Korean J Anesthesiol.  1989 Jun;22(3):447-454. 10.4097/kjae.1989.22.3.447.

Effect of Propranolol on Decreased K+ Concentration under Axillary Block of Brachial Plexus by Lidocaine with Epinephrine

• Lim HS
• Lee KC
• Kim TY
• Yoon JS

• KMID: 1751763
• DOI: http://doi.org/10.4097/kjae.1989.22.3.447

Abstract

Recently, interest has been increased on the role of catecholamines in extrarenal potassium homeostasis. This study has undertaken to investigate the effects of epinephrine added to lidocaine for axillary block in HR, MAP, ABG, blood sugar and electrolytes (Na+, K+), and the effects of propranolol, beta-adrenergic blocker, on the data. The patients admitted to our hospital for operation of upper extremities were divided into three groups. Group I was 10 patients blocked with lidocaine 30 ml. Group II was 14 patients blocked with lidocaine 30 ml with epinephrine 0.3 mg(1:100,000). Group III was 10 patients pretreated with propranolol (10u/kg) and blocked with lidocaine 30 ml with epinephrine. After block, the results were as follows. 1) MAP decreased in all group and group III decreased more than group I. 2) HR increased all group and group III decreased more than group I. 3) ABG showed hypoventilatory pattern due to sedative effect by diazepam (0.15mg/kg). 4) Blood sugar value was increased in group I and II, showed increasing tendency in group III, but this tendency was not significant. 5) Blood K+ concentration decreased significantly and the maximal decrease was 0.5 mEq/L in 30 min after block, but there was not significant decrease in group III. This results indicate that clinical dose of epinephrine(1;100,000) decrease blood K+ concentration significantly and propranolol (10u/kg) pretreatment prevent K+ decreasing effect of epinephrine. In clinical practice, it is suggested that much care must be paid to use of local anesthetics with epinephrine to hypokalemic patients.

Keyword

Anesthetic techniques: axillary blook-lidocaine with epinephrine; Electrolyte: potassium; beta-Adrenergic blocker: propranolol

MeSH Terms

Anesthetics, Local
Blood Glucose
Brachial Plexus*
Catecholamines
Diazepam
Electrolytes
Epinephrine*
Homeostasis
Humans
Hypnotics and Sedatives
Lidocaine*
Potassium
Propranolol*
Upper Extremity
Anesthetics, Local
Blood Glucose
Catecholamines
Diazepam
Electrolytes
Epinephrine
Hypnotics and Sedatives
Lidocaine
Potassium
Propranolol