cold boost test

The cold boost test is an auxiliary test method for checking whether blood pressure is normal. Cold weather or cold stimulation of a part of the body can cause sympathetic excitation, peripheral vasoconstriction, and mild rise in blood pressure. Patients with orthostatic hypotension have no such reaction due to abnormal sympathetic reflex arc function, and hypertensive patients have higher response to cold stimuli than normal people due to increased excitability of the sympathetic nervous system. Through this examination, the lesion and the corresponding symptoms can be judged. Basic Information Specialist Category: Cardiovascular Examination Category: Other Examinations Applicable gender: whether men and women apply fasting: not fasting Analysis results: Below normal: Orthostatic hypotension is low or non-responsive. Normal value: Increased systolic blood pressure: 2.67-4kPa Above normal: 1. Most of the essential hypertension is high-response, and the blood pressure can be increased by >4.67kPa/3.33kPa (35mmHg/25mmHg), and it will not recover within 2min. 2. Blood pressure can also be elevated during cold stimulation of pheochromocytoma, but the highest blood pressure is lower than the blood pressure level at the time of onset or other induced tests. negative: Positive: Tips: Maintain a normal diet and schedule. This test should not be performed if the blood pressure has exceeded 21.3/13.3 kPa before the test. Normal value The systolic blood pressure increased by 1.6 kPa, the diastolic blood pressure increased by 1.5 kPa, and the maximum did not exceed 3.0 kPa. Most of the normal people are normal reactions, a few can be highly reactive, and the systolic blood pressure rises between 2.67 kPa and 4 kPa (20-30 mmHg). The blood pressure rises more than 2 minutes to restore the original level. Clinical significance Abnormal results: This test is mainly used to detect the responsiveness of the vascular nervous system in hypertensive patients and orthostatic hypotension. 1. Most of the essential hypertension is high-response, and the blood pressure can be increased by >4.67kPa/3.33kPa (35mmHg/25mmHg), and it will not recover within 2min. 2. Blood pressure can also be elevated during cold stimulation of pheochromocytoma, but the highest blood pressure is lower than the blood pressure level at the time of onset or other induced tests. 3. Orthostatic hypotension is low or no response. People who need to be examined: regular medical examination content. High results may be diseases: essential hypertension, pheochromocytoma, salt-sensitive hypertension considerations Forbidden before examination: Maintain a normal diet and schedule. Requirements for examination: nitroglycerin is prepared before the test to prevent angina pectoris in patients with recessive coronary heart disease. Inspection process Clinically, hypertension and pheochromocytoma-induced hypertension are difficult to identify. After using cold water stimulation, the difference in blood pressure between the two is helpful to identify primary hypertension and pheochromocytoma. Patients with pheochromocytoma have lower systolic blood pressure levels in their cold water tests than at their onset and other challenge tests. Essential hypertension, including the stage of unstable blood pressure in the early stage of hypertension, the patient's blood pressure increased in response to ice water stimulation, and the increase exceeded the drug challenge test. This test should not be performed if the blood pressure has exceeded 21.3/13.3 kPa before the test. In addition, this test can be performed together with the phentolamine inhibition test. Cold pressurization test (I) Coldstresstest I cold press test, pressure test, cold press test. Not suitable for the crowd Inappropriate population: If the blood pressure has exceeded 21.3/13.3 kPa before the test, it is not appropriate to conduct this test. Adverse reactions and risks Nothing.