The clinical value of screening for acetaminophen in all patients with intentional overdose or altered mental status suspected to be secondary to overdose

BackgroundAcetaminophen (APAP) is commonly coingested in cases of suicide or intoxication because it is widely available, effectively analgesic and antipyretic, and it is often combined with other medications, such as opioids and antihistamines. APAP overdose often causes no symptoms or nonspecific...

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Main Authors: Bader Alyahya, Abdulaziz Alalshaikh, Mohammed Almohawes, Mosaed Alnowiser, Omar Alsuliman, Rand Alrefaei, Sarah Alaidarous, Maha Alnahdi, Shadi Tamur, Musa Alfaifi, Mohammed Al Deeb, Zohair A. Al Aseri
Format: Article
Language:English
Published: Frontiers Media S.A. 2025-07-01
Series:Frontiers in Pharmacology
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Online Access:https://www.frontiersin.org/articles/10.3389/fphar.2025.1633548/full
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author Bader Alyahya
Abdulaziz Alalshaikh
Mohammed Almohawes
Mosaed Alnowiser
Omar Alsuliman
Rand Alrefaei
Sarah Alaidarous
Maha Alnahdi
Shadi Tamur
Musa Alfaifi
Mohammed Al Deeb
Zohair A. Al Aseri
Zohair A. Al Aseri
Zohair A. Al Aseri
author_facet Bader Alyahya
Abdulaziz Alalshaikh
Mohammed Almohawes
Mosaed Alnowiser
Omar Alsuliman
Rand Alrefaei
Sarah Alaidarous
Maha Alnahdi
Shadi Tamur
Musa Alfaifi
Mohammed Al Deeb
Zohair A. Al Aseri
Zohair A. Al Aseri
Zohair A. Al Aseri
author_sort Bader Alyahya
collection DOAJ
description BackgroundAcetaminophen (APAP) is commonly coingested in cases of suicide or intoxication because it is widely available, effectively analgesic and antipyretic, and it is often combined with other medications, such as opioids and antihistamines. APAP overdose often causes no symptoms or nonspecific symptoms in the first 12–24 h after ingestion. Delayed diagnosis is associated with a reduced response to antidote and sometimes liver failure and mortality. However, ordering unnecessary test is not cost-effective specially if it is mostly negative, and empirical therapy is associated with significant cost and possible adverse effects.MethodsThis single-center retrospective study was conducted at King Saud University Medical City (KSUMC) in Riyadh, Saudi Arabia. Our population included all patients who presented to the emergency department with intentional drug overdose or altered mental status (AMS) suspected to be related to an overdose between June 2015 and January 2024 but with a history that was not suggestive of APAP overdose. Medical records were reviewed for patient information on demographic data, overdose details, and documentation of the clinical features of toxicity. All the subjects were kept anonymous; we used code numbers as identifiers. The data collected by the investigators were entered into an Excel worksheet in an encrypted format.ResultsA total of 2914 patients were screened for acetaminophen (APAP) levels and 1517 met our inclusion criteria. Fourteen (0.9%) patients had detectable levels (>10 μg/mL) despite a negative history. Three (0.2%) patients had levels above 100 μg/mL and were treated with N-acetylcysteine (NAC).ConclusionOur study revealed that a small number of patients who presented with intentional overdose but denied APAP ingestion or AMS suspected to be due to overdose had a positive APAP level. But, Given the serious consequences of APAP toxicity we cannot recommend stopping the screening for APAP specially in high-risk suicidal patients. A larger multicenter study is recommended to identify those high-risk patients. We also found deviation from the current guidelines regarding NAC administration in patients with positive APAP level when the time of ingestion is unknown.
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spelling doaj-art-5e1b7942b8eb43898e3db0c90c36b72f2025-07-30T05:28:09ZengFrontiers Media S.A.Frontiers in Pharmacology1663-98122025-07-011610.3389/fphar.2025.16335481633548The clinical value of screening for acetaminophen in all patients with intentional overdose or altered mental status suspected to be secondary to overdoseBader Alyahya0Abdulaziz Alalshaikh1Mohammed Almohawes2Mosaed Alnowiser3Omar Alsuliman4Rand Alrefaei5Sarah Alaidarous6Maha Alnahdi7Shadi Tamur8Musa Alfaifi9Mohammed Al Deeb10Zohair A. Al Aseri11Zohair A. Al Aseri12Zohair A. Al Aseri13Emergency Medicine Department, College of Medicine, King Saud University, Riyadh, Saudi ArabiaEmergency Medicine Department, College of Medicine, King Saud University, Riyadh, Saudi ArabiaEmergency Medicine Department, College of Medicine, King Saud University, Riyadh, Saudi ArabiaEmergency Medicine Department, College of Medicine, King Saud University, Riyadh, Saudi ArabiaCollege of Medicine, King Saud University, Riyadh, Saudi ArabiaCollege of Medicine, King Saud University, Riyadh, Saudi ArabiaCollege of Medicine, King Saud University, Riyadh, Saudi ArabiaEmergency Medicine Department, College of Medicine, King Saud University, Riyadh, Saudi ArabiaDepartment of Pediatrics, College of Medicine, Taif University, Taif, Saudi ArabiaDepartment of Emergency Medicine, Armed Forces Hospital, Khamis Mushait, Saudi ArabiaDepartment of Emergency Medicine, College of Medicine, King Saud Bin Abdulaziz University for Health Sciences, Riyadh, Saudi ArabiaEmergency Medicine Department, College of Medicine, King Saud University, Riyadh, Saudi ArabiaDepartment of Clinical Sciences, College of Medicine and Riyadh Hospital, Dar Al Uloom University, Riyadh, Saudi ArabiaAdult Critical Care, Therapeutic Deputyship, Ministry of Health, Riyadh, Saudi ArabiaBackgroundAcetaminophen (APAP) is commonly coingested in cases of suicide or intoxication because it is widely available, effectively analgesic and antipyretic, and it is often combined with other medications, such as opioids and antihistamines. APAP overdose often causes no symptoms or nonspecific symptoms in the first 12–24 h after ingestion. Delayed diagnosis is associated with a reduced response to antidote and sometimes liver failure and mortality. However, ordering unnecessary test is not cost-effective specially if it is mostly negative, and empirical therapy is associated with significant cost and possible adverse effects.MethodsThis single-center retrospective study was conducted at King Saud University Medical City (KSUMC) in Riyadh, Saudi Arabia. Our population included all patients who presented to the emergency department with intentional drug overdose or altered mental status (AMS) suspected to be related to an overdose between June 2015 and January 2024 but with a history that was not suggestive of APAP overdose. Medical records were reviewed for patient information on demographic data, overdose details, and documentation of the clinical features of toxicity. All the subjects were kept anonymous; we used code numbers as identifiers. The data collected by the investigators were entered into an Excel worksheet in an encrypted format.ResultsA total of 2914 patients were screened for acetaminophen (APAP) levels and 1517 met our inclusion criteria. Fourteen (0.9%) patients had detectable levels (>10 μg/mL) despite a negative history. Three (0.2%) patients had levels above 100 μg/mL and were treated with N-acetylcysteine (NAC).ConclusionOur study revealed that a small number of patients who presented with intentional overdose but denied APAP ingestion or AMS suspected to be due to overdose had a positive APAP level. But, Given the serious consequences of APAP toxicity we cannot recommend stopping the screening for APAP specially in high-risk suicidal patients. A larger multicenter study is recommended to identify those high-risk patients. We also found deviation from the current guidelines regarding NAC administration in patients with positive APAP level when the time of ingestion is unknown.https://www.frontiersin.org/articles/10.3389/fphar.2025.1633548/fullacetaminophen levelacetaminophen toxicitySaudi Arabiaacetaminophen screeningsilent paracetamol overdose
spellingShingle Bader Alyahya
Abdulaziz Alalshaikh
Mohammed Almohawes
Mosaed Alnowiser
Omar Alsuliman
Rand Alrefaei
Sarah Alaidarous
Maha Alnahdi
Shadi Tamur
Musa Alfaifi
Mohammed Al Deeb
Zohair A. Al Aseri
Zohair A. Al Aseri
Zohair A. Al Aseri
The clinical value of screening for acetaminophen in all patients with intentional overdose or altered mental status suspected to be secondary to overdose
Frontiers in Pharmacology
acetaminophen level
acetaminophen toxicity
Saudi Arabia
acetaminophen screening
silent paracetamol overdose
title The clinical value of screening for acetaminophen in all patients with intentional overdose or altered mental status suspected to be secondary to overdose
title_full The clinical value of screening for acetaminophen in all patients with intentional overdose or altered mental status suspected to be secondary to overdose
title_fullStr The clinical value of screening for acetaminophen in all patients with intentional overdose or altered mental status suspected to be secondary to overdose
title_full_unstemmed The clinical value of screening for acetaminophen in all patients with intentional overdose or altered mental status suspected to be secondary to overdose
title_short The clinical value of screening for acetaminophen in all patients with intentional overdose or altered mental status suspected to be secondary to overdose
title_sort clinical value of screening for acetaminophen in all patients with intentional overdose or altered mental status suspected to be secondary to overdose
topic acetaminophen level
acetaminophen toxicity
Saudi Arabia
acetaminophen screening
silent paracetamol overdose
url https://www.frontiersin.org/articles/10.3389/fphar.2025.1633548/full
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