mode ultrasounds, and Doppler ultrasounds. The conventional ultrasound shows the structures of your blood vessels and Doppler shows the movement of your red blood cells through the vessels and the sound of the frequency shifts.
Doppler Ultrasound Semantics
It is interesting to note that in sonography, the word Doppler is used similar to the way the word Kleenex is. People use tissues and refer to them as Kleenex when they're not. In sonography, the word Doppler is used when true scientific Doppler is not what is really being done. It's similar, but different.
The technical point to know is that Doppler Ultrasound equipment is technically concerned with sound frequency, whereas in ultrasound applications we compare the PHASE of the sound. In what we do, Phase Shifts are more detectable and are what we measure, not frequency, but it's similar so it's referred to as Doppler sonography. Semantics!
Duplex Ultrasound
A duplex ultrasound is a combination of tests to see how blood moves through your arteries and veins. Duplex means that two types of ultrasonography are employed: regular B-mode ultrasounds, and Doppler ultrasounds. The conventional ultrasound shows the structures of your blood vessels and Doppler shows the movement of your red blood cells through the vessels and the sound of the frequency shifts.
Doppler Ultrasound Semantics
It is interesting to note that in sonography, the word Doppler is used similar to the way the word Kleenex is. People use tissues and refer to them as Kleenex when they're not. In sonography, the word Doppler is used when true scientific Doppler is not what is really being done. It's similar, but different.
The technical point to know is that Doppler Ultrasound equipment is technically concerned with sound frequency, whereas in ultrasound applications we compare the PHASE of the sound. In what we do, Phase Shifts are more detectable and are what we measure, not frequency, but it's similar so it's referred to as Doppler sonography. Semantics!
Nov 13, 2010
The Summit Doppler Vista AVS Advanced Vascular System for the Best Diagnosis!
While B-mode ultrasound can show images from within the body, the movement of blood and its speed cannot be measured with it alone.
Doppler ultrasound can detect and measure the movement of red blood cells as they cause a change in pitch of the reflected sound waves (called the Doppler effect). There would be no phase shift (rate of change in pitch) if the blood wasn't moving.
How Doppler Ultrasound is Performed
Ultrasound technicians trained in ultrasound imaging (sonographers) place a probe (transducer) over the area of the body being diagnosed. First an image of the region of interest is acquired. Then the vessel is located and the transducer is angled so that the best Doppler shift can be obtained. The best location would be to be able to look directly into the vessel (much like looking into a tunnel). Because of how the vessels are located in the body this is of course often not possible. Thus maneuvering the probe or steering the ultrasound/Doppler beam will make this plausible.
Acquired Doppler information can be heard, shown on a chart (much like and EKG) or in colored blood streaming through the vessel.
Types of Doppler Ultrasound
Commonly, two types of Doppler transducers are used Continuous Wave Doppler and Pulsed Wave Doppler.
Continuous Wave Doppler ultrasound transducers use two crystals, one to send and one to receive echoes. The transmitter emits a continuous sinusoidal wave so a receiver can detect the phase shift. An audible sound is recorded and analyzed. CW Doppler provides high sensitivity to low velocities and detection of high velocities without aliasing. However, CW Doppler cannot distinguish between the sending and receiving signals or extraneous echoes. CW Doppler ultrasound does not produce images like Pulsed Wave Doppler does.
Pulsed-Wave Doppler Ultrasound is combined B-mode to produce images of a certain structure. PW uses a pulsed echo system, the PW transducer both sends and receives the signal. It sends in short bursts, on and off, so it can receive when it is not sending.
Doppler ultrasound can detect and measure the movement of red blood cells as they cause a change in pitch of the reflected sound waves (called the Doppler effect). There would be no phase shift (rate of change in pitch) if the blood wasn't moving.
How Doppler Ultrasound is Performed
Ultrasound technicians trained in ultrasound imaging (sonographers) place a probe (transducer) over the area of the body being diagnosed. First an image of the region of interest is acquired. Then the vessel is located and the transducer is angled so that the best Doppler shift can be obtained. The best location would be to be able to look directly into the vessel (much like looking into a tunnel). Because of how the vessels are located in the body this is of course often not possible. Thus maneuvering the probe or steering the ultrasound/Doppler beam will make this plausible.
Acquired Doppler information can be heard, shown on a chart (much like and EKG) or in colored blood streaming through the vessel.
Types of Doppler Ultrasound
Commonly, two types of Doppler transducers are used Continuous Wave Doppler and Pulsed Wave Doppler.
Continuous Wave Doppler ultrasound transducers use two crystals, one to send and one to receive echoes. The transmitter emits a continuous sinusoidal wave so a receiver can detect the phase shift. An audible sound is recorded and analyzed. CW Doppler provides high sensitivity to low velocities and detection of high velocities without aliasing. However, CW Doppler cannot distinguish between the sending and receiving signals or extraneous echoes. CW Doppler ultrasound does not produce images like Pulsed Wave Doppler does.
Pulsed-Wave Doppler Ultrasound is combined B-mode to produce images of a certain structure. PW uses a pulsed echo system, the PW transducer both sends and receives the signal. It sends in short bursts, on and off, so it can receive when it is not sending.
Nov 11, 2010
The GE Mac 1200 ECG at the Perfect Price!
An ECG sensor has a very heavy workload in modern medicine. Used all over the world, the ECG or electrocardiogram measures the electrical activity of the heart and can point the way towards a wide range of different issues with the main blood pump of the body.
The heart beats in a regular rhythm to pump blood throughout the body. It does this by contracting one area of itself to force blood out while another area relaxes to let blood in. The rhythm is kept up by the natural pacemaker of the heart known as the sinoatrial node. This node sends out electrical impulses that keep the heart beating regularly.
The electrical signals can be measured and tracked, allowing doctors to follow the rhythm of the heart and determine if there are any issues. In an ECG test, the electrical impulses made while the heart is beating are recorded and usually shown on a piece of paper. This is known as an electrocardiogram, and records any problems with the heart's rhythm, and the process of heart beat through the heart, which may reveal underlying issues.
An ECG sensor is what actually reads the electrical impulse being generated by the heart and allows that signal to be recorded and tracked. Usually ECG's are done when people are having trouble breathing, chest pain, or feeling like their own heart beat is abnormal. One of the most common usages of an ECG is to look for evidence of coronary disease in the arteries. The one problem, however, is that for a number of patients the ECG recording at rest can be normal while it might be abnormal during exercise. Because of this, there are ways to do ECG's while a patient is exercising.
ECG's can show a number of different things. They'll show if a patient has had a heart attack, the impact heart medicines might be having on the heart, or if the heart has a slow or fast rhythm. The test can prove thickening of the heart muscle itself from chronic high blood pressure or even if there are too few minerals in the blood. ECG's are non invasive, mostly comfortable (though some patients don't enjoy the exercise part of the stress ECG's) and easy to administer. All in all a very impressive result from such a common ECG sensor.
The heart beats in a regular rhythm to pump blood throughout the body. It does this by contracting one area of itself to force blood out while another area relaxes to let blood in. The rhythm is kept up by the natural pacemaker of the heart known as the sinoatrial node. This node sends out electrical impulses that keep the heart beating regularly.
The electrical signals can be measured and tracked, allowing doctors to follow the rhythm of the heart and determine if there are any issues. In an ECG test, the electrical impulses made while the heart is beating are recorded and usually shown on a piece of paper. This is known as an electrocardiogram, and records any problems with the heart's rhythm, and the process of heart beat through the heart, which may reveal underlying issues.
An ECG sensor is what actually reads the electrical impulse being generated by the heart and allows that signal to be recorded and tracked. Usually ECG's are done when people are having trouble breathing, chest pain, or feeling like their own heart beat is abnormal. One of the most common usages of an ECG is to look for evidence of coronary disease in the arteries. The one problem, however, is that for a number of patients the ECG recording at rest can be normal while it might be abnormal during exercise. Because of this, there are ways to do ECG's while a patient is exercising.
ECG's can show a number of different things. They'll show if a patient has had a heart attack, the impact heart medicines might be having on the heart, or if the heart has a slow or fast rhythm. The test can prove thickening of the heart muscle itself from chronic high blood pressure or even if there are too few minerals in the blood. ECG's are non invasive, mostly comfortable (though some patients don't enjoy the exercise part of the stress ECG's) and easy to administer. All in all a very impressive result from such a common ECG sensor.
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