scholarly journals Spurious electroencephalographic activity due to pulsation artifact in the depth of anesthesia monitor

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Kotoe Kamata ◽  
Tarmo Lipping ◽  
Arvi Yli-Hankala ◽  
Ville Jäntti ◽  
Masanori Yamauchi

Abstract Background The depth of anesthesia (DOA) is estimated based on the anesthesia-induced electroencephalogram (EEG) changes. However, the surgical environment, as well as the patient him/herself, generates electrical interferences that cause EEG waveform distortion. Case presentation A 52-year-old patient required general anesthesia due to the right femur necrotizing fasciitis. He had no history of epilepsy or head injury. His cardiovascular status was stable without arrhythmia under propofol and remifentanil anesthesia. The DOA was evaluated with Root® with SedLine® Brain Function Monitoring (Masimo Inc, Irvine, CA). The EEG showed a rhythmic, heart rate time-locked pulsation artifact, which diminished after electrode repositioning. Offline analysis revealed that the pulse wave-like interference in EEG was observed at the heart rate frequency. Conclusions We experienced an anesthesia case that involves a pulsation artifact generated by the superficial temporal artery contaminating the EEG signal. Numerous clinical conditions, including pulsation artifact, disturb anesthesia EEG.

Author(s):  
Ádám Csavajda ◽  
Olivier F Bertrand ◽  
Béla Merkely ◽  
Zoltán Ruzsa

Abstract Background The COVID-19 pandemic creates new challenges for healthcare, including invasive cardiology. Case summary We discuss the case of a 65-year-old man who presented with non-ST segment elevation myocardial infarction combined with bilateral pneumonia. The patient had known severe iliac artery lesions with prior interventions and bilateral subclavian artery occlusions. After unsuccessful femoral artery access, the diagnostic angiography and the right coronary artery percutaneous coronary intervention were successfully performed from ultrasound-guided lower superficial temporal artery access. Discussion We showed that superficial temporal access can be used as an alternate access site for diagnostic coronary angiography and intervention when standard wrist and femoral access sites are not readily accessible.


Neurosurgery ◽  
1983 ◽  
Vol 12 (3) ◽  
pp. 342-345 ◽  
Author(s):  
Frances K. Conley

Abstract This case history of a man with bilateral carotid artery occlusions presents angiographic documentation of the embolization of a superficial temporal-middle cerebral artery bypass. The embolic source was thrombotic and/or atheromatous debris that had collected in the persistent stump of one of the occluded internal carotid arteries.


2019 ◽  
Vol 16 (1) ◽  
pp. 42-47
Author(s):  
Robin Bhattarai ◽  
Chuan Chen ◽  
Chao Feng Liang ◽  
Teng Chao Huang ◽  
Hui Wang ◽  
...  

We summarize the treatment effectiveness and experience of a patient who underwent internal carotid balloon occlusion combined with Intermediate-flow bypass as a treatment for large-giant cavernous sinus segment internalcarotid artery (CS ICA) aneurysms. A 62-year-old woman presented with a large aneurysm on the right side of the cavernoussinus with dizziness for about two years and Oculomot or nerve palsy. An extra cranial intracranial (EC-IC) Intermediate-flow by pass using a radial artery bypass graft (RABG) and proximal balloon occlusion of the Right ICA were performed. The patient experienced no new neurologic deficit after this treatment. Follow up radiologic evaluations using Computed Tomography Angiography revealed complete aneurysm occlusion. For patients with large-giant CS ICA aneurysms, treatment of ICA occlusion combined with Intermediate-flow superficial temporal artery-Radial artery-middle cerebralartery bypass surgery was an effective and safe surgical strategy.


2013 ◽  
Vol 2013 ◽  
pp. 1-5
Author(s):  
Melike Balikoglu-Yilmaz ◽  
Muhittin Taskapili ◽  
Tolga Yilmaz ◽  
Mehmet Yasin Teke

Sectorial retinitis pigmentosa (RP) and optic disc pit (ODP) are rare clinical conditions. We present a 40-year-old woman with a history of mild night blindness and decreased vision in the right eye for about 5 years. Fundus examination revealed retinal pigmentary changes in the superior and inferotemporal sectors covering the macula and reduced arterial calibre and ODP at the temporal edge of the optic disc. In addition, fundus autofluorescence, spectral-domain optical coherence tomography, fluorescein angiography, and multifocal electroretinogram scans confirmed these clinical findings. Visual acuity was decreased due to an atrophic-appearing foveal lesion. No intervention was suggested because of the poor visual potential. To the best of our knowledge, the present study is the first to describe coexistent optic disc pit and sectorial RP in the superior and inferotemporal sectors covering the macula in the same eye with figures.


2003 ◽  
Vol 5 (4) ◽  
pp. 241-244 ◽  
Author(s):  
S Lester ◽  
K Pratschke

A 2-year old, neutered male domestic short hair cat presented with a large mass involving the right upper lip and underlying gingiva. A previous attempt at mass excision had failed, and the histopathological diagnosis was reported to be a fibrosarcoma. The cat was otherwise in good health. A central hemimaxillectomy was performed with extensive soft-tissue dissection and maxillofacial reconstruction achieved using an axial pattern flap based on the superficial temporal artery. This is the first reported clinical case of the use of the superficial temporal artery axial pattern flap in the cat. Histopathology identified a periodontal fibromatous epulis.


Author(s):  
Nyoman Gde Trizka Santhiadi ◽  
I. Nyoman Semadi

Scalp arteriovenous malformation (AVM) are rare conditions that usually need surgical treatment. Its management is difficult because of its high shunt flow, complex vascular anatomy, and possible cosmetic complication. The etiology of scalp AVM may be spontaneous or traumatic. This vascular lesion present as scalp lump or a mass, grotesque, pulsatile mass with a propensity to massive haemorrhage. Various treatment option that have been adopted to treat these lesions include surgical excision, ligation of feeding vessel, trans arterial and transvenous embolization, injection of sclerosant into the nidus and electro thrombosis. A 22-years-old-female referred to cardiothoracic division with a 10 years history of a large fronto-parietal pulsatile reddish soft mass, progressively increasing in size, measuring about 15x6x2 cm, ulcerated area; without any symptoms and history of trauma. Three-dimensional CT angiography demonstrated a mass that was completely within the scalp and prominent vascular that was completely within the scalp and was not associated with bone or periosteum. The feeding arteries were originated from angular artery, supratrochlear artery, left and right superficial temporal artery. Surgical excision and ligation of feeding vessel was performed without complication. With pre-operative appropriate surgical planning, scalp AVM can be excised safely without any major complication. Though some cases may be treated with percutaneous or endovascular embolization, surgery remains the treatment of choice. In the event of scalp ulceration and haemorrhage, total excision is the only option.


2019 ◽  
Vol 10 (4) ◽  
pp. 40-48
Author(s):  
A. A. Sufianov ◽  
S. M. Karasev ◽  
R. R. Khafizov ◽  
R. R. Rustamov ◽  
R. A. Sufianov ◽  
...  

Introduction. Arteriovenous malformations (AVM) of the head represent the rare lesions that have a congenital, traumatic or post-infectious nature. In the last decade, endovascular methods have become the most prevalent in the treatment of AVM. Staged embolization is performed to achieve maximum effect and minimize the complications.Case report. A 30-year-old female patient is presented with complaints of enlarged vessels in the frontal and parietal regions. CT-angiography scan and cerebral angiography showed extracranial AVM of the fronto-parietal regions with afferent vascular supply from the right and left superficial temporal and ophtalmic arteries with significant expansion of the afferent arteries and the presence of varix dilatation of the draining veins. Two-stage endovascular embolization of AVM was performed. The first stage was embolization of the afferent vessels from the left superficial temporal artery system with exclusion of 60–65% AVM volume. Three months later, the second stage was performed with embolization of the afferent vessels from the right superficial temporal artery system and the exclusion of 75–80% of the residual volume of AVM. The non-adhesive composition SQUIDR12 (Emboflu, Switzerland) and glue composition PHILR25% (Microvention, USA) were used. A good aesthetic effect was achieved. Postoperative complications were not observed. There was no recurrence during the observation within a year.Summary. The staging and the use of various liquid embolization agents in the treatment of AVM of the head allow to achieve a good aesthetic outcome and prevent complications associated with facial soft tissue necrosis.


Author(s):  
Giancarlo Saal-Zapata ◽  
Rodolfo Rodríguez-Varela

Abstract Background Endovascular treatment of vascular pathologies through the transradial approach has been increasingly used and has demonstrated a low rate of complications. Objective To report our initial experience in the endovascular treatment of cerebrovascular diseases with the transradial approach and to determine its safety and feasibility. Methods Consecutive patients who underwent the transradial approach for endovascular treatment of aneurysms and vascular malformations were reviewed at a single institution. Technical success, fluoroscopy time, and access-related complications were analyzed. Results Eight patients underwent endovascular treatment with the transradial approach. One arteriovenous fistula, one superficial temporal artery aneurysm, three arteriovenous malformations, and four aneurysms were treated successfully. The radial artery was successfully approached and a 6-F sheath was used in all the cases. Navigation of guiding catheters (5 and 6 F) was done without complications. The most commonly approached artery was the right internal carotid artery, followed by the right vertebral artery. Postoperative vasospasm was identified in three patients. Mean fluoroscopy time was 34.7 minutes. Conversion to transfemoral approach was not required. No postoperative complications were reported. Conclusions In our initial experience, the transradial approach is a safe and feasible alternative for the endovascular treatment of cerebrovascular pathologies.


2021 ◽  
Vol 108 (Supplement_6) ◽  
Author(s):  
S Farooq ◽  
R Sarai ◽  
K McMillan

Abstract Patients undergo temporo-mandibular joint (TMJ) arthroscopy as part of the diagnosis and management of chronic pain in the TMJ. Known complications of the procedure include bleeding within the joint spaces, lacerations of the external auditory canal and local nerve damage. We present the case of a 25-year-old woman who developed an arteriovenous fistula in the right pre-auricular region secondary to TMJ arthroscopic examination. She had presented with ongoing TMJ pain necessitating further investigation with arthroscopy. Following her procedure her TMJ symptoms improved, however she developed right pre-auricular swelling of gradual onset, right-sided headaches, and pulsatile tinnitus. Due to her pregnancy of around 16 weeks this was originally linked to expansion in plasma volume and hyperdynamic circulation; however, this was later diagnosed as an extremely rare, post-operative complication of TMJ arthroscopy. Her examination revealed a pre-auricular pulsatile swelling measuring approximately 1.5 cm. Blood tests including ESR and CRP were within normal limits excluding temporal arteritis. An ultrasound scan revealed an AV fistula of the right superficial temporal artery; Her MRI confirmed single vessel supply. Following discussion in the vascular anomalies MDT, she underwent embolisation with PHIL and surgical excision via a preauricular approach. The procedure was successful, and the patient made a full recovery. The literature reports very few cases of iatrogenic arterio-venous fistulas resulting from TMJ arthroscopic surgery. Our case emphasises the importance of a multidisciplinary approach in combining embolisation with surgical excision resulting in the successful management of a rare post-operative complication.


2019 ◽  
Vol 12 (3) ◽  
pp. e228414
Author(s):  
Htay Htay Kyi ◽  
Kewan Hamid ◽  
Luay Alkotob ◽  
Thair Dawood

Myxoid degeneration of the aortic valve as a cause of acute aortic valve regurgitation in young age is uncommon. We report a 39-year-old African-American man with a history of epilepsy and hypertension who presented with a 1-month history of worsening shortness of breath. He was diagnosed with acute pulmonary oedema. Transoesophageal echocardiogram showed normal ejection fraction but severe aortic valve insufficiency with small masses on the ventricular side of the right and non-coronary cusps, small vegetations cannot be ruled out but other valves were normal. Subsequent cultures were negative for endocarditis. Myocardial positron emission tomography (PET) scan was strongly suggestive of cardiac sarcoidosis. However, this diagnosis was ruled out as well when he underwent aortic valve replacement with bioprosthetic valve as he did not want to take long-term anticoagulation. Histological examination of the aortic valve showed myxoid degeneration. The patient was doing very well 1 year after the surgery.


Sign in / Sign up

Export Citation Format

Share Document