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*  The use of hyperventilation therapy after traumatic brain injury in Europe: an analysis of the BrainIT database | SpringerLink
To assess the use of hyperventilation and the adherence to Brain Trauma Foundation-Guidelines (BTF-G) after traumatic brain ... Oertel M, Kelly DF, Lee JH, Glenn TC, Vespa PM, Martin NA (2002) Can hyperventilation improve cerebral microcirculation in ... Stringer WA, Hasso AN, Thompson JR, Hinshaw DB, Jordan KG (1993) Hyperventilation-induced cerebral ischemia in patients with ... Lundberg N, Kjallquist A, Bien C (1959) Reduction of increased intracranial pressure by hyperventilation. A therapeutic aid in ...
  https://link.springer.com/article/10.1007%2Fs00134-008-1123-7
*  Neuroanesthesia Flashcards by Tulip 549 | Brainscape
In hyperventilation, you want to maintain adequate cerebral perfusion pressure while preventing increased intracranial pressure ... An increase in plasma osmolality has been reported to produce cerebral vasodilation, thereby increasing ICP. In addition, the ... Both of these effects tend to be offset by the increase in MAP that occurs as a result of increased preload stemming from the ... Cerebral autoregulation refers to the brain's ability to maintain cerebral blood flow relatively constant (40-60 ml/100gm/min) ...
  https://www.brainscape.com/flashcards/neuroanesthesia-1676013/packs/1922944
*  Clinical Hemorheology and Microcirculation - Volume 35, issue 1-2 - Journals - IOS Press
Keywords: Hyperventilation, cerebral perfusion, cerebral blood flow, hemorheology Citation: Clinical Hemorheology and ... controlled periods of cerebral perfusion pressure increases and decreases were utilized. After each period, blood samples were ... Beneficial effects due to increasing blood and plasma viscosity Authors: Martini, J. , Carpentier, B. , Chávez Negrete, A. , ... The gradient is …abolished if the RBC in the perfusate are rigid; fibrinogen infusions, and thus increases of both plasma ...
  https://content.iospress.com/journals/clinical-hemorheology-and-microcirculation/35/1-2
*  Outcomes following prehospital airway management in severe traumatic brain injury
... results in cerebral vasoconstriction with reduction in cerebral perfusion. A correlation was noted between hyperventilation and ... With high failure rates associated with this procedure (37.5%), as noted by Wang et al.,[15] there is an increased risk of ... which would impede venous drainage from the cerebral vasculature, resulting in decreased cerebral blood flow and a rise in ... Murray et al., [5] demonstrated that patients with severe TBI who were intubated in the prehospital setting had increased ...
  http://www.scielo.org.za/scielo.php?script=sci_arttext&pid=S0256-95742013000900024&lng=pt&nrm=iso&tlng=pt
*  Traumatic brain injury: The South African landscape
Hyperventilation causes hypocarbia, which induces cerebral vasoconstriction. Increased intrathoracic pressure decreases venous ... SA needs improved and current TBI epidemiological data to develop protocols appropriate to our unique set of conditions, such ... The loss of autoregulation means that the injured brain is more prone to ischaemia because cerebral perfusion pressure is ... Within the skull cavity, raised intracranial pressure from cerebral oedema or an expanding space-occupying lesion are the major ...
  http://www.scielo.org.za/scielo.php?script=sci_arttext&pid=S0256-95742013000900015&lng=pt&nrm=iso&tlng=pt
*  l-Arginine Improves Diminished Cerebral CO2 Reactivity in Patients | Stroke
TABLE 3. Percent of Decrease of Baseline Mean Flow Velocity (MFV) During Hyperventilation as Well as Increase in Percent During ... l-Arginine Improves Diminished Cerebral CO2 Reactivity in Patients. C. Zimmermann, R.L. Haberl ... l-Arginine infusion increases basal but not activated cerebral blood flow in humans. J Cereb Blood Flow Metab. 1997; 17: 309- ... Although it is known that l-arginine itself can temporarily increase cerebral blood flow,10,11 it is not clear whether it ...
  http://stroke.ahajournals.org/content/34/3/643
*  Chinese Medical Journal
Hyperventilation under propofol anesthesia should be cautiously performed in neurosurgery to maintain an improved balance ... cerebral oxygen extraction ratio (O 2 ER), mean arterial blood pressure (MAP), and heart rate (HR) in patients with a ... Dyspnea immediately improved in all patients after BBD. The tracheal diameter significantly increased from 5.5 ± 1.5 mm to 13.0 ... significantly increased under isoflurane or propofol anesthesia during hyperventilation compared with those during ...
  http://cmj.org/showstats.asp?issn=0366-6999
*  The Neurocritical Care Airway | The NeuroICU Book, 2e | AccessNeurology | McGraw-Hill Medical
Hyperventilation increases cerebrovascular tone, acutely decreasing cerebral blood flow, with implications on maintaining ... Hypoventilation decreases cerebrovascular tone, increasing cerebral blood volume and acutely driving up ICP. ... Just prior to his transfer to the intensive care unit (ICU), he becomes progressively obtunded, with a symmetrical increase in ... This site uses cookies to provide, maintain and improve your experience. MHE Privacy Center Close ...
  https://neurology.mhmedical.com/content.aspx?bookid=2155§ionid=163966645
*  Laparoscopic Physiologic Perturbations: Implications for At-Risk Patients - The 3rd Edition: Prevention & Management
3 demonstrate an increase,9,16,37 and 4 show no increase.10,23,36,59 The literature suggests that an increase in pulmonary ... The literature indicates that an increase in systemic vascular resistance usually occurs with CDP, and an increase in left ... 22 demonstrate an increase,1,7,13,14,17,21-23,25,27,30,35-37,42,44,55,59-61,65,71 and 1 demonstrates no increase.45 Of 21 human ... 18 demonstrate an increase,1,4,9,11,16,23,25,29,31-33,36,37,41,42,50,59,66 and 1 shows no increase.34 Five human investigations ...
  http://laparoscopy.blogs.com/prevention_management_3/2010/07/laparoscopic-physiologic-perturbations-implications-for-atrisk-patients.html
*  Suprane Dosage Guide - Drugs.com
... until cerebral decompression in patients with known or suspected increases in CSFP. Appropriate attention must be paid to ... SUPRANE should be administered at 0.8 MAC or less, and in conjunction with a barbiturate induction and hyperventilation ( ... A rapid increase in desflurane concentration is associated with marked increase in pulse rate, mean arterial pressure and ... Concentrations of SUPRANE exceeding 1 MAC may increase heart rate. Thus with this drug, an increased heart rate may not serve ...
  https://www.drugs.com/dosage/suprane.html
*  Cerebral Edema - Renal and Urology News
Controlled hyperventilation to produce cerebral vasoconstriction due to hypocapnia is useful to control refractory increases in ... 3. Hyperventilation: this therapy can result in reduced cerebral blood flow and reduced cerebral perfusion with worsening of ... Cerebral edema occurs due to an increase in brain fluid content and can be divided into three forms: cytotoxic, vasogenic and ... Cerebral edema (CE) results from an increase in brain fluid content and may be life-threatening, requiring prompt recognition ...
  https://www.renalandurologynews.com/pediatrics/cerebral-edema/article/624786/
*  What are the Current Recommendations for Treatment of Acute Traumatic Head Injury? | PediatricEducation.org™
35 mg Hg is not recommended especially in the first 24 hours as it may increase cerebral ischemia. Mild hyperventilation with ... Aggressive hyperventilation with pCO2 , 30 mm Hg can be used in refractory intracranial hypertension.. The cerebral edema that ... Cerebral perfusion pressure - is the mean arterial pressure minus the intracranial pressure. Cerebral perfusion pressure must ... The guidelines recommend keeping the cerebral perfusion pressure between 40-65 mm Hg.. The loss of cerebral autoregulation is ...
  https://pediatriceducation.org/2007/11/05/what-are-the-current-recommendations-for-treatment-of-acute-traumatic-head-injury/
*  Elevated intracranial pressure - WikEM
Prevent Cerebral Vasoconstriction. *Hyperventilation does not improve mortality, used only as temporizing measure ... Phenylephrine increases cerebral perfusion pressure without increasing intracranial pressure in rabbits with balloon-elevated ... Increased ICP is due to an increase in any one of the 3 components of the intracranial space ... Mortality increases 20% for each 10 mmHg loss of CPP. *Avoid dips in CPP , 70 mmHg, which is associated with cerebral ischemia ...
  https://www.wikem.org/wiki/Elevated_intracranial_pressure
*  Encephalitis
Control of increased ICP may be attempted through hyperventilation, osmotic diuretics, CSF removal, or if necessary barbiturate ... Inflammatory cerebral edema may result in both ICP elevation and cerebral anoxia. Measures to decrease cerebral edema include ... Defects in effectors of the innate immune system may also be associated with an increased risk of encephalitis due to certain ... In cases where increased intracranial pressure (ICP) is a concern, invasive ICP monitoring may be necessary. ...
  https://www.neurologyadvisor.com/pediatrics/encephalitis/article/621567/
*  Research at The Department of Anaesthesiology Abdominal Centre
This reflects that low intensity exercise is associated with increasing cerebral oxygenation, while cerebral oxygenation ... since marked hyperventilation reduces arterial carbon dioxide tension and therefore cerebral blood flow at the same time as the ... It is demonstrated that physical exercise requires an approximately 20 % increase in cerebral blood flow and metabolic rate for ... Cerebral blood flow and oxygenation are also vulnerable to a lowering of blood pressure. The so-called lower level of cerebral ...
  https://www.rigshospitalet.dk/english/departments/abdominal-centre/department-of-anaesthesiology/research/Pages/research.aspx
*  Early Effects of Acid-Base Management during Hypothermia on Cerebral Infarct Volume, Edema, and Cerebral Blood Flow in Acute...
5 Because of the increased gas solubility during hypothermia, the α-stat strategy results in relative hyperventilation and a ... Cerebral infarct may still increase after days, and cerebral edema may change after a longer time period 25 . However, the ... the increased CBF in pH-stat management was associated with a reduced cerebral infarct volume and cerebral edema. ... 6,18,19 This effect was attributed to a greater rate of cerebral microemboli because of an increased CBF during pH-stat ...
  http://anesthesiology.pubs.asahq.org/article.aspx?articleid=1943868
*  Hyperventilation syndrome - Wikipedia
... decreased cerebral blood flow, and increased nerve sensitivity. In one study, one third of patients with HVS had "subtle but ... Hyperventilation syndrome (HVS); also chronic hyperventilation syndrome (CHVS) and dysfunctional breathing hyperventilation ... "Hyperventilation". Retrieved 2007-12-20. "Neurology - Hyperventilation Syndrome , Brad McKechnie, DC, DACAN". Retrieved 2007-12 ... Hyperventilation syndrome is believed to be caused by psychological factors and by definition has no organic cause. It is one ...
  https://en.wikipedia.org/wiki/Hyperventilation_syndrome
*  AboutBFS.com • View topic - Insight would be appreciated!
Hyperventilation syndrome may be due to hypocapnia, alkalosis, increased cerebral vasoconstiction, decreased cerebral blood ... Those are for most parts symptoms of chronic hyperventilation, which I suffer from. Episodes with a severe increase of those ... There's a link between BFS and hyperventilation, many BFSers develoo hyperventilation during the process, others had it prior ... flow (headaches), and increased nerve sensitivity.. Chronic hyperventilation also causes a condition called spasmophilia which ...
  http://www.aboutbfs.com/forums/viewtopic.php?p=144818
*  Valproate Toxicity
One case report discussed management of cerebral edema and increased intracranial pressure with ventriculostomy, ... hyperventilation to maintain a perfusion pressure at 60-70 mm Hg, and 1 dose of mannitol 25 g and dopamine 1-8 µg/kg/min.[24] ... In vitro studies have shown that VPA increases GABA levels by increasing the activity of glutamic acid decarboxylase and by ... It may be increased in neonates, in patients with liver disease, and in those ingesting an acute overdose, particularly with ...
  http://misc.medscape.com/pi/android/medscapeapp/html/A819315-business.html
*  Desflurane and Isoflurane Increase Lumbar Cerebrospinal Fluid Pressure in Normocapnic Patients Undergoing Transsphenoidal...
Lutz LJ, Milde JH, Milde LN: The response of the canine cerebral circulation to hyperventilation during anesthesia with ... Nitrous oxide has been shown to increase cerebral blood flow and cerebral metabolic oxygen consumption, which may increase ... concomitant increases in cerebral blood flow are induced. In addition, 0.5 MAC desflurane increases intracranial pressure ... If the mechanism for the increase in lumbar CSF pressure in humans proves to be cerebral vasodilation, as has been observed in ...
  http://anesthesiology.pubs.asahq.org/article.aspx?articleid=1949072
*  Iosa D - The Autonomic Nervous System: Its Study and The Pathogenesis of Chagas's Cardioneuromyopathy
... pressure as well as a reflex increase in heart rate (figure 4) (57). Hyperventilation causes a reduction in cerebral Pco2, ... b). Diastolic pressure, on the other hand, increased normally in the controls, did not increase in the ChI and ChII patients, ... BULBAR VASOMOTOR CENTER FUNCTION: ASSESSMENT BY THE HYPERVENTILATION TEST. The reflex induced by hyperventilation does not ... a). A normal increase in systolic and diastolic blood pressure was seen in the control group.. b). ChI and ChII patients showed ...
  http://www.fac.org.ar/scvc/llave/chagas/iosa/iosai.htm
*  Physiology of underwater diving - Wikipedia
Hyperventilation depletes the blood of carbon dioxide (hypocapnia), which causes respiratory alkylosis (increased pH), and ... Breath-hold blackout is a loss of consciousness caused by cerebral hypoxia towards the end of a breath-hold dive, when the ... as indicated by increased reaction time and increased errors in cognitive function, are effects which increase the risk of a ... which for contaminants is increased in proportion to absolute ambient pressure. Work of breathing is increased by increased ...
  https://en.wikipedia.org/wiki/Physiology_of_underwater_diving
*  Intracranial Abscesses. Brain and cerebral Abscesses | Patient
The frequency of fungal brain abscess has increased because of the frequent administration of broad-spectrum antimicrobials, ... Patients presenting with seizures require intubation and hyperventilation. Seizures should be treated aggressively to decrease ... Cerebral abscesses appear as a radiolucent space-occupying lesion:*As the disease progresses, a distinctive 'ring enhancement' ... the risk of increases in intracranial pressure.. *Corticosteroids: intravenous dexamethasone is used if massive cerebral oedema ...
  https://patient.info/doctor/intracranial-abscesses
*  Ornithine transcarbamylase - Wikipedia
Hyperventilation, secondary to cerebral edema, is a common early finding in a hyperammonemic attack, which causes a respiratory ... Levels of the amino acids glutamate and alanine will be increased (as these are the amino acids that receive nitrogen from ... Here, orotic acid (one step of this alternative pathway) levels in the blood are increased. A potential treatment for the high ... Hypoventilation and respiratory arrest follow, as pressure increases on the brainstem. In milder (or partial) urea cycle enzyme ...
  https://en.wikipedia.org/wiki/Ornithine_transcarbamylase
*  Inadequate cerebral oxygen delivery and central fatigue during strenuous exercise. - Semantic Scholar
... hyperventilation lowers the arterial carbon dioxide tension and blunts the increase in cerebral blood flow, which can lead to ... the brain is protected against hypoxia because cerebral blood flow increases when the arterial oxygen tension becomes low. ... hyperventilation lowers the arterial carbon dioxide tension and blunts the increase in cerebral blood flow, which can lead to ... Cerebral oxygenation during hyperoxia-induced increase in exercise tolerance for untrained men. *Kahina Oussaidene, Fabrice ...
  https://www.semanticscholar.org/paper/Inadequate-cerebral-oxygen-delivery-and-central-Nybo-Rasmussen/964f8eefff85c0bd81b17bc98880c52553a69af5