Apo-Timol, Blocadren, Novo-Timol
Therapeutic: antihypertensives, vascular headache suppressants
Pharmacologic: beta blockers
Hypertension (alone or with other agents). Prevention of MI. Prevention of migraine headaches. Unlabeled Use: Ventricular arrhythmias. Essential tremor. Anxiety.
Blocks stimulation of beta1 (myocardial)– and beta2 (pulmonary, vascular, and uterine)–adrenergic receptor sites. Therapeutic Effects: Decreased heart rate and blood pressure. Prevention of MI. ↓ frequency of migraine headache.
Adverse Reactions/Side Effects
CNS: fatigue, weakness, anxiety, depression, dizziness, drowsiness, insomnia, memory loss, mental status changes, nervousness, nightmares. EENT: blurred vision, dry eyes, nasal stuffiness. Resp: bronchospasm, wheezing. CV: ARRHYTHMIAS, BRADYCARDIA, CHF, PULMONARY EDEMA, orthostatic hypotension, peripheral vasoconstriction. GI: constipation, diarrhea, nausea. GU: erectile dysfunction, decreased libido. Derm: itching, rashes. Endo: hyperglycemia, hypoglycemia. MS: arthralgia, back pain, muscle cramps. Neuro: paresthesia. Misc: ANAPHYLAXIS (RARE).
PHYSICAL THERAPY IMPLICATIONS
Examination and Evaluation
Assess heart rate, ECG, and heart sounds, especially during exercise (See Appendices G, H). Although sometimes used to treat certain arrhythmias, this drug can unmask or precipitate new arrhythmias (proarrhythmic effect). Report an unusually slow heart rate (bradycardia) or signs of other arrhythmias, including palpitations, chest discomfort, shortness of breath, fainting, and fatigue/weakness.
Assess routinely for signs of CHF and pulmonary edema, including dyspnea, rales/crackles, weight gain, peripheral edema, and jugular venous distention. Report these signs to the physician immediately.
Assess blood pressure (BP) periodically and compare to normal values (See Appendix F) to help document antihypertensive effects.
Assess BP when patient assumes a more upright position (lying to standing, sitting to standing, lying to sitting). Document orthostatic hypotension and contact physician when systolic BP falls >20 mm Hg, or diastolic BP falls >10 mm Hg.
Watch for signs of peripheral vasoconstriction, such as extreme coldness in the hands and feet, cyanosis, and muscle cramping. Notify physician of severe or prolonged signs of vasoconstriction.
Assess any back pain, joint pain, or muscle cramps to rule out musculoskeletal pathology; that is, try to determine if pain is drug induced rather than caused by anatomic or biomechanical problems.
Assess signs of paresthesia (numbness, tingling), and perform objective tests, including electroneuromyography and sensory testing, to document any drug-related neuropathic changes.
Monitor mood and personality changes, including depression, anxiety, nervousness, memory loss, or other changes in mental status. Notify physician if these changes become problematic
Assess dizziness and drowsiness that might affect gait, balance, and other functional activities (See Appendix C). Report balance problems and functional limitations to the physician, and caution the patient and family/caregivers to guard against falls and trauma.
Monitor excessive fatigue or weakness. Beta blockers often cause some degree of fatigue and weakness, but any sudden or severe change in muscle strength or energy levels should be reported.
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