common best practices, references are required. We reserve the right to request additional references. References and resources used: Date reviewed: Sinus Tachycardia Sinus tachycardia is a kind of fast heartbeat. In sinus tachycardia, the heart beats more than 100 times a minute. Sinus tachycardia starts in a part of the heart called the sinus node. Sinus tachycardia may be harmless, or it may be a sign of a serious condition. CAUSES This condition may be caused by: • Exercise or exertion. •
Stroke has been implicated as the third leading cause of death1. It’s occurrence increases with age, with two-thirds of stroke victims being over 65 years old2. The elderly population is increasing, with 20% of the U.S. population expected to be over 65 years old by the year 20303. As future dentists, these are the people we will one day be treating in our practices. Therefore, it is important for us to be able to properly prevent, recognize, and manage the diseases of the elderly population. Even
The Iceman’s Murder About 25 years ago, a mysterious body was found in the Ötztal Alps between Italy and Austria. Originally thought to be a hiker lost in the mountains, one of many that share that similar fate. However, upon closer inspection, it was discovered that they had instead found a corpse from 5300 years in the past. This was exciting as they had just found the world’s oldest mummy. While most scientists thought he died in the cold up the mountain, some had doubts, and while studying the
intake and asphyxia. Blocking the carotid arteries depriving the brain of oxygen is another way. Both of these methods can cause a feeling as if your head is going to explode. This is caused by something called a brain attack, which while similar to a heart attack, is different in that the blood builds up against the block causing an increase in pressure in the blood vessels. It can take only 15 seconds for a human to not be able to return naturally from carotid obstruction. Another way in which
Atrioventricular node reentrant tachycardia Other than atrial fibrillation and atrial flutter, this is the most common supraventricular tachycardia seen in practice.11 A large minority of adults (up to 40% in some cohorts) are born with 2 pathways that can conduct electricity in the AV node, rather than 1. Under the right conditions, AV node reentrant tachycardia (AVNRT) can be initiated by a premature atrial or ventricular beat. If the 2 pathways are able to sustain a stable circuit, the atrium
The human body regulates blood pressure using the cardiovascular system and central nervous system in order to maintain homeostasis through the following steps. The three components involved in the cardiovascular system include; cardiac output (CO), peripheral resistance and blood volume. Cardiac output refers to the amount of blood pumped by the heart per minute. Peripheral resistance is the resistance of the arteries to blood flow. As the arteries constrict, the resistance increases verses arteries
In v-fib, the ventricles are not beating normally rather they quiver rapidly and abnormally. An electric shock from an AED can restore the normal sinus rhythm of the heart if done within minutes of the onset of the
Supraventricular tachycardia (SVT) is a heart condition where the heart beats irregularly due to electrical abnormalities. It is fairly common, especially in children and women, yet unfamiliar to most people who are not diagnosed with it. There are three types of SVT: atrioventricular nodal re-entry tachycardia, atrial tachycardia, and Wolff-Parkinson-White syndrome. All three types have the same symptoms during episodes, which can last from seconds to hours and include palpitations, fatigue,
itchy eyes, and rhinorrhea that have progressed over the last eleven days. His symptoms tend to be worse in the mornings when he wakes up and he has had a sore throat upon awakening that improves as the day progresses. He has also been getting mild sinus pressure 2/10 pain located around the eyes, that are relieved with OTC Tylenol. He has recently moved to Tampa from New York and has not had symptoms similar to this before. He does mention, however, that in the past smoke has caused him to get itchy
1. The three differences between arteries and veins are which veins they have few layers of smooth muscles and connective tissue unlike arteries which have many layers of smooth muscle tissues. The difference in the two is also veins have very little elastic as well as a wide lumen and arteries have several layers elastic and a regular lumen. Last but not least veins carry oxygenated poor blood to the heart and arteries carry oxygenated blood away from the heart. 2. Blood pressure, flow and resistance
Baroreceptors are sensors in the vascular system that respond to changes in pressure within blood vessels. Baroreceptors are found in the carotid sinus, aorta; the largest artery and the heart’s muscular pumping chamber, and wall of the left ventricle. They monitor the level of arterial pressure and act against in the order to lessen the force in the dilation of blood vessels, which decreases
For some time researchers have focused mainly on the sympathetic nervous system and have neglected the Autonomic nervous system. Being that the Autonomic nervous system is that in which is comprised of the sympathetic, parasympathetic, and enterie nervous system one would assume more information would be allotted to this important function of the body. Though the Autonomic nervous system does not provide neural control of the skeletal muscle, it in its own right, it still is very important to the
History and Physical Write Up #1 Student: Brandon Burt Date of History: 1/13/2016 Patient: L.S. CC: “I ran out of breath. I couldn’t breathe.” History of Present Illness: Mr. S is a 75yo white male who was in his usual state of health, which enables him to lead a relatively active life, until early Monday morning (1/11/16). At about 4am he began painting a room, a project he says he just had to finish. He was using a paint-roller and would roll paint for about 15 minutes at a time, before having
deoxygenated blood. However, the ventricle is divided into narrow chambers to overcome this problem and hence, minimizes the mixture of oxygenated and deoxygenated blood. When the ventricles contract, oxygenated blood from the left atrium travels to the carotid arteries and is transported to the brain while deoxygenated blood from the right atrium is transported to the pulmocutaneous arteries where it travels to the lungs and skin to pick up oxygen. Only blood passing through the aortic arches travels to
Client was found with past history gallbladder problems years ago. Review of symptoms: General: denies weight loss, insomnia, fever or chills. HEENT: no headache, no tinnitus, no hearing loss, mouth sores, no voice changes, no problems swallowing, sinus congestion, no visual disturbances. Cardio: no known murmur, palpitations or chest pressure/ pain. Respiratory: negative for S.O.B, cough or hemoptysis. GI: Positive for abdominal pain RUQ, nauseas and vomiting x2 today in a.m. hours, also black
Syncope is defined as a temporary loss of consciousness as a result of rapidly decreased blood flow and oxygen to the brain (Morag). Syncope is more commonly known as fainting, but includes much more than just that. Someone with syncope loses consciousness easier and more frequently than normal people. Syncope can affect all genders, ages, and races. There are many different types of this illness, such as vasovagal, situational, orthostatic hypotension, acute myocardial infarction (heart attack)
The Brain and Cranial Nerves One of the most complex and fascinating things in the human body is the brain. The body is “capable of almost everything, but it would not be possible, without the brain receiving information, and analyzing the information.” The brain is aware of its surroundings, via input from the spinal cord and cranial nerves. Cranial nerves with sensory functions allow us to smell and see. Nerves with both motor and sensory functions are responsible for everything from tasting
Her facial expressions are consistent with her chronological age. There are no abnormal hair distributions. No lymph nodes are palpable. She has no tenderness with sinus palpation. Her eyes are symmetrical with full mobility. Conjunctiva are white. She has no periorbital edema. With her glasses, she has 20/20 vision bilaterally. Without her glasses, she has 20/40 vision in the right eye and 20/60 vision in the left
Evolving Case Study: Chronic Obstructive Pulmonary Disease The patient in discussion has a past diagnosis of chronic obstructive pulmonary disease (COPD), with a history of environmental and personal risk factors that contributed to his diagnosis. COPD is a chronic inflammatory lung disease that affects gas exchange and oxygenation of all tissues. A common complication is cardiac failure (Ignatavicius & Workman, 2016, p. 558). A thorough assessment combined with laboratory and diagnostic tests will
using the foramen of Panizza, which allows and regulates blood flow from either the left or right ventricle into the left or right aorta. Blood flows from the left ventricle to the right aorta, dorsal aorta, right subclavian artery and the common carotid artery. The right ventricle moves blood into the pulmonary trunk which then separates blood into the left and right pulmonary arteries (Axellson, Franklin). During diving, crocodiles develop a slight bradycardia and develop a right to left shunt once