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Llompart-Pou JA, Galarza L, Amaya-Villar R, Godoy DA. Transcranial sonography in the critical patient. Med Intensiva 2024; 48:165-173. [PMID: 38431382 DOI: 10.1016/j.medine.2023.07.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Accepted: 06/09/2023] [Indexed: 03/05/2024]
Abstract
Transcranial ultrasonography is a non-invasive, bedside technique that has become a widely implemented tool in the evaluation and management of neurocritically ill patients. It constitutes a technique in continuous growth whose fundamentals (and limitations) must be known by the intensivist. This review provides a practical approach for the intensivist, including the different sonographic windows and planes of insonation and its role in different conditions of the neurocritical patients and in critical care patients of other etiologies.
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Affiliation(s)
- Juan Antonio Llompart-Pou
- Servei de Medicina Intensiva, Hospital Universitari Son Espases, Institut d'Investigació Sanitària Illes Balears (IdISBa), Palma, Spain.
| | - Laura Galarza
- Servicio de Medicina Intensiva, Hospital General Universitario de Castellón, Castellón de la Plana, Spain
| | - Rosario Amaya-Villar
- Unidad Clínica de Cuidados Intensivos, Hospital Universitario Virgen del Rocío, Sevilla, Spain
| | - Daniel Agustín Godoy
- Unidad de Cuidados Neurointensivos, Sanatorio Pasteur, San Fernando del Valle de Catamarca, Argentina
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Bittencourt Rynkowski C, Caldas J. Ten Good Reasons to Practice Neuroultrasound in Critical Care Setting. Front Neurol 2022; 12:799421. [PMID: 35095741 PMCID: PMC8793827 DOI: 10.3389/fneur.2021.799421] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Accepted: 12/13/2021] [Indexed: 01/13/2023] Open
Abstract
In the beginning, cerebral ultrasound (US) was not considered feasible because the intact skull was a seemingly impenetrable obstacle. For this reason, obtaining a clear image resolution had been a challenge since the first use of neuroultrasound (NUS) for the assessment of small deep brain structures. However, the improvements in transducer technologies and advances in signal processing have refined the image resolution, and the role of NUS has evolved as an imaging modality for the brain parenchyma within multiple pathologies. This article summarizes ten crucial applications of cerebral ultrasonography for the evaluation and management of neurocritical patients, whose transfer from and to intensive care units poses a real problem to medical care staff. This also encompasses ease of use, low cost, wide acceptance by patients, no radiation risk, and relative independence from movement artifacts. Bedsides, availability and reliability raised the interest of critical care intensivists in using it with increasing frequency. In this mini-review, the usefulness and the advantages of US in the neurocritical care setting are discussed regarding ten aspects to encourage the intensivist physician to practice this important tool.
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Affiliation(s)
- Carla Bittencourt Rynkowski
- Intensive Care Unit of Cristo Redentor Hospital, Porto Alegre, Brazil.,Intensive Care Unit, Hospital Ernesto Dornelles, Porto Alegre, Brazil
| | - Juliana Caldas
- Escola Bahiana de Medicina e Saúde Pública, Salvador, Brazil.,Instituto D'Or de Pesquisa e Ensino (IDOR), Salvador, Brazil
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Koutroulou I, Tsivgoulis G, Karacostas D, Ikonomidis I, Grigoriadis N, Karapanayiotides T. Prevalence of patent foramen ovale in the Greek population is high and impacts on the interpretation of the risk of paradoxical embolism (RoPE) score. Ther Adv Neurol Disord 2021; 13:1756286420964673. [PMID: 33425013 PMCID: PMC7758802 DOI: 10.1177/1756286420964673] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Accepted: 09/14/2020] [Indexed: 11/16/2022] Open
Abstract
Background: The risk of paradoxical embolism (RoPE) score calculates the probability that
patent foramen ovale (PFO) is causally related to stroke (PFO attributable
fraction, PFOAF), based on PFO prevalence in patients with cryptogenic
stroke (CS) compared with that in the general population. The latter has
been estimated at 25%; however, PFO prevalence in nonselected populations
varies widely. Methods: Since PFO prevalence in Greece remains unknown, we evaluated it and we
calculated PFOAF stratified by RoPE score in a cohort of patients with
CS ⩽55 years old. PFO was detected according to the international consensus
transcranial Doppler (TCD) criteria in 124 healthy subjects (H), in 102
patients with CS, and in 56 patients with stroke of known cause (nonCS).
Each subject underwent unilateral middle cerebral artery recording after
infusion of agitated saline, at rest, and after a controlled Valsalva
maneuver. We characterized PFO as large (>20 microbubbles or curtain),
moderate (11–20), and small (⩽10). Results: PFO was detected in 42.7% of H, 49% of CS, and 25% of nonCS
(p = 0.013). Large PFOs were numerically higher in CS
[28.4% (29/102)] compared with H [19.3% (24/124); p = 0.1]
and to nonCS [7.1% (4/56), p = 0.04]. The median RoPE score
in patients with CS and PFO was seven. Even patients with very high RoPE
score (9–10) had moderate PFOAF (57%). For any individual stratum up to RopE
score 8, PFOAF was <33%. Conclusions: PFO prevalence in the Greek population is much higher than the widely
accepted 25%. PFO may be the cause of stroke in one out of nine Greek
patients with CS. Among Greek CS patients who harbor a PFO, the latter is
causal in one out of five. The established RoPE score cutoff of ⩾7 for
having a probable PFO-associated stroke may overestimate the probability in
patients deriving from populations with high PFO prevalence.
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Affiliation(s)
- Ioanna Koutroulou
- 2nd Department of Neurology, AHEPA University Hospital, School of Health Sciences, Department of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Georgios Tsivgoulis
- 2nd Department of Neurology, Attikon University Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Dimitris Karacostas
- 2nd Department of Neurology, AHEPA University Hospital, School of Health Sciences, Department of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Ignatios Ikonomidis
- 2nd Department of Cardiology, Attikon University Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Nikolaos Grigoriadis
- 2nd Department of Neurology, AHEPA University Hospital, School of Health Sciences, Department of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Theodoros Karapanayiotides
- 2nd Department of Neurology, Aristotle University of Thessaloniki, AHEPA University Hospital, S.Kyriakidi 1, Thessaloniki, 54636, Greece
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Diagnosis of Patent Foramen Ovale: The Combination of Contrast Transcranial Doppler, Contrast Transthoracic Echocardiography, and Contrast Transesophageal Echocardiography. BIOMED RESEARCH INTERNATIONAL 2020; 2020:8701759. [PMID: 32185222 PMCID: PMC7060853 DOI: 10.1155/2020/8701759] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Accepted: 02/01/2020] [Indexed: 01/27/2023]
Abstract
Objectives To access the distinct values of contrast transcranial Doppler (cTCD), contrast transthoracic echocardiography (cTTE), and contrast transesophageal echocardiography (cTEE) in the diagnosis of right-to-left shunt (RLS) due to patent foramen ovale (PFO) and to define the most practical strategy for the diagnosis of PFO. Methods 102 patients with a high clinical suspicion for PFO had simultaneous cTCD, cTTE, and cTEE performed. The agitated saline mixed with blood was used to detect right-to-left shunt (RLS). Results In all 102 patients, the shunt was detected at rest by cTCD in 60.78% of cases, by cTTE in 42.16%, and by cTEE in 47.06%. The positive results of all 3 techniques with Valsalva maneuver (VM) were significantly improved. cTCD showed higher pick-up rate than cTTE (98.04% vs. 89.22%; χ2 = 12.452, p < 0.05) and the cTEE (98.04% vs. 96.08%; nonsignificant difference) in the diagnosis of PFO. Nevertheless, cTEE, compared with cTTE, underestimated shunting in 44% of patients. The diameter of both PFO entrance and exit was significantly greater in patients with a severe shunt compared with a mild shunt (2.8 ± 1.0 mm vs. 2.0 ± 0.7 mm, t = 3.135, p < 0.05) and the cTEE (98.04% vs. 96.08%; nonsignificant difference) in the diagnosis of PFO. Nevertheless, cTEE, compared with cTTE, underestimated shunting in 44% of patients. The diameter of both PFO entrance and exit was significantly greater in patients with a severe shunt compared with a mild shunt (2.8 ± 1.0 mm vs. 2.0 ± 0.7 mm, t = 3.135, p < 0.05) and the cTEE (98.04% vs. 96.08%; nonsignificant difference) in the diagnosis of PFO. Nevertheless, cTEE, compared with cTTE, underestimated shunting in 44% of patients. The diameter of both PFO entrance and exit was significantly greater in patients with a severe shunt compared with a mild shunt (2.8 ± 1.0 mm vs. 2.0 ± 0.7 mm, t = 3.135, p < 0.05) and the cTEE (98.04% vs. 96.08%; nonsignificant difference) in the diagnosis of PFO. Nevertheless, cTEE, compared with cTTE, underestimated shunting in 44% of patients. The diameter of both PFO entrance and exit was significantly greater in patients with a severe shunt compared with a mild shunt (2.8 ± 1.0 mm vs. 2.0 ± 0.7 mm, Conclusions The best method to diagnose PFO should be the combination of cTCD, cTTE, and cTEE. And cTCD should be applied as the first choice for screening RLS. Then, cTTE should be performed to quantify the severity of the shunt. Last but not least, cTEE should be performed to assess the morphologies of PFO when the closure is planned. The study provides for clinicians the most practical strategy for diagnosing PFO in the future. However, further trials with a large sample size are required to confirm this finding.
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Modified Method of Contrast Transthoracic Echocardiography for the Diagnosis of Patent Foramen Ovale. BIOMED RESEARCH INTERNATIONAL 2019; 2019:9828539. [PMID: 31211145 PMCID: PMC6532309 DOI: 10.1155/2019/9828539] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Accepted: 05/02/2019] [Indexed: 12/23/2022]
Abstract
Purpose To compare the sensitivity and specificity of modified and traditional methods of contrast echocardiography of the right portion of the heart in patients with a suspicion of patent foramen ovale (PFO). Methods The study population consisted of 506 patients with high clinical suspicion of PFO. The traditional Valsalva maneuver consists of expiration against a closed glottis after a full inspiration. A modified Valsalva maneuver was performed with a handmade pressure monitoring device, which measured pressure during performance of the Valsalva maneuver. Modified and traditional methods of contrast echocardiography were performed among all patients. Contrast transesophageal echocardiography (TEE) was regarded as the gold standard. Results A total of 279 patients with PFO were confirmed by TEE. 259 cases (sensitivity: 92.83%) were detected by a modified method of contrast echocardiography of the right portion of the heart, while 234 cases were detected using the traditional method (sensitivity: 83.87%). The sensitivity of modified contrast echocardiography of the right portion of the heart was significantly higher than that of the traditional method (92.83% vs. 83.87%, P=0.001). However, there was no significant difference in the specificity of the two methods for the diagnosis of PFO (97.35% vs. 96.03%, P=0.431). Additionally, the results of semiquantitative evaluation of PFO using modified method failed to show a more positive rate than shown by the traditional method (Z=−1.782, P=0.075). Conclusions Modified contrast echocardiography of the right portion of the heart yielded a higher sensitivity than the traditional method, which contributed to the diagnosis of cardiac PFO. The research was a part of a register study (https://register.clinicaltrials.gov/ ClinicalTrials ID: NCT02777359).
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Mitsumura H, Arai A, Sato T, Komatsu T, Sakuta K, Sakai K, Terasawa Y, Kubota J, Iguchi Y. A novel probe attached to the neck can accurately detect a large patent foramen ovale. J Neurol Sci 2018; 392:122-125. [PMID: 30055383 DOI: 10.1016/j.jns.2018.07.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 07/17/2018] [Accepted: 07/19/2018] [Indexed: 10/28/2022]
Abstract
PURPOSE We developed a novel probe (pastable soft ultrasound probe; PSUP) attached to the neck for right-to-left shunt (RLS) detection. The purpose of this study was to evaluate the diagnostic ability of the PSUP for RLS detection by comparison with transesophageal echocardiography (TEE). METHODS The subjects were patients with ischemic strokes and transient ischemic attacks who underwent TEE. Based on TEE, patients with patent foramen ovale (PFO) were divided into two groups by the number of microbubbles (MBs): small PFO (1-29 MBs) and large PFO (≥30 MBs). Then, PSUP examination of one common carotid artery (CCA) was started using a procedure similar to TEE. RLS was diagnosed by PSUP when one or more microembolic signals were found in the CCA. The detection rate by size of PFO was compared between TEE and PSUP, and the diagnostic accuracy of PSUP was calculated. RESULTS From May 2014 to July 2016, 84 patients (63 males, median age 63 years) were included; 41 (49%) were diagnosed with PFO by TEE, while PSUP detected PFO in 31 (37%). Using TEE findings as the reference, PSUP for PFO showed sensitivity of 68%, specificity of 93%, and accuracy of 81%. On TEE, 22 patients had large PFOs, and 19 patients had small PFOs. The PSUP could identify large PFOs in grade I and II of International Consensus Criteria more accurately than small ones (58 and 86% vs. 29 and 14%, P = 0.003). CONCLUSIONS The PSUP has considerable accuracy for diagnosing large PFOs. PSUP should play an important role in detecting large PFOs.
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Affiliation(s)
- Hidetaka Mitsumura
- Department of Neurology, The Jikei University School of Medicine, Japan.
| | - Ayumi Arai
- Department of Diagnostic Radiology, The Jikei University School of Medicine, Japan.
| | - Takeo Sato
- Department of Neurology, The Jikei University School of Medicine, Japan
| | - Teppei Komatsu
- Department of Neurology, The Jikei University School of Medicine, Japan
| | - Kenichi Sakuta
- Department of Neurology, The Jikei University School of Medicine, Japan
| | - Kenichiro Sakai
- Department of Neurology, The Jikei University School of Medicine, Japan
| | - Yuka Terasawa
- Department of Neurology, The Jikei University School of Medicine, Japan
| | - Jun Kubota
- Hahimoto Electronic Industry Co., Ltd, Japan.
| | - Yasuyuki Iguchi
- Department of Neurology, The Jikei University School of Medicine, Japan.
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Liu C, Lu T, Zhai NN, Bu N, Wang HQ, Chen MY, Wu HQ. Different Valsalva Manoeuvre Procedures for the Diagnosis of Right-to-Left Shunt by Contrast-Transcranial Doppler. ULTRASOUND IN MEDICINE & BIOLOGY 2017; 43:1716-1721. [PMID: 28545857 DOI: 10.1016/j.ultrasmedbio.2017.04.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2016] [Revised: 03/08/2017] [Accepted: 04/05/2017] [Indexed: 06/07/2023]
Abstract
The main purpose of this study was to compare two contrast agent injection times during the Valsalva manoeuvre (VM) for the diagnosis of right-to-left shunt using contrast-transcranial Doppler (c-TCD). In total, 992 consecutive patients underwent testing. All patients underwent step 1, and then a coin toss was used to determine the order of steps 2 and 3. The following testing steps were repeated twice: (1) a contrast agent (CA) was infused at rest (CA at rest testing); (2) the VM was initiated immediately after CA injection and released 10 s after CA injection (CA pre-VM testing); and (3) a CA was injected 5 s after initiating the VM, which was released 5 s after CA injection (CA mid-VM testing). For the CA at rest, pre-VM and mid-VM groups, significant differences were observed in the positive right-to-left shunt diagnosis rates (11.49% vs. 23.08% vs. 26.11%, respectively, with an inter-group significance of p < 0.05) and grade classifications (p < 0.05). Although the times to first microbubble appearance were similar between the CA at rest and the CA pre-VM groups (8.96 ± 3.40 s vs. 8.42 ± 3.72 s, p > 0.05), it was shorter (6.4 ± 2.75 s, p < 0.05) for the CA mid-VM group than for the other two groups. For the c-TCD testing, the CA mid-VM group yielded different results for diagnosing right-to-left shunts relative to the CA pre-VM group.
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Affiliation(s)
- Chao Liu
- Department of Neurology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China; Department of Education, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Teng Lu
- Department of Orthopaedics, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Ni-Na Zhai
- Department of Neurology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Ning Bu
- Department of Neurology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Hu-Qing Wang
- Department of Neurology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Meng-Yi Chen
- Department of Neurology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Hai-Qin Wu
- Department of Neurology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.
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Wang SB, Liu KD, Yang Y, Li YJ, Hu MY, Lin P, Guo R, Tian Q, You Y, Cui YH, Zhang GL, Dong Z, Gao YS, Xing YQ. Prevalence and extent of right-to-left shunt on contrast-enhanced transcranial Doppler in Chinese patients with migraine in a multicentre case-control study. Cephalalgia 2017; 38:690-696. [PMID: 28474985 DOI: 10.1177/0333102417708203] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Background The association between RLS and migraine is still debated. The aim of this study is to investigate the prevalence and grade of RLS in Chinese patients with migraine and to evaluate the relationship between RLS and migraine. Methods A multi-center case-control study of contrast-enhanced transcranial Doppler was conducted in 931 consecutive patients with migraine (240 of 931 had migraine with aura and 691 of 931 were in the migraine without aura group) and 282 were healthy adults. Clinical trial no. NCT02425696. Results The prevalence of RLS was 63.8% and 39.9% in the migraine with aura group (MA+) and migraine without aura group (MA−), respectively, significantly higher than that of the healthy group (29.4%, p < 0.001; p < 0.001). The positive rate of large RLS in the MA+ group and MA− group was 32.1% and 16.5%, respectively, significantly higher than healthy group (6.4%, p < 0.001; p < 0.001). There was no difference among groups in terms of positive rate of permanent RLS ( p = 0.704). Conclusion This multi-centre case-control study suggested that there is an association between RLS and migraine with and without aura, especially when the shunt is large.
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Affiliation(s)
- Si-Bo Wang
- Neuroscience Centre, Department of Neurology, The First Hospital of Jilin University, Changchun, China
| | - Kang-Ding Liu
- Neuroscience Centre, Department of Neurology, The First Hospital of Jilin University, Changchun, China
| | - Yi Yang
- Neuroscience Centre, Department of Neurology, The First Hospital of Jilin University, Changchun, China
| | - Ya-Jie Li
- Diagnostic Ultrasound Centre, The Centre Hospital of Jilin City, Jilin, China
| | - Ming-Yi Hu
- Department of Neurology, Weifang People’s Hospital, Weifang, China
| | - Pan Lin
- Department of Neurology, The Second Hospital of Longyan City, Longyan, China
| | - Rong Guo
- Department of Neurology Function, The People’s Hospital of Liaoning Province, Shenyang, China
| | - Qian Tian
- Department of Neurology, People’s Hospital of Linyi city, Linyi, China
| | - Yong You
- Department of Neurology, The First Hospital of University of South China, Hengyang, China
| | - Ying-Hua Cui
- Centre of Head and Neck Vascular Ultrasound, Department of Neurology, The Hospital of Yanbian University, Yanji, China
| | - Guan-Ling Zhang
- Department of Ultrasound, The Centre Hospital of Changsha City, Changsha, China
| | - Zhao Dong
- Department of Neurology, Chinese PLA General Hospital, Beijing, China
| | - Yong-Sheng Gao
- Department of Cardiac Surgery, The First Hospital of Jilin University, Changchun, China
| | - Ying-Qi Xing
- Neuroscience Centre, Department of Neurology, The First Hospital of Jilin University, Changchun, China
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Puledda F, Toscano M, Pieroni A, Veneroso G, Di Piero V, Vicenzini E. Right-to-left shunt detection sensitivity with air-saline and air-succinil gelatin transcranial Doppler. Int J Stroke 2017; 11:229-38. [PMID: 26783315 DOI: 10.1177/1747493015609938] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
BACKGROUND Air-saline transcranial Doppler is nowadays the first-choice examination to identify right-to-left shunt. To increase right-to-left shunt detection in echocardiography, cardiologists also use air-gelatin mixtures, which are more stable, more echogenic, and easier to be prepared. AIM We assessed the sensitivity of air-gelatin compared with air-saline for transcranial Doppler right-to-left shunt detection. METHODS Air-saline transcranial Doppler, during unilateral middle cerebral artery monitoring at rest and after Valsalva maneuver, was performed in patients referred to our neurosonology laboratory for right-to-left shunt detection. The same transcranial Doppler protocol was repeated with air-gelatin. To consider transcranial Doppler positive for cardiac right-to-left shunt, at least one embolic signal had to be detected within 20″ from contrast injection. Later signals were interpreted of pulmonary origin. Trans-thoracic echocardiography was repeated with both air-saline and air-gelatin. RESULTS A total of 97 patients were enrolled; 46 had negative transcranial Doppler for cardiac right-to-left shunt with both air-saline and air-gelatin; out of these, four patients with air-saline plus two more patients with air-gelatin presented late, isolated microemboli, slightly more numerous with air-gelatin: these were interpreted as pulmonary shunts and confirmed with trans-thoracic echocardiography. In 28 patients with already early positive air-saline transcranial Doppler at rest, air-gelatin induced a marked right-to-left shunt increase, facilitating its visualization at trans-thoracic echocardiography. In 23 patients in whom air-saline transcranial Doppler was negative at rest and positive for cardiac right-to-left shunt only after Valsalva maneuver, air-gelatin was able to reveal shunt also at rest. CONCLUSIONS Air-gelatin increases right-to-left shunt detection sensitivity with transcranial Doppler in particular at rest, even in patients in whom air-saline mixture fails to identify the shunt. The choice of air-gelatin mixture should be considered for multicentric, clinical, and research trials.
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Affiliation(s)
- Francesca Puledda
- Neurosonology Laboratory, Stroke Unit, Department of Neurology and Psychiatry, Sapienza University of Rome, Rome, Italy
| | - Massimiliano Toscano
- Neurosonology Laboratory, Stroke Unit, Department of Neurology and Psychiatry, Sapienza University of Rome, Rome, Italy
| | - Alessio Pieroni
- Neurosonology Laboratory, Stroke Unit, Department of Neurology and Psychiatry, Sapienza University of Rome, Rome, Italy
| | - Gabriele Veneroso
- Department of Cardiovascular and Respiratory Sciences, Sapienza University of Rome, Rome, Italy
| | - Vittorio Di Piero
- Neurosonology Laboratory, Stroke Unit, Department of Neurology and Psychiatry, Sapienza University of Rome, Rome, Italy
| | - Edoardo Vicenzini
- Neurosonology Laboratory, Stroke Unit, Department of Neurology and Psychiatry, Sapienza University of Rome, Rome, Italy
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Wang SB, Wang XC, Ma Y, Liu KD, Xing YQ. Right-to-left shunt detection using contrast-enhanced transcranial Doppler: A comparison of provocation maneuvers between coughing and a modified Valsalva maneuver. PLoS One 2017; 12:e0175049. [PMID: 28384297 PMCID: PMC5383058 DOI: 10.1371/journal.pone.0175049] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Accepted: 03/20/2017] [Indexed: 01/03/2023] Open
Abstract
Contrast-enhanced transcranial Doppler (c-TCD) has been used to detect right-to-left shunts (RLS) because it is highly sensitive and cost-effective. The use of provocation maneuvers, such as physiologic maneuvers (e.g., coughing) and the Valsalva maneuver (VM) to transiently increase right atrial pressure and induce RLS increases the sensitivity of RLS detection. In this study, we sought to determine whether coughing is as effective as the VM in aiding the detection of RLS. We evaluated 162 subjects for RLS, using c-TCD under three different conditions: (i) resting state, (ii) coughing, and (iii) modified VM (m-VM), which involved blowing into a tube connected to a sphygmomanometer at 40 mmHg for 10 s. The positive rate of RLS detection with the m-VM was significantly higher than that with coughing. In addition, a difference between the two maneuvers was observed in terms of the degree of RLS seen. The m-VM should be widely used to detect RLS, because it is reliable, standardized, and cost-effective.
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Affiliation(s)
- Si-Bo Wang
- Neuroscience Center, Department of Neurology, The First Hospital of Jilin University, Changchun, China
| | - Xiao-Cong Wang
- Department of Echocardiography, Cardiovascular Center, The First Hospital of Jilin University, Changchun, China
| | - Yan Ma
- Department of Echocardiography, Cardiovascular Center, The First Hospital of Jilin University, Changchun, China
| | - Kang-Ding Liu
- Neuroscience Center, Department of Neurology, The First Hospital of Jilin University, Changchun, China
- * E-mail: (YQX); (KDL)
| | - Ying-Qi Xing
- Neuroscience Center, Department of Neurology, The First Hospital of Jilin University, Changchun, China
- * E-mail: (YQX); (KDL)
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Zhao E, Wei Y, Zhang Y, Zhai N, Zhao P, Liu B. A Comparison of Transthroracic Echocardiograpy and Transcranial Doppler With Contrast Agent for Detection of Patent Foramen Ovale With or Without the Valsalva Maneuver. Medicine (Baltimore) 2015; 94:e1937. [PMID: 26512622 PMCID: PMC4985435 DOI: 10.1097/md.0000000000001937] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Patent foramen ovale (PFO) is a remnant of the fetal circulation exist in 20% of the general population. The purpose of our study was to compare of transthoracic echocardiography (TTE) and contrast-transcranial Doppler sonography (c-TCD) in the diagnosis and quantification of PFO with or without the Valsalva maneuver (VM).We studied 106 patients with a high clinical suspicion for PFO prospectively. Simultaneous c-TCD and TTE were conducted using agitated saline solution to detect right to left shunt (RLS). To classify RLS, mainly PFO, we applied a 4-level visual classification for c-TCD test: no occurrence of micro-embolic signals; grade I, 1 to 10 signals; grade II, 10 to 30 signals but not curtain; and grade III, curtain pattern. We used the number of micro-bubbles appeared in left atrium per frame image to define classification for TTE test: no occurrence of micro-bubbles; grade I, 1 to 10 micro-bubbles; grade II, 10 to 30 micro-bubbles; and grade III, more than 30 micro-bubbles or left atrium nearly filled with micro-bubbles or left atrial opacity. Statistical analyses were performed using SPSS Version 18.0.RLS was detected in 36.0% in c-TCD test and in 46% in TTE test at rest (P = 0.158). And during the VM, RLS was detected in 99.0% in c-TCD test and in 83.0% in TTE test (P < 0.001). Compared with the positive results of c-TCD and TTE at rest, the positive results of them with VM is more higher, respectively (all P < 0.001). The VM obviously increased the number of micro-bubbles shunting.Both c-TCD and TTE should used as initial screening tool for PFO. VM increases the size of shunt. VM resulted in detection of more RLS both in c-TCD and TTE tests.
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Affiliation(s)
- Enfa Zhao
- From the Department of Ultrasound, Second Affiliated Hospital of Medical School, Xi'an Jiao Tong University (EZ, YW, BL); Department of General Surgery, Second Affiliated Hospital, School of Medicine, Xi'an Jiaotong University (YZ); and Transcranial Doppler Sonography Laboratory, Second Affiliated Hospital of Medical School, Xi'an Jiao Tong University, Xi'an, Shaanxi, China (NZ, PZ)
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Affiliation(s)
- Arjun K Ghosh
- Specialty Registrar in Cardiology, Hammersmith Hospital, Imperial College Healthcare NHS Trust, London W12 0HS
| | - Ajay Jain
- Consultant Cardiologist at Barts Heart Centre, St Bartholomew's Hospital, Barts Health NHS Trust, London
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Mojadidi MK, Bogush N, Caceres JD, Msaouel P, Tobis JM. Diagnostic Accuracy of Transesophageal Echocardiogram for the Detection of Patent Foramen Ovale: A Meta-Analysis. Echocardiography 2013; 31:752-8. [DOI: 10.1111/echo.12462] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Affiliation(s)
- Mohammad Khalid Mojadidi
- Department of Medicine; Albert Einstein College of Medicine; Jacobi Medical Center; Bronx New York
| | - Nikolay Bogush
- Department of Medicine; Albert Einstein College of Medicine; Jacobi Medical Center; Bronx New York
| | - Jose Diego Caceres
- Department of Medicine; Albert Einstein College of Medicine; Jacobi Medical Center; Bronx New York
| | - Pavlos Msaouel
- Department of Medicine; Albert Einstein College of Medicine; Jacobi Medical Center; Bronx New York
| | - Jonathan M. Tobis
- Program in Interventional Cardiology; David Geffen School of Medicine; University of California; Los Angeles California
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Kanaganayagam GS, Malik IS. Modern management of a patent foramen ovale. JRSM Cardiovasc Dis 2012; 1:10.1258_cvd.2012.012017. [PMID: 24175077 PMCID: PMC3738369 DOI: 10.1258/cvd.2012.012017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A patent foramen ovale (PFO) has been associated with medical conditions such as cryptogenic stroke, migraine with aura, and decompression illness. Whether closure of the PFO has clinical benefit has been suggested from registry studies, but not yet confirmed in multiple randomized trials. Methods of diagnosis of a PFO and a summary of the current evidence for treatment is presented and discussed as a guide to patient-centred decision-making.
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Affiliation(s)
- G S Kanaganayagam
- Hammersmith Hospital, Cardiovascular Sciences and the Renal Institute, Imperial College London and Imperial College Healthcare NHS Trust , London , UK
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15
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Chang J, Darbonne C, Drumm DA, Teleb MS, Frey JL. Need for Performance Protocols in TEE and TCD for Detection of Right to Left Shunts. J Neuroimaging 2012; 24:144-8. [DOI: 10.1111/j.1552-6569.2012.00729.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2012] [Revised: 05/08/2012] [Accepted: 05/22/2012] [Indexed: 11/29/2022] Open
Affiliation(s)
- Jason Chang
- Neurology Department; Barrow Neurological Institute; Phoenix AZ
| | - Carol Darbonne
- Neurology Department; Barrow Neurological Institute; Phoenix AZ
| | | | | | - James L. Frey
- Neurology Department; Barrow Neurological Institute; Phoenix AZ
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Diagnosis and quantification of patent foramen ovale. Which is the reference technique? Simultaneous study with transcranial Doppler, transthoracic and transesophageal echocardiography. Rev Esp Cardiol 2011; 64:133-9. [PMID: 21277667 DOI: 10.1016/j.recesp.2010.10.009] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2010] [Accepted: 10/12/2010] [Indexed: 01/09/2023]
Abstract
INTRODUCTION AND OBJECTIVES Patent foramen ovale (PFO) is the most common cause of cryptogenic stroke in patients younger than 55. Transesophageal echocardiography (TEE) has been accepted as the reference diagnostic technique. The purpose of this study was to compare the accuracy of transthoracic echocardiography (TTE), TEE and transcranial Doppler (TCD) in the diagnosis and quantification of patent foramen ovale. METHODS We studied 134 patients prospectively. Simultaneous TTE with TCD and TEE with TCD were performed, using agitated saline solution to detect right to left shunt. RESULTS In 93 patients diagnosed with PFO, the shunt was visualized at baseline by TCD in 69% of cases, by TTE in 74% and by TEE in 58%. The Valsalva maneuver produced a similar improvement in shunt diagnosis with all 3 techniques (26%-28%). TTE and TCD showed higher sensitivity (100% vs 97%; non significant difference) than TEE in the diagnosis of PFO (86%; P<.001). TCD performed during TEE did not diagnose 12 (13%) shunts previously diagnosed during TTE. Similarly, TEE underestimated shunt severity. CONCLUSIONS TTE enables adequate diagnosis and quantification of PFO. TEE is less sensitive and tends to underestimate the severity of the shunt.
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González-Alujas T, Evangelista A, Santamarina E, Rubiera M, Gómez-Bosch Z, Rodríguez-Palomares JF, Avegliano G, Molina C, Álvarez-Sabín J, García-Dorado D. Diagnosis and Quantification of Patent Foramen Ovale. Which Is the Reference Technique? Simultaneous Study With Transcranial Doppler, Transthoracic and Transesophageal Echocardiography. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.rec.2010.10.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Lange MC, Zétola VF, Piovesan EJ, Werneck LC. Valsalva maneuver procedures in the diagnosis of right-to-left shunt by contrast-enhanced transcranial doppler using agitated saline solution with blood as a contrast agent. ARQUIVOS DE NEURO-PSIQUIATRIA 2010; 68:410-3. [PMID: 20602046 DOI: 10.1590/s0004-282x2010000300016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2009] [Accepted: 09/08/2009] [Indexed: 11/21/2022]
Abstract
OBJECTIVE To compare two different timings for the performance of the Valsalva maneuver (VM) using an infusion of agitated saline solution with blood as contrast agent (CA) to right-to-left shunt (RLS) screening. METHOD 42 patients were submitted to a standardized contrast-enhanced transcranial doppler (cTCD) to screen for right-to-left shunt (RLS). cTCD technique was done with two different moments of the VM: [1] the CA injection during the VM (CAduringVM test); [2] the CA injection before the VM (CApreVM test). RESULTS Positive MCA tests were observed in 47 (56%) CAduringVM tests and in 50 (59.5%) CApreVM tests, p=0.64. There was an almost perfect agreement for the positive tests between the CAduringVM and CApreVM test, r s=0.829 (95% CI 0.61-1.00, p<0.001). CONCLUSION The present study demonstrates that there is no significant difference in the results of RLS screening by cTCD when two different moments of VM were done.
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Affiliation(s)
- Marcos Christiano Lange
- Neurology Division Cerebrovascular Diseases Unit, Internal Medicine Department, Hospital de Clínicas, Universidade Federal do Paraná, Curitiba, PR, Brazil.
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Caputi L, Carriero MR, Falcone C, Parati E, Piotti P, Materazzo C, Anzola GP. Transcranial Doppler and Transesophageal Echocardiography: Comparison of Both Techniques and Prospective Clinical Relevance of Transcranial Doppler in Patent Foramen Ovale Detection. J Stroke Cerebrovasc Dis 2009; 18:343-8. [DOI: 10.1016/j.jstrokecerebrovasdis.2008.12.001] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2008] [Revised: 12/04/2008] [Accepted: 12/16/2008] [Indexed: 02/05/2023] Open
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Sastry S, MacNab A, Daly K, Ray S, McCollum C. Transcranial Doppler detection of venous-to-arterial circulation shunts: criteria for patent foramen ovale. JOURNAL OF CLINICAL ULTRASOUND : JCU 2009; 37:276-280. [PMID: 19353576 DOI: 10.1002/jcu.20564] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
PURPOSE As paradoxical embolism is associated with stroke in young adults, migraine, and decompression sickness, the detection of venous-to-arterial circulation shunt (v-aCS), such as patent foramen ovale (PFO), is increasingly important. We compared a rigorous transcranial Doppler (TCD) protocol with transesophageal echocardiography (TEE) to develop criteria for PFO. METHODS Standardized TCD was performed 2 weeks before simultaneous TEE and TCD in 39 patients aged 15-39 following ischemic stroke (n = 33) or myocardial infarction (n = 6). V-aCS was investigated by contrast sonography. During standardized TCD, contrast injections were performed twice, at rest and with cough and Valsalva maneuvers. TCD and TEE were recorded and analyzed independently by 'blinded' observers. RESULTS All 16 of the 39 patients with PFO on TEE had more than 15 micro-emboli on standardized TCD; in 14 of these 16, paradoxical embolization required no provocation. Three of 9 patients with 'major' v-aCS (>50 microbubble emboli at rest or >10 at rest with >80 on provocation) on standardized TCD were not identified by TEE as having large shunts. CONCLUSION The standardized TCD protocol is sensitive in the diagnosis of PFO and with the use of provocation maneuvers measures the functional importance of v-aCS more accurately than TEE.
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Affiliation(s)
- S Sastry
- Department of Academic Surgery, South Manchester University Hospital, Manchester, United Kingdom
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Zito C, Dattilo G, Oreto G, Di Bella G, Lamari A, Iudicello R, Trio O, Caracciolo G, Coglitore S, Arrigo F, Carerj S. Patent Foramen Ovale: Comparison among Diagnostic Strategies in Cryptogenic Stroke and Migraine. Echocardiography 2009; 26:495-503. [DOI: 10.1111/j.1540-8175.2008.00852.x] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Lange MC, Zétola VF, Souza AMD, Piovesan ÉJ, Muzzio JA, Germiniani FMB, Werneck LC. Transcranial Doppler for patent foramen ovale screening: is there a good correlation with transesophageal echocardiography? ARQUIVOS DE NEURO-PSIQUIATRIA 2008; 66:785-9. [DOI: 10.1590/s0004-282x2008000600001] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2008] [Accepted: 09/29/2008] [Indexed: 11/22/2022]
Abstract
Right-to-left shunt (RLS) can be identified by contrast-enhanced transcranial Doppler (cTCD) in patent foramen ovale (PFO) patients. AIM: To evaluate cTCD for PFO screening comparing it to cTEE. METHOD: 45 previous cTCD performed for PFO diagnosis and correlated its findings with cTEE. Patients were submitted to a cTCD standardized technique and were divided in two groups according to RLS: Group 1, patients with a positive RLS and Group 2 when RLS was negative. RESULTS: 29 (65%) patients were included in group 1 and 16 (35%) in group 2. PFO confirmation by cTEE was performed in 28 (62%) patients. cTCD had a 92.85% sensitivity, 82.35% specificity, 89.65% positive predictive value and 87.5% negative predictive value when compared to cTEE for PFO diagnosis. CONCLUSION: Standardized technique cTCD allows for RLS visualization in PFO patients with a good correlation with cTEE and can be used as a screening test before cTEE.
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Sensitivity for Detection of Patent Foramen Ovale Increased with Increasing Number of Contrast Injections: A Descriptive Study with Contrast Transesophageal Echocardiography. J Am Soc Echocardiogr 2008; 21:419-24. [DOI: 10.1016/j.echo.2007.08.030] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2007] [Indexed: 11/18/2022]
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Domitrz I, Mieszkowski J, Kamińska A. Relationship Between Migraine and Patent Foramen Ovale: A Study of 121 Patients with Migraine. Headache 2007; 47:1311-8. [DOI: 10.1111/j.1526-4610.2006.00724.x] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Lao AY, Sharma VK, Tsivgoulis G, Malkoff MD, Alexandrov AV, Frey JL. Effect of body positioning during transcranial Doppler detection of right-to-left shunts. Eur J Neurol 2007; 14:1035-9. [PMID: 17718697 DOI: 10.1111/j.1468-1331.2007.01879.x] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We adopted an expanded transcranial Doppler (TCD) protocol to evaluate if additional injections of agitated saline in different positions would improve shunt detection or grading. We report the safety and feasibility of this expanded contrast TCD protocol. Patients with ischemic stroke were evaluated. The standard protocol for RLS detection was followed and expanded after the initial injection in the supine position to the right lateral decubitus, upright sitting, and sitting with right lateral leaning. Changes in blood pressure, heart rate, and any subjective complaints were noted. Changes in body position and additional agitated saline injections were tolerated. Right-to-left shunt (RLS) was detected in 35% of patients (n = 55). If the initial supine testing was negative, all subsequent positions/injections were also negative for RLS. However, if the supine injection was positive for RLS, the change in body positions increased the microbubble (microB) count in eight of 19 (42%) RLS-positive patients. The mean microB count in RLS-positive patients was 20 (95% CI: 9-32). The use of three additional body positions increased the microB count to 73 (95% CI: 13-132). The highest microB yield was achieved in the upright sitting position. Our findings support the safety and feasibility of the expanded TCD protocol. If the initial supine Valsalva-aided contrast TCD test is negative, there may be no need to study the patient in additional positions. However, if microB are detected in the supine position, additional testing for RLS in alternative positions may be found to be worthwhile.
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Affiliation(s)
- A Y Lao
- Neurosonology and Stroke Research Program, Barrow Neurological Institute, Phoenix, AZ, USA.
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Engelhardt M, Folkers W, Brenke C, Scholz M, Harders A, Fidorra H, Schmieder K. Neurosurgical operations with the patient in sitting position: analysis of risk factors using transcranial Doppler sonography. Br J Anaesth 2006; 96:467-72. [PMID: 16464980 DOI: 10.1093/bja/ael015] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND One major risk factor of the sitting position for neurosurgery is air embolism, especially in patients with persistent foramen ovale (PFO). The first aim of this prospective study was to evaluate a bedside method for detecting PFO using transcranial Doppler sonography (TCD) with contrast medium. A second aim was to address intraoperative monitoring, patient positioning and the occurrence and clinical relevance of air embolism. METHODS Ninety patients with a mean age of 56.5 yr (range 14-81 yr) undergoing surgery in sitting position were investigated by TCD with contrast agent to detect functional PFO, that is PFO that can be provoked with a Valsalva manoeuvre. In patients in whom TCD was not possible, transcranial duplex sonography, duplex sonography of the carotid artery at the neck or transoesophageal ECG was performed. RESULTS In 26 patients PFO was detected. Thirteen of them presented a persistent PFO with high-intensity transient signal in both middle cerebral arteries without Valsalva manoeuvre. The intraoperative positioning in these patients was adapted to the risk for a paradoxical air embolism, although, after surgical recommendations, three patients with a persistent PFO underwent surgery in sitting position. Intraoperative air embolisms were seen in 8 of 80 patients in sitting or semi-sitting position with air aspirable through the central venous catheter. CONCLUSION To address the risk of a paradoxical air embolism, especially in patients undergoing surgery in sitting position, preoperative detection of PFO is advisable. If surgery is performed in seated PFO patients, additional monitoring and special care are warranted.
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Affiliation(s)
- M Engelhardt
- Department of Neurosurgery, Intensive Care Medicine and Pain Therapy, Ruhr-University Bochum, Knappschaftskrankenhaus Bochum, In der Schornau 23-25, 44892 Bochum, Germany.
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Topçuoglu MA, Buonanno FS. Importance of Jugular Valve Incompetence in Contrast Transcranial Doppler Ultrasonography for the Diagnosis of Patent Foramen Ovale. J Neuroimaging 2006. [DOI: 10.1111/j.1552-6569.2003.tb00191.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Kiblawi FM, Sommer RJ, Levchuck SG. Transcatheter closure of patent foramen ovale in older adults. Catheter Cardiovasc Interv 2006; 68:136-42; discussion 143-4. [PMID: 16755591 DOI: 10.1002/ccd.20722] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVES Comparing results of patent foramen ovale (PFO) closure in older and younger patient cohorts. BACKGROUND The literature pertaining to stroke and PFO has focused on patients <55 years of age. METHODS Between March 2000 and December 2003, 456 consecutive stroke/transient ischemic attack (TIA) patients (14.2-91.1 years, mean 51.4 +/- 15.5) underwent successful closure of PFO with a CardioSEAL Septal Occluder by one operator at five hospitals. Of the 456 patients, 184 (40.4%) were >55 years of age at the time of the procedure (mean 66.9 +/- 8.3 years) and comprise the subject group (OLDER). The remaining 272 patients (mean 41.1 +/- 7.7) comprise the control group (YOUNGER). Data were collected prospectively in a registry type format. RESULTS Minor procedural complications were comparable: 7/184 (3.8%) OLDER vs. 12/272 (4.4%) YOUNGER (P = NS). In the follow-up period (1-45 months, mean = 17.8 +/- 11.1), there was no significant difference in the rate of recurrent stroke/TIA, headaches, or late unrelated death. Forty OLDER patients and 47 YOUNGER developed new onset atrial arrhythmia (P = NS). The incidence of new onset atrial fibrillation (AF), however, was significantly higher in OLDER (14/40 OLDER and only 2/47 YOUNGER, P < 0.025). All patients who were in normal sinus rhythm (NSR) before the procedure are in NSR at last follow-up. CONCLUSIONS Older patients should not be excluded from PFO closure. The procedure seems as safe and effective in preventing recurrent stroke in the older, as in the younger population. Older patients seem more prone to developing AF.
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Affiliation(s)
- Fuad M Kiblawi
- Division of Pediatric Cardiology, St. Joseph Children's Hospital, Paterson, NJ 07503, USA.
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Uzuner N, Horner S, Pichler G, Svetina D, Niederkorn K. Right-to-left shunt assessed by contrast transcranial Doppler sonography: new insights. JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2004; 23:1475-1482. [PMID: 15498912 DOI: 10.7863/jum.2004.23.11.1475] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
OBJECTIVE Simple diagnostic techniques such as contrast transcranial Doppler sonography (cTCDS) are popular for assessing a right-to-left shunt (RLS) because of their high sensitivity. In this study, we applied cTCDS to a large patient group with a patent foramen ovale, proved by contrast transesophageal echocardiography (TEE). METHODS One hundred one patients with stroke, in whom a patent RLS had been shown on contrast TEE, were investigated by TCDS of both middle cerebral arteries. Injection of 10 mL of agitated saline was applied without and subsequently with the Valsalva maneuver (VM) at the beginning of the contrast agent injection, and then 10 mL of a galactose-based contrast agent was applied in the same protocol. RESULTS In all patients, cTCDS with the galactose contrast agent showed an RLS when performed with VM, but it showed an RLS in only 59 patients without VM. In contrast, saline showed an RLS in 54 patients with VM and in 20 patients without VM. The differences in diagnostic sensitivity were statistically significant (P < .001). Eighteen patients had only 1 microembolic signal (MES) after galactose injection, whereas others had more. The mean (SD) arrival times of the MES were 9 (6) seconds (range, 1-51 seconds) after galactose injection with VM and 9 (3) seconds (range, 2-20 seconds) after agitated saline with VM. The differences were not significant. CONCLUSIONS Contrast TCDS with VM shows a TEE-proven RLS with 100% sensitivity, but this was not true with galactose application without VM or agitated saline with or without VM. Therefore, use of the galactose contrast agent with VM is strongly recommended for detecting an RLS on TCDS. However, the arrival time and number of MESs detected need to be tested further.
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Affiliation(s)
- Nevzat Uzuner
- Department of Neurology, Osmangazi University School of Medicine, Meselik, 26480 Eskisehir, Turkey.
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Affiliation(s)
- Michael J Landzberg
- Boston Adult Congenital Heart Service, Department of Cardiology, Children's Hospital and Brigham and Women's Hospital, Boston, MA 02115, USA.
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Telman G, Kouperberg E, Sprecher E, Yarnitsky D. The Positions of the Patients in the Diagnosis of Patent Foramen Ovale by Transcranial Doppler. J Neuroimaging 2003. [DOI: 10.1111/j.1552-6569.2003.tb00204.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Anzola GP, Zavarize P, Morandi E, Rozzini L, Parrinello G. Transcranial Doppler and risk of recurrence in patients with stroke and patent foramen ovale. Eur J Neurol 2003; 10:129-35. [PMID: 12603287 DOI: 10.1046/j.1468-1331.2003.00561.x] [Citation(s) in RCA: 72] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The importance of patent foramen ovale (PFO) in stroke of unknown cause remains disputed, as PFO may be present in up to 20% of normal people and in a high proportion of patients with non-vascular disorders. Recent evidence suggests that the amount of right-to-left shunt (RLS) may be the crucial factor for stroke occurrence and relapse. The aim of the study was to assess predictors of recurrence in PFO-related stroke patients with particular emphasis on amount of shunting. Patients less than 61 years old who had been admitted for a PFO-related stroke within the previous 5 years, were re-evaluated on a follow-up visit. The clinical syndrome, residual disability, vascular risk factors and number of relapses as the index event were assessed. RLS sizing was semi-quantitatively performed with saline-enhanced transcranial Doppler (TCD), by assuming a cut-off of more or less 10 bubbles recorded in the cerebral vessels as a criterion to discriminate large versus small shunt, respectively. Thereafter patients were prospectively followed-up for a median time of 23 months. Total follow-up was 61 months. Fifty-nine patients (M/F = 23/36, mean age 43 +/- 13) were studied. Overall there were 23 relapses in 13 patients. The amount of shunting was the only significant independent variable associated with relapse: at the end of the follow-up period the recurrence rate was 0.66 and 8.2% per patient per year in patients with small and large shunt, respectively. This difference was statistically significant (chi2 = 10.39, P = 0.0012; OR 17.05, 95% CI 2.10-755.22). In patients with PFO-related stroke, the amount of RLS as assessed with TCD is the only independent predictor of relapse. PFO sizing is mandatory in patients with PFO.
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Affiliation(s)
- G P Anzola
- Servizio di Neurologia Ospedale S. Orsola FBF--Brescia, Italy.
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Cantais E, Louge P, Suppini A, Foster PP, Palmier B. Right-to-left shunt and risk of decompression illness with cochleovestibular and cerebral symptoms in divers: case control study in 101 consecutive dive accidents. Crit Care Med 2003; 31:84-8. [PMID: 12544998 DOI: 10.1097/00003246-200301000-00013] [Citation(s) in RCA: 75] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE We investigated the role of right-to-left shunt with standardized transcranial Doppler ultrasonography in a large population of divers referred for symptoms of decompression illness. DESIGN Case series compared with a control group. SETTING Military teaching hospital, hyperbaric unit. PATIENTS Patients were 101 consecutive divers with clinical evidence of decompression illness and a control group of 101 healthy divers. INTERVENTION Specification of the type of decompression illness involved and detection/evaluation of right-to-left shunt by standardized transcranial Doppler. The degree of right-to-left shunt was defined as major if the number of high-intensity transient signals in the middle cerebral artery was >20. MEASUREMENTS AND MAIN RESULTS We evaluated the odds ratios by logistic regression analysis with vs. without right-to-left shunt for subjects with cochleovestibular symptoms, cerebral decompression illness, spinal decompression illness, and Caisson sickness. Of the 101 divers presenting with decompression illness, transcranial Doppler detected a right-to-left shunt in 59 (58.4%), whereas control subjects demonstrated a right-to-left shunt in 25 cases (24.8%; odds ratio, 4.3; 95% confidence interval, 2.3-7.8; p=.09). When a right-to-left shunt was detected, the right-to-left shunt was major in 12 of 25 patients in the control group and in 49 of 59 patients in the decompression illness group (odds ratio, 8.7; 95% confidence interval, 4.2-18.0; p<.001). Within the decompression illness group, the proportion of major right-to-left shunt was 24 of 34 (odds ratio, 29.7; 95% confidence interval, 10.0-87.2; p<.0001) in the cochleovestibular subgroup, 13 of 21 (odds ratio, 24.1, 95% confidence interval, 6.8-86.0, p< 0.0001) in the cerebral decompression illness subgroup, ten of 31 (odds ratio, 3.9; 95% confidence interval, 1.5-10.3; p<.01) in the spinal decompression illness subgroup, and two of two (odds ratio, 1.1; 95% confidence interval, 0.2-5.7; p=.9) in the subgroup of divers with Caisson sickness. CONCLUSION Based on our results, we conclude that major right-to-left shunt was associated with an increased incidence of cochleovestibular and cerebral decompression illness, suggesting paradoxical embolism as a potential mechanism.
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Affiliation(s)
- Emmanuel Cantais
- Military Teaching Hospital, Service de Réanimation, Toulon-Naval, France
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Ratanakorn D, Myers LG, Tegeler CH. Detection of air microbubbles in the internal jugular vein after intravenous injection of contrast agent for the diagnosis of patent foramen ovale. JOURNAL OF CLINICAL ULTRASOUND : JCU 2002; 30:506-509. [PMID: 12242741 DOI: 10.1002/jcu.10105] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The use of agitated air and saline, injected intravenously, combined with monitoring of the middle cerebral artery using transcranial Doppler sonography, is an effective method for detecting paradoxic cerebral embolism caused by right-to-left intracardiac shunting. This technique is particularly useful in patients with a patent foramen ovale. In patients without temporal acoustic windows, the method can be modified by using sonographic monitoring of the common carotid artery. Observation of saline-contrast microbubbles in the internal jugular vein during this procedure suggests incompetence of the ipsilateral internal jugular valve. This noninvasive method may thus be useful for studying the competence of the internal jugular valve.
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Affiliation(s)
- Disya Ratanakorn
- Department of Neurology, Wake Forest University School of Medicine, Medical Center Boulevard, Winston-Salem, North Carolina 27157-1078, USA
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Kojo M, Yamada K, Akiyoshi S, Maeda M, Sato K, Izumi T. Reduction of carotid arterial blood flow in ventricular septal defect associated with severe congestive heart failure. J Neuroimaging 2000; 10:241-3. [PMID: 11147409 DOI: 10.1111/jon2000104241] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
After diagnosing abnormality of cardiac and carotid-cerebral circulation in an infant with isolated ventricular septal defect (VSD) associated with severe congestive heart failure, the authors measured the carotid arterial blood flow volume (CABF). At 3 months, the patient was not thriving and had dyspnea because of severe congestive heart failure. The authors measured the VSD size/body surface area (BSA) ratio relative to the predicted value of the left ventricular end-diastolic dimension (%LVEDd), left-to-right shunt ratio (Qp/Qs), and the small stroke volume (SV)/BSA using echocardiography and cardiac catheterization. The mean, maximum, and minimum CABF (mean CABF, maxCABF, and minCABF) among R-R intervals on electrocardiogram were measured by Doppler flowmetry in this patient and 5 healthy age-matched control children. The patient had a large VSD size/BSA ratio (37.9 mm/m2), %LVEDd (164%), and Qp/Qs (3.8), and a small SV/BSA ratio (18 mL/m2). The mean CABF, maxCABF, and minCABF were significantly lower than those of control children (VSD patient vs. controls; 2.7 +/- 0.4 vs. 4.5 +/- 0.6, 6.1 +/- 0.9 vs. 12.0 +/- 2.1, 1.2 +/- 0.2 vs. 1.7 +/- 0.4 mL/sec (mean +/- S.D.)), respectively (p < 0.01). The authors' results showed abnormal cardiac and carotid-cerebral circulation in an infant with large VSD associated with severe congestive heart failure.
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Affiliation(s)
- M Kojo
- Department of Pediatrics, Oita Medical University, School of Medicine, Oita, Japan
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Abstract
Transcranial Doppler ultrasound allows noninvasive monitoring of the large intracranial vessels. Microembolic signals (MES) have been observed under a variety of circumstances, especially in symptomatic carotid stenosis, high-risk cardiac conditions, and surgical procedures (such as carotid endarterectomy and cardiopulmonary bypass surgery). Technical considerations have presented numerous challenges to the interpretation of these signals, many of which appear to represent small emboli traveling in the blood flow. The technical aspects of these MES are discussed and their significance in relation to cerebral ischemia and its prevention are examined in some detail.
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Affiliation(s)
- M Gorman
- Department of Neurology, Wayne State University, Detroit, MI, USA.
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Affiliation(s)
- F J Kirkham
- Neurosciences Unit, Institute of Child Health, The Wolfson Centre, Mecklenburgh Square, London WC1N 2AP, UK.
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Ratanakorn D, Tesh PE, Tegeler CH. A new dynamic method for detection of internal jugular valve incompetence using air contrast ultrasonography. J Neuroimaging 1999; 9:10-4. [PMID: 9922717 DOI: 10.1111/jon19999110] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
The internal jugular (IJ) valve is the only valve between the heart and the brain, preventing venous reflux into the IJ vein. Internal jugular valve competence has been tested by IJ venography. Doppler ultrasonography of the IJ vein and M-mode ultrasonography of the IJ valve, and color flow imaging (CFI) of the IJ vein. However, interpretation of venous Doppler and CFI is difficult, and venography is invasive. The purpose of this study was to evaluate the feasibility of a new dynamic method to test IJ valve competency, and to review the literature regarding the potential clinical importance of this pathophysiology. Ten patients had intravenous injection of agitated air and saline during Valsalva maneuver with B-mode monitoring and CFI of the right IJ vein. Contrast bubbles were clearly identified refluxing into the right IJ vein in 50% of patients. Air contrast studies more often showed IJ valve incompetence than CFI. Bubbles appeared in the IJ vein within 19.2 sec and persisted up to 282 sec. Bubble aggregation was also observed. There was no correlation between positive bubbles and the presence of spontaneous echo contrast on baseline B-mode imaging. Air contrast ultrasound venography (ACUV) is a new noninvasive method to assess competency of the IJ valves. This technique is feasible, appears to be more sensitive than CFI, and adds a new dimension to the study of the venous system in cerebrovascular disease. Potential clinical application includes evaluation of patients with increased central venous pressure, those with morning headaches, and those on positive end-expiratory pressure ventilators.
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Affiliation(s)
- D Ratanakorn
- Department of Neurology, Wake Forest University School of Medicine, Winston-Salem, NC 27157-1078, USA
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