Document Detail

Effect of octreotide on 24-h blood pressure profile in acromegaly.
MedLine Citation:
PMID:  9633796     Owner:  NLM     Status:  MEDLINE    
The aim of the study was to investigate the effect of octreotide, a somatostatin analog drug potentially able to inhibit growth hormone (GH), on the circadian blood pressure profile in a group of patients with acromegaly. Ten patients with GH-secreting pituitary adenoma were studied before and 6 months after treatment with subcutaneous octreotide 0.2 to 0.6 mg/day. Twenty-four hour blood pressure and heart rate were measured every 15 min at daytime (07:00 to 22:59) and every 30 min at nighttime (23:00 to 06:59) using a TM-2420 recorder. No correlation was found between GH levels and 24-h blood pressure in baseline conditions. Untreated patients had a significant nocturnal decrease of both systolic and diastolic blood pressure (P < .01), and all showed a circadian systolic or diastolic blood pressure rhythm. During octreotide treatment, 24 h as well as nighttime systolic and diastolic blood pressures significantly increased (P < .05), whereas daytime systolic and diastolic blood pressures did not change. Treated patients did not have a nocturnal decline in both systolic and diastolic blood pressures (P = NS), and eight lost their systolic or diastolic blood pressure rhythm. In conclusion, blood pressure circadian rhythm seems to be maintained in acromegaly. Octreotide treatment is associated with an increase of 24-h and nighttime blood pressure, and with loss of circadian blood pressure rhythm. Splanchnic vasoconstriction by this drug, shifting blood to peripheral vessels, may explain this phenomenon.
F Fallo; L Barzon; M Boscaro; E Casiglia; N Sonino
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Publication Detail:
Type:  Clinical Trial; Journal Article    
Journal Detail:
Title:  American journal of hypertension     Volume:  11     ISSN:  0895-7061     ISO Abbreviation:  Am. J. Hypertens.     Publication Date:  1998 May 
Date Detail:
Created Date:  1998-08-24     Completed Date:  1998-08-24     Revised Date:  2009-02-24    
Medline Journal Info:
Nlm Unique ID:  8803676     Medline TA:  Am J Hypertens     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  591-6     Citation Subset:  IM    
Division of Endocrinology, University of Padova, Italy.
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MeSH Terms
Acromegaly / drug therapy*,  physiopathology*,  surgery
Blood Pressure / drug effects*
Circadian Rhythm / physiology*
Heart Rate / drug effects
Hormones / therapeutic use*
Human Growth Hormone / blood
Middle Aged
Octreotide / therapeutic use*
Pituitary Gland / surgery
Treatment Outcome
Reg. No./Substance:
0/Hormones; 12629-01-5/Human Growth Hormone; 83150-76-9/Octreotide

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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