EKG Machines: Swirling the Cardiac Cycle (Part 4)
A Daily Care InstantCheck Real Time ECG Product Review


We are here now at the last part of the Cardiac Cycle article series where in we will discuss the complete cardiac diastole and the regulation of the cardiac cycle.

What is the complete cardiac diastole?

The period of time when the heart relaxes after contraction in preparation for refilling with circulating blood is know as the Cardiac Diastole. Ventricular diastole is when the ventricles are relaxing, while atrial diastole is when the atria are relaxing. Together they are known as complete cardiac diastole.

During ventricular diastole, the pressure in the (left and right) ventricles drops from the peak that it reaches in systole. When the pressure in the left ventricle drops to below the pressure in the left atrium, the mitral valve opens, and the left ventricle fills with blood that was accumulating in the left atrium. Likewise, when the pressure in the right ventricle drops below that in the right atrium, the tricuspid valve opens, and the right ventricle fills with blood that was accumulating in the right atrium.

Knowing the regulation of the cardiac cycle

Cardiac muscle has automaticity, which means that it is self-exciting. This is in contrast with skeletal muscle, which requires either conscious or reflex nervous stimuli for excitation. The heart's rhythmic contractions occur spontaneously, although the rate of contraction can be changed by nervous or hormonal influences, exercise and emotions. For example, the sympathetic nerves to heart accelerate heart rate and the vagus nerve decelerates heart rate.

The rhythmic sequence of contractions is coordinated by the sinoatrial (SA) and atrioventricular (AV) nodes. The sinoatrial node, often known as the cardiac pacemaker, is located in the upper wall of the right atrium and is responsible for the wave of electrical stimulation that initiates atrial contraction by creating an action potential. Once the wave reaches the AV node, situated in the lower right atrium, it is delayed there before being conducted through the bundles of His and back up the Purkinje fibers, leading to a contraction of the ventricles. The delay at the AV node allows enough time for all of the blood in the atria to fill their respective ventricles. In the event of severe pathology, the AV node can also act as a pacemaker; this is usually not the case because their rate of spontaneous firing is considerably lower than that of the pacemaker cells in the SA node and hence is overridden.

We are stopping here for now to introduce yet another remarkable product from the Daily Care brand which is the Daily Care InstantCheck Real Time ECG as being listed EKGShop.Com site which recommends this product to use as being a trusted brand used by most medical centers and professionals.
 
The Daily Care InstantCheck Real Time ECG is known as the all-in-one solution wherein InstantCheck is being used to pre-screen patients, to remotely detect arrhythmias, and to monitor existing conditions. This EKG has a perfect Afib monitor that features Irregular heartbeat warning, aside from its capability to record, review, download and record again. It has 20 memory sets, so you can review up to 20 rhythm strips for the LCD, in addition to the USB feature, so you can download and store all measurements on your PC.
 
This said EKG Machine has up to $30 reimbursement per test. It has a recording through the thumbs or standard electrodes. Also, this ECG Machine has 20 records internal memory.

Aside from the abovementioned specs, this EKG also includes these features: LCD displays: ST Segment, QRS Interval, Irregular Heart Beat warning, Heart Rate, possibility to review recorded ECGs strips on the LCD, single Lead Standard USB connection: PC ready, comes with software for storing and reviewing of the recorded rhythm strips, and may be integrated to the Cardiac E-Health System with optional modem.

Moreover, if you buy EKG on our website (www.ekgshop.com), we offer a 3-year manufacturers warranty.  You can also avail for a 1 year extended warranty which is available for $ 199 only. Extended warranty plans available including free loaners and our exclusive Rapid Response Service.