What tube does blood catecholamine use?

summary

Catecholamine is a kind of nervous substance containing catechol and amino group. Catechol and amino groups are bound by L-tyrosine enzymatic steps in the sympathetic nerve, adrenal medulla and chromaffin cells. Generally, catecholamine refers to norepinephrine (NA), epinephrine (ADR) and dopamine (DA). What tube does blood catecholamine use? Let's talk about it

What tube does blood catecholamine use?

Dopamine is commonly used in the early stage of shock, neurogenic, cardiogenic and septic shock to enhance myocardial contractility and expand peripheral blood vessels to improve microcirculation. Epinephrine is commonly used in anaphylactic shock. The dosage of dopamine should not be too large when it is used to resist shock. Generally, 2 mg of dopamine is added to 500 ml of 5% glucose. The intravenous drip rate is controlled at 4-8 μ g per minute to maintain the systolic blood pressure at about 90 mmHg.

Gastric bleeding, with catecholamine 1-3 mg appropriate dilution after oral, in the stomach due to local effect of contraction of gastric mucosal blood vessels and produce hemostatic effect. Effects on cardiovascular system: catecholamines through β－ 1 receptor acts on the heart to increase heart rate, contractility, conduction velocity and cardiac output.

Effects on viscera: catecholamines through β－ 2 receptor relaxes smooth muscle, through α－ 1 receptor makes it contract. Effects on metabolism: catecholamines are involved in the regulation of thermogenesis by β The receptor increases oxygen consumption and produces heat. It can also promote the decomposition of stored energy in the body.

matters needing attention

Hypertension, coronary heart disease, arteriosclerosis, heart failure, hyperthyroidism, diabetes, severe renal insufficiency, anuria patients, microcirculation disorders in patients with shock, the elderly and pregnant women with caution! In addition, sudden withdrawal of the drug may lead to a drop in blood pressure. When it is necessary to stop the drug, gradually reduce the dose and slow down the dripping rate, and then stop the drug.