![]() |
Anemia; Cardiac tamponade; Changes in glucose metabolism; Changes in electrolyte levels ( hyperkalemia; Congestive heart failure; End-stage kidney disease; Gastrointestinal bleeding, ulcers; Hemorrhage; High blood pressure; Hyponatremia; Infertili...
|
![]() |
Anemia is a condition where there is a lower than normal number of red blood cells in the blood, usually measured by a decrease in the amount of hemoglobin. Hemoglobin is the oxygen-carrying part of red blood cells. It gives these blood cells their red color. There are many types and potential causes of anemia. For information about a specific type of anemia, see one of the following articles: Anemia due to B12 deficiency; Anemia due to folate deficiency; Anemia due to iron deficiency; Hemolytic anemia; Hemolytic anemia due to G-6-PD deficiency; Idiopathic aplastic anemia; Idiopathic autoimmune hemolytic anemia; Immune hemolytic anemia; Megaloblastic anemia; Pernicious anemia; Secondary aplastic anemia; Sickle cell anemia.
|
|
|
Anemia is a condition characterized by abnormally low levels of healthy red blood cells or hemoglobin. The tissues of the human body need a regular supply of oxygen to stay healthy.
|
|
Anemia is a blood disorder characterized by abnormally low levels of healthy red blood cells (RBCs) or reduced hemoglobin (Hgb), the iron-bearing protein in red blood cells that delivers oxygen to tissues throughout the body. Reduced blood cell volume (hematocrit) is also considered anemia.
|
|
Anemia is characterized by an abnormally low number of red blood cells in the circulating blood. It frequently affects patients with cancer.
|
|
|
Anemia is a condition characterized by abnormally low levels of healthy red blood cells or hemoglobin (the component of red blood cells that delivers oxygen to tissues throughout the body). The tissues of the human body need a regular supply of oxygen to stay healthy.
|
|
|
Deficiency of red cells, or hemoglobin, in the blood. Anemia is a medical condition in which the quantity of red blood cells falls below an acceptable level.
|
|
Anemia is a condition characterized by abnormally low levels of healthy red blood cells or hemoglobin (the component of red blood cells that delivers oxygen to tissues throughout the body). The tissues of the human body need a regular supply of oxygen to stay healthy.
|
|
|
Anemia affects more than 30 percent of the world ' s population, and it is one of the most important worldwide health problems. It has a significant prevalence in both developing and industrialized nations.
|
![]() |
Bleeding refers to the loss of blood. Bleeding can happen inside the body (internally) or outside the body (externally. It may occur: Inside the body when blood leaks from blood vessels or organs; Outside the body when blood flows through a natural opening (such as the vagina, mouth, or rectum; Outside the body when blood moves through a break in the skin.
|
![]() |
Cardiac tamponade is the compression of the heart that occurs when blood or fluid builds up in the space between the myocardium (the muscle of the heart) and the pericardium (the outer covering sac of the heart.
|
|
Cardiac tamponade occurs when the heart is squeezed by fluid that collects inside the sac that surrounds it. The heart is surrounded by a sac called the pericardium.
|
![]() |
Heart failure, also called congestive heart failure, is a life-threatening condition in which the heart can no longer pump enough blood to the rest of the body.
|
![]() |
End-stage kidney disease is a complete or near complete failure of the kidneys to function to excrete wastes, concentrate urine, and regulate electrolytes. Also called End-stage renal disease (ESRD.
|
![]() |
If more pressure is put on a bone than it can stand, it will split or break. A break of any size is called a fracture. If the broken bone punctures the skin, it is called an open fracture (compound fracture. A stress fracture is a hairline crack in the bone that develops because of repeated or prolonged forces against the bone.
|
|
|
A fracture is a complete or incomplete break in a bone resulting from the application of excessive force. An injury may be classified as a fracture-dislocation when a fracture involves the bony structures of any joint with associated dislocation of the same joint.
|
|
|
A fracture is a crack or break in a bone. It results from the application of excessive force through injuries, such as a fall or a hard blow.
|
|
|
A fracture is a complete or incomplete break in a bone resulting from the application of excessive force. A fracture usually results from traumatic injury to a bone, causing the continuity of bone tissues or bony cartilage to be disrupted or broken.
|
|
|
A fracture is a complete or incomplete break in a bone resulting from the application of excessive force. A fracture usually results from traumatic injury to bones causing the continuity of bone tissues or bony cartilage to be disrupted or broken.
|
![]() |
Gastrointestinal bleeding refers to any bleeding that starts in the gastrointestinal tract, which extends from the mouth to the large bowel. The amount of bleeding can range from nearly undetectable to acute, massive, and life threatening. Bleeding may come from any site along the gastrointestinal tract, but is often divided into: Upper GI bleeding: The upper gastrointestinal (GI) tract is located between the mouth and outflow tract of the stomach; Lower GI bleeding: The lower GI tract is located from the outflow tract of the stomach to the anus (small and large bowel included.
|
|
|
GI bleeding studies uses radioactive materials in the investigation of bleeding from the gastrointestinal (GI) tract. These studies go under various names such as " GI bleeding scans " or " Tagged red blood cell scans.
|
![]() |
Hypertension is the term doctors use for high blood pressure. Blood pressure readings are measured in millimeters of mercury (mmHg) and usually given as 2 numbers. For example, 140 over 90 (written as 140/90. The top number is your systolic pressure, the pressure created when your heart beats. It is considered high if it is consistently over 140; The bottom number is your diastolic pressure, the pressure inside blood vessels when the heart is at rest. It is considered high if it is consistently over 90. Either or both of these numbers may be too high. Pre-hypertension is when your systolic blood pressure is between 120 and 139 or your diastolic blood pressure is between 80 and 89 on multiple readings. If you have pre-hypertension, you are more likely to develop high blood pressure at some point. See also: Blood pressure
|
|
In populations, blood pressures fit a normal distribution, but the attendant risks of heart disease and stroke increase curvilinearly with increasing levels of blood pressure, without any obvious breakpoint ( Fig. 63-1 ). Thus, the separation of normal from high blood pressure is arbitrary, and the definition of hypertension has been a moving target.
|
|
|
Blood pressure is the force with which blood pushes against the artery walls as it travels through the body. Like air in a balloon, blood fills arteries to a certain capacity- and just as too much air pressure can cause damage to a balloon, too much blood pressure can harm healthy arteries.
|
|
The following Clinical Topic Tour provides an overview of hypertension (HTN) and was adapted from materials published by the NHLBI.
|
|
|
Also known as high blood pressure, a condition in which too much force is exerted by the blood as it travels through the body ' s arteries. There are two types of hypertension: primary and secondary.
|
|
Hypertension is an independent risk factor for coronary artery disease (CAD) and stroke, leading causes of morbidity and mortality in North America. Concern has been raised that there is inadequate outpatient detection, evaluation, and treatment of hypertension, and that this is resulting in increased hospital admissions with complications of untreated hypertension: heart failure, and end-stage renal disease .
|
|
|
Hypertension is the medical term for high blood pressure. Blood pressure is the force of blood pushing against the walls of arteries as it flows through them.
|
|
The National High Blood Pressure Education Program (NHBPEP) was established in 1972 by the National Institute of Health to translate research results on the health hazards of high blood pressure into clinical and public health practice. Before 1900, high blood pressure, or hypertension, was not generally recognized as a health problem.
|
|
Hypertension is high blood pressure. Blood pressure is the force of blood pushing against the walls of arteries.
|
|
|
Hypertension is high blood pressure. Blood pressure is the force of blood pushing against the walls of arteries as it flows through them.
|
|
|
Hypertension is high blood pressure . Blood pressure is the force of blood pushing against the walls of arteries as it flows through them.
|
![]() |
Hyperkalemia is a condition caused by higher than normal levels of potassium in the bloodstream.
|
|
The normal concentration of potassium in the serum is in the range of 3.5 to 5.
|
![]() |
Infertility is the inability to become pregnant after 12 months of unprotected sex (intercourse.
|
|
Infertility is the failure to conceive a pregnancy after attempting for at least one full year. In primary infertility, pregnancy has never occurred.
|
|
|
Infertility is the failure of a couple to conceive a pregnancy after trying to do so for at least one full year. In primary infertility, pregnancy has never occurred.
|
|
Infertility is the failure of a couple to conceive a pregnancy after trying to do so for at least one full year. In primary infertility, pregnancy has never occurred.
|
![]() |
Itching is a tingling or uneasy irritation of the skin that makes you want to scratch the affected area.
|
|
Itching is an intense, distracting irritation or tickling sensation that may be felt all over the skin ' s surface or confined to just one area. The medical term for itching is pruritus.
|
|
Itching is an intense, distracting irritation or tickling sensation that may be felt all over the skin ' s surface or confined to just one area. The medical term for itching is pruritus.
|
|
Itching, also called pruritus, is an unpleasant sensation of the skin that causes a person to scratch or rub the area to find relief. Itching can be confined to one spot (localized) or over the whole body (generalized).
|
|
Itching is an intense, distracting irritation or tickling sensation that may be felt all over the skin ' s surface, or confined to just one area. The medical term for itching is " pruritus.
|
|
Joints serve as links between structures; in this case, bones in the human body. There are numerous joints in the body that act to stabilize and control bony segments.
|
![]() |
Hypoglycemia is a condition that occurs when your blood sugar (glucose) is too low.
|
|
Hypoglycemia is a condition characterized by low blood sugar, or abnormally low levels of glucose in the blood. Hypoglycemia (also known as a hypo, insulin shock, and a low) is brought on by abnormally low levels of glucose in the blood (i.
|
|
The condition called hypoglycemia is literally translated as low blood sugar. Hypoglycemia occurs when blood sugar (or blood glucose) concentrations fall below a level necessary to properly support the body ' s need for energy and stability throughout its cells.
|
|
Hypoglycemia, or abnormally low blood sugar, is caused by the impaired response (or failure) of the liver to release glucose as blood sugar levels decrease. The imbalance in the rate of glucose released from the liver and its use by other body tissues can result in the following hypoglycemic symptoms: hunger, nervousness, dizziness, confusion, sleepiness, difficulty speaking, feeling anxious or weak, irritability, sweating, loss of consciousness, and increased blood pressure .
|
|
Abnormally low levels of glucose in the blood. Hypoglycemia, or insulin shock, is brought on by abnormally low levels of glucose in the blood.
|
|
Hyponatremia is a metabolic condition in which there is not enough sodium in the body fluids outside the cells.
|
|
The normal concentration of sodium in the blood plasma is 136-145 mM. Hyponatremia occurs when sodium falls below 130 mM.
|
![]() |
A miscarriage is the spontaneous loss of a fetus before the 20th week of pregnancy. (Pregnancy losses after the 20th week are called preterm deliveries) A miscarriage may also be called a "spontaneous abortion." This refers to naturally occurring events, not elective or therapeutic abortion procedures, which a woman may choose to have done. Other terms for the early loss of pregnancy include: Missed abortion (a loss of pregnancy where the products of conception do not exit the body; Incomplete abortion (not all of the products of conception exit the body; Complete abortion (all of the products of conception exit the body; Threatened abortion (symptoms indicate a miscarriage is possible; Inevitable abortion (the symptoms cannot be stopped, and a miscarriage will happen; Infected abortion.
|
|
Miscarriage means loss of an embryo or fetus before the 20th week of pregnancy . Most miscarriages occur during the first 14 weeks of pregnancy.
|
|
A miscarriage is the loss of an embryo or fetus before the twentieth week of pregnancy . A pregnancy loss after the twentieth week is called a stillbirth.
|
![]() |
A peptic ulcer is erosion in the lining of the stomach or duodenum (the first part of the small intestine. The word ?peptic? refers to pepsin, a stomach enzyme that breaks down proteins. If a peptic ulcer is located in the stomach it is called a gastric ulcer. Small ulcers may not cause any symptoms. Large ulcers can cause serious bleeding. Most ulcers occur in the first layer of the inner lining. A hole that goes all the way through is called a perforation of the intestinal lining. A perforation is a medical emergency.
|
|
|
In general, an ulcer is any eroded area of skin or a mucous membrane, marked by tissue disintegration. In common usage, however, ulcer is usually used to refer to disorders in the upper digestive tract.
|
![]() |
Pericarditis is a disorder caused by inflammation of the pericardium, which is the sac-like covering around the heart.
|
|
|
Pericarditis is an inflammation of the two layers of the thin, sac-like membrane that surrounds the heart. This membrane is called the pericardium, so the term pericarditis means inflammation of the pericardium.
|
![]() |
Peripheral neuropathy is a problem with the nerves that carry information to and from the brain and spinal cord. This produces pain, loss of sensation, and inability to control muscles. "Peripheral" means nerves beyond the brain and spinal cord; "Neuro" means nerves; "Pathy" means abnormal.
|
|
Peripheral neuropathy is a condition involving the nerves of the peripheral portion of the nervous system. Neurobiologists describe the peripheral nervous system as any part of that system found in the arms or legs.
|
|
The term peripheral neuropathy encompasses a wide range of disorders in which the nerves outside of the brain and spinal cord- peripheral nerves- have been damaged. Peripheral neuropathy may also be referred to as peripheral neuritis, or if many nerves are involved, the terms polyneuropathy or polyneuritis may be used.
|
|
Peripheral neuropathy, sometimes called peripheral neuritis, is damage to the nerves that connect peripheral (outlying) portions of the body (especially the hands, arms, legs, and feet) to the central nervous system. It may involve only one peripheral nerve (mononeuropathy) or several nerves (polyneuropathy).
|
|
Platelets are elements within the bloodstream that recognize and cling to damaged areas inside blood vessels. When they do this, the platelets trigger a series of chemical changes that result in the formation of a blood clot.
|