Definition of pressor in US English:



  • attributive Producing an increase in blood pressure by stimulating constriction of the blood vessels.

    ‘a pressor response’
    • ‘Of the cardiovascular changes observed during the anaphylaxis in the pithed animals, the initial pressor response was significantly attenuated by the extract.’
    • ‘L-NAME at pressor doses tends to decrease urine volume compared with control, whereas L-NAME at a subpressor dose induces diuresis.’
    • ‘Importantly, the doses used for antidiuresis are markedly lower than those needed for pressor support.’
    • ‘Almost any infusate can be instilled at a rapid rate through an intraosseous line, including blood and blood products, Plasmanate, glucose, crystalloids, pressor agents including epinephrine, dopamine and dobutamine, and atropine.’
    • ‘There is usually no need to taper pressor drugs, antibiotics, nutrition, or most other critical care treatments.’
    • ‘Pediatric Advanced Life Support guidelines for VT / VF are consistent with the adult guidelines, except that epinephrine is the only recommended pressor agent.’
    • ‘The pressor effects of epinephrine may be counteracted by medications such as phentolamine and phenoxybenzamine.’
    • ‘With a half-life of 10 to 35 minutes, the pressor effects after a single dose last about 30 to 60 minutes.’
    • ‘Such protective action on pressor response, if any, may appear as an alleviation of reduced coronary flow in isolated hearts.’
    • ‘In an animal model of hepatopulmonary syndrome, NO-dependent increases in HO - 1 expression appeared to contribute to the blunted hypoxic pressor response seen in this condition.’
    • ‘Teramoto et al raise the interesting point that an increase in nitric oxide is responsible for a poor or absent hypoxic pressor response as a cause of hypoxemia.’
    • ‘High erythropoietin levels can elevate blood pressure either via a polycythemia/hyperviscosity mechanism or by direct pressor effects.’
    • ‘Vascular pressor responses to hypoxia are increased in patients with obstructive sleep apnea.’
    • ‘If a pressor agent must be used, a direct-acting alpha-adrenergic agonist such as norepinephrine is preferable because it acts without releasing intracellular amines.’
    • ‘The patient died suddenly in less than 12 hours after presentation, in spite of supportive measures, including ventilation, antibiotic coverage, pressor therapy, and multiple transfusions of blood products.’
    • ‘Women destined to develop HIP reportedly lose refractoriness to the pressor effects of infused angiotensin II by wk 18 of pregnancy, whereas calcium supplementation increases refractoriness to angiotensin.’
    • ‘This finding suggests a direct pressor effect in patients with normal function of the posterior lobe of the pituitary gland.’
    • ‘None required pressor support or steroid treatment for hypotension.’
    • ‘Imadojemu and coworkers studied the mechanism of the pressor response in 11 patients with obstructive sleep apnea.’
    • ‘Later that day, he developed cardiogenic shock, requiring numerous pressor agents and the aortic balloon pump to maintain his cardiac output.’