1/48. hypertensive encephalopathy as a complication of hyperdynamic therapy for vasospasm: report of two cases.OBJECTIVE AND IMPORTANCE: After developing subarachnoid hemorrhage, patients may deteriorate from a variety of well-known causes, including rebleeding, hydrocephalus, and vasospasm. Many patients now undergo empirical hyperdynamic vasospasm therapy with hypervolemia, induced hypertension, and nimodipine. CLINICAL PRESENTATION: We report two cases of iatrogenic hypertensive encephalopathy occurring during hyperdynamic therapy for cerebral vasospasm after subarachnoid hemorrhage. hypertensive encephalopathy is a syndrome of rapidly evolving generalized or focal cerebral symptoms occurring in the setting of severe hypertension, which is reversible with antihypertensive therapy. INTERVENTION: The syndrome can be diagnosed in the appropriate clinical setting with computed tomographic or magnetic resonance imaging that demonstrates characteristic findings. In both cases, decreasing the blood pressure resulted in neurological improvement. CONCLUSION: In the setting of induced hypertensive/hypervolemic therapy for vasospasm, hypertensive encephalopathy should be considered as a potentially reversible cause of delayed neurological decline.- - - - - - - - - - ranking = 1keywords = pressure (Clic here for more details about this article) |
2/48. The effect of hallux valgus correction on chronic plantar ulceration. A case report.Plantar pressure-measurement technology may provide the clinician with valuable objective information for monitoring the effects of therapeutic intervention on the foot. The use of this technology is described in the preoperative and postoperative assessment of a patient undergoing hallux valgus surgery for the treatment of a chronic neuropathic skin ulcer over the medioplantar aspect of her first metatarsophalangeal joint.- - - - - - - - - - ranking = 1keywords = pressure (Clic here for more details about this article) |
3/48. Successful Wallstent implantation for extensive iatrogenic renal artery dissection in a patient with fibromuscular dysplasia.PURPOSE: To describe a case of renal artery stenosis with fibromuscular dysplasia (FMD) and extensive iatrogenic dissection treated with Wallstent implantation. methods AND RESULTS: An 83-year-old woman with a history of coronary artery disease and hypertension presented at another facility with exertional angina and poorly controlled hypertension. Renal arteriography uncovered a critical right renal artery stenosis with severe FMD. However, angioplasty resulted in extensive dissection of the renal artery, for which the patient was referred to our institution. The renal artery was recanalized via the left brachial approach with restoration of flow using a Wallstent and a Palmaz stent. The patient's blood pressure was controllable after this procedure, and follow-up duplex imaging with flow velocities at 6 months showed patent right renal artery stents. CONCLUSIONS: Owing to its length and flexibility, the Wallstent endoprosthesis was a useful treatment modality in this case of extensive renal artery dissection.- - - - - - - - - - ranking = 1keywords = pressure (Clic here for more details about this article) |
4/48. Successful completion of endoluminal repair of an abdominal aortic aneurysm after intraoperative iatrogenic rupture of the aneurysm.PURPOSE: A method of achieving successful completion of endoluminal repair of an abdominal aortic aneurysm (AAA) in the presence of intraoperative iatrogenic rupture of the aneurysm is reported. methods: An 83-year-old woman with an AAA that was 7 cm in diameter was treated electively by means of endoluminal repair with a Vanguard bifurcated prosthesis (boston Scientific, Natick, Mass). No difficulty was experienced with the introduction of the delivery catheter, despite extreme angulation in the aneurysm. An acute episode of hypotension prompted an aortogram to be performed. Extravasation of contrast outside the aneurysm sac was demonstrated. The balloon on the delivery catheter was immediately advanced to the suprarenal aorta and inflated. hypotension was reversed, and hemodynamic stability was restored, thus enabling deployment of the prosthesis to proceed and the repair to be completed by means of the endoluminal method. RESULTS: The patient's blood pressure remained stable after deflation of the balloon, allowing a postprocedure aortogram to be performed. Exclusion of the aneurysm sac was demonstrated. Exclusion of the aneurysm sac from the circulation and a large retroperitoneal hematoma were confirmed by means of a postoperative contrast computed tomography scan. convalescence was complicated by acute renal failure, pneumonia, and prolonged ileus. The patient remained well and active at the follow-up examination 6 months after operation. CONCLUSION: Iatrogenic perforation of an AAA during endoluminal repair may be treated by endovascular means and does not necessarily require conversion to open repair, although this may be the safest option.- - - - - - - - - - ranking = 1keywords = pressure (Clic here for more details about this article) |
5/48. Iaterogenic injuries during retrograde delivery of cardioplegia.During last eight years, retrograde delivery of cardioplegia was used on a regular basis, utilizing a DLP INC (Grand Rapids, MI) or a research Medical INC (Salt Lake City UT) delivery systems, in almost an equal number of patients. This method resulted in a high pressure rupture, or perforation of the coronary sinus, its radicals or the right ventricle (RV) in 0.06% (5/7886) of patients. Intraoperative diagnosis of these injuries were confirmed on abnormal haemodynamic tracings and trans oesophageal echocardiography (TOE), and appearance of cardiac contusion or leakage of cardioplegia. A low incidence of these iaterogenic injuries may be attributed to: (1) a regular use of this method and (2) use of TOE guided manipulations in select high risk and reoperative patients. Repair of these injuries, as described, resulted in salvage of 4/5 (80%) patients.- - - - - - - - - - ranking = 1keywords = pressure (Clic here for more details about this article) |
6/48. vertebral artery pseudoaneurysm complicating posterior C1-2 transarticular screw fixation: case report.BACKGROUND: vertebral artery injury during posterior C1-2 transarticular screw fixation occurs in approximately 3% of patients and may remain asymptomatic or result in arteriovenous fistulae, occlusion, narrowing, or dissection of the vertebral artery, and lead to transient ischemic attacks, stroke, or death. CASE DESCRIPTION: This is the first report of a pseudoaneurysm resulting from damage to the vertebral artery during the procedure. This 31-year-old male underwent posterior C1-2 transarticular screw fixation for unstable os odontoideum. Injury to the left vertebral artery occurred while the hole for the left screw was being drilled. Temporary control of bleeding with local pressure was followed by immediate postoperative angiography that revealed a left vertebral artery pseudoaneurysm. Although the patient remained asymptomatic, therapeutic anticoagulation was instituted 6 hours postoperatively. Increasing size of the pseudoaneurysm was noted on routine follow-up angiography 4 weeks later. Endovascular occlusion of the pseudoaneurysm and left vertebral artery, with preservation of vertebrobasilar flow through the right vertebral artery, was accomplished without neurological consequence. CONCLUSIONS: vertebral artery pseudoaneurysm complicating posterior C1-2 transarticular screw fixation may be effectively treated with endovascular approaches.- - - - - - - - - - ranking = 1keywords = pressure (Clic here for more details about this article) |
7/48. Iatrogenic hydromediastinum simulating aortic laceration.Widening of the mediastinum after blunt, deceleration injuries to the chest in three patients suggested thoracic aortic lacerations. In each patient, the aorta was found to be intact and the iatrogenic hydromediastinum was caused by malpositioned central venous pressure lines. The radiographic appearance of the central venous pressure catheter is illustrated and clinical characteristics of the malpositioned catheter are discussed.- - - - - - - - - - ranking = 2keywords = pressure (Clic here for more details about this article) |
8/48. Reversed portal vein pulsatility on Doppler ultrasound secondary to an iatrogenic mediastinal haematoma.The Doppler ultrasound pattern of reversed pulsatile flow (RPF) of the portal vein (PV) is strongly associated with high atrial pressure. Tricuspid regurgitation is considered to be the main cause of RPF in patients with chronic heart disease, but the precise pathomechanism of this PV flow pattern has not yet been resolved. We describe for the first time a RPF of the PV in a young patient with a mediastinal haematoma after inadvertent puncture of the subclavian artery. In this patient, transcutaneous echocardiography demonstrated normal valves without any tricuspid regurgitation as well as normal diameters of the cardiac cavities. The RPF of the PV in this patient resolved spontaneously within 7 days. An increased hepatic outflow resistance with transmission of hepatic artery pulsations across arterioportal communications seems the most likely pathomechanism to explain our finding.- - - - - - - - - - ranking = 1keywords = pressure (Clic here for more details about this article) |
9/48. Unexpected hypoglycemia in a critically ill patient.Administration of the wrong medication is a serious and understudied problem. Because physicians are not directly involved in the drug administration process, they tend to overlook the possibility of adverse drug events and medication errors in their differential diagnoses of patient illnesses or acute deterioration. This article analyzes the case of a patient with iatrogenic hypoglycemia due to administration of the wrong medication: insulin instead of heparin was used to flush the patient's arterial line. In addition to assessing the results of the institution's "root-cause analysis" of the factors contributing to this particular adverse event and the institution's response, this article reviews the literature on preventing medication errors. Key strategies that might have been helpful in this case include using checklists for common emergency conditions (such as altered level of consciousness) and automated paging for "panic laboratory values," as well as instituting protocols for medication administration. Changing the system of administering medications by bar coding drugs, with checks of the medication, patient, and provider, could have prevented this accident. Finally, organizations need to strive for a "culture of safety" by providing opportunities to discuss errors and adverse events in constructive, supportive environments and by resisting pressure to find a scapegoat.- - - - - - - - - - ranking = 1keywords = pressure (Clic here for more details about this article) |
10/48. Giant high-flow renal arteriovenous fistula treated by percutaneous embolization.We report the case of a giant renal arteriovenous fistula after renal biopsy in a 30-year-old man with hematuria and hypertension. We performed percutaneous endovascular embolization using macrocoils to exclude the fistula. The patient made an uneventful recovery with no further hematuria and progressive reduction of blood pressure. Follow-up by digital subtraction angiography (DSA) at 6 months showed complete occlusion of the fistula with no evidence of renal parenchymal infarction. Although giant renal arteriovenous fistulas are generally treated by nephrectomy, this case shows that embolization is a reasonable alternative to surgery.- - - - - - - - - - ranking = 1keywords = pressure (Clic here for more details about this article) |
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