Abstract:
:1. Infusion of salbutamol (3.0 microgram/min after a bolus injection of 100 microgram) produced hypokalaemia in conscious dogs. 2. Measurement of arterial and coronary sinus potassium differences revealed no significant potassium loss from the heart with established hypokalaemia. 3. Shortly after the initial salbutamol bolus and before steady-state hypokalaemia had been achieved during salbutamol infusion, a prolongation of QTc occurred; this corresponded to a significant myocardial potassium of -0.12 mmol/l plasma. 4. Urinary electrolyte excretions indicated that the hypokalaemia was not due to urinary potassium loss. 5. It was deduced that potassium had moved intracellularly. No change in hydrogen ion status occurred to account for this. Pronounced rises in plasma insulin immunoreactivities during salbutamol infusions suggested this as one mechanism for potassium shifts.
journal_name
Clin Exp Pharmacol Physioljournal_title
Clinical and experimental pharmacology & physiologyauthors
Wahlqvist ML,Shanahan EA,Dennis PM,Pullan PT,Wilmshurst EGdoi
10.1111/j.1440-1681.1978.tb00717.xsubject
Has Abstractpub_date
1978-11-01 00:00:00pages
617-25issue
6eissn
0305-1870issn
1440-1681journal_volume
5pub_type
杂志文章abstract::The inhibitory effect of morphine on intestine was observed by following the intestinal transit of a charcoal meal. This inhibitory effect of morphine was antagonized by naloxone. In addition, the inhibitory effect of morphine was also suppressed by prior administration of yohimbine and phentolamine. However, prazosin...
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