Not-so-minimal for minimally invasive surgery

Sub?macular hemorrhage poses a potential threat to vision if left untreated. The preferred surgical technique to clear sub?macular hemorrhage includes vitrectomy followed by retinotomy using a 41G needle with subsequent injection of recombinant tissue plasminogen activator (r?tPA) followed by air/SF6 injection into the sub?retinal space. A malleable nature, increased resistance, and the cost of the 41G needle limit its use. We evaluated the safety and efficacy of a 26G needle for retinotomy as a supplement for the 41G needle in a series of six subjects with sub?macular hemorrhage. A slight modification in the procedure was done by injecting air into the sub?retinal space prior to the r?tPA injection. We found that our technique of using the 26G needle for retinotomy is safe and effective due to its stable nature and self?sealing properties. An air injection prior to r?tPA allows for increased bioavailability of the drug by preventing efflux due to its tamponading effect.

Frequency of stroke patients qualified for recombinant tissue plasminogen activator (r-TPA) injection and limitations in Zahedan 2016

Background: Stroke is one of the common causes of mortality and disability. By introducing r-TPA into the global drug market and its effect on the patients’ prognosis, using this drug is recommended in all patients with ischemic stroke who visited less than 4.5 hours after stroke and do not have contraindications. The aim of this study was to investigate the frequency of stroke patients qualified for recombinant tissue plasminogen activator (r-TPA) and its limtations.Methods: In this descriptive cross-sectional study, 244 patients examined with stroke admitted to the Neurology Department of Zahedan city hospital in 2016. Information form were completed with demographic data, transmission method, referral time, CT scan preparation time, and the response of the patients' trials, and finally the data were inserted in SPSS.16 software and analysed by statistical methods.Results: Out of all patients with ischemic stroke, 28 (11.5%) patients had contraindication to receive drug. Of 216 remain patients, 201 patients (93.1%) had no possibility to receive r-TPA due to the loss of golden time and only 15 patients (6.9%) had possibility to receive drug because of visited 4.5 hours before the beginning of symptoms. Of them, 3 (20%) patients due to delay in CT scan and test results, had no possibility to receive r-TPA. In summary, of all patients with inclusion criteria, only 12 (5.5%) patients could use the r-TPA in this study.Conclusions: The most important barrier to using r-TPA has been the loss of golden time and training to raise awareness of the society can lead to early referral from the onset of stroke symptoms.

The Safety and Efficacy of Recombinant Tissue Plasminogen Activator (r-tPA) in Ischemic Stroke Patients in a Community-based Hospital

BACKGROUND: The results of the National Institute of Neurological Disorders and Stroke (NINDS) r-tPA Stroke Trial generated considerable hope, but also concerns about whether their results could be replicated in clinical practice. We investigated whether r-tPA infusion could be administered in a community-based hospital, safely and effectively. METHODS: We analyzed, retrospectively, the data of 33 patients having suffered acute ischemic strokes and treated with intravenous r-tPA from February 2003 to December 2006. Safety was evaluated by intracranial hemorrhage, symptomatic intracranial hemorrhage, and mortality. Clinical neurological status was measured by National Institutes of Health Stroke Scale (NIHSS) at baseline, 24 hours, and 7 days after r-tPA treatment. Efficacy was assessed by the response rate of r-tPA using an improvement in the NIHSS by 4 or more points at 24 hours after treatment and the long-term out-come measured with the modified Rankin Scale (mRS) at 3 months after stroke. RESULTS: The median NIHSS was 18. Mean onset to needle time was 140+/-30 minutes. Of the 33 patients, 10 had intracranial hemorrhage and 2 had symptomatic intracranial hemorrhage. No deaths occurred. Fifteen patients showed improvement in their NIHSS by 4 or more points at 24 hours after r-tPA. On the mRS, 12 patients had a good outcome at 3 months. More specifically, 9 patients had no or minimal symptoms, 7 patients had mild to moderate disability, 10 patients had severe disability and 7 patients died. CONCLUSION: The safety andrd efficacy of administering intravenous r-tPA for acute ischemic stroke in a community-based hospital mirror the results of the NINDS stroke trial.

The Safety and Efficacy of Recombinant Tissue Plasminogen Activator (r-tPA) in Ischemic Stroke Patients in a Community-based Hospital

BACKGROUND: The results of the National Institute of Neurological Disorders and Stroke (NINDS) r-tPA Stroke Trial generated considerable hope, but also concerns about whether their results could be replicated in clinical practice. We investigated whether r-tPA infusion could be administered in a community-based hospital, safely and effectively. METHODS: We analyzed, retrospectively, the data of 33 patients having suffered acute ischemic strokes and treated with intravenous r-tPA from February 2003 to December 2006. Safety was evaluated by intracranial hemorrhage, symptomatic intracranial hemorrhage, and mortality. Clinical neurological status was measured by National Institutes of Health Stroke Scale (NIHSS) at baseline, 24 hours, and 7 days after r-tPA treatment. Efficacy was assessed by the response rate of r-tPA using an improvement in the NIHSS by 4 or more points at 24 hours after treatment and the long-term out-come measured with the modified Rankin Scale (mRS) at 3 months after stroke. RESULTS: The median NIHSS was 18. Mean onset to needle time was 140+/-30 minutes. Of the 33 patients, 10 had intracranial hemorrhage and 2 had symptomatic intracranial hemorrhage. No deaths occurred. Fifteen patients showed improvement in their NIHSS by 4 or more points at 24 hours after r-tPA. On the mRS, 12 patients had a good outcome at 3 months. More specifically, 9 patients had no or minimal symptoms, 7 patients had mild to moderate disability, 10 patients had severe disability and 7 patients died. CONCLUSION: The safety andrd efficacy of administering intravenous r-tPA for acute ischemic stroke in a community-based hospital mirror the results of the NINDS stroke trial.

Discussion for the Problems in Intravenous Thrombolysis with Recombinant Tissue Plasminogen Activator in Acute Cerebral Infarction / 中国康复理论与实践

@#This paper points out the importance of intravenous thrombolysis with recombinant tissue plasminogen activator(r-tPA)according to the international guidelines in acute ischemic stroke.Some practical problems,such as the lower rate of thrombolysis for ischemic stroke,the price of r-tPA being too expensive to clinical using,the dosage of r-tPA in Chinese being not clear,the curative effect being not so good,and traditional Chinese medicine (TCM) applied in intravenous thrombolysis,and so on,should be further discussed.

Evaluation for Prognosis and Complication at Violation of Treatment with rtTA in Acute Ischemic Stroke

PURPOSE: In many other countries, based on research, recombinant tissue plasminogen activator (r-tPA) has been approved for the treatment of acute ischemic strokes. However, in Korea, little research has been done till now, in spite of using r-tPA widely. We sought to assess the feasibility and the efficacy of treatment and to evaluate the prognosis and complications at the violation of using r-tPA. Our study was compared with other previous studies. METHODS: A retrospective review is presented of 25 the cases of patients with acute ischemic stroke treated with rtPA according to the National Institutes of Neurological Disorders and Strokes (NINDS) protocol. We classified the groups by protocol violation (time, blood pressure, and computed tomography). We then analyzed neurologic outcomes by using the National Institutes of Health Strokes Scale (NIHSS) and complications based on whether or not intracerebral hemorrhage (ICH) had occurred. RESULTS: Of the 25 patients (mean age: 57 males: 19), 6 had time violation (onset time > 180 min), 4 had blood-pressure violation (systolic BP > 185 mmHg), 5 had CT violation (low density at initial CT). The NIHSS score improved in 64% of all patients after 24 hours. However, improvement was lower in the case of deviation present than it was in the case of deviation absent (time, blood pressure, and CT, respectively, 20%, 50%, and 40%; p-value respectively 0.0274, 0.8350, and 0.4125). ICH occurred in 6 cases, but in cases of deviation present, ICH occurred at a greater frequency. CONCLUSION: Our safety and feasibility of outcome compared favorably with NINDS and other previous studies. In addition, we confirmed that the presence of protocol deviation was associated a poor outcome.