[Neurological deterioration within 30 days of ischemic stroke with spontaneous cervicocranial artery dissection]

Role of Acute Physiotherapy in Bilateral Medial Medullary Infarction: A Case Report

Bilateral medial medullary infarction (BMMI) is a rare stroke syndrome, which frequently has poor clinical outcomes. Reports on physical therapy for BMMI are few because of its poor prognosis. Therefore, this report aims to present a patient who developed BMMI and underwent well-considered rehabilitation. A 67-year-old man presented to our clinic with an acute onset of vomiting and dizziness. Magnetic resonance imaging (MRI) showed no abnormal signal intensity, and the patient was admitted for peripheral dizziness. On day two, he developed quadriplegia, bulbar palsy, and respiratory impairment, such as prolonged apnea. A second MRI revealed a high-intensity lesion in the bilateral medial medulla oblongata. He was diagnosed with BMMI, and rehabilitation treatment was initiated. On day 16, his sputum volume increased, and he could not expectorate effectively due to decreased coughing ability. Therefore, mechanical insufflation-exsufflation (MI-E) was performed to improve his airway clearance. On day 21, he developed aspiration pneumonia (AP), which became severe and led to acute respiratory failure. Nasal airway intubation and oxygen flow of 5 L/minute were initiated. His respiratory function was not seriously aggravated, and recurrent AP was prevented with the application of respiratory physiotherapy procedures, such as postural drainage, in collaboration with other medical staff, and MI-E. On day 60, the patient was transferred to the recovery phase rehabilitation ward. BMMI tends to worsen swallowing disorders progressively and is associated with a high risk of severe AP. Providing physiotherapy in the acute phase is important to reduce the risk of serious illness.

Superficial Temporal Artery-middle Cerebral Artery Anastomosis for Ischemic Stroke due to Dissection of the Intracranial Internal Carotid Artery with Middle Cerebral Artery Extension

A 31-year-old man presented with a sudden-onset headache, right hemiparesis, and dysarthria on day 0 and was diagnosed with acute ischemic stroke due to dissection of the left intracranial internal carotid artery with middle cerebral artery extension. His symptoms progressed despite the institution of treatment, suggesting progression of the dissection. On day 5 after symptom onset, the patient underwent superficial temporal artery-middle cerebral artery anastomosis. No new ischemic stroke event occurred after surgery. Cerebral angiography performed 6 months after surgery showed spontaneous resolution of the dissection. The patient recovered to a modified Rankin Scale score of 2 and was able to return to work. The results of the present case suggest that superficial temporal artery-middle cerebral artery anastomosis is an effective treatment for ischemic stroke due to dissection of the intracranial internal carotid artery with middle cerebral artery extension.

Clinical Characteristics of Cerebellar Infarction Due to Arterial Dissection

Objectives and Background:

Arterial dissection (AD) of the vertebral artery (VA) or its branches may cause ischemic stroke of the posterior circulation. However, clinical and radiological characteristics of patients with AD-related cerebellar infarction (CI) have rarely been reported.

Methods:

Forty-nine patients with CI admitted to our department from April 2008 to March 2015 were identified from our database. After dichotomization into the AD and non-AD group, their demographics and presenting symptoms were compared. Subsequently, a multivariate regression analysis was performed to identify variables that correlated with AD.

Results:

During the 7-year period, 14 and 35 patients were identified in the AD and non-AD group, respectively. The AD group was significantly younger than the non-AD group (55.0 ± 16.3 vs. 69.7 ± 10.7 years, P = 0.001) and was also more likely to experience acute pain at onset (86% vs. 17%, P < 0.001). Using a multivariate regression analysis, these two variables and the male sex were found to correlate with AD. AD was located in extracranial VA (n = 3); intracranial VA (n = 8); posterior inferior cerebellar artery (PICA) (n = 3); and superior cerebellar artery (n = 1). Identification of AD was delayed in one patient with an extracranial VA and one patient with a PICA dissection.

Conclusions:

AD was responsible for approximately 30% of CI in our cohort. Pain at onset may be a useful symptom to identify patients with AD-related CI. While intracranial VA was the most common location of AD, physicians should be aware of the possibility of extracranial VA or PICA dissection in patients with seemingly unremarkable radiological findings.