controlled hypotension

..Safe application of this technique requires knowledge of the physiology of hemorrhagic shock and close intraoperative monitoring to avoid vasoconstriction and end-organ ischemia...

..b>Controlled hypotension (also referred to as deliberate or induced hypotension), defined as a reduction of systolic blood pressure ..

..To compare coagulation, blood loss, and transfusion requirements between patients receiving nicardipine and nitroprusside for deliberate hypotension during idiopathic scoliosis repair...

..and desflurane in achieving hemodynamic stability in spinal procedures using moderate levels of controlled hypotension. After obtaining ethics committee approval and written informed consent, 32 American Surgical Association ..

..CONCLUSION: For general anaesthesia in endonasal sinus surgery Sodium Nitroprusside is no longer recommended. Instead a TIVA using Propofol and Remifentanil should be used...

We used controlled hypotension to obtain a bloodless cavity during middle ear surgery under an optical microscope...

STUDY OBJECTIVES To determine if moderate controlled hypotension can improve the dryness of the surgical field in endoscopic sinus surgery.

To determine whether remifentanil, combined with propofol, could induce controlled hypotension, reduce middle ear blood flow (MEBF) measured by laser-Doppler flowmetry, provide a "dry" operative field, and could be compared with ..

..The study was designed to assess serum concentration of atrial and brain natriuretic peptide in patients undergoing endonasal sinus surgery receiving controlled hypotension.

To determine in children whether remifentanil combined with sevoflurane, could induce controlled hypotension, reduce middle ear blood flow (MEBF) measured by laser-Doppler, and provide a satisfactory operative field.

..whether clonidine lessened the requirements for isoflurane, fentanyl, and labetalol to provide controlled hypotension in children who underwent oromaxillofacial surgery...

For half a century, controlled hypotension has been used to reduce bleeding and the need for blood transfusions, and provide a satisfactory bloodless surgical field...

The reduced oxygen content and perfusion pressure during acute normovolemic hemodilution (ANH) and controlled hypotension (CH) raise concerns about hypoperfusion and ischemic injury to the brain...

..We applied controlled hypotension and a minimal inflation pressure (CHAMIP) technique to provide a bloodless surgical field...

..The aim of this study was to evaluate the accuracy of radial pressure monitoring during controlled hypotension achieved with profound arterial vasodilation...

..This study was designed to investigate the combined effect of acupoint ES and different infusion rates of nitroglycerin on controlled hypotension.

..There is a more frequent incidence of hypotension and vasoconstrictor administration despite identical doses of intrathecally administered local anesthetic...

..This study evaluated effectiveness of hypotensive epidural anesthesia in decreasing blood loss, operation and extubation time, opiates use and stay in intensive care unit...

b>Controlled hypotension (CH) is an established method to reduce intraoperative bleeding. The aim of the study was to investigate the influence of CH induced by sodium nitroprusside (SN) or esmolol on hepatocellular integrity.

To evaluate the effects of controlled hypotension combined with hemodilution on human middle cerebral artery flow velocity (Vmca) by transcranial Doppler ultrasonography.

..might provide a simple and effective intervention to increase oxygen tension in tissues during controlled hypotension. To test this hypothesis, the influence of hyperoxic ventilation (100% O2) on skeletal muscle oxygen ..

..In Group H, sodium nitroprusside was infused to maintain controlled hypotension with MAP around 60 mmHg...

BACKGROUND: Drug-induced controlled hypotension (CH) combined with acute normovolemic hemodilution (ANH) is being widely used for blood conservation in surgical patients...

..CONCLUSIONS: These results suggest that PGE1 may prevent postoperative decrease of urine volume, but it may not affect postoperative renal function...

..To evaluate the effect of induced hypotension with isoflurane or prostaglandin E(1) (PGE(1)) on cytokine responses to surgery...

..intraoperative and postoperative blood salvage, pharmacologic manipulation of the coagulation cascade, and controlled hypotension. Undoubtedly, many of these techniques are effective alone; however, the goal of performing major ..

..To explore the results of bleeding control in sinonasal surgery...

..Fifty-two patients of physical health state 1-2 according to ASA were examined: for 32 the controlled hypotension (Group H) was applied, 20 patients underwent operations in normotension (Group N)...

..To compare hypotensive epidural anesthesia (HEA) and hypotensive total intravenous anesthesia (HTIVA) with propofol and remifentanil on blood loss during primary total hip replacement...

..This indicates that beneficial effects of isoflurane are most likely attributable to direct effects at the neuronal level as opposed to indirect effects resulting from interactions with profound hypotension...

..To determine whether nitroglycerin or trimethaphan alters pressor response to intravenous (i.v.) ephedrine...

..capacity and perfusion pressure during the combination of acute normovolaemic haemodilution (ANH) and controlled hypotension (CH) raises concerns of hypoperfusion and ischaemic injury to the brain...

..This paper will review the current status of these therapies in the orthopedic surgical patient...

..In the absence of tumor, systemic infection, or gross wound contamination, these modalities should be considered when a spinal procedure is planned in which homologous blood may be required...

..The aim was to examine the effects of isoflurane and sevoflurane at increasing minimum alveolar concentrations (MAC) on CBF, during controlled hypotension.

..This is a prospective study to measure the inferior vena caval pressure of 20 patients in different positions and different states of blood pressure...

..To compare the effects of esmolol and remifentanil, used as adjuncts for induced hypotension on surgical conditions and short-term cognitive functions, during tympanoplasty...

..To investigate the safety, efficacy, impact on positioning, and neurocognitive outcomes of 3 conceptually different methods of avoiding the "windsock" effect during thoracic stent-graft placement...

b>Controlled hypotension is frequently used for obtaining better exposure during tympanoplasty...

..The authors conclude that spinal surgery is possible in Jehovah's Witnesses without transfusion and that operative technique is the single most important determinant of blood loss...

..The aim of this study was to investigate the influence of nitroglycerin- and nicardipine-induced hypotension on regional cerebral oxygen saturation (rSO(2)) and postoperative cognitive function in patients undergoing orthognathic surgery...

....

OBJECTIVE: To evaluate the effects of acute normovolemic hemodilution (ANH) combined with controlled hypotension on reducing heterogeneous transfusion and safety during liver tumorectomy...

..This randomized, double-blind, placebo-controlled study was designed to assess the effect of perioperatively administered i.v. magnesium sulphate as a technique of hypotensive anaesthesia...

BACKGROUND: Controlled hypotension (CH) is used to limit intraoperative blood loss and decrease the need for homologous transfusions...

..Nicardipine, but not nitroglycerin or prostaglandin E(1), attenuated cerebral pressure autoregulation in normal adult patients during propofol-fentanyl anesthesia...

..A colloid-based fluid regime (HES 130/0.4) used for haemodilution may preserve renal function to a greater extent than a crystalloid-based regime (0.9% saline)...

..The average hemoglobin on the seventh postoperative day was similar in both groups; 11.5 g/dl in the current series compared to 11.1 g/dl in the 1982 series...

..05). CONCLUSION: There was pronounced reduction in blood loss during orthognathic operations done under hypotensive anaesthesia compared with those done under normotensive anaesthesia...

..SUMMARY OF BACKGROUND DATA: Despite the general acceptance of controlled hypotension as effective in reducing blood loss during spinal surgery, the changes of blood flow that occur at the ..

....

..The current study investigated the propofol-sparing effects of the concomitant administration of the alpha(2)-adrenergic agonist, dexmedetomidine, during spinal fusion surgery in adolescents...

To examine brain damage following different degrees of acute normovolemic hemodilution combined with controlled hypotension (ANH-CH) by neuronal morphological analysis and investigate the expression of nuclear factor-kappa B (NF-kappaB) ..

..CGRP may be the more suitable for clinical use because of its short half life, its capability to achieve controlled hypotension and the relatively few side effects associated with its use.

Sixteen patients (13-38 yr) undergoing spinal fusion for scoliosis under controlled hypotension were studied to determine the haemodynamic and neuroendocrine responses to IV dihydralazine (1.0 mg.kg-1) followed by 0...

Because it is necessary to maintain controlled hypotension during middle ear surgery in order to avoid bleeding and as it is known that cochlear blood flow (CBF) is related to blood pressure (BP), it is useful to evaluate CBF ..

..in anesthetized adolescent children undergoing scoliosis surgery in the prone position, with or without controlled hypotension. Eleven children undergoing surgery for idiopathic scoliosis were enrolled in this study...

..The aim of our research was to evaluate the influence of general anesthesia with controlled nitroglycerin-induced hypotension on splanchnic mucosal perfusion using gastric tonometry...

..and postoperative blood salvage Topical or systemic pharmacologic interventions to accelerate haemostasis Controlled hypotension Efficacy and indication of the different measures always depend on the individual circumstances of the ..

..for the use of clevidipine included control of perioperative hypertension in 4 patients, to provide controlled hypotension during orthopedic surgical procedures in 5 patients, and to improve distal perfusion during a toe-to-..

..The intraoperative course of these patients was uneventful. Controlled hypotension, rapid recovery and uneventful postoperative period were achieved with this technique...

..Cerebral ischemia is one of the problems of great interest at present, with limited therapeutic measures. Hypothermia, one of the more efficient measures, together with neuroprotector pharmaceuticals, could be a valid alternative...

..The experiment was conducted on 48 rats anesthetized with ethylurethane, subjected to controlled hypotension (under 35-40 mmHg) for 60 min...

..However, conclusive effects of permissive hypercapnia on cerebral ischemia are still unknown...

..To investigate the effects of ulinastatin on lung injury in hemorrhagic shock rats...

..Hence, we investigated whether the effect of an ACE inhibitor on the lower limit of CBF autoregulation is mediated by the potentiation of bradykinin-mediated vasodilatation...

..study was to compare three types of general anesthesia for functional endoscopic sinus surgery (ESS) with controlled hypotension measuring the quality of visibility of the surgical field and the blood loss during the operation...

..the intraoperative arteriographyc monitoritation showed a spontaneous closure of the DAVF after induced controlled hypotension, resulting in complete cure...

....

..on characteristics of plethysmographic waveform in 33 adult patients undergoing general anesthesia with controlled hypotension. The delta-down and ventilatory systolic variation components were increased significantly with decreases ..

..Patients with a suspected TAR are preferably managed by controlled hypotension. TAR can be diagnosed by spiral CT angiography, additional angiography is not needed...

..The aim of this paper is to present diagnostical and therapeutical concepts proved to be medically effective and economically acceptable and to review the international literature...

..In addition, controlled hypotension and asystole were established with administration of adenosine to facilitate precise device deployment...

..been used safely in hospitalized children and newborns for the management of hypertensive crisis, and for controlled hypotension during surgery. CCAs are a class of antihypertensives that are safe and effective in pediatric patients...

..Available treatments are catheter-based intervention, external ligation under controlled hypotension, or surgical closure with the patient under cardiopulmonary bypass...

To explore the effect of hemorrhage on cell apoptosis in the hippocampal CA1 region of rats under controlled hypotension (CH).

..This study examines the effect of age in two models of transient ischemia a forebrain and a focal model in male Wistar rats...

..b>Controlled hypotension was used for all cases...

b>Controlled hypotension is useful for accurate deployment of an aortic endograft. We describe the use of rapid ventricular pacing during thoracic aortic stent graft deployment...

..On the other hand, there is a great variety of clinical cases in which not only the volume must be considered, but also the degree of ptosis, the quality of the skin, the age, and, most importantly, the wishes of the patients...

..patients) was to improve the control of bleeding during functional endoscopic sinusal surgery by means of controlled hypotension achieved through either total intravenous anaesthesia using remifentanyl and propofol (27 patients), or ..

Dexmedetomidine is a preferred anesthetic agent in otological surgery because it provides controlled hypotension and good surgical field visibility...

..of blood loss in systemic hypotension are between "deliberate hypotension" (synonym "controlled hypotension", used intraoperatively), "delayed resuscitation" (where the hypotensive period is ..

..To analyze the death-related risk factors of type B aortic dissection treated medically during the acute phase (symptoms presenting within 14 d), and to determine the predictors of surgical indications for acute type B aortic dissection...

..Determine the usefulness of endovascular surgery for repair of aortic lesions late after open surgical repair...

Induced controlled hypotension is a standard method aimed at decreasing intraoperative bleeding and achieving good operative field conditions...

Attempts at reducing exposure to allogeneic transfusions, using blood conservation techniques such as controlled hypotension and normovolemic hemodilution, have met with mixed results and are not always practical in small infants...

..unilateral convex segmental vessels, and each had a component of hyperkyphosis, as well as intraoperative controlled hypotension. All four patients showed marked improvement of motor weakness with time...

..of the use of fenestrated clip and conventional clip (especially for aneurysms projected posteriorly), controlled hypotension (systolic pressure of around 100 mmHg), temporary clipping (trapping) procedures of usually less than 15 ..

..normovolemic hemodilution, the use of a cell-saver system, administration of high-dose tranexamic acid, controlled hypotension, avoidance of low body temperature, simplification of the surgery, and lower blood dilution during ..

..Protocol violations were sparse (n = 5). Uncontrolled hypotension occurred in 36% (28 of 77) of all patients, and the desired systolic blood pressure range was achieved in 46% (11 of 24) of the EVAR patients...

..Whether anti-C5 could serve as a volume-sparing adjunct that improves responsiveness to fluid administration in humans deserves further study...

..Neither drug affected surgical outcome or the incidence of vasospasm. These results suggest that PGE1 may be preferable to trimethaphan for hypotensive anaesthesia in cerebral aneurysm surgery because LCBF is maintained...

..This hypothesis-generating observational pilot study details the clinical outcomes in patients with aortic stenosis undergoing hypotensive epidural anesthesia for total hip replacement...

To determine whether magnesium sulphate could induce controlled hypotension, reduce choroidal blood flow, provide a 'dry' operative field and could be compared with sodium nitroprusside in the recently raised issue of the use of ..

..Systemic arterial hypotension may facilitate the embolisation process and various agents, including glyceryl trinitrate and sodium nitroprusside, have been employed for this purpose...

..05 mg/kg/hr intraarterially, n = 6). Trimethaphan was used to produce controlled hypotension to match the approximately 10% decrease in mean arterial blood pressure that was observed during ..

..and sub-anaesthetic doses of intravenous ketamine by infusion (Australia); use of cell-saver (81%), controlled hypotension (77%) and antifibrinolytic agents (74%) (intravenous aprotinin [59%] or tranexamic acid [44%]); and ..

..The T-Line Tensymeter represents a noninvasive alternative to an arterial line in cases when arterial blood sampling is not required...