Difference between revisions of "Endovascular aortic repair"

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{{Infobox surgical procedure
{{Infobox surgical procedure
| anesthesia_type = General vs neuraxial (endovascular abdominal aortic aneurysm repair) vs rarely, local with MAC
| anesthesia_type = General
| airway = ETT vs non-invasive O2
Neuraxial (for abdominal aneurysm)
| lines_access = PIV x 2 with at least 1 large bore (14-16 G), arterial line (right sided preferred)
Local with MAC (rare)
| monitors = Standard ASA monitors, 5-lead EKG, arterial line, TEE (endovascular thoracic aortic aneurysm repair)
| airway = ETT if general
| considerations_preoperative =  
| lines_access = PIV x 2 (at least 1 large bore (14-16 G)
| considerations_intraoperative =  
Arterial line (right sided preferred)
| considerations_postoperative =  
| monitors = Standard ASA monitors
5-lead EKG
Arterial line
TEE (for thoracic aneurysm)
| considerations_preoperative = Assess co-existing cardiovascular comorbidities
| considerations_intraoperative = Heparin for anticoagulation
Consider decrease BP immediately prior to stent  deployment and/or increase BP post-deployment
| considerations_postoperative = Monitor for spinal/intraabdominal ischemia due to graft occlusion
}}
}}


Endovascular stent grafting of aortic aneurysm is a surgical procedure by which a stent graft is deployed along the extent of the aortic lesion through vascular access commonly via the common femoral vessels. The stent graft protects the aneurysmal wall from high blood pressure in the aorta decreasing the risk of rupture. This procedure is indicated when aneurysm size is larger than 5.5 cm or if the growth rate of the aneurysm is 10 mm or more per year due to the increased risk of rupture<ref>{{Cite book|url=https://www.worldcat.org/oclc/1280374077|title=Stoelting's anesthesia and co-existing disease|date=2022|others=Roberta L. Hines, Stephanie B. Jones, Robert K. Stoelting|isbn=978-0-323-71861-5|edition=Eighth edition|location=Philadelphia, PA|oclc=1280374077}}</ref><ref name=":0">{{Cite journal|last=Cheruku|first=Sreekanth|last2=Huang|first2=Norman|last3=Meinhardt|first3=Kyle|last4=Aguirre|first4=Marco|date=2019-12|title=Anesthetic Management for Endovascular Repair of the Thoracic Aorta|url=https://pubmed.ncbi.nlm.nih.gov/31677680|journal=Anesthesiology Clinics|volume=37|issue=4|pages=593–607|doi=10.1016/j.anclin.2019.07.001|issn=1932-2275|pmid=31677680}}</ref>. Endovascular stent grafting of aortic aneurysm involves obtaining vascular access to allow introduction of stent deployment apparatus. Prior to introduction of stent deployment apparatus, systemic heparinization is provided. Fluoroscopy is performed with IV contrast to evaluate vascular anatomy and guide stent graft deployment apparatus placement.  Once the stent graft is deployed and fluoroscopy/TEE confirmed optimal placement without the presence of endoleak or aortic dissection, stent graft introducer is removed and vascular access sites are closed to obtain hemostasis <ref name=":0" />.
'''Endovascular aortic repair''' is a surgical procedure by which a stent graft is deployed along the extent of an aortic lesion through vascular access, typically via the common femoral vessels. The stent graft protects the aneurysmal wall from high blood pressure in the aorta decreasing the risk of rupture.


==Preoperative management==
Aortic repair is indicated when an aneurysm is at high risk of rupture, which is defined as<ref>{{Cite book|url=https://www.worldcat.org/oclc/1280374077|title=Stoelting's anesthesia and co-existing disease|date=2022|others=Roberta L. Hines, Stephanie B. Jones, Robert K. Stoelting|isbn=978-0-323-71861-5|edition=Eighth edition|location=Philadelphia, PA|oclc=1280374077}}</ref><ref name=":0">{{Cite journal|last=Cheruku|first=Sreekanth|last2=Huang|first2=Norman|last3=Meinhardt|first3=Kyle|last4=Aguirre|first4=Marco|date=2019-12|title=Anesthetic Management for Endovascular Repair of the Thoracic Aorta|url=https://pubmed.ncbi.nlm.nih.gov/31677680|journal=Anesthesiology Clinics|volume=37|issue=4|pages=593–607|doi=10.1016/j.anclin.2019.07.001|issn=1932-2275|pmid=31677680}}</ref>:


===Patient evaluation<!-- Describe the unique and important aspects of preoperative evaluation. Add or remove rows from the systems table as needed. -->===
*Size larger than 5.5 cm
*Growth of 10 mm or more per year
 
The procedure involves obtaining vascular access to allow the introduction of the stent deployment apparatus. Prior to the introduction of stent deployment apparatus, systemic heparinization is provided. Fluoroscopy is performed with IV contrast to evaluate vascular anatomy and guide stent placement. Once the stent graft is deployed and placement confirmed with fluoroscopy/TEE without the presence of endoleak or aortic dissection, the stent graft introducer is removed and vascular access sites are closed<ref name=":0" />.
 
== Preoperative management==
 
===Patient evaluation<!-- Describe the unique and important aspects of preoperative evaluation. Add or remove rows from the systems table as needed. --> ===
{| class="wikitable"
{| class="wikitable"
|+
|+
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|-
|-
|Neurologic
|Neurologic
|Assess for presence of history cerebrovascular disease or carotid stenosis by obtaining baseline neurologic exam especially strength of lower extremities and auscultation
|Assess for presence of history cerebrovascular disease or carotid stenosis by obtaining baseline neurologic exam, especially strength of lower extremities and auscultation.
|-
|-
|Cardiovascular
|Cardiovascular
|Assess for presence of myocardial ischemia, previous myocardial infarction, valvular dysfunction, heart failure and peripheral arterial disease. Obtaining baseline EKG and functional status assessment are mandatory. Review diagnostic transthoracic echocardiography (TTE) as most patients have completed as part of their workup. Exercise or pharmacologic stress testing or radionuclide imaging may be warranted in this patient population if there are any abnormal findings.
|Assess baseline functional status and evaluate for myocardial ischemia, previous myocardial infarction, valvular dysfunction, heart failure and peripheral arterial disease.
|-
|-
|Respiratory
|Respiratory
|Assess for COPD, cigarette smoking, and reversible pulmonary pathology
|Assess for COPD, cigarette smoking, and reversible pulmonary pathology.


Smoking cessation of at least 8 weeks  
Smoking cessation of at least 8 weeks is optimal.
|-
|Gastrointestinal
|
|-
|Hematologic
|
|-
|-
|Renal
|Renal
|Preoperative hydration and avoidance of nephrotoxic drugs during the perioperative period are important to reduce the risk of kidney injury due to IV contrast used during the procedure.
|Preoperative hydration and avoidance of nephrotoxic drugs during the perioperative period are important to reduce the risk of kidney injury due to IV contrast used during the procedure.
|-
|Endocrine
|
|-
|Other
|
|}
|}


===Labs and studies<!-- Describe any important labs or studies. Include reasoning to justify the study and/or interpretation of results in the context of this procedure. If none, this section may be removed. -->===
===Labs and studies<!-- Describe any important labs or studies. Include reasoning to justify the study and/or interpretation of results in the context of this procedure. If none, this section may be removed. -->===


*Type and screen in the occasion that transfusion is needed
*Type and screen
*Contrast-enhanced spiral CT scans of the thorax and thoracic aortography to assess the dimensions of the aneurysms
*Contrast-enhanced spiral CT scans of the thorax and thoracic aortography to assess the dimensions of the aneurysms
**This allows for the assessment of adequate proximal and distal neck for surgical planning. The CT scan also helps assess the adequacy of the vessel used for vascular access for the stent introducer system
**This allows for the assessment of adequate proximal and distal neck for surgical planning. The CT scan also helps assess the adequacy of the vessel used for vascular access for the stent introducer system
*EKG to assess for any myocardial ischemia or previous infarction
* EKG to assess for any myocardial ischemia or previous infarction
*TTE to assess valvular disease, size and extent of aneurysm, and LV function
*TTE to assess valvular disease, size and extent of aneurysm, and LV function
* Exercise or pharmacologic stress testing or radionuclide imaging may be warranted


===Operating room setup<!-- Describe any unique aspects of operating room preparation. Avoid excessively granular information. Use drug classes instead of specific drugs when appropriate. If none, this section may be removed. -->===
=== Operating room setup<!-- Describe any unique aspects of operating room preparation. Avoid excessively granular information. Use drug classes instead of specific drugs when appropriate. If none, this section may be removed. -->===


===Patient preparation and premedication<!-- Describe any unique considerations for patient preparation and premedication. If none, this section may be removed. -->===
===Patient preparation and premedication<!-- Describe any unique considerations for patient preparation and premedication. If none, this section may be removed. -->===
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Spinal and/or epidural may be considered for endovascular abdominal aortic aneurysm repair <ref name=":1">{{Cite book|url=https://www.worldcat.org/oclc/1117874404|title=Anesthesiologist's manual of surgical procedures|date=2020|others=Richard A. Jaffe, Clifford A. Schmiesing, Brenda Golianu|isbn=978-1-4698-2916-6|edition=Sixth edition|location=Philadelphia|oclc=1117874404}}</ref>
Spinal and/or epidural may be considered for endovascular abdominal aortic aneurysm repair <ref name=":1">{{Cite book|url=https://www.worldcat.org/oclc/1117874404|title=Anesthesiologist's manual of surgical procedures|date=2020|others=Richard A. Jaffe, Clifford A. Schmiesing, Brenda Golianu|isbn=978-1-4698-2916-6|edition=Sixth edition|location=Philadelphia|oclc=1117874404}}</ref>


==Intraoperative management==
== Intraoperative management==


===Monitoring and access<!-- List and/or describe monitors and access typically needed for this case. Please describe rationale for any special monitors or access. -->===
===Monitoring and access<!-- List and/or describe monitors and access typically needed for this case. Please describe rationale for any special monitors or access. -->===
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*Standard ASA monitors
*Standard ASA monitors
*5-lead EKG
*5-lead EKG
*Arterial line is required as it allows prompt vasopressor titration in response to blood pressure change, particularly just prior to stent deployment and post stent deployment  
* Arterial line is required as it allows prompt vasopressor titration in response to blood pressure change, particularly just prior to stent deployment and post stent deployment  
**Right sided preference as left sided vascular access from the surgical team may be needed allowing for an easier approach to the aorta compared to right sided approach. Also, the stent graft may block the L subclavian artery leading to false reading <ref name=":1" />
**Right sided preference as left sided vascular access from the surgical team may be needed allowing for an easier approach to the aorta compared to right sided approach. Also, the stent graft may block the L subclavian artery leading to false reading <ref name=":1" />
*TEE used to assist in the identification of aneurysm necks, monitor the deployment of the stent graft, endoleaks status post deployment, and aortic dissection (Endovascular Thoracic Aneurysm Repair)
*TEE used to assist in the identification of aneurysm necks, monitor the deployment of the stent graft, endoleaks status post deployment, and aortic dissection (Endovascular Thoracic Aneurysm Repair)
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*Spinal drain monitoring if placed for high risk patient undergoing endovascular thoracic aneurysm stent grafting
*Spinal drain monitoring if placed for high risk patient undergoing endovascular thoracic aneurysm stent grafting
*Somatosensory evoked potentials (SSEPs) and motor evoked potentials (MEPs) may be used to assess for spinal ischemia for patient undergoing endovascular thoracic stent grafting<ref name=":0" />
*Somatosensory evoked potentials (SSEPs) and motor evoked potentials (MEPs) may be used to assess for spinal ischemia for patient undergoing endovascular thoracic stent grafting<ref name=":0" />
*At Least 1 large bore IV (14-16G) in the situation of bleeding from vascular injury or rupture
*At Least 1 large bore IV (14-16G) given risk of vascular injury or rupture


===Induction and airway management<!-- Describe the important considerations and general approach to the induction of anesthesia and how the airway is typically managed for this case. -->===
===Induction and airway management<!-- Describe the important considerations and general approach to the induction of anesthesia and how the airway is typically managed for this case. -->===


*Most common anesthesia type is general anesthesia
*Most common anesthesia type is general anesthesia
**Standard induction with propofol or etomidate, short acting opioid to blunt sympathetic response, neuromuscular blockade for endotracheal intubation
**May need to reverse neuromuscular blockade if neuromonitoring is used
*If regional anesthesia is chosen, minimal to deep sedation with midazolam, fentanyl, propofol or dexmedetomidine is reasonable.
*If neuraxial anesthesia is chosen, supplement with minimal to deep sedation as needed
*Rarely, local anesthetic placement by the surgical team with monitored anesthesia care is implemented depending on patient cooperativity. Minimal to deep sedation is reasonable
*Rarely, local anesthetic placement by the surgical team with monitored anesthesia care is used, depending on patient cooperativity.


===Positioning<!-- Describe any unique positioning considerations, including potential intraoperative position changes. If none, this section may be removed. -->===
===Positioning<!-- Describe any unique positioning considerations, including potential intraoperative position changes. If none, this section may be removed. -->===
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*Volatile anesthetics supplemented with opioids for analgesia if neuromonitoring is not used
*Volatile anesthetics supplemented with opioids for analgesia if neuromonitoring is not used
*If neuromonitoring is used, 0.5 MAC of volatile anesthetic supplemented by IV anesthetic/opioids or TIVA and avoiding neuromuscular blockade after intubating dose
*If neuromonitoring is used, 0.5 MAC of volatile anesthetic supplemented by IV anesthetic/opioids or TIVA and avoiding neuromuscular blockade after intubating dose
*Administration of heparin
*Administration of heparin prior to introducer insertion


*Verification of activated clotting time (ACT) throughout the case with goal of 200 seconds until introducer is removed <ref name=":0" />
*Verification of activated clotting time (ACT) throughout the case with goal of 200 seconds until introducer is removed <ref name=":0" />
*Maintenance of baseline MAP as this patient population have increase risk of CVA, MI, aortic dissection, and paraplegia
* Maintenance of baseline MAP as this patient population have increase risk of CVA, MI, aortic dissection, and paraplegia
*Just prior to stent deployment, BP must be decrease to reduce the risk of graft migration during deployment with vasodilators
*Just prior to stent deployment, BP must be decrease to reduce the risk of graft migration during deployment with vasodilators
*Post stent graft deployment, BP is increased to ensure perfusion especially if there is a risk of spinal ischemia with vasopressors
*Post stent graft deployment, BP is increased to ensure perfusion especially if there is a risk of spinal ischemia with vasopressors
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*Reversal of neuromuscular blockade if used
*Reversal of neuromuscular blockade if used
*Assessment of hip flexion if spinal cord is at risk for ischemia
*Assessment of hip flexion if spinal cord is at risk for ischemia
*Reversal of heparin with protamine with confirmation of ACT returning to normal value
* Reversal of heparin with protamine with confirmation of ACT returning to normal value


==Postoperative management==
==Postoperative management==
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===Disposition<!-- List and/or describe the postoperative disposition and any special considerations for transport of patients for this case. -->===
===Disposition<!-- List and/or describe the postoperative disposition and any special considerations for transport of patients for this case. -->===


*PACU
*PACU then floor
*Floor
* Consider ICU if intraoperative complications occur
*If any complications requiring ICU, then ICU


===Pain management<!-- Describe the expected level of postoperative pain and approaches to pain management for this case. -->===
===Pain management<!-- Describe the expected level of postoperative pain and approaches to pain management for this case. -->===
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*Vascular injury
*Vascular injury
*Graft migration
*Graft migration
*Stent frame fractures
* Stent frame fractures
*Breakdown of graft material
*Breakdown of graft material
*Spinal cord ischemia or infarction secondary to occlusion of intercostal arteries
*Spinal cord ischemia or infarction secondary to occlusion of intercostal arteries
*Intra-abdominal ischemia secondary to occlusion of vessels supplying the gastro-intestinal organ including the celiac artery, superior mesenteric artery, inferior mesenteric artery, and renal arteries
* Intraabdominal ischemia secondary to occlusion of vessels supplying the gastro-intestinal organ including the celiac artery, superior mesenteric artery, inferior mesenteric artery, and renal arteries


*Bleeding from groin site or retroperitoneal bleeding
*Bleeding from groin site or retroperitoneal bleeding
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|-
|-
|Unique considerations
|Unique considerations
|Use of TEE and possible neuro-monitoring and lumbar drain
|Use of TEE and possible neuromonitoring and lumbar drain
|
|Neuraxial anesthesia possible
|-
|-
|Position
|Position
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|-
|-
|Pain management
|Pain management
|Multimodal  
| Multimodal
|Multimodal
|Multimodal
|-
|-
|Potential complications
|Potential complications
|Paraplegia
|Paraplegia
|Intra-abdominal ischemia/infarction
|Intraabdominal ischemia/infarction
|}
|}


Revision as of 21:48, 17 January 2022

Endovascular aortic repair
Anesthesia type

General Neuraxial (for abdominal aneurysm) Local with MAC (rare)

Airway

ETT if general

Lines and access

PIV x 2 (at least 1 large bore (14-16 G) Arterial line (right sided preferred)

Monitors

Standard ASA monitors 5-lead EKG Arterial line TEE (for thoracic aneurysm)

Primary anesthetic considerations
Preoperative

Assess co-existing cardiovascular comorbidities

Intraoperative

Heparin for anticoagulation Consider decrease BP immediately prior to stent deployment and/or increase BP post-deployment

Postoperative

Monitor for spinal/intraabdominal ischemia due to graft occlusion

Article quality
Editor rating
In development
User likes
0

Endovascular aortic repair is a surgical procedure by which a stent graft is deployed along the extent of an aortic lesion through vascular access, typically via the common femoral vessels. The stent graft protects the aneurysmal wall from high blood pressure in the aorta decreasing the risk of rupture.

Aortic repair is indicated when an aneurysm is at high risk of rupture, which is defined as[1][2]:

  • Size larger than 5.5 cm
  • Growth of 10 mm or more per year

The procedure involves obtaining vascular access to allow the introduction of the stent deployment apparatus. Prior to the introduction of stent deployment apparatus, systemic heparinization is provided. Fluoroscopy is performed with IV contrast to evaluate vascular anatomy and guide stent placement. Once the stent graft is deployed and placement confirmed with fluoroscopy/TEE without the presence of endoleak or aortic dissection, the stent graft introducer is removed and vascular access sites are closed[2].

Preoperative management

Patient evaluation

System Considerations
Neurologic Assess for presence of history cerebrovascular disease or carotid stenosis by obtaining baseline neurologic exam, especially strength of lower extremities and auscultation.
Cardiovascular Assess baseline functional status and evaluate for myocardial ischemia, previous myocardial infarction, valvular dysfunction, heart failure and peripheral arterial disease.
Respiratory Assess for COPD, cigarette smoking, and reversible pulmonary pathology.

Smoking cessation of at least 8 weeks is optimal.

Renal Preoperative hydration and avoidance of nephrotoxic drugs during the perioperative period are important to reduce the risk of kidney injury due to IV contrast used during the procedure.

Labs and studies

  • Type and screen
  • Contrast-enhanced spiral CT scans of the thorax and thoracic aortography to assess the dimensions of the aneurysms
    • This allows for the assessment of adequate proximal and distal neck for surgical planning. The CT scan also helps assess the adequacy of the vessel used for vascular access for the stent introducer system
  • EKG to assess for any myocardial ischemia or previous infarction
  • TTE to assess valvular disease, size and extent of aneurysm, and LV function
  • Exercise or pharmacologic stress testing or radionuclide imaging may be warranted

Operating room setup

Patient preparation and premedication

  • IV midazolam for anxiety
  • PO acetaminophen for pain control

Regional and neuraxial techniques

Spinal and/or epidural may be considered for endovascular abdominal aortic aneurysm repair [3]

Intraoperative management

Monitoring and access

  • Standard ASA monitors
  • 5-lead EKG
  • Arterial line is required as it allows prompt vasopressor titration in response to blood pressure change, particularly just prior to stent deployment and post stent deployment
    • Right sided preference as left sided vascular access from the surgical team may be needed allowing for an easier approach to the aorta compared to right sided approach. Also, the stent graft may block the L subclavian artery leading to false reading [3]
  • TEE used to assist in the identification of aneurysm necks, monitor the deployment of the stent graft, endoleaks status post deployment, and aortic dissection (Endovascular Thoracic Aneurysm Repair)
  • Urine output monitoring in the setting of possible renal vessel occlusion from deployment of stent graft and contrast induced nephropathy
  • Spinal drain monitoring if placed for high risk patient undergoing endovascular thoracic aneurysm stent grafting
  • Somatosensory evoked potentials (SSEPs) and motor evoked potentials (MEPs) may be used to assess for spinal ischemia for patient undergoing endovascular thoracic stent grafting[2]
  • At Least 1 large bore IV (14-16G) given risk of vascular injury or rupture

Induction and airway management

  • Most common anesthesia type is general anesthesia
    • May need to reverse neuromuscular blockade if neuromonitoring is used
  • If neuraxial anesthesia is chosen, supplement with minimal to deep sedation as needed
  • Rarely, local anesthetic placement by the surgical team with monitored anesthesia care is used, depending on patient cooperativity.

Positioning

  • Supine +/- slight right lateral decubitus (endovascular thoracic aortic aneurysm repair)

Maintenance and surgical considerations

  • Volatile anesthetics supplemented with opioids for analgesia if neuromonitoring is not used
  • If neuromonitoring is used, 0.5 MAC of volatile anesthetic supplemented by IV anesthetic/opioids or TIVA and avoiding neuromuscular blockade after intubating dose
  • Administration of heparin prior to introducer insertion
  • Verification of activated clotting time (ACT) throughout the case with goal of 200 seconds until introducer is removed [2]
  • Maintenance of baseline MAP as this patient population have increase risk of CVA, MI, aortic dissection, and paraplegia
  • Just prior to stent deployment, BP must be decrease to reduce the risk of graft migration during deployment with vasodilators
  • Post stent graft deployment, BP is increased to ensure perfusion especially if there is a risk of spinal ischemia with vasopressors

Emergence

  • PONV prophylaxis
  • Reversal of neuromuscular blockade if used
  • Assessment of hip flexion if spinal cord is at risk for ischemia
  • Reversal of heparin with protamine with confirmation of ACT returning to normal value

Postoperative management

Disposition

  • PACU then floor
  • Consider ICU if intraoperative complications occur

Pain management

  • Postoperative pain is usually mild
  • Multimodal pain management
    • PO/IV acetaminophen
    • PO/IV opioid
    • Local anesthetic at vascular access sites
    • Epidural analgesia if chosen as anesthetic technique
    • Usually avoiding NSAID due to pre-existing renal disease or potential renal injury

Potential complications

  • Endoleaks
  • Vascular injury
  • Graft migration
  • Stent frame fractures
  • Breakdown of graft material
  • Spinal cord ischemia or infarction secondary to occlusion of intercostal arteries
  • Intraabdominal ischemia secondary to occlusion of vessels supplying the gastro-intestinal organ including the celiac artery, superior mesenteric artery, inferior mesenteric artery, and renal arteries
  • Bleeding from groin site or retroperitoneal bleeding
  • Contrast induced nephropathy

Procedure variants

Thoracic Aortic Aneurysms Abdominal Aortic Aneurysms
Unique considerations Use of TEE and possible neuromonitoring and lumbar drain Neuraxial anesthesia possible
Position Supine +/- slight right lateral decubitus Supine
Surgical time 1-3 hours 1-3 hours
EBL Minimal, unless vascular injury Minimal, unless vascular injury
Postoperative disposition Usually PACU to the floor, possible ICU Usually PACU to the floor
Pain management Multimodal Multimodal
Potential complications Paraplegia Intraabdominal ischemia/infarction

References

  1. ↑ Stoelting's anesthesia and co-existing disease. Roberta L. Hines, Stephanie B. Jones, Robert K. Stoelting (Eighth edition ed.). Philadelphia, PA. 2022. ISBN 978-0-323-71861-5. OCLC 1280374077. |edition= has extra text (help)CS1 maint: others (link)
  2. ↑ 2.0 2.1 2.2 2.3 Cheruku, Sreekanth; Huang, Norman; Meinhardt, Kyle; Aguirre, Marco (2019-12). "Anesthetic Management for Endovascular Repair of the Thoracic Aorta". Anesthesiology Clinics. 37 (4): 593–607. doi:10.1016/j.anclin.2019.07.001. ISSN 1932-2275. PMID 31677680. Check date values in: |date= (help)
  3. ↑ 3.0 3.1 Anesthesiologist's manual of surgical procedures. Richard A. Jaffe, Clifford A. Schmiesing, Brenda Golianu (Sixth edition ed.). Philadelphia. 2020. ISBN 978-1-4698-2916-6. OCLC 1117874404. |edition= has extra text (help)CS1 maint: others (link)

Top contributors: Cornel Chiu and Chris Rishel

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