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[How does smoking affect blood pressure?]

P Omvik1

  • 1Medisinsk avdeling A, Haukeland Sykehus, Bergen.

Tidsskrift for Den Norske Laegeforening : Tidsskrift for Praktisk Medicin, Ny Raekke
|February 20, 1996
PubMed
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Smoking acutely raises blood pressure and heart rate due to nicotine. However, long-term smokers may have lower blood pressure, and antihypertensive therapy should not be delayed during smoking cessation.

Area of Science:

  • Cardiovascular Physiology
  • Pharmacology

Context:

  • Smoking is known to acutely increase blood pressure and heart rate.
  • Nicotine is the primary component responsible for these cardiovascular effects.
  • The immediate rise in blood pressure involves increased cardiac output and peripheral vascular resistance.

Purpose:

  • To explore the complex relationship between smoking, nicotine, and blood pressure regulation.
  • To investigate the impact of smoking on antihypertensive medication efficacy.
  • To address the paradox of acute hypertensive effects versus lower average blood pressure in smokers.

Summary:

  • Nicotine acutely elevates blood pressure by increasing cardiac output and vascular resistance, preceding catecholamine release.
  • Beta-blocker efficacy may be reduced in hypertensive smokers, while alpha-receptor blockers retain effectiveness.

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  • Epidemiological data paradoxically show lower blood pressure in smokers, possibly due to sustained smoking or post-cessation effects.

    • Impact:

    • Highlights the need for individualized antihypertensive treatment strategies in smokers.
    • Suggests that smoking cessation programs should consider the potential for post-cessation blood pressure increase.
    • Informs clinical practice regarding the timing of antihypertensive drug initiation in patients who smoke.