Formation of a Thiol–Ene Addition Product of Asthma Medication Montelukast Caused by a Widespread Tin-Based Thermal Stabilizer

2020 ◽  
Vol 33 (12) ◽  
pp. 2963-2971
Author(s):  
Philipp Schmidt ◽  
Christine Kolb ◽  
Andreas Reiser ◽  
Markus Philipp ◽  
Markus Godejohann ◽  
...  
Keyword(s):  
Addition Product ◽  
Asthma Medication ◽  
Thermal Stabilizer ◽  
Ene Addition

Many Children Manage Own Asthma Medication

2005 ◽  
Vol 39 (7) ◽  
pp. 38
Author(s):  
KERRI WACHTER
Keyword(s):  
Asthma Medication

Ionic dimerisation of trifluoropropenenitrile and its addition reactions with methyl trifluoropropenoate

1980 ◽  
Vol 45 (2) ◽  
pp. 406-414 ◽  
Author(s):  
Jiří Svoboda ◽  
Oldřich Paleta ◽  
Václav Dědek
Keyword(s):  
Reaction Mechanism ◽  
Proton Transfer ◽  
Substituent Effect ◽  
Solvent Molecule ◽  
Addition Product ◽  
Potassium Fluoride ◽  
Relative Reactivity ◽  
Addition Reactions ◽  
Tertiary Amines ◽  
Optimum Conditions

Dimerisation of trifluoropropenenitrile (I) in the presence of potassium fluoride and tertiary amines afforded a mixture of stereoisomeric perfluoro-4-methyl-pentenedinitriles (II), higher-boiling compounds, and 2,3,3,3-tetrafluoropropanenitrile (III) which arises by proton transfer from the solvent molecule. Under optimum conditions, product II was obtained in about 50% yield. Reaction of the nitrile I with methyl trifluoropropenoate (IV) gave, besides the dimers II and V, the product of addition of the nitrile I to the propenoate, IV, i.e. methyl 4-cyanoperfluoro-2-pentenoate (VI), and the addition product of the propenoate IV to the nitrile I, i.e. methyl 4-cyanoperfluoro-2-methyl-3-butenoate (VII). The relative reactivity if I and IV is discussed. The ratio of stereoisomers in II, V, VI and VII indicates that the magnitude of the steric substituent effect, operating in the reaction mechanism, decreases in the order -CFCF3.(COOCH3) > -CFCF3(CN) > -COOCH3 > -CN.

scholarly journals Medication Errors in Adolescents Using Asthma Controller Medications

2020 ◽  
Vol 7 ◽  
pp. 2333794X2098134
Author(s):  
Henry Clark ◽  
Delesha Carpenter ◽  
Kathleen Walsh ◽  
Scott A. Davis ◽  
Nacire Garcia ◽  
...  
Keyword(s):  
Medical Record ◽  
Medication Errors ◽  
Medication Use ◽  
Persistent Asthma ◽  
Cross Sectional Study ◽  
Asthma Medication ◽  
Sectional Study ◽  
Cross Sectional ◽  
Controller Medication ◽  
Controller Medications

The purpose of this study was to describe the number and types of errors that adolescents and caregivers report making when using asthma controller medications. A total of 319 adolescents ages 11 to 17 with persistent asthma and their caregivers participated in this cross-sectional study. Adolescent and caregiver reports of asthma medication use were compared to the prescribed directions in the medical record. An error was defined as discrepancies between reported use and the prescribed directions. About 38% of adolescents reported 1 error in using asthma controller medications, 16% reported 2 errors, and 5% reported 3 or more errors. About 42% of caregivers reported 1 error in adolescents using asthma controller medications, 14% reported 2 errors, while 6% reported 3 or more errors. The type of error most frequently reported by both was not taking the medication at all. Providers should ask open-ended questions of adolescents with asthma during visits so they can detect and educate families on how to overcome errors in taking controller medication use.

scholarly journals Exogenous female sex steroid hormones and risk of asthma and asthma-like symptoms: a cross sectional study of the general population

Thorax ◽  
2001 ◽  
Vol 56 (8) ◽  
pp. 613-616
Author(s):  
P Lange ◽  
J Parner ◽  
E Prescott ◽  
C Suppli Ulrik ◽  
J Vestbo
Keyword(s):  
General Population ◽  
Postmenopausal Women ◽  
Hormone Replacement ◽  
Premenopausal Women ◽  
Cross Sectional Study ◽  
Asthma Medication ◽  
Hormonal Contraceptives ◽  
Cross Sectional ◽  
Heart Study ◽  
Prescription Practice

BACKGROUNDRecent evidence suggests a role for hormonal factors in the aetiology of asthma.METHODSData from a large study of women selected from the general population were used to relate treatment with oral hormonal contraceptives (OCP) and postmenopausal hormone replacement therapy (HRT) to the following asthma indicators: self-reported asthma, wheezing, cough at exertion, and use of medication for asthma. The study sample comprised 1536 premenopausal and 3016 postmenopausal women who participated in the third round of the Copenhagen City Heart Study in 1991–4. A total of 377 women were taking OCP (24.5% of premenopausal women) and 458 were on HRT (15.2% of postmenopausal women).RESULTSIn premenopausal women 4.8% reported having asthma. The prevalence of self-reported asthma, wheeze, use of asthma medication, and cough at exertion was not significantly related to use of OCP. In postmenopausal women the prevalence of self-reported asthma was 6.2%. A weak but consistent association was observed between HRT and self-reported asthma (OR 1.42 (95% CI 0.95 to 2.12)), wheeze (OR 1.29 (95% CI 1.02 to 1.64)), cough at exertion (OR 1.34 (95% CI 1.01 to 1.77)), and use of asthma medication (OR 1.45 (95% CI 0.97 to 2.18)).CONCLUSIONSIn this study of the general population no relationship was found between the use of OCP and asthma. Although an association was observed between HRT and asthma and asthma-like symptoms, this was relatively weak and it is concluded that there is no necessity to change present prescription practice.

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