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Interventions for Tuberculosis Control and Elimination 2002

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ney function is impaired, the dosage must be adjusted, as excretion is exclusively<br />

renal. 56 Streptomycin has a limited ability to penetrate membranes,<br />

resulting in low concentrations of cerebrospinal fluid. 402<br />

Dosage. After large doses (up to three grams daily were given in the early<br />

trials 395 ) toxicity was frequent <strong>and</strong> dosage reductions were sought that would<br />

not compromise efficacy. 403 The current recommendation is to give<br />

15 mg/kg body weight (range 12 to 18), 8, 13 with a usual maximal dose of<br />

one gram in adults. The dosage is reduced in elderly patients. It has to<br />

be administered parenterally, usually by intramuscular injection, but intravenous<br />

application is preferred by some because of higher peak but lower<br />

trough levels. 404<br />

Adverse drug events (table 6). The main adverse effect of streptomycin is<br />

vestibulo-cochlear toxicity, which is usually 323,403,405 but not always, dosedependent.<br />

406 Hypersensitivity reactions are also relatively frequent <strong>and</strong><br />

important, 56 not only in patients, but also in health care personnel administering<br />

the medication. 407 Because of its penetration into amniotic fluid<br />

<strong>and</strong> its ototoxic effect on the fetus, 408 streptomycin should never be administered<br />

to pregnant women. 56 Streptomycin may cause neuromuscular blockade,<br />

409 not reversed by neostigmine. 410<br />

Table 6. Summary of adverse reactions from streptomycin with estimated frequencies<br />

of occurrence. Note that these are estimates of frequencies, which may<br />

vary across population groups.<br />

Frequent Common Infrequent Rare<br />

(� 5 per 100) (� 1 per 100 <strong>and</strong> (� 1 per 1,000 (< 1 per 1,000)<br />

< 5 per 100) <strong>and</strong> < 1 per 100)<br />

Vestibular Cochlear toxicity Renal damage Neuromuscular<br />

toxicity Hypersensitivity blockade<br />

reactions<br />

Interactions<br />

Effect of streptomycin potentiated: Ototoxicity of streptomycin is increased<br />

by diuretics such as furosemide 411 <strong>and</strong> ethacrynic acid. 412<br />

Effect of streptomycin opposed: None identified.<br />

Effect of drug potentiated by streptomycin: Like other aminoglycosides,<br />

streptomycin has a neuromuscular blocking effect 413 <strong>and</strong> may lead to pro-<br />

44

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