Results 81 to 90 of about 9,324 (256)

Congenital methemoglobinemia: Rare presentation of cyanosis in newborns

Clinics and Practice, 2019
Methemoglobin (MetHb) is an oxidized form on hemoglobin, which is unable to bind oxygen and consequently carry it to the tissues. Normally present in small quantities (3%) of total hemoglobin.
Ernestas Viršilas, Lina Timukienė, A. Liubsys   +2 more
semanticscholar   +1 more source

Tracing Nitrate Contamination Sources and Transformations in a Rural−Urban Karst Groundwater System in North China Using Multiple Isotopes and Simmr Modeling

Water Resources Research, Volume 61, Issue 10, October 2025.
Abstract In temperate karst aquifers under intensive anthropogenic impacts and high heterogeneity, groundwater contamination tracking has predominantly focused on nitrate, but inadequate evidence for co‐occurring ammonium sources undermines accurate nitrogen pollution assessments.
Jie Zhang, Lin Zhang, Tianyuan Zheng, Menggui Jin, Fengxin Kang, Jinde Jiang, Zhouwei Yuan, Jian Luo   +7 more
wiley   +1 more source

Refractory hypoxia and saturation gap in a COVID-19 patient

Practical Laboratory Medicine
Acquired methemoglobinemia, predominantly due to oxidizing medications occurs when heme iron in hemoglobin is oxidized from ferrous to ferric ion and binds oxygen irreversibly leading to functional anemia, cyanosis, and tissue hypoxia.
Abidah Mobarak, Subashini C. Thambiah, Ana Daliela Masiman, Intan Nureslyna Samsudin, Yin Ye Lai   +4 more
doaj   +1 more source

Methemoglobinemia presenting in a circumcised baby following application of prilocaine: a case report

Journal of Medical Case Reports, 2010
Introduction Local anesthesia with prilocaine has become a routine part of ambulatory circumcision procedures. Methemoglobinemia is a rare but potentially lethal complication of local anesthetics.
Ozgun Gulten, Dinc Avni, Aydin Gozde B, Osma Selcan, Ozdogan Hatice   +4 more
doaj   +1 more source

Nosocomial Methemoglobinemia Resulting from Self-Administration of Benzocaine Spray

Case Reports in Anesthesiology, 2015
Methemoglobinemia is life-threatening and bears pathognomonic signs difficult to diagnose in real time. Local anesthetics are widely used and are known for eliciting this condition. We report a case of methemoglobinemia secondary to self-administered use
Christopher Hoffman, Hawa Abubakar, Pramood Kalikiri, Michael Green   +3 more
doaj   +1 more source

Naphthalene Toxicity: Methemoglobinemia and Acute Intravascular Hemolysis

Cureus, 2018
Naphthalene poisoning is a rare form of toxicity that may occur after ingestion, inhalation, or dermal exposure to naphthalene-containing compounds such as mothballs. Clinically, patients present with acute onset of dark brown urine, watery diarrhea, and
Giselle Volney, Michael Tatusov, Andy C Yen, Nune Karamyan   +3 more
semanticscholar   +1 more source

Two Cases of Methemoglobinemia Caused by Prilocaine, A Local Anesthetic [PDF]

, 2022
Abuzer Coşkun
openalex   +1 more source

Methemoglobinemia caused by sodium nitrite overdose

Canadian Medical Association Journal, 2022
D. Saleh, S. Lucyk, E. McGillis
semanticscholar   +1 more source

Recessive congenital methemoglobinemia type II: Hypoplastic basal ganglia in two siblings with a novel mutation of the cytochrome b5 reductase gene

The Neuroradiology Journal, 2019
Recessive congenital methemoglobinemia type II is a very rare autosomal recessive hematologic disorder due to NADH-cytochrome b5 reductase deficiency, usually caused by full-stop mutations or deletions.
M. Nicolas-Jilwan
semanticscholar   +1 more source

Dapsone-induced methemoglobinemia: "Saturation gap"-The key to diagnosis

Journal of Anaesthesiology Clinical Pharmacology, 2014
Two cases of Acquired Methemoglobinemia are presented. The significance of a high index of suspicion for diagnosisis emphasized, especially in the presence of a "saturation gap".
Shivinder Singh, Navdeep Sethi, Sushmitha Pandith, Gouri Shankar Ramesh   +3 more
doaj   +1 more source