An ECG machine, also called an EKG machine, can quickly and effectively measure the rhythm and strength of those beats. So, if your heart experiences abnormal activity, it's important to monitor it regularly.

What is Electrocardiography?
Electrocardiography is the process of producing an electrocardiogram (ECG or EKG), which is a recording of the heart's electrical activity, a graph of voltage versus time of the heart's electrical activity using electrodes placed on the skin.

What is an ECG Machine?
ECG or EKG machine, also known as an Electrocardiograph machine uses a non-invasive diagnostic test that evaluates the heart's electrical system to assess the health and functioning of the heart.

How does an ECG Machine Work?
Each beat of the heart is triggered by an electrical impulse, normally generated from special cells in the upper right chamber of the heart. The cells in the heart go through depolarization and repolarization as the heart beats. The ECG machine records these electrical signals by attaching flat electrodes to the outer surface of the skin and a graph of the electrical activity inside the heart is generated.

Types of ECG Devices
Doctors use several types of ECG machines to check for a variety of cardiac (heart) or pulmonary (lung) conditions.

The biggest difference between regular ECG machines and Wearable ECG monitors is that unlike regular ECG Machines, which use 12 leads, the wearable ECG monitor uses just one. In the simplest terms, the 12 lead is taking lots of readings about your heart and the single lead is taking just one.

Tips on what to look for in a Portable ECG Machine

• Accuracy and Effectiveness of Portable ECG Machine

The main objective of the Portable ECG Machine is to indicate the condition of the heart as per its electrical activities. Thus, the key selection criterion is to find one that produces accurate results within its operating range reliably and consistently. This ensures that the course of action after measurement of the heart's functioning will be the right one to counteract any abnormalities/ fluctuations detected.

• Connectivity

Some ECG monitors come with Bluetooth connectivity and can connect to smartphone devices to track the user's data and readings.

• Memory

This allows the user to save previous readings, and it can be useful if they want to show the results to a doctor.

• Size and Portability

If a person intends to use an ECG monitor while traveling, they should check its dimensions to ensure that it is easy to carry around.

• Measurement Time

Most devices take 30 seconds to take one reading.

• Modes

Some monitors allow continuous monitoring. These are the ones that you should prefer for a better idea about the heart's overall functionality.

Summary
As there are many models from different manufacturers in the market to choose from, check the features they offer and choose the one that best suits your needs.

Q: Please can you give a brief introduction to ultrasound devices? How do they work?
A: Ultrasound devices use sound waves to image the organs of the body safely, without the use of radiation. The sound waves are produced by applying a current to a piezoelectric crystal housed in a transducer. The crystal alters shape and creates a sound wave.

When the transducer containing the crystal is applied to the patient the sound enters the body and is then reflected back to the transducer when it encounters an interface. The sound wave that is reflected back to the transducer changes the shape of the crystal and creates an electrical current. The intensity of the returning sound wave determines the intensity displayed on the image.

A gray-scale image is then created depending on the intensity of the returning echoes ranging from black, which represents fluid in the body, mid–greys which may represent organs such as the liver and uterus through to white which represents highly reflective objects such as bone.

Each organ of the body has its own characteristic pattern of echoes – disease processes change the normal echo patterns of organs enabling detection.

Q: What are ultrasound devices used for?
A: Ultrasound imaging has many clinical applications including fetal monitoring, vascular imaging, procedure guidance, and general diagnostic imaging.

Handheld ultrasound systems are intended to be used as an adjunct to the physical exam where more expensive systems are not available such as:

-Diagnosis. Ruling in pathology for clinical examinations of the abdomen, the pelvis, obstetric, cardiac, and the peripheral vascular system.

-Screening. These types of procedures are the so-called “quick-look” examinations to rapidly determine if the patient should proceed to a further, more exhaustive ultrasound examination or perhaps another diagnostic test. A specific example of a screening tests is Abdominal Aortic Aneurysms (“AAA”) screening.

-Guidance. This is one of the fastest growing applications of portable ultrasound systems. Handheld systems are suitable for large vessel vascular/venous access, pleural and abdominal fluid drainage guidance, liver biopsy guidance, and bladder aspiration.

Q: When were handheld ultrasound devices first developed?
A: There is no universally accepted definition of “handheld” ultrasound devices. Some manufacturers have used the term “handheld” with ultrasound products as large as a laptop computer.

Through working extensively with clinicians, it is developed the view that a true “handheld” should be small enough to fit in one’s pocket or to comfortably hang around a clinician’s neck, like a stethoscope, and that the device should weigh no more than one pound (450 grams).

Q: What are the benefits of a handheld ultrasound device?
A: Handheld ultrasound is of greatest benefit when due to size, portability, or cost, larger and more expensive ultrasound systems are unavailable. Because of their more convenient size and substantially lower cost, handheld ultrasound devices are entering a range of clinical settings where previously ultrasound use was impractical.

The fastest growth in the ultrasound market has come from portable systems sold into “emerging markets” like emergency medicine and intensive care, and handheld ultrasound is continuing this trend.

Rural and remote doctors who previously had limited access to ultrasound departments can also assess their patients and rule-in whether they need urgent medical attention requiring travel or air lifting.

Emergency and Intensive Care physicians can assess their patients in the department saving time and improving patient management rather than waiting to transport the patient to and from the ultrasound department.

Obstetric staff are able to quickly and easily determine the presence of a baby’s heart beat and fetal position.

Hand held ultrasound devices allow simple effective ultrasound examinations to be performed at the point of care – speeding up decision making by the clinician.

This afternoon, the sales manager received a message from a Nigerian customer. A few short sentences showed his satisfaction with our after-sales service.

Although each product will undergo a series of inspections before shipment to ensure the performance, appearance, safety and other aspects of the machine’s quality. However, some customers will encounter some problems in use. And because of the distance, after-sales online technical guidance is particularly important.

After receiving this project of after-sales, our after-sales engineer Jackson contacted the customer as soon as possible to get the actual situation at first. Good after-sales service is premised on protecting the interests of customers, and Jackson knows this truth well. In this case, it is obvious that it is in the customer’s interest to restore the machine to use ASAP. Therefore, Jackson did not waste a bit of time, even working overtime until late at night to check the past data, and finally found a solution. In order to facilitate customers’ understanding, video connection and online guidance were adopted to finally make the machine resume operation.

All along, Dawei strives to provide customers with better services, attract customers with high-quality services, and retain customers with high-quality services.