What is the main cause of Tides?
Gravity is one major force that creates tides. In 1687, Sir Isaac Newton explained that ocean tides result from the gravitational attraction of the sun and moon on the oceans of the earth (Sumich, J.L., 1996).
What are the four different types of Tides?
There are three basic types of daily tides and a fourth type that encompasses atmospheric variations.Diurnal Tide. A diurnal tide has one episode of high water and one episode of low water each day. ... Semi-diurnal Tide. ... Mixed Tide. ... Meteorological Tide.
What prolongs the PR interval?
A prolonged PR interval indicates delayed conduction of the sinoatrial, or SA, nodal impulse to the ventricles and is called first-degree AV block. A short PR interval can be seen when the AV node delay is bypassed, such as in Wolff-Parkinson-White syndrome or Lown-Ganong-Levine syndrome.
How long can you live with congestive heart failure?
Although there have been recent improvements in congestive heart failure treatment, researchers say the prognosis for people with the disease is still bleak, with about 50% having an average life expectancy of less than five years. For those with advanced forms of heart failure, nearly 90% die within one year.
What are the symptoms of end stage congestive heart failure?
Symptoms of Heart FailureConfusion, impaired thinking. This is caused by changing levels of certain substances in the blood, such as sodium.Shortness of breath (dyspnea). ... Persistent coughing or wheezing. ... Increased heart rate/palpitations. ... Swelling (edema). ... Lack of appetite, nausea. ... Tiredness, fatigue.
Is inverted T wave normal?
The T wave is the most labile wave in the ECG. T wave changes including low-amplitude T waves and abnormally inverted T waves may be the result of many cardiac and non-cardiac conditions. The normal T wave is usually in the same direction as the QRS except in the right precordial leads (see V2 below).
What is the treatment of ischemic stroke?
Ischemic Stroke Treatment. The only FDA approved treatment for ischemic strokes is tissue plasminogen activator (tPA, also known as IV rtPA, given through an IV in the arm). tPA works by dissolving the clot and improving blood flow to the part of the brain being deprived of blood flow.
What is the most common cause of ischemic stroke?
Ischemic strokes occur when the arteries to your brain become narrowed or blocked, causing severely reduced blood flow (ischemia). The most common ischemic strokes include: Thrombotic stroke. A thrombotic stroke occurs when a blood clot (thrombus) forms in one of the arteries that supply blood to your brain.
What is the difference between hypoxia and asphyxia?
The main difference between Asphyxia and Hypoxia is that asphyxia is caused by an injury or obstruction of airway passages whereas hypoxia is caused by inadequate delivery, uptake or utilization of oxygen by the body's tissues. Asphyxia is the arriving condition of a body when it's deprived of oxygen.
What are the signs of hypoxia?
Although they can vary from person to person, the most common hypoxia symptoms are:Changes in the color of your skin, ranging from blue to cherry red.Confusion.Cough.Fast heart rate.Rapid breathing.Shortness of breath.Sweating.Wheezing.
How do you know if you have lack of oxygen?
If you or a loved one experience any of the symptoms listed below, contact a health care provider as soon as possible:Confusion.A sense of euphoria.Restlessness.Headache.Shortness of breath.Rapid breathing.Dizziness, lightheadedness and/or fainting spells.Lack of coordination.More items...
Can hypoxia lead to death?
Brain cells are very sensitive to a lack of oxygen. Some brain cells start dying less than 5 minutes after their oxygen supply disappears. As a result, brain hypoxia can rapidly cause severe brain damage or death.
What are the early signs of cerebral palsy?
BabiesLow muscle tone (baby feels 'floppy' when picked up)Unable to hold up his/her own head while lying on their stomach or in a supported sitting position.Muscle spasms or feeling stiff.Poor muscle control, reflexes and posture.Delayed development (can't sit up or independently roll over by 6 months)More items...
Can a child outgrow cerebral palsy?
In some children with cerebral palsy, especially those who are mildly affected, brain imaging tests show no abnormalities, suggesting that microscopically small areas of brain damage can cause symptoms. About half of babies who are diagnosed with mild cerebral palsy appear to outgrow their symptoms.
What are the early and late signs of hypoxia?
In severe hypoxia, or hypoxia of very rapid onset, ataxia, confusion / disorientation / hallucinations / behavioral change, severe headaches / reduced level of consciousness, papilloedema, breathlessness, pallor, tachycardia, and pulmonary hypertension eventually leading to the late signs cyanosis, slow heart rate / ...
What are the symptoms of oxygen deprivation?
Early signs of oxygen deprivation include:Changes in heart rate.Decreased circulation in the hands or feet.Parts of the body turning blue.Fainting, seeing spots, or being unable to think clearly.Decreased judgment or awareness.Seizures.Inability to follow directions or complete complex tasks.
What are the signs and symptoms of acute respiratory failure?
When symptoms do develop, they may include:difficulty breathing or shortness of breath, especially when active.coughing up mucous.wheezing.bluish tint to the skin, lips, or fingernails.rapid breathing.fatigue.anxiety.confusion.
What are the symptoms of lack of oxygen to the brain?
Other possible causes of oxygen depletion include:hypotension, which is extremely low blood pressure.anesthesia complications during surgery.choking.carbon monoxide poisoning.drowning.breathing in carbon monoxide or smoke.traveling to high altitudes (above 8,000 feet)brain injury.More items...
What does St T wave changes mean?
General Introduction to ST, T, and U wave abnormalities. ... Thus the term, nonspecific ST-T wave abnormalities, is frequently used when the clinical data are not available to correlate with the ECG findings. This does not mean that the ECG changes are unimportant!
What is an ECG and what can it tell you?
An ECG (electrocardiogram) records the electrical activity of your heart at rest. It provides information about your heart rate and rhythm, and shows if there is enlargement of the heart due to high blood pressure (hypertension) or evidence of a previous heart attack (myocardial infarction).
What does ventricular tachycardia look like?
Ventricular Tachycardia (VT) ECG Review. Ventricular tachycardia refers to a wide QRS complex heart rhythm �� that is, a QRS duration beyond 120 milliseconds �� originating in the ventricles at a rate of greater than 100 beats per minute. ... You can find links to many more examples of VT at the bottom of this review.
What is a ST segment depression?
It represents the interval between ventricular depolarization and repolarization. The most important cause of ST segment abnormality (elevation or depression) is myocardial ischaemia or infarction.
What is heart stunning?
Myocardial stunning is the reversible reduction of function of heart contraction after reperfusion not accounted for by tissue damage or reduced blood flow.
What happens when the brain doesn t get enough blood?
Ischemic Stroke. Ischemic stroke happens when part of the brain is injured because it isn't getting enough blood. The brain needs a constant supply of blood, which carries oxygen and other nutrients. ... If a small part of the brain doesn't get enough blood, that small part of the brain will die.
What is sustained ischemia?
Myocardial ischemia is an intermediate condition in coronary artery disease during which the heart tissue is slowly or suddenly starved of oxygen and other nutrients. Eventually, the affected heart tissue will die. When blood flow is completely blocked to the heart, ischemia can lead to a heart attack.
What heart problems qualify for disability?
While not exhaustive, here are some of the more common heart problems which often qualify sufferers for Social Security Disability:Chronic Venous Insufficiency. ... Recurrent Arrhythmias. ... Chronic Heart Failure. ... Ischemic Heart Disease. ... Hypertensive Heart Disease.
What are the characteristics of a right brained person?
The right hemisphere is associated with cognitive skills, such as creativity, emotion and intuitiveness. It also controls the left side of the body, so right-brained people are often left-handed. Right-brain dominant people are characterized as artistic, innovative and often random.
What would happen if the frontal lobe was damaged?
Memory impairment is another common effect associated with frontal lobe injuries, but this effect is less documented and may or may not be the result of flawed testing. Damage to the frontal lobe can cause increased irritability, which may include a change in mood and an inability to regulate behavior.
Do TIA show up on CT scan?
Tests will be done to rule out a stroke or other disorders that may cause the symptoms: You will likely have a head CT scan or brain MRI. A stroke may show changes on these tests, but TIAs will not. You may have an angiogram, CT angiogram, or MR angiogram to see which blood vessel is blocked or bleeding.
Can a clogged artery cause high blood pressure?
The excess strain and resulting damage from high blood pressure (HBP or hypertension) causes the coronary arteries serving the heart to slowly become narrowed from a buildup of fat, cholesterol and other substances that together are called plaque. This slow process is known as atherosclerosis.
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