ipl-logo

How Different Conditions Affect Blood Pressure And Pulse Rate

904 Words4 Pages

Introduction:
The general purpose of this experiment was to see how different conditions affected blood pressure and pulse rate. Blood pressure is defined as the force exerted on a vessel wall, and is expressed in millimeters of mercury (mmHg) (Marieb). Systolic pressure is the pressure in an artery at the peak of ventricular systole, or contraction, where blood is being ejected out of the artery. Diastolic pressure is the pressure in an artery at the end of ventricular diastole, when blood fills the chamber. Systolic pressure averages 120mmHg, whereas diastolic pressure averages 80mmHg (Class Materials). Mean arterial pressure (MAP) is the average pressure exerted by blood on the walls of arteries, and it is also an important factor to consider …show more content…

It was hypothesized that blood pressure would decrease after reclining because your body is in a less stressful state at the time. The body does not have to fight against gravity to push blood to the brain because the blood is able to flow more easily (Callahan). The pulse rate is expected to stay the same because the body isn’t doing any extraneous movement. Because the body is essentially at rest, the Parasympathetic Nervous System is at work in order to save energy in the body. Immediately after standing, it is hypothesized that blood pressure would increase because of the sudden change in blood volume that is being distributed to the legs. Baroreceptors are blood pressure receptors in the carotid sinuses and in the aortic arch that are activated when arterial blood pressure rises (Marieb). In this case, the baroreceptors will be stimulated, the cardioinhibitory center (CIC) will be stimulated, and the vasomotor center will be inhibited. This will then cause a decrease in the sympathetic impulses to the heart, which would then decrease heart rate and decrease cardiac output (Class Materials). This mechanism is known as homoeostasis. Heart rate is also expected to increase after quickly standing because the body’s nervous system isn’t adjusting properly to a different body …show more content…

It was hypothesized that cognitive stressors would increase heart rate and blood pressure. When our bodies are faced with stress, such as spelling words backwards and forwards, they respond by releasing stress hormones into the blood that arrange the body for the “fight or flight responses”, and initiate the sympathetic nervous system (SNS). The SNS releases epinephrine and norepinephrine which causes vasoconstriction. Vasoconstriction of the blood vessels happens in order to distribute more blood throughout our entire body rather than just the extremities and it causes an increase in mean arterial pressure

Show More
Related
1130 Words | 5 Pages

Anna Garcia’s cardiologist had Anna complete cardiac testing. Anna underwent a treadmill stress test. Drastic increases in blood pressure occurred for the patients during the test. Also, a few premature ventricular contractions, which are heartbeats that start in one of the heart’s two lower chambers, were noted during the test. Ventricular tachycardia, a condition in which the lower chambers of the heart beat quickly, also occurred during the treadmill stress test, for Anna

Read More
1094 Words | 5 Pages

In these locations, gases are absorbed and released where needed. As oxygenated blood flows through arteries in an anglerfish, it maintains a constant speed, as the law of continuity states that if the fluid (blood) stays at constant density and the pipe (veins/arteries) remains the same cross-sectional area, then the speed of the blood will be constant. When the pipe cross-sectional area changes, the average velocity of the fluid changes so that blood flows faster in thinner parts of a pipe and flows slower in wider parts. This would lead us to think that when blood travels from arteries to a capillary bed the blood pressure would increase, as the cross-sectional area of each capillary is much less than the cross-sectional area of each artery.

Read More
149 Words | 1 Pages

According to graph 1 before the subjects ate the salt, the average diastolic level for all the twelve subject was 66 mmHg. However, after letting the twelve subjects ate the salt and calculated

Read More
776 Words | 4 Pages

On the other hand, the volume pulse wave is a recording of the changes of blood volume in an artery during one cycle of the heart. The dicrotic notch from the volume pulse wave, in which pressure increases, occurs at the same time as the QRS complex from the EKG where depolarization of the ventricles occurs. “A” from the volume pulse wave, when the contraction of the ventricle initiates pressure to the blood, occurs at the same time as the EKG’s T wave, repolarization of the muscle fibers of the ventricles. Lastly, “B” from the volume pulse wave occurs at around the same time as “P” on the EKG recording. This means that the peak pressure applied to blood happens at the same time as the depolarization across the heart muscle fibers of the left and right

Read More
768 Words | 4 Pages

Gerlach-Spriggs, Kaufman, and Warner (1998, 37) add that stress also causes measurably increased muscle tension and changes in brain wave function and mental concentration. This is used in times of danger and high stress to give the body an extra boost to escape harm. When a person enters a hospital, the sympathetic response occurs and is active during and after a patient’s stay. This response slows the healing process and decreases the effectiveness of medical treatment in the hospital setting. The parasympathetic division performs the opposite function; it calms the body down.

Read More
1462 Words | 6 Pages

Thus, the sympathetic nervous system increases heart rate, and the forced contractions widen the airways making it easier to breathe. Your body now releases stored energy, which allows for increased strength in muscles, and can also cause your palms to sweat, pupils to dilate, and hair to stand up. The parasympathetic division is most active during resting conditions, hence, why it can also be called, “rest and digest”. This division controls body processes during ordinary situations. It generally slows down your heart rate and decreases your blood

Read More
2192 Words | 9 Pages

TABLE 6:- Changes in Blood pressure Group I Group II Not significant 33 (66%) 15 (30%) Mild (11 – 20 mm Hg) 17 (34%) 20 (40%) Moderate (21 – 30 mm Hg) NIL 10

Read More
156 Words | 1 Pages

Sudden changes in posture cause homeostatic imbalance, and stimulate the cardiovascular system and the sympathetic division of the autonomic nervous system to respond in order to correct the imbalance. Standing quickly causes blood to pool in the lower body which makes blood pressure drop. This stimulates the baro-receptors in the large arteries such as the aorta and the carotid bifurcation to send signals to the Medulla Oblongata in the brain (Lanier, Mote & Clay, 2011) & (Ziegler, 1980). In response to these signals the Medulla Oblongata sends messages through the sympathetic nervous system to the body to create responses such as vasoconstriction (constriction of the blood vessels) (Marieb, 2015).

Read More
1075 Words | 5 Pages

This type of shock occurs when the heart is unable to pump blood effectively. This is evident to patients who have had myocardial infarction, such as John’s case. In this illness, the heart has decreased contractility resulting to decreased cardiac output. Such decrease will stimulate the sympathetic nervous system to activate the compensatory mechanism by increasing the heart rate as evident in John’s vital sign to increase the peripheral pressure and ventricular

Read More
240 Words | 1 Pages

The body has an automatic response to stress from a perceived threat, whether the threat is mentally or physically. This reaction is called the fight or flight response. The moment our bodies sense the danger, it kicks in. The adrenal glands release adrenaline, causing breathing and heartrate to speed up and blood pressure to rise. Digestion stops and the extra blood flow is redirected towards the muscles to give them the extra energy the body needs as it prepares to either fight or flee.

Read More
1207 Words | 5 Pages

The oxford dictionary describes anxiety "A feeling of worry, nervousness, or unease about something with an uncertain outcome"(1). Anxiety causes unwanted and distressing physical symptoms due to our innate reaction to perceived danger, fight or flight. (weird sentence structure) Distressing physical symptoms may be increased, such as the heart rate, due to the body reacting either by fighting or running away (flight) from danger. This increases the blood flow to the peripherals increasing oxygen and glucose to the muscles.

Read More
759 Words | 4 Pages

The parasympathetic nervous system decreases heart rate and blood pressure, and decreases respiratory system and rate of breathing. Regular massage therapy can aid to regulate stress by maintaining a balance between the sympathetic and parasympathetic systems. A body that is able to come down from a sympathetic state and into a

Read More
1583 Words | 7 Pages

In this regard, cardiovascular response to exercise occurs with changes in heart rate, cardiac output, stroke volume, peripheral vascular resistance and blood pressure/arterial pressure,

Read More
1479 Words | 6 Pages

Introduction This essay will reflect on my personal experience, skills, and knowledge gained from my studies and practice of undertaking blood pressure (Bp) whilst completing my professional placement. Bp may be defined as a force of blood against vessel walls in the body, consisting of systolic and diastolic pressure measured in millimeters of mercury. (Waugh and Grant, 2016) Systolic pressure occurs when the hearts left ventricle contracts and forces blood into the aorta causing a heightened atrial pressure, while diastolic pressure refers to complete cardiac diastole, this is when the aortic valve closes and pressure is at its lowest between beats, blood moves into smaller corresponding vessels and the heart rests.

Read More
791 Words | 4 Pages

Blood pressure is the thrust of this blood in the body pushing up against the inside walls of the arteries

Read More

More about How Different Conditions Affect Blood Pressure And Pulse Rate

Related Topics

Open Document