The name of hemoglobin is derived from the Greek words for blood and sphere. Thus, hemoglobin is a spherical component of human blood. What is hemoglobin? Hemoglobin, as a component of human blood, is found in red blood cells (called erythrocytes) and is also known as red blood pigment. Hemoglobin owes this title to the … Hemoglobin: Function & Diseases
The pH characterizes aqueous solutions in terms of their acid or base content. It depends on the hydrogen ion concentration in the solution. In the medical field, the pH of blood mainly plays a role in the diagnosis of certain diseases. What is the pH value? By definition, pH represents the negative decatic logarithm of … PH Value: Structure, Function & Diseases
Synonyms Disturbance of heme synthesisPorphyria are a series of metabolic diseases in which the structure (synthesis) of a part of the transporter for oxygen in the blood (heme in hemoglobin) is disturbed. Introduction In the body, thousands of metabolic steps are carried out by enzymes that enable (catalyze) biochemical reactions. If, either due to hereditary … Porphyria
Symptoms The different porphyrias are mainly classified according to the type and location of symptoms into liver-associated (hepatic), red blood cell formation-related (erythropoietic), skin-associated (cutaneous), non-skin-associated (non-cutaneous), and acute and non-acute porphyrias. Many porphyrias are characterized by long inconspicuous phases and are sometimes only discovered in later decades of life. Mild forms often remain hidden … Symptoms | Porphyria
Therapy No causal therapy currently exists for any type of porphyria. Within a relapse, the symptoms can be alleviated by the administration of hemin. This makes the body believe that there is a sufficient amount of heme, and thus leads to less of the unwanted (and responsible for the symptoms) precursors of heme being formed. … Therapy | Porphyria
Functional magnetic resonance imaging (fMRI) is a magnetic resonance imaging technique used to image physiological changes in the body. It is based on the physical principles of nuclear magnetic resonance. In a narrower sense, the term is used in connection with the examination of activated brain areas. What is functional magnetic resonance imaging? Classical MRI … Functional Magnetic Resonance Imaging: Treatment, Effects & Risks
Pulmonary embolism In acute pulmonary embolism, a vessel in the lung is displaced by a blood clot. A lack of oxygen in the blood of the patient can be detected here. Since the patient no longer has sufficient oxygen, he breathes more frequently. However, this hyperventilation usually causes a drop in the carbon dioxide concentration, … Pulmonary embolism | Blood gas analysis
General In a blood gas analysis (short: BGA) the concentrations of certain gases in the blood are measured. These gases, which include oxygen (O2) and carbon dioxide (CO2), have a certain partial pressure (pO2 and pCO2) in the blood, which should normally be stable and thus maintain the vitality of the organism. In addition, other … Blood gas analysis
Standard values blood gas analysis Oxygen: The partial pressure of oxygen in the blood can vary slightly depending on age. It should always be between 80 mmHg and 100 mmHg. In patients over 75 years of age, it can also be below 80 mmHg. Deviations below the lower reference value are also possible in the … Standard values blood gas analysis | Blood gas analysis
Definition Haemoglobin is a protein found in the red blood cells, the erythrocytes. It gives the cells their red colour. Part of this protein is an iron ion. This iron atom is present in the bivalent form, it is doubly positively charged (Fe2+). In the case of methaemoglobin, the iron ion is present in the … Methaemoglobinaemia Methämoglobina
Symptoms As already mentioned, the presence of methemoglobin in the blood is normal to a certain extent. Approximately 1.5% of the hemoglobin content is formed by methemoglobin. From a quantity of approx. 10%, symptoms of oxygen deficiency occur. The so-called cyanosis becomes visible in the colour of the skin, which appears greyish to bluish. If … Symptoms | Methaemoglobinaemia Methämoglobina
Introduction For the doctor it is part of the daily business, for the patient it can bring sweat to the brow: a blood test. It is often a part of the basic programme of medical activity. But why is a blood test carried out so often and on so many different occasions? What is hidden … Blood test
