Under certain conditions, including arrhythmias, several of the heart beats are ineffective and the aorta is not stretched enough to create an obvious pressure wave. The pulse is irregular and the heart rate can be elevated than the pulse rate. In this case, the heart rate must be determined by auscultation of the heart apex. The pulse deficit ought to be determined by instantaneous palpation at the radial artery and auscultation at the heart apex. A normal pulse rate for a healthy adult, while resting, can vary from 60 to 100 beats per minute.
Restate your predictions that were correct and give data from your experiment that support them. Restate your predictions that were not correct and correct them, giving supporting data from your experiment that supports your corrections. During exercise HR, SV, and CO will all increase due to the increased demand of oxygen needed throughout the body as well as the increased pumping action of the heart having to work faster to get blood to the tissues during exercise Application 1. We measured the stroke volume of the left ventricle. What was the average stroke volume of the right ventricle at rest and
Lung disorders, such as asthma and chronic bronchitis, are not commonly associated with an increased risk for heart failure. However, they can precipitate heart failure. [pic]"Have you ever had a heart attack?" Correct Myocardial infarction, coronary artery disease, and ischemic heart disease are among the most common underlying causes of heart failure. In fact, the most common cause of heart failure is myocardial infarction.
ACTIVITY 2 Studying the Effect of Blood Viscosity on Blood Flow Rate 1. Describe the components in the blood that affect viscosity. The plasma, red and white blood cells, and platelets cause resistance as they travel through vessels. 2. Explain the effect that the viscosity change had on flow rate.
Summary: My hypothesis was 75% correct. While all the participants showed significant changes the female smoker’s BP and pulse actually decreased instead of increasing. The increases that went as expected in the other three participants were related to their activity, then as time went on the body recognized a return state of activity and in turn re-established a normal BP. The increased body movement increased their BP and pulse because the body had to work harder to pump the blood and supply more oxygen to the body, especially the heart. As far as the unexpected results of the smoker I am not able to correlate any supporting explanation as to why her BP and pulse decreased.
Congestive Heart Failure (CHF) happens when the heart’s inablility to strongly pump blood through the heart causes the fluid called congestion to buildup in the lungs and other body tissues. Contrary to what most people think, CHF doesn’t mean that the heart suddenly stops working. It just means that the blood flow isnt as strong as it should be. The most common reason for heart attacks is from Coronary Artery Disease, where the coronary arteries in the heart are either narrowing, or there is a blockage from fluid or blood buildup
Blood vessels, if constricted, increase SVR and blood pressure while vasodilation decreases SVR and blood pressure. The longer the length of the blood vessel(s), the greater the SVR, therefore, the greater the resistance, the greater the cardiac output and blood pressure must be to overcome the
This elevation in blood pressure is typically due to damage to the arterial walls, which causes them to lose the elasticity they need to restrict and dilate normally. This leads to increased pressure as the heart has to work harder to push the blood through the narrowed arteries. The increased pressure also puts more strain on the arteries, which in turn causes more damage within the walls than can cause fatty substances in the blood to stick to those areas
Athletes tends to have a lower resting heart rate because of their intense training programs. Their training programs conditions their heart muscle to pump greater blood volume. The well-conditioned athlete would have a resting pulse of 48 and
I would begin by explaining that blood pressure is the force that your blood exerts on your arteries. If you have high blood pressure it means that your blood is exerting too much force on your arteries and is making your heart’s job even harder. Your heart is a powerful and efficient muscle, but if made to work to hard for too long, it can enlarge and wear out or even fail. This can also cause a heart attack, stroke, even an early death. When you take your blood pressure, you will see two numbers referred to as your systolic and diastolic blood pressure.