https://pedsanesthesia.net/wiki/index.php?action=history&feed=atom&title=TYK321TYK321 - Revision history2026-04-21T17:10:16ZRevision history for this page on the wikiMediaWiki 1.44.1https://pedsanesthesia.net/wiki/index.php?title=TYK321&diff=1150&oldid=prevWikiSysop: 1 revision imported2021-03-20T16:49:43Z<p>1 revision imported</p>
<table style="background-color: #fff; color: #202122;" data-mw="interface">
<tr class="diff-title" lang="en">
<td colspan="1" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td>
<td colspan="1" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 16:49, 20 March 2021</td>
</tr><tr><td colspan="2" class="diff-notice" lang="en"><div class="mw-diff-empty">(No difference)</div>
</td></tr></table>WikiSysophttps://pedsanesthesia.net/wiki/index.php?title=TYK321&diff=1149&oldid=prevhttps://pedsanesthesia.net/wikiOLD032021>TYK bot: Bot: Automated import of articles2018-09-16T21:37:41Z<p>Bot: Automated import of articles</p>
<p><b>New page</b></p><div>__NOTOC__<br />
Which is not anticipated in the perioperative period for pheochromocytoma<br />
resection?<br />
<br />
a) Bradycardia<br />
<br />
b) Hypertension<br />
<br />
c) Hypotension<br />
<br />
d) Tachycardia<br />
<br />
e) Hypoglycemia<br />
<div class="mw-customtoggle-TYK_Answer" style="text-align: right; color:#0000ff">Click for Answer</div><br />
<div class="mw-collapsible mw-collapsed" id="mw-customcollapsible-TYK_Answer"><br />
==Answer==<br />
Answer a. Induction, laryngoscopy and tumor manipulation all may cause severe<br />
sustained hypertension. A deepened plane of anesthesia and placement of an<br />
epidural catheter may attenuate hypertension from sympathetic stimulus, but the<br />
direct catecholamine release from tumor manipulation may require infusion of<br />
short-acting vasodilating agents (nitroprusside, nicardipine, magnesium sulfate)<br />
and beta-blockade (esmolol). Phentolamine (IV alpha-blockade) has a longer<br />
half-life (19 minutes) but may be useful prior to tumor resection. Once the<br />
tumor’s venous drainage is obliterated, unopposed vasodilation (and reflex<br />
tachycardia) may result. Hypovolemic hypotension may require fluid<br />
resuscitation and use of vasoconstricting agents (phenylephrine, norepinephrine<br />
or vasopressin). Relief of epinephrine secretion may lead to hyperinsulinemia<br />
and subsequent hypoglycemia. Bradycardia would be unexpected unless as an<br />
iatrogenic complication of therapy.<br />
==Notes==<br />
<references /><br />
:This question originally printed in the [http://www.amazon.com/Justin-L.-Lockman/e/B00FLG5AEE/ref=ntt_dp_epwbk_0 Pediatric Anesthesiology Review Topics] kindle book series, and appears courtesy of Naerthwyn Press, LLC.<br />
==Keywords==<br />
:<br />
</div><br />
----<br />
----<br />
<br />
<p style="text-align: center;">[[TYK320|<Prev Question]] --- [[TYK322|Next Question>]]</p><br />
<p style="text-align: center;">[[TYK About | About Test Your Knowledge]]</p></div>https://pedsanesthesia.net/wikiOLD032021>TYK bot