Bezold-Jarisch reflex: Difference between revisions

Jump to navigation Jump to search
m (Bot: Adding CME Category::Cardiology)
 
(28 intermediate revisions by 4 users not shown)
Line 1: Line 1:
__NOTOC__
__NOTOC__
{{SI}}
{{SI}}
{{CMG}}; '''Associate Editor-In-Chief:''' {{CZ}}; [[User:Rim Halaby|Rim Halaby]]
{{CMG}}; '''Associate Editor-In-Chief:''' {{CZ}}; {{Rim}}; {{M.P}}


{{SK}} Bezold's reflex, Bezold-Jarisch response, Jarisch-Bezold reflex, BJR
{{SK}} Bezold's reflex, Bezold-Jarisch response, Jarisch-Bezold reflex, BJR
Line 72: Line 72:
{|style="width:80%; height:100px" border="1"
{|style="width:80%; height:100px" border="1"
|style="height:100px"; style="width:25%" border="1" bgcolor="LightSteelBlue" | '''Cardiovascular'''
|style="height:100px"; style="width:25%" border="1" bgcolor="LightSteelBlue" | '''Cardiovascular'''
|style="height:100px"; style="width:75%" border="1" bgcolor="Beige" | [[Aortic stenosis]], [[arrhythmias]], Bradbuy-Eggleston syndrome, [[carotid sinus hypersensitivity]], [[chronic heart failure]], [[coronary catheterization]], [[PCI|coronary reperfusion]], [[digitalis]], [[bleeding|excessive bleeding]], [[hypertrophic cardiomyopathy]], [[myocardial infarction|inferior wall myocardial infarction]], [[myocarditis]], [[pericarditis]], [[prinzmetal's angina]], [[radiofrequency catheter ablation]], [[temporary cardiac pacing]], [[vasovagal syncope]]
|style="height:100px"; style="width:75%" border="1" bgcolor="Beige" | [[Aortic stenosis]], [[arrhythmias]], [[Bradbury-Eggleston syndrome]], [[carotid sinus hypersensitivity]], [[chronic heart failure]], [[coronary catheterization]], [[PCI|coronary reperfusion]], [[digitalis]], [[bleeding|excessive bleeding]], [[hypertrophic cardiomyopathy]], [[myocardial infarction|inferior wall myocardial infarction]], [[myocarditis]], [[pericarditis]], [[prinzmetal's angina]], [[radiofrequency catheter ablation]], [[temporary cardiac pacing]], [[vasovagal syncope]]
|-
|-
|-bgcolor="LightSteelBlue"
|-bgcolor="LightSteelBlue"
Line 88: Line 88:
|-bgcolor="LightSteelBlue"
|-bgcolor="LightSteelBlue"
| '''Drug Side Effect'''
| '''Drug Side Effect'''
|bgcolor="Beige"| [[ACE inhibitor]], [[acetophenazine]], [[adriamycin]], [[aliskiren|aliskiren (direct renin inhibitor)]], [[alpha blockers]], [[angiotensin II receptor antagonist]], [[BNP]], [[calcium channel blocker]], [[cannabinoid]], [[triazole|central 3-amino-1,2,4-triazole(ATZ)]], [[clonidine]], [[codeine withdrawal]], [[colchicine toxicity]], [[deoxycorticosterone|deoxycorticosterone acetate]], [[digitalis]], [[dihydrocapsaicin]], [[disulfiram|disulfiram toxicity]], [[dobutamine]], [[ketanserin]], L-S-nitrosocysteine, [[MAO inhibitors]], [[mibefradil]], [[nandrolone]], [[nitrates]], [[sodium nitroprusside]],  [[ondansetron]], phenylbiguanide, piperamide analogue, [[pramipexole]], [[prazosin]], [[Prostacyclin|prostacyclin(PGI2)]], [[serotonin receptor agonist]], [[cholecystokinin|systemic cholecystokinin]], [[tamsulosin]], [[thiazole|thiazole derivatives]], [[tricyclic antidepressants]], [[zotepine]]
|bgcolor="Beige"| [[ACE inhibitor]], [[acetophenazine]], [[adriamycin]], [[aliskiren|aliskiren (direct renin inhibitor)]], [[alpha blockers]], [[ARB]], [[BNP]], [[calcium channel blocker]], [[cannabinoid]], [[triazole|central 3-amino-1,2,4-triazole(ATZ)]], [[clonidine]], [[codeine withdrawal]], [[colchicine toxicity]], [[deoxycorticosterone|deoxycorticosterone acetate]], [[digitalis]], [[dihydrocapsaicin]], [[disulfiram|disulfiram toxicity]], [[dobutamine]], [[ketanserin]], L-S-nitrosocysteine, [[MAO inhibitors]], [[mibefradil]], [[nandrolone]], [[nitrates]], [[sodium nitroprusside]],  [[ondansetron]], [[biguanide|phenylbiguanide]], piperamide analogue, [[pramipexole]], [[prazosin]], [[Prostacyclin|prostacyclin(PGI2)]], [[serotonin receptor agonist]], [[cholecystokinin|systemic cholecystokinin]], [[tamsulosin]], [[thiazole|thiazole derivatives]], [[tricyclic antidepressants]], [[zotepine]]
|-bgcolor="LightSteelBlue"
|-bgcolor="LightSteelBlue"
| '''Ear Nose Throat'''
| '''Ear Nose Throat'''
Line 95: Line 95:
|-bgcolor="LightSteelBlue"
|-bgcolor="LightSteelBlue"
| '''Endocrine'''
| '''Endocrine'''
|bgcolor="Beige"| [[Acute pancreatitis]], [[addisonian crisis ]], [[addison's Disease]],  [[congenital adrenal hyperplasia due to 21-hydroxylase deficiency]], [[congenital adrenal hyperplasia due to 3 beta-hydroxysteroid dehydrogenase  deficiency]], [[diabetes insipidus]], [[diabetes mellitus type 2]], [[diabetic ketoacidosis]], [[hyperosmolar non-ketotic diabetic coma]], [[multiple endocrine neoplasia]],  [[panhypopituitarism]], [[pheochromocytoma]], [[hypoaldosteronism|pseudohypoaldosteronism type 1]], [[Waterhouse-Friederichsen syndrome]], [[Wolfram's disease]], X-Linked Adrenal Hypoplasia Congenita
|bgcolor="Beige"| [[Acute pancreatitis]], [[addisonian crisis]], [[Addison's disease]],  [[congenital adrenal hyperplasia due to 21-hydroxylase deficiency]], [[congenital adrenal hyperplasia due to 3 beta-hydroxysteroid dehydrogenase  deficiency]], [[diabetes insipidus]], [[diabetes mellitus type 2]], [[diabetic ketoacidosis]], [[hyperosmolar non-ketotic diabetic coma]], [[multiple endocrine neoplasia]],  [[panhypopituitarism]], [[pheochromocytoma]], [[hypoaldosteronism|pseudohypoaldosteronism type 1]], [[Waterhouse-Friederichsen syndrome]], [[Wolfram's disease]], [[CAH|X-Linked congemital adrenal hyperplasia]]
|-  
|-  
|-bgcolor="LightSteelBlue"
|-bgcolor="LightSteelBlue"
| '''Environmental'''
| '''Environmental'''
|bgcolor="Beige"| [[Dihydrocapsaicin]], [[excessive sweating]], [[grayanotoxin|grayanotoxin-contaminated honey]], [[heat stroke]], [[malnutrition]][[marijuana]], [[veratridine]]
|bgcolor="Beige"| [[Dihydrocapsaicin]], [[excessive sweating]], [[grayanotoxin|grayanotoxin-contaminated honey]], [[heat stroke]], [[malnutrition]], [[marijuana]], [[veratridine]]
|-
|-
|-bgcolor="LightSteelBlue"
|-bgcolor="LightSteelBlue"
| '''Gastroenterologic'''
| '''Gastroenterologic'''
|bgcolor="Beige"| [[Acute pancreatitis]], [[diarrhoea]], [[dysentery]], [[food poisoning]], [[hyperemesis Gravidarum]], [[vomiting]]
|bgcolor="Beige"| [[Acute pancreatitis]], [[diarrhea]], [[dysentery]], [[food poisoning]], [[hyperemesis gravidarum]], [[vomiting]]
|-
|-
|-bgcolor="LightSteelBlue"
|-bgcolor="LightSteelBlue"
| '''Genetic'''
| '''Genetic'''
|bgcolor="Beige"| [[congenital adrenal hyperplasia due to 21-hydroxylase deficiency]], [[congenital adrenal hyperplasia due to 3 beta-hydroxysteroid dehydrogenase  deficiency]], [[cystinosis]], [[Riley-Day syndrome|familial dysautonomia (Riley-Day syndrome)]], [[Fanconi syndrome]], [[multiple endocrine neoplasia]], [[pseudohypoaldosteronism|pseudohypoaldosteronism type 1]], [[Shy-Drager syndrome]], [[Wolfram's disease]], X-Linked Adrenal Hypoplasia Congenita
|bgcolor="Beige"| [[Congenital adrenal hyperplasia due to 21-hydroxylase deficiency]], [[congenital adrenal hyperplasia due to 3 beta-hydroxysteroid dehydrogenase  deficiency]], [[cystinosis]], [[Riley-Day syndrome|familial dysautonomia]], [[Fanconi syndrome]], [[multiple endocrine neoplasia]], [[pseudohypoaldosteronism|pseudohypoaldosteronism type 1]], [[Riley-Day syndrome]], [[Shy-Drager syndrome]], [[Wolfram's disease]], [[CAH|X-Linked congenital adrenal hyperplasia]]
|-
|-
|-bgcolor="LightSteelBlue"
|-bgcolor="LightSteelBlue"
Line 115: Line 115:
|-bgcolor="LightSteelBlue"
|-bgcolor="LightSteelBlue"
| '''Iatrogenic'''
| '''Iatrogenic'''
|bgcolor="Beige"| [[Coronary catheterization]], [[PCI|Coronary reperfusion]], [[dialysis]], [[anesthesia|high spinal blockade]], [[anesthesia|interscalene brachial plexus block (ISBPB)]], [[pyrexia]], [[radiofrequency catheter ablation]], [[severe dehydration]], [[surgery|surgery in prone position]], [[temporary cardiac pacing]], [[vomiting]], [[radiation injury|whole-body acute irradiation]]
|bgcolor="Beige"| [[Coronary catheterization]], [[PCI|coronary reperfusion]], [[dialysis]], [[anesthesia|high spinal blockade]], [[anesthesia|interscalene brachial plexus block]], [[pyrexia]], [[radiofrequency catheter ablation]], [[severe dehydration]], [[surgery|surgery in prone position]], [[temporary cardiac pacing]], [[vomiting]], [[radiation injury|whole-body acute irradiation]]
|-
|-
|-bgcolor="LightSteelBlue"
|-bgcolor="LightSteelBlue"
Line 123: Line 123:
|-bgcolor="LightSteelBlue"
|-bgcolor="LightSteelBlue"
| '''Musculoskeletal/Orthopedic'''
| '''Musculoskeletal/Orthopedic'''
|bgcolor="Beige"|  
|bgcolor="Beige"| No underlying causes
|-
|-
|-bgcolor="LightSteelBlue"
|-bgcolor="LightSteelBlue"
| '''Neurologic'''
| '''Neurologic'''
|bgcolor="Beige"| Bradbuy-Eggleston syndrome, [[cannabinoid]], [[dementia with Lewy bodies]], [[Riley-Day syndrome|familial dysautonomia (Riley-Day syndrome)]], [[Guillain-Barre syndrome]], [[panhypopituitarism]], [[autonomic neuropathy|paraneoplastic autonomic neuropathy]], [[Parkinson disease]], [[Shy-Drager syndrome]], [[vasovagal syncope]], [[veratridine]]
|bgcolor="Beige"| [[Bradbury-Eggleston syndrome]], [[cannabinoid]], [[dementia with Lewy bodies]], [[Riley-Day syndrome|familial dysautonomia]], [[Guillain-Barre syndrome]], [[panhypopituitarism]], [[autonomic neuropathy|paraneoplastic autonomic neuropathy]], [[parkinson's disease]], [[Riley-Day syndrome]], [[Shy-Drager syndrome]], [[vasovagal syncope]], [[veratridine]]
|-
|-
|-bgcolor="LightSteelBlue"
|-bgcolor="LightSteelBlue"
Line 135: Line 135:
|-bgcolor="LightSteelBlue"
|-bgcolor="LightSteelBlue"
| '''Obstetric/Gynecologic'''
| '''Obstetric/Gynecologic'''
|bgcolor="Beige"| [[Hyperemesis Gravidarum]]
|bgcolor="Beige"| [[Hyperemesis gravidarum]]
|-
|-
|-bgcolor="LightSteelBlue"
|-bgcolor="LightSteelBlue"
Line 159: Line 159:
|-bgcolor="LightSteelBlue"
|-bgcolor="LightSteelBlue"
| '''Renal/Electrolyte'''
| '''Renal/Electrolyte'''
|bgcolor="Beige"| [[Cystinosis]], [[dialysis]], [[fanconi syndrome]], [[renal failure]]
|bgcolor="Beige"| [[Cystinosis]], [[dialysis]], [[Fanconi syndrome]], [[renal failure]]
|-
|-
|-bgcolor="LightSteelBlue"
|-bgcolor="LightSteelBlue"
Line 167: Line 167:
|-bgcolor="LightSteelBlue"
|-bgcolor="LightSteelBlue"
| '''Sexual'''
| '''Sexual'''
|bgcolor="Beige"| [[congenital adrenal hyperplasia due to 21-hydroxylase deficiency]], [[congenital adrenal hyperplasia due to 3 beta-hydroxysteroid dehydrogenase  deficiency]]
|bgcolor="Beige"| [[Congenital adrenal hyperplasia due to 21-hydroxylase deficiency]], [[congenital adrenal hyperplasia due to 3 beta-hydroxysteroid dehydrogenase  deficiency]]
|-
|-
|-bgcolor="LightSteelBlue"
|-bgcolor="LightSteelBlue"
| '''Trauma'''
| '''Trauma'''
|bgcolor="Beige"| [[bleeding|Excessive bleeding]], [[anesthesia|interscalene brachial plexus block (ISBPB)]]
|bgcolor="Beige"| [[bleeding|Excessive bleeding]], [[anesthesia|interscalene brachial plexus block]]
|-
|-
|-bgcolor="LightSteelBlue"
|-bgcolor="LightSteelBlue"
Line 196: Line 196:
*[[Addisonian crisis ]]
*[[Addisonian crisis ]]


*[[Addison's Disease ]]
*[[Addison's disease]]


*[[Adriamycin]]
*[[Adriamycin]]
Line 202: Line 202:
*[[Aging]]
*[[Aging]]


*[[Aliskiren|Aliskiren(Direct renin inhibitor)]]
*[[Aliskiren|Aliskiren (direct renin inhibitor)]]


*[[Alpha blockers]]
*[[Alpha blockers]]
Line 218: Line 218:
*[[BNP]]
*[[BNP]]


*Bradbuy-Eggleston syndrome
*[[Bradbury-Eggleston syndrome]]


*[[Calcium channel blocker]]
*[[Calcium channel blocker]]
Line 232: Line 232:
*[[Clonidine ]]
*[[Clonidine ]]


*[[cocaine|Cocaine overdose   ]]
*[[cocaine|Cocaine overdose]]


*[[codeine|Codeine withdrawal     ]]
*[[codeine|Codeine withdrawal]]


*[[Colchicine toxicity ]]
*[[Colchicine toxicity ]]


*[[congenital adrenal hyperplasia due to 21-hydroxylase deficiency]]
*[[Congenital adrenal hyperplasia due to 21-hydroxylase deficiency]]


*[[congenital adrenal hyperplasia due to 3 beta-hydroxysteroid dehydrogenase  deficiency]]
*[[Congenital adrenal hyperplasia due to 3 beta-hydroxysteroid dehydrogenase  deficiency]]


*[[Coronary catheterization]]
*[[Coronary catheterization]]
Line 248: Line 248:
*[[Cystinosis ]]
*[[Cystinosis ]]


*[[Dementia with Lewy bodies ]]
*[[Dementia with Lewy bodies]]


*[[Deoxycorticosterone|Deoxycorticosterone acetate]]
*[[Deoxycorticosterone|Deoxycorticosterone acetate]]


*[[Diabetes insipidus   ]]
*[[Diabetes insipidus]]


*[[Diabetes mellitus type 2]]
*[[Diabetes mellitus type 2]]
*[[Diabetic ketoacidosis]]
{{col-break|width=33%}}
{{col-break|width=33%}}
*[[Diabetic ketoacidosis]]
*[[Dialysis]]
*[[Dialysis]]


*[[Diarrhoea]]
*[[Diarrhea]]


*[[Digitalis]]
*[[Digitalis]]
Line 266: Line 266:
*[[Dihydrocapsaicin]]
*[[Dihydrocapsaicin]]


*[[disulfiram|Disulfiram toxicity   ]]
*[[disulfiram|Disulfiram toxicity]]


*[[Dobutamine]]
*[[Dobutamine]]


*[[Dysentery ]]
*[[Dysentery]]


*[[Endotoxins]]
*[[Endotoxins]]


*[[bleeding|Excessive bleeding ]]
*[[bleeding|Excessive bleeding]]


*[[dieting|Excessive dieting     ]]
*[[dieting|Excessive dieting]]


*[[Excessive sweating]]
*[[Excessive sweating]]
Line 282: Line 282:
*[[exercise|Exercise training]]
*[[exercise|Exercise training]]


*[[Riley-Day syndrome|Familial dysautonomia (Riley Day syndrome)]]
*[[Riley-Day syndrome|Familial dysautonomia]]


*[[Fanconi syndrome     ]]
*[[Fanconi syndrome]]


*[[Food poisoning ]]
*[[Food poisoning ]]
Line 296: Line 296:
*[[anesthesia|High spinal blockade]]
*[[anesthesia|High spinal blockade]]


*[[HIV/AIDS     ]]
*[[HIV/AIDS]]


*[[Hyperemesis Gravidarum    ]]
*[[Hyperemesis gravidarum]]


*[[Hyperosmolar non-ketotic diabetic coma]]
*[[Hyperosmolar non-ketotic diabetic coma]]


*[[Hypertrophic cardiomyopathy]]
*[[Hypertrophic cardiomyopathy]]
Line 306: Line 306:
*[[myocardial infarction|Inferior wall myocardial infarction]]
*[[myocardial infarction|Inferior wall myocardial infarction]]


*[[anesthesia|Interscalene brachial plexus block (ISBPB)]]
*[[anesthesia|Interscalene brachial plexus block]]


*[[Ketanserin]]
*[[Ketanserin]]
Line 320: Line 320:
*[[Mibefradil]]
*[[Mibefradil]]


*[[Multiple endocrine neoplasia     ]]
*[[Multiple endocrine neoplasia]]


*[[Myocarditis]]
*[[Myocarditis]]
Line 327: Line 327:


*[[Nitrates]]
*[[Nitrates]]
*[[Ondansetron]]
{{col-break|width=33%}}
{{col-break|width=33%}}
*[[Ondansetron]]
*[[Panhypopituitarism    ]]
*[[Panhypopituitarism    ]]


Line 344: Line 344:
*Piperamide analogue
*Piperamide analogue


*[[Pramipexole   ]]
*[[Pramipexole]]


*[[Prazosin       ]]
*[[Prazosin]]


*[[Prinzmetal's angina ]]
*[[Prinzmetal's angina ]]
Line 354: Line 354:
*[[Prostacyclin|Prostacyclin(PGI2)]]
*[[Prostacyclin|Prostacyclin(PGI2)]]


*[[Pseudohypoaldosteronism|Pseudohypoaldosteronism type 1       ]]
*[[Pseudohypoaldosteronism|Pseudohypoaldosteronism type 1]]


*[[Pyrexia]]
*[[Pyrexia]]


*[[Radiofrequency catheter ablation]]
*[[Radiofrequency catheter ablation]]


*[[Renal failure]]
*[[Renal failure]]
*[[Riley-Day syndrome]]


*[[Serotonin receptor agonist]]
*[[Serotonin receptor agonist]]


*[[Severe dehydration ]]
*[[Severe dehydration]]


*[[Shy-Drager syndrome]]
*[[Shy-Drager syndrome]]
Line 390: Line 392:
*[[Vomiting]]
*[[Vomiting]]


*[[Waterhouse-Friederichsen syndrome       ]]
*[[Waterhouse-Friederichsen syndrome]]


*[[radiation injury|Whole-body acute irradiation       ]]
*[[radiation injury|Whole-body acute irradiation]]


*[[Wolfram's disease ]]
*[[Wolfram's disease ]]


*X-Linked Adrenal Hypoplasia  Congenita
*[[CAH|X-Linked congenital adrenal hyperplasia]]


*[[Zotepine ]]
*[[Zotepine ]]
Line 403: Line 405:
==References==
==References==
{{Reflist|2}}
{{Reflist|2}}
{{WikiDoc Help Menu}}
{{WikiDoc Sources}}
[[CME Category::Cardiology]]


[[Category:Cardiovascular diseases]]
[[Category:Cardiovascular diseases]]
Line 410: Line 416:
[[Category:Signs and symptoms]]
[[Category:Signs and symptoms]]
[[Category:Emergency medicine]]
[[Category:Emergency medicine]]
{{WikiDoc Help Menu}}
{{WikiDoc Sources}}

Latest revision as of 05:01, 15 March 2016

WikiDoc Resources for Bezold-Jarisch reflex

Articles

Most recent articles on Bezold-Jarisch reflex

Most cited articles on Bezold-Jarisch reflex

Review articles on Bezold-Jarisch reflex

Articles on Bezold-Jarisch reflex in N Eng J Med, Lancet, BMJ

Media

Powerpoint slides on Bezold-Jarisch reflex

Images of Bezold-Jarisch reflex

Photos of Bezold-Jarisch reflex

Podcasts & MP3s on Bezold-Jarisch reflex

Videos on Bezold-Jarisch reflex

Evidence Based Medicine

Cochrane Collaboration on Bezold-Jarisch reflex

Bandolier on Bezold-Jarisch reflex

TRIP on Bezold-Jarisch reflex

Clinical Trials

Ongoing Trials on Bezold-Jarisch reflex at Clinical Trials.gov

Trial results on Bezold-Jarisch reflex

Clinical Trials on Bezold-Jarisch reflex at Google

Guidelines / Policies / Govt

US National Guidelines Clearinghouse on Bezold-Jarisch reflex

NICE Guidance on Bezold-Jarisch reflex

NHS PRODIGY Guidance

FDA on Bezold-Jarisch reflex

CDC on Bezold-Jarisch reflex

Books

Books on Bezold-Jarisch reflex

News

Bezold-Jarisch reflex in the news

Be alerted to news on Bezold-Jarisch reflex

News trends on Bezold-Jarisch reflex

Commentary

Blogs on Bezold-Jarisch reflex

Definitions

Definitions of Bezold-Jarisch reflex

Patient Resources / Community

Patient resources on Bezold-Jarisch reflex

Discussion groups on Bezold-Jarisch reflex

Patient Handouts on Bezold-Jarisch reflex

Directions to Hospitals Treating Bezold-Jarisch reflex

Risk calculators and risk factors for Bezold-Jarisch reflex

Healthcare Provider Resources

Symptoms of Bezold-Jarisch reflex

Causes & Risk Factors for Bezold-Jarisch reflex

Diagnostic studies for Bezold-Jarisch reflex

Treatment of Bezold-Jarisch reflex

Continuing Medical Education (CME)

CME Programs on Bezold-Jarisch reflex

International

Bezold-Jarisch reflex en Espanol

Bezold-Jarisch reflex en Francais

Business

Bezold-Jarisch reflex in the Marketplace

Patents on Bezold-Jarisch reflex

Experimental / Informatics

List of terms related to Bezold-Jarisch reflex

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor-In-Chief: Cafer Zorkun, M.D., Ph.D. [2]; Rim Halaby, M.D. [3]; Mugilan Poongkunran M.B.B.S [4]

Synonyms and keywords: Bezold's reflex, Bezold-Jarisch response, Jarisch-Bezold reflex, BJR

Overview

Bezold-Jarisch reflex is the occurrence of bradycardia and hypotension through a pathway involving cardiac receptors, medullary centers and vagal afferent nerves.[1] It results from cardiovascular depressor reflex involving a marked increase in vagal efferent discharge to the heart, elicited by stimulation of mechanoreceptors, primarily in the left ventricle. This leads to bradycardia and dilatation of the peripheral blood vessels with resulting lowering of the blood pressure. [2] [3] [4] Bezold-Jarisch reflex is responsible for 61% of bradyarrhythmia that occur within the first 60 minutes of inferoposterior myocardial infarction.[5] In addition, it is considered a good prognostic indicator of successful early reperfusion and coronary artery patency in the setting of thrombolysis after inferoposterior MI.

Historical Perspective

Bezold-Jarisch reflex is named after Albert von Bezold and Adolf Jarisch.[6][7] The concept of this reflex originated by Bezold in 1867 after injecting experimental animals with intravenous injection of veratrum alkaloids,[1] and was later revised by Jarisch in 1937.[7] It was described as a variety of cardiovascular and neurological processes which cause hypopnea (overly shallow breathing or an abnormally low respiratory rate) and bradycardia (abnormally low resting heart rate).[8]

Physiology

Bezold-Jarisch reflex is the occurrence of bradycardia and hypotension through a pathway involving cardiac receptors, medullary centers and vagal afferent nerves.[1] Bezold-Jarisch reflex originates from inhibitory mechanoreceptors that are located in the left ventricle, particularly in the inferoposterior wall. The stimulation of these receptors occurs in the context of stretching and contraction of a poorly filled ventricle. Once stimulated, these mechanoreceptors stimulate parasympathetic pathways and inhibits the sympathetic pathways. The result of this reflex is a constellation of bradycardia, vasodilation and hypotension in addition to increase renin and vasopressin release.[7]

Below is an image that illustrates the physiology of Bezold-Jarisch reflex.

Physiology of Bezold-Jarisch reflex
Physiology of Bezold-Jarisch reflex

Clinical Implications

Bezold-Jarisch reflex plays a role in the following clinical conditions:

Acute Inferoposterior Myocardial Infarction

  • Bezold-Jarisch reflex is responsible for 61% of bradyarrhythmia that occur within the first 60 minutes of MI,[9] and it explains the occurrence of AV node block in the context of acute posterior or inferior myocardial infarction.[10]
  • It is hypothesized that this reflex is a protective reflex that vasodilates the coronary arteries in the setting of posterior infarction associated with coronary vasospasm.[11] Bradycardia in this setting may be treated with atropine.

Reperfusion

  • Bezold-Jarisch reflex can occur in acute inferior MI after thrombolysis. In fact, it is a prognostic sign for early reperfusion as it occurs in 94% of cases of successful early thrmobolysis in inferior MI.
  • In addition, it is a prognostic factor for coronary patency as it occurs in 89% of patent right coronary artery characterized by a TIMI flow grade of 3.[12]

Vasovagal Syncope

  • Prolonged upright posture results in some degree of pooling of blood in the lower extremities that can lead to diminished intracardiac volume. This phenomenon is exacerbated if the individual is dehydrated. The resultant arterial hypotension is sensed in the carotid sinus baroreceptors, and efferent fibers from these receptors trigger sympathetic autonomic signals that increase cardiac rate and contractility. However, pressure receptors in the wall and trabeculae of the underfilled left ventricle may then sense the stretching and contraction of the poorly filled ventricle, activating high-pressure C-fiber afferent nerves from these receptors. They may respond by activating the parasympathetic system that triggers paradoxical bradycardia and decreased contractility, resulting in additional and relatively sudden arterial hypotension. Hence, Bezold-Jarisch reflex results from the stimulation of vagal afferent pathways in response to sympathetic overactivity.
  • Inappropriate Bezold- Jarisch reflex must be suspected in the setting of unexplained syncope and should be investigated by tilt table test.

Below is an image that illustrates the mechanism of Bezold-Jarisch reflex in syncope.

Mechanism of Bezold-Jarisch reflex in syncope
Mechanism of Bezold-Jarisch reflex in syncope


Medication Effect

Anesthesia

  • The Bezold–Jarisch reflex has also been suggested as a possible cause of profound bradycardia and circulatory collapse after spinal anesthesia.[14]
  • Also, it is one of the complications of interscalene brachial plexus block.

Below is an image that illustrates the distribution of opioid OP4 receptors involved in the regulation of cardiovascular function.

Distribution of opioid OP4 receptors involved in the regulation of cardiovascular function. Various locations of OP4 receptors as suggested by functional studies are shown. Excitatory neurons are represented by solid lines, inhibitory neurons are represented by dotted lines. Abbreviations: CVLM - caudal ventrolateral medulla; NAmb - nucleus ambiguus; NTS - nucleus tractus solitarii; PVN - paraventricular nucleus; RVLM - rostral ventrolateral medulla.[15]
Distribution of opioid OP4 receptors involved in the regulation of cardiovascular function. Various locations of OP4 receptors as suggested by functional studies are shown. Excitatory neurons are represented by solid lines, inhibitory neurons are represented by dotted lines. Abbreviations: CVLM - caudal ventrolateral medulla; NAmb - nucleus ambiguus; NTS - nucleus tractus solitarii; PVN - paraventricular nucleus; RVLM - rostral ventrolateral medulla.[15]


Causes

Life Threatening Causes

Common Causes

Causes by Organ System

Cardiovascular Aortic stenosis, arrhythmias, Bradbury-Eggleston syndrome, carotid sinus hypersensitivity, chronic heart failure, coronary catheterization, coronary reperfusion, digitalis, excessive bleeding, hypertrophic cardiomyopathy, inferior wall myocardial infarction, myocarditis, pericarditis, prinzmetal's angina, radiofrequency catheter ablation, temporary cardiac pacing, vasovagal syncope
Chemical/Poisoning Food poisoning, grayanotoxin-contaminated honey
Dental No underlying causes
Dermatologic Excessive sweating
Drug Side Effect ACE inhibitor, acetophenazine, adriamycin, aliskiren (direct renin inhibitor), alpha blockers, ARB, BNP, calcium channel blocker, cannabinoid, central 3-amino-1,2,4-triazole(ATZ), clonidine, codeine withdrawal, colchicine toxicity, deoxycorticosterone acetate, digitalis, dihydrocapsaicin, disulfiram toxicity, dobutamine, ketanserin, L-S-nitrosocysteine, MAO inhibitors, mibefradil, nandrolone, nitrates, sodium nitroprusside, ondansetron, phenylbiguanide, piperamide analogue, pramipexole, prazosin, prostacyclin(PGI2), serotonin receptor agonist, systemic cholecystokinin, tamsulosin, thiazole derivatives, tricyclic antidepressants, zotepine
Ear Nose Throat Wolfram's disease
Endocrine Acute pancreatitis, addisonian crisis, Addison's disease, congenital adrenal hyperplasia due to 21-hydroxylase deficiency, congenital adrenal hyperplasia due to 3 beta-hydroxysteroid dehydrogenase deficiency, diabetes insipidus, diabetes mellitus type 2, diabetic ketoacidosis, hyperosmolar non-ketotic diabetic coma, multiple endocrine neoplasia, panhypopituitarism, pheochromocytoma, pseudohypoaldosteronism type 1, Waterhouse-Friederichsen syndrome, Wolfram's disease, X-Linked congemital adrenal hyperplasia
Environmental Dihydrocapsaicin, excessive sweating, grayanotoxin-contaminated honey, heat stroke, malnutrition, marijuana, veratridine
Gastroenterologic Acute pancreatitis, diarrhea, dysentery, food poisoning, hyperemesis gravidarum, vomiting
Genetic Congenital adrenal hyperplasia due to 21-hydroxylase deficiency, congenital adrenal hyperplasia due to 3 beta-hydroxysteroid dehydrogenase deficiency, cystinosis, familial dysautonomia, Fanconi syndrome, multiple endocrine neoplasia, pseudohypoaldosteronism type 1, Riley-Day syndrome, Shy-Drager syndrome, Wolfram's disease, X-Linked congenital adrenal hyperplasia
Hematologic No underlying causes
Iatrogenic Coronary catheterization, coronary reperfusion, dialysis, high spinal blockade, interscalene brachial plexus block, pyrexia, radiofrequency catheter ablation, severe dehydration, surgery in prone position, temporary cardiac pacing, vomiting, whole-body acute irradiation
Infectious Disease Dysentery, endotoxins, Guillain-Barre syndrome, HIV/AIDS, pyrexia
Musculoskeletal/Orthopedic No underlying causes
Neurologic Bradbury-Eggleston syndrome, cannabinoid, dementia with Lewy bodies, familial dysautonomia, Guillain-Barre syndrome, panhypopituitarism, paraneoplastic autonomic neuropathy, parkinson's disease, Riley-Day syndrome, Shy-Drager syndrome, vasovagal syncope, veratridine
Nutritional/Metabolic Anorexia nervosa, vitamin B12 deficiency
Obstetric/Gynecologic Hyperemesis gravidarum
Oncologic Paraneoplastic autonomic neuropathy
Ophthalmologic No underlying causes
Overdose/Toxicity Cocaine overdose, colchicine toxicity, disulfiram toxicity, marijuana
Psychiatric Anorexia nervosa
Pulmonary No underlying causes
Renal/Electrolyte Cystinosis, dialysis, Fanconi syndrome, renal failure
Rheumatology/Immunology/Allergy Anaphylaxis
Sexual Congenital adrenal hyperplasia due to 21-hydroxylase deficiency, congenital adrenal hyperplasia due to 3 beta-hydroxysteroid dehydrogenase deficiency
Trauma Excessive bleeding, interscalene brachial plexus block
Urologic No underlying causes
Miscellaneous Aging, excessive dieting, excessive sweating, exercise training, prolonged upright posture, severe dehydration

Causes by Organ System developed by WikiDoc.org, Copyleft 2013

Causes in Alphabetical Order

References

  1. 1.0 1.1 1.2 Aviado DM, Guevara Aviado D (2001). "The Bezold-Jarisch reflex. A historical perspective of cardiopulmonary reflexes". Ann N Y Acad Sci. 940: 48–58. PMID 11458703.
  2. A. von Bezold, Ludwig Hirt (1844-1907): Über die physiologischen Wirkungen des essigsauren Veratrine. Untersuchungen aus dem Physiologischen Laboratorium in Würzburg, 1867, 1: 73-122.
  3. A. Jarisch, C. Henze Über Blutdrucksenkung durch chemische Erregung depressorischer Nerven. Naunyn-Schmiedebergs Archiv für experimentelle Pathologie und Pharmakologie, 1937, 187: 706­-730.
  4. A. Jarisch Vom Herzen ausgehende Kreislaufreflexe. Archiv für Kreislaufforschung 1940, 7: 260-­274.
  5. Goldman, Lee; Anderson, Jeffrey L. "ST SEGMENT ELEVATION ACUTE MYOCARDIAL INFARCTION AND COMPLICATIONS OF MYOCARDIAL INFARCTION". Goldman: Goldman's Cecil Medicine (24th ed.). Saunders, an imprint of Elsevier Inc. p. 444. ISBN 978-1-4377-1604-7.
  6. Template:WhoNamedIt
  7. 7.0 7.1 7.2 7.3 7.4 Mark AL (1983). "The Bezold-Jarisch reflex revisited: clinical implications of inhibitory reflexes originating in the heart". J Am Coll Cardiol. 1 (1): 90–102. PMID 6826948.
  8. Salo LM, Woods RL, Anderson CR, McAllen RM (2007). "Nonuniformity in the von Bezold-Jarisch reflex". Am. J. Physiol. Regul. Integr. Comp. Physiol. 293 (2): R714–20. doi:10.1152/ajpregu.00099.2007. PMID 17567718. Unknown parameter |month= ignored (help)
  9. Goldman, Lee; Anderson, Jeffrey L. "ST SEGMENT ELEVATION ACUTE MYOCARDIAL INFARCTION AND COMPLICATIONS OF MYOCARDIAL INFARCTION". Goldman: Goldman's Cecil Medicine (24th ed.). Saunders, an imprint of Elsevier Inc. p. 444. ISBN 978-1-4377-1604-7.
  10. Katz, Arnold M. (2001). Physiology of the heart (3. ed. ed.). Philadelphia [u.a.]: Lippincott Williams & Wilkins. p. 595. ISBN 0-7817-1548-2.
  11. Linden R.J. Function of Cardiac Receptors. Circulation. 1973; 48: 463-480
  12. Chiladakis JA, Patsouras N, Manolis AS (2003). "The Bezold-Jarisch reflex in acute inferior myocardial infarction: clinical and sympathovagal spectral correlates". Clin Cardiol. 26 (7): 323–8. PMID 12862298.
  13. eMedicine - Syncope : Article by M Silvana Horenstein, MD
  14. Tsai T. & Greengrass R. (2007). Textbook of Regional Anesthesia and Acute Pain Management: Spinal Anesthesia. (A. Hadzic, Ed.). New York: McGraw Hill Medical.
  15. Malinowska B. Godlewski G, Schlicker E. FUNCTION OF NOCICEPTIN AND OPIOID OP4 RECEPTORS IN THE REGULATION OF THE CARDIOVASCULAR SYSTEM, 2002, Bialystok, Poland


Template:WikiDoc Sources CME Category::Cardiology