Page last updated: 2024-10-16

ammonium hydroxide and Acquired Encephalocele

ammonium hydroxide has been researched along with Acquired Encephalocele in 7 studies

azane : Saturated acyclic nitrogen hydrides having the general formula NnHn+2.

Research Excerpts

ExcerptRelevanceReference
" We report a case of combined ecstasy/cocaine-induced fulminant hepatic failure presenting with severe rhabdomyolysis, myocardial infarction and multiorgan failure."3.72Successful treatment of refractory cerebral oedema in ecstasy/cocaine-induced fulminant hepatic failure using a new high-efficacy liver detoxification device (FPSA-Prometheus). ( Bauer, E; Kramer, L; Mallek, R; Schenk, P; Steininger, R; Vigl, M, 2003)
"Specific treatments of hyperammonemia are rarely used in liver failure when compared with urea cycle defect even though use of ammonia scavengers may help to decrease ammonemia."1.38Threshold for toxicity from hyperammonemia in critically ill children. ( Alvarez, F; Cousineau, J; Ducruet, T; Jouvet, P; Lambert, M; Mitchell, G; Nelson, J; Ozanne, B; Phan, V, 2012)
"Patients with acute liver failure (ALF) often die of intracranial pressure (IP) and cerebral herniation."1.37Brain region-selective mechanisms contribute to the progression of cerebral alterations in acute liver failure in rats. ( Agusti, A; Boix, J; Cauli, O; Cerdán, S; Felipo, V; López-Larrubia, P; Nieto-Charques, L; Rodrigo, R, 2011)
"Cerebral edema leading to cerebral herniation (CH) is a common cause of death in acute liver failure (ALF)."1.30Cerebral herniation in patients with acute liver failure is correlated with arterial ammonia concentration. ( Clemmesen, JO; Hansen, BA; Kondrup, J; Larsen, FS; Ott, P, 1999)

Research

Studies (7)

TimeframeStudies, this research(%)All Research%
pre-19900 (0.00)18.7374
1990's2 (28.57)18.2507
2000's2 (28.57)29.6817
2010's3 (42.86)24.3611
2020's0 (0.00)2.80

Authors

AuthorsStudies
Bezinover, D1
Douthitt, L1
McQuillan, PM1
Khan, A1
Dalal, P1
Stene, J1
Uemura, T1
Kadry, Z1
Janicki, PK1
Cauli, O1
López-Larrubia, P1
Rodrigo, R1
Agusti, A1
Boix, J1
Nieto-Charques, L1
Cerdán, S1
Felipo, V1
Ozanne, B1
Nelson, J1
Cousineau, J1
Lambert, M1
Phan, V1
Mitchell, G1
Alvarez, F1
Ducruet, T1
Jouvet, P1
Kramer, L1
Bauer, E1
Schenk, P1
Steininger, R1
Vigl, M1
Mallek, R1
Clemmesen, JO1
Larsen, FS1
Kondrup, J1
Hansen, BA1
Ott, P1
Conn, HO2

Clinical Trials (2)

Trial Overview

TrialPhaseEnrollmentStudy TypeStart DateStatus
Therapeutic Efficacy of L-Ornithine L-Aspartate Infusion in Patients With Acute Liver Failure: A Double- Blind, Randomized, Placebo- Controlled Study[NCT00470314]Phase 2150 participants (Actual)Interventional2005-01-31Active, not recruiting
A Phase 2a Study to Evaluate the Safety and Tolerability of OCR-002 (Ornithine Phenylacetate) in the Treatment of Patients With Acute Liver Failure/Severe Acute Liver Injury[NCT01548690]Phase 247 participants (Actual)Interventional2012-06-30Completed
[information is prepared from clinicaltrials.gov, extracted Sep-2024]

Trial Outcomes

Change in Ammonia

To evaluate the effect of OCR-002 on ammonia levels in patients with acute liver failure/severe acute liver injury (NCT01548690)
Timeframe: Baseline and 72 Hours

InterventionPercent Change (Mean)
Maximum Dose Level 3.33 g/24h41.2
Maximum Dose Level 6.65 g/24h16.6
Maximum Dose Level 10 g/24h41.8
Maximum Dose Level 20g/24h38.4

Measurement of OCR-002 Plasma Concentration

To evaluate the steady state pharmacokinetic and pharmacodynamic profile of OCR-002 in patients with impaired and intact renal function using urinary phenylacetylglutamine (PAGN) as a surrogate marker (NCT01548690)
Timeframe: 24 Hours after last infusion

Interventionmicrograms per millileter (Mean)
Maximum Dose Level 3.33 g/24h65.6
Maximum Dose Level 6.65 g/24h32.2
Maximum Dose Level 10 g/24h33.4
Maximum Dose Level 20g/24h104.9

Neurological Function Measured by the Orientation Log (O-log)

The orientation log focuses on orientation to place, time, and circumstance. There are 10 items on the orientation log, which are scored 0-3. A spontaneous correct response is awarded 3 points. A spontaneous response that is lacking or incorrect, but a correct response is provided following a logical cue is awarded 2 points. A score of 1 is given if spontaneous and cued responses are lacking or incorrect, but a correct response is provided in a recognition format. A score of 0 is given if the spontaneous, cued, or recognition format does not generate a correct answer. Scores from the 10 items are summed and the final score ranges from 0 to 30. (NCT01548690)
Timeframe: 30 Days

Interventionunits on a scale (Mean)
Maximum Dose Level 3.33 g/24h23.8
Maximum Dose Level 6.65 g/24h24.0
Maximum Dose Level 10 g/24h24.0
Maximum Dose Level 20g/24h24.0

Neurological Function Measured by the West Haven Criteria (WHC) for Hepatic Encephalopathy

The West Haven Criteria (WHC) for Hepatic Encephalopathy measures the severity of encephalopathy and patient's level of consciousness. The scale ranges from 0 to 4; a minimum score of 0 represents a better outcome, and a maximum total score of 4 represents a worse outcome. A score of 0 corresponds to normal consciousness and behavior and normal neurological examination. A score of 1 corresponds to mild lack of awareness, shortened attention span, and impaired addition or subtraction; mild asterixis or tremor. A score of 2 corresponds to lethargy, disorientated or inappropriate behavior, obvious asterixis; slurred speech. A score of 3 corresponds to somnolent but arousable, gross disorientation or bizarre behavior, muscle rigidity and clonus; hyperreflexia. A score of 4 corresponds to coma and decerebrate posturing. (NCT01548690)
Timeframe: 120 hours from start of infusion

Interventionunits on a scale (Mean)
Maximum Dose Level 3.33 g/24h2.4
Maximum Dose Level 6.65 g/24h3.2
Maximum Dose Level 10 g/24h1.6
Maximum Dose Level 20g/24h1.8

Number of Participants That do Not Tolerate the Administered Dose and Had Grade 3 or 4 Treatment Emergent Adverse Events as a Measure of Safety and Tolerability

To evaluate the safety and tolerability of OCR-002 in patients with acute liver failure/severe acute liver injury (NCT01548690)
Timeframe: 30 Days

InterventionParticipants (Count of Participants)
Maximum Dose Level 3.33 g/24h0
Maximum Dose Level 6.65 g/24h0
Maximum Dose Level 10 g/24h0
Maximum Dose Level 20g/24h0

Other Studies

7 other studies available for ammonium hydroxide and Acquired Encephalocele

ArticleYear
Fatal hyperammonemia after renal transplant due to late-onset urea cycle deficiency: a case report.
    Transplantation proceedings, 2010, Volume: 42, Issue:5

    Topics: Age of Onset; Ammonia; Circle of Willis; Encephalocele; Exons; Gene Amplification; Humans; Immunosup

2010
Brain region-selective mechanisms contribute to the progression of cerebral alterations in acute liver failure in rats.
    Gastroenterology, 2011, Volume: 140, Issue:2

    Topics: Ammonia; Animals; Blood-Brain Barrier; Brain Edema; Capillary Permeability; Cerebellum; Cerebrum; En

2011
Threshold for toxicity from hyperammonemia in critically ill children.
    Journal of hepatology, 2012, Volume: 56, Issue:1

    Topics: Ammonia; Brain Edema; Child; Child, Preschool; Critical Illness; Encephalocele; Female; Humans; Hype

2012
Successful treatment of refractory cerebral oedema in ecstasy/cocaine-induced fulminant hepatic failure using a new high-efficacy liver detoxification device (FPSA-Prometheus).
    Wiener klinische Wochenschrift, 2003, Sep-15, Volume: 115, Issue:15-16

    Topics: Adult; Ammonia; Brain Edema; Cocaine; Encephalocele; Follow-Up Studies; Hepatic Encephalopathy; Huma

2003
Cerebral herniation in patients with acute liver failure is correlated with arterial ammonia concentration.
    Hepatology (Baltimore, Md.), 1999, Volume: 29, Issue:3

    Topics: Acute Disease; Adult; Ammonia; Arteries; Encephalocele; Female; Hepatic Encephalopathy; Humans; Live

1999
Cerebral herniation in patients with acute liver failure is correlated with arterial ammonia concentration.
    Hepatology (Baltimore, Md.), 1999, Volume: 29, Issue:3

    Topics: Acute Disease; Adult; Ammonia; Arteries; Encephalocele; Female; Hepatic Encephalopathy; Humans; Live

1999
Cerebral herniation in patients with acute liver failure is correlated with arterial ammonia concentration.
    Hepatology (Baltimore, Md.), 1999, Volume: 29, Issue:3

    Topics: Acute Disease; Adult; Ammonia; Arteries; Encephalocele; Female; Hepatic Encephalopathy; Humans; Live

1999
Cerebral herniation in patients with acute liver failure is correlated with arterial ammonia concentration.
    Hepatology (Baltimore, Md.), 1999, Volume: 29, Issue:3

    Topics: Acute Disease; Adult; Ammonia; Arteries; Encephalocele; Female; Hepatic Encephalopathy; Humans; Live

1999
Hyperammonia and cerebral herniation: is an abnormality of ammonia metabolism responsible?
    The American journal of gastroenterology, 1999, Volume: 94, Issue:12

    Topics: Ammonia; Brain; Encephalocele; Hepatic Encephalopathy; Humans; Intracranial Hypertension; Liver; Liv

1999
Hyperammonemia and intracranial hypertension: lying in wait for patients with hepatic disorders?
    The American journal of gastroenterology, 2000, Volume: 95, Issue:3

    Topics: Ammonia; Encephalocele; Humans; Intracranial Hypertension; Liver Failure, Acute; Predictive Value of

2000