Dysrhythmia Research Paper Example | Topics and Well Written Essays - 750 words

Dysrhythmia - Research Paper Example Oxygenated blood from the lungs is pumped to the body cells, the blood returns to the heart devoid of oxygen and is pumped to the lungs for oxygenation. The process repeats itself several times without ever halting (Balachander & Rajagopal, 2011). Basic normal EKG waveform morphology The electrocardiogram (EKG) works as a voltmeter, using twelve leads (electrodes) placed on specific areas of the body. It basically records the electrical activity of the heart at the body surfaces. Ordinarily, the SA node depolarizes spontaneously, initiating an action impulse which swiftly propagates through the atria, leading to atria contraction, then proceeds to the AV node before getting to the Purkinje system to the ventricles (Stein, 2012). This leads to the ventricular contraction. The EKG consists of waves and complexes hence the wave form morphology. In a normal sinus rhythm, the waves and complexes include the P wave, PR segment, PR Interval, T wave, QRS Complex, QT Interval and the ST Segme nt. The waves and complexes work in a complex system that consequently measure electrical activity of the heart. At the onset is the P wave that lasts not more than 0.12 seconds, usually occasioned by the atria’s depolarization. The nature of the P wave is smooth and positive (Stein, 2012). The PR interval then picks and ends at the QRS complex which signifies the onset of ventricular depolarization. Connected to the PR interval is the PR segment which is the EKG wave portion that corresponds to the period between the atria depolarization conclusion to the onset of the ventricular depolarization. At this time the impulse in the heart travels from the AV node through the conducting tissue towards the ventricles. The segment is isoelectric in nature. During ventricular depolarization, the ventricles undergo depolarization and this is represented in the waveform by the QRS complex. It ordinarily ranges between 0.04 seconds to 0.12 seconds and is measured from the onset of the fi rst deflection to the conclusion of the last deflection. Another isoelectric segment occurs typically referred to as the ST segment. It represents ventricular muscle contraction time before any depolarization takes place. Isoelectric segments represents durations in which no electric activities occur. The period between the onset of the QRS segment and the end of the T wave is represented in the waveform by the QT interval. This represents the period of ventricular depolarization up to the ventricular depolarization. The T wave essentially represents ventricular repolarization. The EKG thus represents the entire electric activity of the heart through the waveform morphology (Stein, 2012). Types of dysrhythmia Dysrhythmia is a condition of the heart that causes variation in the regular beat of the heart. Ordinarily it manifests in slow heart beat, skipping a heart beat or sudden changes in heart beat. The common types of dysrhythmia include: Bradycardia which refers to a heart beat f ewer than sixty beats per minute in an adult. Tachycardia, a condition in which the heart beats more than one hundred times per minute in an adult. Sick sinus syndrome, the heart rate slows down, at times the rates varying between slow and fast. Atrial flutter, a condition in which the heart beats very fast at around three hundred and fifty beats per minute, but usually steady (Day, 2012). Features and treatment The conditions described in the previous paragraph best serve

Outline the differences between negative and positive freedom.which do Essay

Outline the differences between negative and positive freedom.which do you see as more persuasive - Essay Example Moreover, based on the differences the paper will also discuss which kind of freedom persuades me more. In order to differentiate the two kinds of freedom it is necessary to understand their definitions. Negative freedom revolves around the concept of freedom without any interference. On the contrary positive freedom is a much complex phenomenon that is difficult to understand compared to negative freedom. This belief states to do something according to rules and regulations with system interference (Stanford Encyclopedia of Phiolosphy, 2012). Political systems across the world have been using negative and positive freedom simultaneously. When the systems are free from regulations that prevent their ability to act, they use negative freedom, similarly, when the system has enough resources to act as they want to, then they enjoy positive freedom. This increases the complexity for the audience to easily differentiate the two liberties effectively (Institute for Humane Studies, 1996). Different societies have their own understanding on how they differentiate the two kinds of freedom. For this reason these freedoms are sometimes peculiar with each other. When there are no barriers negative freedom takes place. It also highlights the absence of limitations, obstructions, or intrusions from any authority; in short a failure of a political system. One the contrary, positive freedom takes places under the legislative rules and regulations. In this kind of freedom a person or state acts autonomously (MacCallum, 1967). This can be understood with the help of an example. A person can enjoy a freedom over the property as long as no one interferes in it; this will fall under negative freedom. At the same time a person also has freedom over some property if he owns it and has control given to him by the laws; this will fall under positive freedom (Gray, 1978). Many philosophers and thinkers also studied and presented the differences