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Atenolol

Antianginal Agent; Antihypertensive; Beta-Blocker, Beta-1 Selective

CCP: Angina

CCP: Hypertension

CCP: NSTEMI/STEMI

 

  • Hypersensitivity
  • Bradycardia
  • Heart block greater than first-degree (except in patients with a functioning artificial pacemaker); cardiogenic shock
  • Uncompensated cardiac failure
  • Documentation of allergenic cross-reactivity for beta-blockers
  • Cor pulmonale
  • Hypotension
  • Severe peripheral arterial disorders
  • Anesthesia with agents that produce myocardial depression
  • Pheochromocytoma (in the absence of alpha-blockade)
  • Metabolic acidosis

Cautions

  • Use with caution in patients with renal impairment; dosage adjustment required.
  • Bradycardia may be observed more frequently in elderly patients (>65 years of age); dosage reductions may be necessary.

CCP: Angina

  • 50 mg once daily PO

CCP: Hypertension

  • 25 mg once or twice daily

CCP: NSTEMI/STEMI

  • 25 to 50 mg twice daily PO titrate as tolerated based on heart rate and BP up to a usual maximum dose of 100 mg/day

 

  • Limited data available in infants and children < 2 years of age.

CCP: Arrhythmias

  • 0.5 to 1 mg/kg/day PO once daily

CCP: Hypertension

  • 0.5 to 1 mg/kg/day PO once daily

 

Not supplied by BCEHS

Tablet, Oral:

Tenormin: 50 mg, 100 mg [contains corn starch]

Generic: 25 mg, 50 mg, 100 mg

 

 

Competitively antagonizes beta-adrenergic stimulation, selectively blocks beta1-receptors with little or no effect on beta2-receptors except at high doses.

 

Onset: ≤ 1 hour

Peak effect: 2-4 hours

Duration: 12-24 hours

Half-life: 6-7 hours

Cardiovascular

  • Hypotension, cardiac failure, bradycardia, ventricular tachycardia, cold extremities, supraventricular tachycardia
  • Bundle branch block, atrial fibrillation, heart block, atrial flutter, orthostatic hypotension, pulmonary embolism

Central nervous system:

  • Fatigue, dizziness, depression
  • Abnormal dreams, lethargy, vertigo, drowsiness

Gastrointestinal

  • Nausea, diarrhea

Neuromuscular & skeletal

  • Limb pain

Respiratory

  • Bronchospasm
  • Atenolol crosses the placenta and is found in cord blood. Maternal use of atenolol may cause harm to the fetus.
  • Beta blockers are not recommended as first-line agents for hypertension.
  • Patients with bronchospastic disease should not receive beta-blockers.
  • Consider pre-existing conditions such as sick sinus syndrome before initiating.
  • Use with caution in patients with diabetes mellitus; may potentiate hypoglycemia and/or mask signs and symptoms.
  • Use with caution in patients with myasthenia gravis.
  • May precipitate or aggravate symptoms of arterial insufficiency in patients with PVD and Raynaud disease.
  • Adequate alpha-blockade is required prior to use of any beta-blocker in patients with an untreated pheochromocytoma.
  • May mask signs of hyperthyroidism (eg, tachycardia).
  • Beta-blockers without alpha1-adrenergic receptor blocking activity should be avoided in patients with Prinzmetal variant angina since unopposed alpha1-adrenergic receptors mediate coronary vasoconstriction and can worsen anginal symptoms.

 

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