Clinical Chemistry And Serology (Updated To Include Hemostasis And Cytology)

DIC, also known as disseminated intravascular coagulation, is a condition characterized by the widespread formation of clots within the capillaries. In DIC, the normal balance between clot formation and clot breakdown is disrupted, leading to the formation of excessive clots throughout the body's blood vessels. This can result in organ damage and dysfunction due to impaired blood flow. DIC is often triggered by underlying medical conditions such as sepsis, trauma, or certain types of cancer. Prompt diagnosis and treatment are crucial to manage DIC and address the underlying cause.

Glucocorticoids and anticonvulsants are the two drugs that can cause a marked increase in ALKP (alkaline phosphatase) levels for up to 2 weeks after administration.

The exocrine part of the pancreas secretes an enzyme-rich juice that contains enzymes necessary for digestion into the small intestine. The exocrine glands in the pancreas produce and release digestive enzymes such as amylase, lipase, and proteases. These enzymes are responsible for breaking down carbohydrates, fats, and proteins in the food we eat, allowing for proper digestion and absorption of nutrients in the small intestine.

GGT (gamma glutamyl transferase) is a good indicator for small animal fatty liver disease. GGT is an enzyme that is primarily found in the liver, and its levels in the blood can increase when there is damage or disease affecting the liver. In the case of small animal fatty liver disease, the liver becomes infiltrated with fat, leading to inflammation and potential liver damage. Therefore, measuring GGT levels can help in diagnosing and monitoring the progression of small animal fatty liver disease.

If three or more nuclear criteria of malignancy are present, the specimen is identified as malignant. This means that if at least three specific characteristics associated with cancer cells are observed in the specimen, it is considered to be malignant. The number "three" and the numeral "3" both represent the same concept in this context.

Most bleeding disorders found in veterinary species are secondary to some other disease process.

The enzyme AST (aspartate transferase) is commonly increased in cases of hepatic disease, muscle inflammation or necrosis, and spontaneous or artificial hemolysis. This enzyme is found in various tissues, including the liver, heart, skeletal muscle, and red blood cells. An increase in AST levels can indicate damage or injury to these tissues. Therefore, AST is a useful marker for assessing liver function and diagnosing conditions such as liver disease, muscle disorders, and hemolytic anemia.

The endocrine part of the pancreas is involved in carbohydrate metabolism through the secretion of insulin into the blood. Insulin helps regulate blood sugar levels by allowing cells to take in glucose from the bloodstream and use it as energy. This process is crucial for maintaining normal blood sugar levels and preventing conditions like diabetes.

BUN (Blood Urea Nitrogen) and Creatinine are both kidney assays commonly used to assess kidney function. BUN measures the amount of nitrogen in the blood that comes from urea, a waste product produced by the liver and excreted by the kidneys. Creatinine is a waste product produced by the muscles and excreted by the kidneys. Elevated levels of BUN and Creatinine can indicate impaired kidney function. The other options listed are not kidney assays and are used to measure different aspects of liver function, pancreatic function, or glucose levels.

Increased AST and ALT with normal liver indicate that the source of the elevated levels is not the liver. AST (aspartate aminotransferase) and ALT (alanine aminotransferase) are enzymes found in various organs including the liver. Elevated levels of AST and ALT are typically seen in liver diseases such as hepatitis or cirrhosis. However, if these enzymes are elevated while the liver function tests remain normal, it suggests that the source of the elevated levels is not the liver. Other organs such as the heart or skeletal muscles may be the source of the increased AST and ALT.

BUN levels evaluate glomerular filtration and function.

The correct answer is "Mechanical, chemical." Hemostasis refers to the process of stopping bleeding, and it involves two main phases. The first phase is mechanical hemostasis, which involves the physical closure of blood vessels through the formation of a platelet plug and the constriction of blood vessels. The second phase is chemical hemostasis, which involves the activation of the coagulation cascade and the formation of a stable blood clot. Therefore, the correct order of the phases is mechanical followed by chemical.

Nuclear molding refers to the deformation of nuclei caused by the pressure exerted by other nuclei within the same cell or adjacent cells. This phenomenon occurs when the nuclei are compressed or distorted due to the close proximity of neighboring nuclei. The deformed nuclei may exhibit changes in shape and size, which can be observed under microscopic examination. Nuclear molding is a common occurrence in certain pathological conditions, such as tumors or inflammation, where the crowded cellular environment leads to compression and deformation of the nuclei.

Von Willebrand's disease is a genetic disorder that affects the blood's ability to clot. It is caused by a deficiency or dysfunction of von Willebrand factor, a protein that helps platelets stick together and form clots. Coagulation factor 8, also known as antihemophilic factor, is another protein involved in the clotting process. However, von Willebrand's disease primarily affects von Willebrand factor, not coagulation factor 8. Therefore, the correct answer is 8 because von Willebrand's disease is not a decrease in coagulation factor 8.

Preprandial refers to the period before a meal. In the context of blood chemistries, preprandial blood samples are ideal because they are taken before the individual has eaten. This ensures that the blood sample is not influenced by the digestion process or any substances that may be present in the food consumed. Preprandial blood samples provide a baseline measurement of the individual's blood chemistry, allowing for more accurate analysis and interpretation of the results.

ALT, also known as alanine aminotransferase, is an enzyme that is found in large amounts in the hepatocytes (liver cells) of dogs, cats, and primates. This enzyme plays a crucial role in the metabolism of amino acids, specifically alanine. Elevated levels of ALT in the blood can indicate liver damage or disease, making it an important marker in diagnosing liver conditions in these animals.

GGT, also known as gamma glutamyl transferase, is an enzyme that is commonly used as a marker for liver disease or corticosteroid excess. Elevated levels of GGT in the blood can indicate liver damage or dysfunction, as it is primarily found in liver cells. Additionally, GGT levels can be increased in individuals who are taking corticosteroid medications, which are commonly used to reduce inflammation and suppress the immune system. Therefore, GGT is a valuable diagnostic tool in assessing liver health and identifying potential corticosteroid excess.

Ecchymoses refers to the medical term for superficial hemorrhage, which is characterized by the appearance of small, flat, purple or red bruises on the skin. In this case, the description of a superficial hemorrhage of about 1 cm in diameter matches the definition of ecchymoses. This condition is typically caused by the rupture of blood vessels beneath the skin, resulting in the leakage of blood into the surrounding tissues.

Alkaline Phosphatase (ALKP) is an isoenzyme that is present in almost all tissues, including osteoblasts in bones, chondroblasts in cartilage, and the hepatobiliary system of the liver. It is commonly used as a marker for liver and bone disorders.

AST is an acronym for Aspartate transferase. This enzyme is found in various organs, especially the liver and heart. It plays a crucial role in amino acid metabolism and is commonly used as a diagnostic marker for liver and heart diseases. Measurement of AST levels in the blood can provide valuable information about the health and function of these organs.

A punch biopsy is a procedure in which a small circular piece of tissue is removed from the skin using a special tool called a punch. The size of the specimen that requires no sutures is 4mm. This means that if the circular piece of tissue removed during the biopsy is 4mm in diameter, no sutures are needed to close the wound.

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Von Willebrand's Disease is the most common inherited coagulation disorder in domestic animals. It is caused by a deficiency or abnormality of von Willebrand factor (vWF), a protein involved in blood clotting. This disorder can lead to prolonged bleeding and difficulty in forming blood clots, resulting in excessive bleeding from minor injuries or surgeries. It is commonly seen in dogs, particularly certain breeds such as Doberman Pinschers, German Shepherds, and Golden Retrievers.

Increased BUN levels can be caused by both prerenal and postrenal factors. Prerenal factors such as shock and dehydration can lead to decreased blood flow to the kidneys, resulting in impaired filtration and increased BUN levels. On the other hand, postrenal factors such as obstruction in the ureters, bladder, or urethra can cause urine to back up, leading to impaired excretion of waste products and increased BUN levels.

Centesis is a medical procedure that involves puncturing a body cavity or organ to remove fluid or perform other diagnostic or therapeutic interventions. In this procedure, a 21-gauge needle is most commonly used. The gauge of a needle refers to its diameter, with a higher gauge indicating a smaller needle. Additionally, the needle should be attached to a 60-ml syringe, which is the most commonly used size for this procedure. The syringe is used to collect the fluid that is being drained or to inject medication or contrast agents.

Elevations in ALKP (Alkaline Phosphatase) may indicate liver damage, Cushing's disease, and active bone growth in young pets. Alkaline phosphatase is an enzyme that is primarily found in the liver, bones, and intestines. An increase in ALKP levels can be a sign of liver dysfunction or damage, such as hepatitis or cholestasis. It can also be elevated in pets with Cushing's disease, a hormonal disorder that affects the adrenal glands. Additionally, ALKP levels can be elevated in young animals during periods of active bone growth, as the enzyme is involved in bone mineralization.

The correct answer is "osteoblasts, chondroblasts". ALKP stands for alkaline phosphatase, an enzyme that is used as a marker for bone formation. In young animals, active bone development occurs, and this is primarily carried out by osteoblasts and chondroblasts. Osteoblasts are responsible for bone formation, while chondroblasts are responsible for cartilage formation. Therefore, most of the ALKP in young animals comes from these two cell types.

The kidneys produce renin, which is an enzyme involved in regulating blood pressure, and erythropoietin, which is a hormone that stimulates the production of red blood cells in the bone marrow. These two substances play important roles in maintaining homeostasis within the body. Renin helps to control blood pressure by regulating the balance of salt and water in the body, while erythropoietin ensures an adequate supply of oxygen-carrying red blood cells to tissues and organs.

Increased levels of alanine aminotransferase (ALT) and aspartate aminotransferase (AST) with normal to mildly elevated levels may indicate reversible liver damage. ALT and AST are enzymes found in the liver, and their levels in the blood can be used as indicators of liver function. When the liver is damaged, such as in cases of hepatitis or liver disease, these enzymes are released into the bloodstream, causing their levels to rise. However, if the liver damage is reversible and the liver cells are able to recover, the levels of ALT and AST may return to normal or only slightly elevated.

Hyperglycemia is a condition characterized by high blood sugar levels. It can occur as a result of various factors, including diabetes mellitus, stress, and hyperadrenocorticism. In diabetes mellitus, the body is unable to properly regulate blood sugar levels due to a lack of insulin or insulin resistance. Stress can also lead to elevated blood sugar levels as the body releases stress hormones that increase glucose production. Hyperadrenocorticism, also known as Cushing's syndrome, involves excessive production of cortisol, which can contribute to hyperglycemia. Therefore, hyperglycemia can be caused by these conditions and factors.

An increase in ALT (alanine aminotransferase) will usually accompany an increase in GGT (gamma-glutamyl transferase). ALT is an enzyme found primarily in the liver, while GGT is an enzyme found in various tissues including the liver and bile ducts. Both ALT and GGT are commonly used as markers of liver damage or disease. An increase in ALT indicates liver cell damage, and this can often be accompanied by an increase in GGT levels. Therefore, an increase in ALT is likely to be associated with an increase in GGT.

Hypoglycemia may result from malabsorption, severe liver disease, and prolonged contact of the serum or plasma with the cellular component of the blood. In malabsorption, the body is unable to properly absorb nutrients, including glucose, leading to low blood sugar levels. Severe liver disease can impair the liver's ability to store and release glucose, causing hypoglycemia. Prolonged contact of the serum or plasma with the cellular component of the blood can lead to increased glucose utilization and depletion, resulting in hypoglycemia.

GGT, ALT, ALK, TBIL, AST, and ALKP are all liver chemistries. These are specific blood tests that measure the levels of various enzymes and substances in the blood that are produced by the liver. GGT (gamma-glutamyl transferase), ALT (alanine aminotransferase), ALK (alkaline phosphatase), TBIL (total bilirubin), AST (aspartate aminotransferase), and ALKP (alkaline phosphatase) are all commonly used liver function tests to assess liver health and function.

The appropriate size needle for an aspiration procedure is 21- to 25-gauge. This range of needle sizes is commonly used for aspiration procedures as they provide a good balance between being able to effectively withdraw fluid or tissue while minimizing patient discomfort. Larger gauge needles may be too large and cause unnecessary pain, while smaller gauge needles may not be able to effectively withdraw the desired sample.

Bile acids are formed in the liver, secreted into the bile, and stored in the gall bladder between meals. They play a crucial role in fat absorption and digestion by being secreted into the intestinal tract. Bile acids help break down fats into smaller molecules, making them easier to digest and absorb. This process is essential for the body to efficiently utilize dietary fats for energy and other functions.

When collecting a sample tube, it is important to immediately label it with the patient's name, patient ID number, date, time of collection, and owner's name. This information is crucial for proper identification and tracking of the sample. The hospital name and veterinarian's name may not be necessary for labeling the sample tube as they are not directly related to identifying the patient or the sample itself.

Histopathology evaluates cellular architecture.

About 75% of the kidney tissue must be non-functional before elevated values are detected. This means that a significant amount of kidney damage needs to occur before it can be detected through tests or measurements. It suggests that the kidneys have a large reserve capacity and can continue to function relatively well even with a substantial loss of tissue.

ALT is an acronym for Alanine aminotransferase. This is an enzyme found primarily in the liver and is involved in the metabolism of amino acids. It is commonly used as a marker for liver function and can be elevated in cases of liver damage or disease.

When a blood vessel is ruptured or torn, the body initiates the process of primary hemostasis. This involves the formation of a platelet plug at the site of injury to temporarily stop bleeding. The mechanical phase is a part of primary hemostasis where mechanical forces, such as the contraction of smooth muscle in the blood vessel wall, help in the formation and stabilization of the platelet plug. Therefore, both the mechanical phase and primary hemostasis are involved in the response to a ruptured or torn blood vessel.

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BAL stands for bronchoalveolar lavage. It is a medical procedure used to collect a sample of cells and fluids from the lungs. During the procedure, a bronchoscope is inserted into the airways, and a small amount of sterile fluid is flushed into a specific part of the lung. The fluid is then suctioned back out and collected for analysis. BAL is commonly used to diagnose and monitor lung diseases such as pneumonia, lung infections, and lung cancer. It helps in identifying the presence of abnormal cells, infection-causing organisms, and other substances in the lungs.

TBIL stands for total bilirubin, which is a test used to identify bile duct problems and certain types of anemia. Bilirubin is a yellow pigment produced when red blood cells break down. Elevated levels of bilirubin in the blood can indicate liver or gallbladder issues, such as bile duct obstruction. Additionally, certain types of anemia, such as hemolytic anemia, can also cause an increase in bilirubin levels. Therefore, the TBIL test is useful in diagnosing these conditions.

Bile acids, which are produced in the liver and stored in the gallbladder, are primarily reabsorbed in the ileum. The ileum is the final section of the small intestine, located between the jejunum and the large intestine. It is responsible for the absorption of nutrients, including bile acids, into the bloodstream. By reabsorbing bile acids in the ileum, the body can recycle them and use them again for the digestion and absorption of fats.

The chemical phase of hemostasis, also known as the coagulation cascade, refers to the series of chemical reactions that occur in response to tissue injury or damage to blood vessels. This cascade involves the activation of various clotting factors, leading to the formation of a blood clot to prevent further bleeding. The term "coagulation cascade" accurately describes this sequential process of clot formation, making it the correct answer.

Thrombocytopenia is the most common bleeding disorder of hemostasis in veterinary patients. This condition is characterized by a low platelet count, which impairs the blood's ability to clot properly. Platelets play a crucial role in hemostasis by forming clots to stop bleeding. When the platelet count is low, bleeding can occur spontaneously or be excessive even with minor injuries. Thrombocytopenia can be caused by various factors, including immune-mediated destruction of platelets, certain medications, infections, and underlying diseases. Prompt diagnosis and treatment are essential to manage this bleeding disorder in veterinary patients.

The given assessments, such as activated clotting time, buccal mucosal bleeding time, fibrinogen determination, prothrombin time test, activated partial thromboplastin time test, and PIVKA, are all used to evaluate and measure various aspects of coagulation and hemostasis. These assessments help in determining the clotting ability of blood, the time it takes for blood to clot, and the levels of specific clotting factors in the blood. They are essential in diagnosing and monitoring bleeding disorders, assessing the effectiveness of anticoagulant therapy, and evaluating overall coagulation function.

The correct answer includes Trypsin, Amylase, Lipase, and Glucose. These are all pancreas assays because they are tests that measure different aspects of pancreatic function. Trypsin, Amylase, and Lipase are enzymes produced by the pancreas that help with digestion. Elevated levels of these enzymes in the blood can indicate pancreatic inflammation or damage. Glucose is also included because the pancreas produces insulin, which regulates blood sugar levels. Dysfunction of the pancreas can lead to abnormal glucose levels.

Cats, horses, sheep, and pigs do not have bilirubin in their urine. Bilirubin is a yellow pigment that is formed as a breakdown product of red blood cells. It is normally excreted in the urine and gives it a yellow color. However, these animals have a different way of excreting bilirubin, either through their feces or by other means, which is why it is not present in their urine.

Petechia refers to the pinpoint hemorrhage on the skin or mucous membranes caused by the rupture of tiny blood vessels called capillaries. These tiny red or purple spots are typically less than 3mm in diameter and do not blanch when pressed. Petechiae can be caused by various factors including trauma, certain medical conditions, medications, or infections. They are commonly seen in conditions such as thrombocytopenia, sepsis, or vasculitis. Therefore, the correct answer is petechia.