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			{{SI}}
			{{Infobox medical condition
			\| name = Posterior circulation infarct
			\| image = [[File:Circle_of_Willis_en.svg\|250px]]
			\| caption = Diagram of the [[Circle of Willis]], showing the [[posterior circulation]]
			\| field = [[Neurology]]
			\| synonyms = Vertebrobasilar stroke
			\| symptoms = [[Dizziness]], [[vertigo]], [[diplopia]], [[dysarthria]], [[ataxia]], [[nausea]], [[vomiting]], [[headache]], [[visual disturbances]]
			\| complications = [[Cerebellar swelling]], [[brainstem compression]], [[hydrocephalus]]
			\| onset = Sudden
			\| duration = Variable
			\| causes = [[Atherosclerosis]], [[embolism]], [[vertebral artery dissection]]
			\| risks = [[Hypertension]], [[diabetes mellitus]], [[smoking]], [[hyperlipidemia]], [[atrial fibrillation]]
			\| diagnosis = [[Magnetic resonance imaging\|MRI]], [[computed tomography\|CT scan]], [[angiography]]
			\| differential = [[Migraine]], [[seizure]], [[multiple sclerosis]], [[labyrinthitis]]
			\| treatment = [[Thrombolysis]], [[antiplatelet therapy]], [[anticoagulation]], [[rehabilitation]]
			\| prognosis = Variable, depends on severity and treatment
			\| frequency = 20% of all [[ischemic stroke]]s
			\| deaths = Can be fatal if untreated
			}}
	'''Posterior Circulation Infarct''' (PCI) refers to a type of [[ischemic stroke]] that occurs in the posterior circulation of the brain, which supplies blood to the brainstem, cerebellum, and occipital lobes. This condition is significant due to the critical functions of these brain regions, including coordination, balance, vision, and consciousness. Understanding the causes, symptoms, diagnosis, and treatment of PCI is crucial for managing its impacts effectively.		'''Posterior Circulation Infarct''' (PCI) refers to a type of [[ischemic stroke]] that occurs in the posterior circulation of the brain, which supplies blood to the brainstem, cerebellum, and occipital lobes. This condition is significant due to the critical functions of these brain regions, including coordination, balance, vision, and consciousness. Understanding the causes, symptoms, diagnosis, and treatment of PCI is crucial for managing its impacts effectively.

	==Causes==		==Causes==
	Posterior Circulation Infarct is primarily caused by the blockage or narrowing of the arteries that supply blood to the posterior part of the brain. The main arteries involved include the [[vertebral arteries]], [[basilar artery]], and [[posterior cerebral arteries]]. The blockage may result from various conditions, including:		Posterior Circulation Infarct is primarily caused by the blockage or narrowing of the arteries that supply blood to the posterior part of the brain. The main arteries involved include the [[vertebral arteries]], [[basilar artery]], and [[posterior cerebral arteries]]. The blockage may result from various conditions, including:

	* [[Atherosclerosis]], where the arteries become clogged with fatty deposits.		* [[Atherosclerosis]], where the arteries become clogged with fatty deposits.
	* [[Embolism]], where blood clots from other parts of the body travel to the brain.		* [[Embolism]], where blood clots from other parts of the body travel to the brain.
	* [[Arterial dissection]], which is a tear in the artery wall.		* [[Arterial dissection]], which is a tear in the artery wall.
	* [[Hypercoagulability]], an increased tendency for blood clotting.		* [[Hypercoagulability]], an increased tendency for blood clotting.

	==Symptoms==		==Symptoms==
	The symptoms of a Posterior Circulation Infarct can vary widely depending on the specific brain areas affected but may include:		The symptoms of a Posterior Circulation Infarct can vary widely depending on the specific brain areas affected but may include:

	* [[Vertigo]] and dizziness		* [[Vertigo]] and dizziness
	* [[Ataxia]], or lack of muscle coordination		* [[Ataxia]], or lack of muscle coordination
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	* [[Headache]]		* [[Headache]]
	* [[Confusion]] and changes in consciousness		* [[Confusion]] and changes in consciousness

	==Diagnosis==		==Diagnosis==
	Diagnosing PCI involves a combination of clinical assessment and imaging studies. Key diagnostic tools include:		Diagnosing PCI involves a combination of clinical assessment and imaging studies. Key diagnostic tools include:

	* [[Magnetic Resonance Imaging]] (MRI), which can provide detailed images of the brain's structure and identify areas of infarction.		* [[Magnetic Resonance Imaging]] (MRI), which can provide detailed images of the brain's structure and identify areas of infarction.
	* [[Computed Tomography]] (CT) scans, which can quickly identify hemorrhages but may not initially show ischemic strokes.		* [[Computed Tomography]] (CT) scans, which can quickly identify hemorrhages but may not initially show ischemic strokes.
	* [[Magnetic Resonance Angiography]] (MRA) or [[CT Angiography]] (CTA), which are used to visualize the blood vessels and detect blockages or other abnormalities.		* [[Magnetic Resonance Angiography]] (MRA) or [[CT Angiography]] (CTA), which are used to visualize the blood vessels and detect blockages or other abnormalities.

	==Treatment==		==Treatment==
	Treatment for Posterior Circulation Infarct aims to restore blood flow to the affected area of the brain and prevent further strokes. Treatment options include:		Treatment for Posterior Circulation Infarct aims to restore blood flow to the affected area of the brain and prevent further strokes. Treatment options include:

	* [[Thrombolysis]], the administration of clot-busting drugs, which is most effective if administered within a few hours of stroke onset.		* [[Thrombolysis]], the administration of clot-busting drugs, which is most effective if administered within a few hours of stroke onset.
	* [[Anticoagulant therapy]], to prevent new clots from forming.		* [[Anticoagulant therapy]], to prevent new clots from forming.
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	* In some cases, surgical interventions such as [[angioplasty]] and [[stenting]] may be necessary to open blocked arteries.		* In some cases, surgical interventions such as [[angioplasty]] and [[stenting]] may be necessary to open blocked arteries.
	* Rehabilitation therapies, including physical therapy, occupational therapy, and speech therapy, are crucial for recovering lost functions.		* Rehabilitation therapies, including physical therapy, occupational therapy, and speech therapy, are crucial for recovering lost functions.

	==Prevention==		==Prevention==
	Preventing a Posterior Circulation Infarct involves managing the risk factors for stroke. This includes:		Preventing a Posterior Circulation Infarct involves managing the risk factors for stroke. This includes:

	* Controlling [[hypertension]] (high blood pressure)		* Controlling [[hypertension]] (high blood pressure)
	* Managing [[diabetes]]		* Managing [[diabetes]]
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	* Maintaining a healthy weight		* Maintaining a healthy weight
	* Regular physical activity		* Regular physical activity

	==See Also==		==See Also==
	* [[Ischemic stroke]]		* [[Ischemic stroke]]
	* [[Cerebrovascular accident]]		* [[Cerebrovascular accident]]
	* [[Stroke prevention]]		* [[Stroke prevention]]

	[[Category:Stroke]]		[[Category:Stroke]]
	[[Category:Neurology]]		[[Category:Neurology]]
	{{medicine-stub}}		{{medicine-stub}}

	~~== Posterior circulation infarct ==~~
	~~<gallery>~~
	~~File:Circle_of_Willis_en.svg~~
	~~</gallery>~~

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	[[Category:Neurology]]		[[Category:Neurology]]
	{{medicine-stub}}		{{medicine-stub}}

			== Posterior circulation infarct ==
			<gallery>
			File:Circle_of_Willis_en.svg
			</gallery>

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'''Posterior Circulation Infarct''' (PCI) refers to a type of [[ischemic stroke]] that occurs in the posterior circulation of the brain, which supplies blood to the brainstem, cerebellum, and occipital lobes. This condition is significant due to the critical functions of these brain regions, including coordination, balance, vision, and consciousness. Understanding the causes, symptoms, diagnosis, and treatment of PCI is crucial for managing its impacts effectively.

==Causes==
Posterior Circulation Infarct is primarily caused by the blockage or narrowing of the arteries that supply blood to the posterior part of the brain. The main arteries involved include the [[vertebral arteries]], [[basilar artery]], and [[posterior cerebral arteries]]. The blockage may result from various conditions, including:

* [[Atherosclerosis]], where the arteries become clogged with fatty deposits.
* [[Embolism]], where blood clots from other parts of the body travel to the brain.
* [[Arterial dissection]], which is a tear in the artery wall.
* [[Hypercoagulability]], an increased tendency for blood clotting.

==Symptoms==
The symptoms of a Posterior Circulation Infarct can vary widely depending on the specific brain areas affected but may include:

* [[Vertigo]] and dizziness
* [[Ataxia]], or lack of muscle coordination
* [[Visual disturbances]], including blindness in one half of the visual field ([[hemianopia]])
* [[Weakness]] or numbness on one side of the body
* [[Dysphagia]], or difficulty swallowing
* [[Dysarthria]], difficulty speaking
* [[Headache]]
* [[Confusion]] and changes in consciousness

==Diagnosis==
Diagnosing PCI involves a combination of clinical assessment and imaging studies. Key diagnostic tools include:

* [[Magnetic Resonance Imaging]] (MRI), which can provide detailed images of the brain's structure and identify areas of infarction.
* [[Computed Tomography]] (CT) scans, which can quickly identify hemorrhages but may not initially show ischemic strokes.
* [[Magnetic Resonance Angiography]] (MRA) or [[CT Angiography]] (CTA), which are used to visualize the blood vessels and detect blockages or other abnormalities.

==Treatment==
Treatment for Posterior Circulation Infarct aims to restore blood flow to the affected area of the brain and prevent further strokes. Treatment options include:

* [[Thrombolysis]], the administration of clot-busting drugs, which is most effective if administered within a few hours of stroke onset.
* [[Anticoagulant therapy]], to prevent new clots from forming.
* [[Antiplatelet therapy]], to prevent clotting.
* In some cases, surgical interventions such as [[angioplasty]] and [[stenting]] may be necessary to open blocked arteries.
* Rehabilitation therapies, including physical therapy, occupational therapy, and speech therapy, are crucial for recovering lost functions.

==Prevention==
Preventing a Posterior Circulation Infarct involves managing the risk factors for stroke. This includes:

* Controlling [[hypertension]] (high blood pressure)
* Managing [[diabetes]]
* Reducing [[cholesterol]] levels
* Quitting smoking
* Maintaining a healthy weight
* Regular physical activity

==See Also==
* [[Ischemic stroke]]
* [[Cerebrovascular accident]]
* [[Stroke prevention]]

[[Category:Stroke]]
[[Category:Neurology]]
{{medicine-stub}}

Posterior circulation infarct - Revision history

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