E. Abbas. California State University, Chico.
Sleep quality and sleep duration are separate even if partly overlapping and correlated characteristics of sleep (Buysse et al discount 10mg loratadine overnight delivery allergy forecast wheaton il. Sleep quality issues are often referred to as insomnia symptoms or insomnia-like symptoms that include difficulties initiating or maintaining sleep buy discount loratadine 10 mg on line allergy testing tray, non-restorative sleep or global dissatisfaction with sleep (Ohayon, 2002). Depending on the way to operationalize sleep quality the average population prevalence of poor or disturbed sleep vary between 6% and 30% (Ohayon, 2002). In Finland, epidemiological data from 1972 to 2013 indicate a continuing considerable increase in occasional insomnia-like symptoms in the working-aged population (Kronholm et al. Sleep related problems more often occur in women than in men, and are also more common along with increasing age (Barclay and Gregory, 2013; Kronholm et al. There are also some questionnaires that are being used in population studies to assess both the duration and quality of sleep, as for example the Pittsburgh Sleep Quality 26 Index (Buysse et al. It is also possible to assess times for going to bed and getting up from bed (Kronholm et al. Self-reported measures of sleep in population-based research can be held sufficiently valid when compared to polysomnography (Zinkhan et al. The golden standard method to measure sleep is the polysomnography that simultaneously measures the electrical activity of the brain, heart, and muscles, movements of the eye and respiratory actions while the person is at sleep (Knutson, 2010; Krystal and Edinger, 2008). In large scale studies polysomnography is an inconvenient method due to its practical and economical requirements. Developments in accelerometer technology have enabled the increasing use of accelerometry as a means to assess sleep in large scale settings (Ferrie et al. The agreement between wrist worn accelerometers with polysomnography has shown to be superior to that of hip placement with polysomnography (Zinkhan et al. The validity of wrist worn accelerometers in sleep assessment seem to be accepted in the literature relative to polysomnography, at least in terms of total sleep time and sleep efficiency (Girschik et al. In middle- aged the day-to-day variation in actigraphy is high, whereas the year-to-year variation is not significant, indicating that one multiple day collection will likely be reflecting a true habitual average for that person (Knutson et al. According to differences in the timing of sleep and wake, and differences in preferences for performing physical and mental tasks, different chronotypes can be identified (Adan et al. Those with early bed times and morning awakenings and high morning alertness are called morning types and those with peak alertness later in the afternoon with a preference for later bed times are called evening types (Adan et al. Approximately 60% of people do not belong to either of these two extreme chronotypes, but rather have an intermediate type (Adan et al. The chronotype is affected by individual and environmental factors such as age, gender, daylight and activity (Adan et al. There is some evidence from cross-sectional data that chronotype shifts with age, with young children being morning type and a pronounced tendency to evening type during adolescence where after morning preference again becomes more prevalent with increasing age (Adan et al. Women experience the maximum in eveningness at an earlier age than men, and women also have a shorter intrinsic circadian period than men (Adan et al. However, a different distribution of morning type and evening type by gender is not altogether supported by the literature (Paine et al. In Finland the population prevalence of evening types among men seem to have increased from the 1980’s to the 2000’s (Broms et al. In a large sample of mainly central European participants a significant change in the average chronotype to more evening types from 2002 to 2010 was observed (Roenneberg et al. The risk for social jetlag is often higher in evening types because they are more often forced to follow an earlier social rhythm compared to their intrinsic circadian phase (Roenneberg et al. Different self-report tools have been created to provide non- invasive, more practical ways to assess chronotypes, particularly in large- scale studies (Di Milia et al. Since then several other questionnaires and ways to assess this trait have been developed (Adan et al. One discussed limitation with self-report questionnaires of chronotype is the cutoff values that are being used to distinguish between different chronotypes (Di Milia et al. More evidence is needed regarding the modifying effect of factors such as light exposure, body composition and diet (Chennaoui et al.
The term ‘‘emollient’’ implies (from the Latin derivation) a material designed to soften the skin (i loratadine 10mg amex allergy vacuum cleaner. The term ‘‘moisturizer’’ is often used synonymously with emollient discount loratadine 10 mg mastercard allergy testing using hair, but moisturizers usually contain humec- tants, which hydrate the stratum corneum. In the present chapter, the term mois- turizer will be used, but may also apply to creams without humectants. Application of moisturizers to the skin induces tactile and visual changes of the skin surface. The ratio between oil and water is important, as well as the type of oil and the amount and type of other ingredients (emulsiﬁers, humectants, etc). The combination of substances inﬂuences the initial feel of the product, its spreading behavior on the skin, whether and how fast it is absorbed, and how the skin feels after its use. Water in the applied products has an immediate hydrat- ing effect, due to penetration into the skin from their water phase (17). Other ingredients can also be absorbed into the skin, be metabolized, or disappear from the skin surface by evaporation or contact with other materials (18–21). Recent studies indicate that moisturizers may have greater impact on the skin than is generally believed. Moisturizers affect the structure and barrier func- tion not only of diseased skin, but also of skin that looks normal. The term ‘‘cos- meceuticals,’’ as proposed by Kligman, may be relevant to describe moisturizers that contain no recognized medicaments, but nonetheless have medicinal value (22). The present chapter will give an overview of the structure and function of dry skin relating to the use of moisturizers. Closer examination of these areas by scanning electron microscopy shows that the surface morphology is changed from a regular pattern to a coarser one, with broad, irregularly running furrows and loss of minor fur- rows (3). Likewise, in xerosis, increasing derangement of minor furrows and later also of major furrows can be observed (23). A more coarse and irregular skin surface pattern with larger squares is also found in recessive X-linked ichthyosis (24). Moisturizers are expected to increase skin hydration and to modify the physical and chemical nature of the surface to one that is smooth, soft, and pliable. Smoothing of the surface can be observed immediately after application of a moisturizer as a result of the ﬁlling of spaces between partially desquamated skin ﬂakes (25,26). Besides mixing with material already present on the surface, topically applied substances may enter into the skin and affect its surface structure and water content. Using instrumental evaluation of the skin topography the inﬂuence of mois- turizers on the skin structure has been addressed (25,28–33). The roughness pa- rameters and the distance between furrows/peaks can describe changes in the hydration status (28–35). Dry skin tends to have a larger number of high peaks and a larger distance between the peaks than normal skin (33,34). Hydration of normal skin has been reported both to decrease (28,29,35) and to increase (30) the roughness parameters. A single application of moisturizers has been found to decrease the roughness parameters and reduce the distance between the furrows during the ﬁrst 2 h (31). No change in the roughness but a decrease in the distance between the peaks was found after a 21-day treatment period in a study by Cook (34). The ﬁbrous elements in the corneocytes have hydrophilic properties and also contain a water-soluble fraction that enhances their water-holding capacity (37–39). At a water content below 10%, the primary water is tightly bound, presumably to the polar sites of the proteins (14,40,41). When the degree of hydration exceeds 10%, the secondary water is hydrogen bonded around the protein-bound water, and above 40 to 50% the water resembles the bulk liquid (14,40,41). Possible Roles for Humectants Moisturizers often contain low-molecular-weight substances with water-attracting properties, called humectants.
Comedonal hyperkeratosis in acne-prone subjects might also be improved by the same compounds order loratadine 10 mg with amex allergy shots toddlers. In the ﬁeld of tumors cheap loratadine 10 mg with mastercard allergy medicine comparison, benign keratoses and viral warts may also be affected by high-concentration formulations. The effect of hydroxyacids, if any, on helioder- matosis appears more complex, involving multifaceted mechanisms boosting physiological aspects of aging skin. In the present review, we arbitrarily deﬁne the category low concentration when there is less than 4% of active compound in the formulation. Medium concentra- tion is applied in the range 4 to 12%, and high concentration for dosages higher than that. Their numbers normally decrease toward the surface of the skin, most notably during the stratum compactum to stratum disjunctum transition (2). In xerotic and ichthyotic conditions, ordered desquamation is impaired because des- mosomes persist up to the outer stratum corneum leading to the unruly accumula- tion of corneocytes and to skin scaling and ﬂaking (3). Although this compound at low and medium concentrations seems to have little or no effect on the normal stratum corneum, there is growing evidence that complete desmosomal degradation is helped in various xerotic and ichthyotic disorders (4–6). It appears, therefore, that applying the term keratolytic to such a compound is a misnomer, while desmolytic agent is more appropriate and explicit. Quite recently, a lipophilic derivative of salicylic acid was tested on normal human skin (6,7). One of its main targets is clearly the corneo- somes, which appear to be weakened following altered chemical bonds in the junctional complexes. The usefulness of such formulations in xerotic and allied conditions is beyond doubt (12–17). The cutaneous surface pH changes cannot be taken lightly because they can persist several hours following applications and can affect a number of stratum corneum layers according to the product concentration. In such instances, no disaggregation of corneocytes at upper levels of the stratum corneum is apparent (17). In addition to the therapeutic effect of the various hydroxyacids improving hyperkeratotic disorders, the same products yield cosmetic beneﬁts by increasing plasticization and ﬂexibility of the stratum corneum (18) without impairing the barrier function (7,11,19). A similar pro- tection was not evidenced after applications of salicylic acid (22). Such injury is a chemi- cal peeling depending primarily upon the disruption of the skin pH. The farther away from the physiological pH, the greater the caustic effect, the greater the risk of side effects, but the more likely the patient is to receive the beneﬁts of the peeling agents. The indications of such treatment encompass the destruction of slightly elevated seborrheic and actinic keratoses (12,25). The full-strength preparation must be applied carefully and exactly to the keratosis in an ofﬁce procedure. Common warts can also be eradicated by hydroxyacids in a home-administered treatment with 40 Pierard´ et al. To shorten the treatment period, the outer portion of the hyperkeratosis can be removed with a scalpel in an ofﬁce setting. However, clearcut evidence for a signiﬁcant beneﬁt at low concentration in well-controlled experimental and clinical trials is scanty. Another modality of acne treatment has been proposed using high concen- trations of glycolic acid in an ofﬁce setting (12). Improvement has been reported to be precipitous while patients were also taking tetracyclines (12). Discomfort, mild diffuse erythema, and ﬁne scaling are often experienced by patients. In addition, there is a risk for stronger irritation leading to a papular and perifollicular erythema that can persist for a few weeks. Accordingly, some of these compounds have been used to correct skin atrophy (36) and to induce a gradual reduction in signs of aging, including dispigmentations (37) and wrinkles of ﬁne and moderate depth (12,33,38–40).
Other: Side-effects caused by "plasma concentration of the cyanide metabolite include "pulse purchase 10mg loratadine with amex allergy testing does it work, sweating purchase 10mg loratadine visa allergy symptoms severe, hyperventilation, arrhythmias, marked metabolic acidosis. Pharmacokinetics The drug is rapidly eliminated; when infusion is stopped blood pressure returns to pre-treatment levels within 1--10 minutes. This assessment is based on the full range of preparation and administration options described in the monograph. Sodium stibogluconate 100mg/mL solution in 100-mL vials * Sodium stibogluconate is a pentavalent antimony compound. Pre-treatment checks * Do not give if a serious reaction was experienced to the previous dose. Unfortunately the degree of renal impairment at which the drug should not be given (or should be given at a reduced dose) is poorly defined and no precise data is available based on creatinine clearance. Patients should be examined for evidence of relapse after 2 and 6 months and in Africa again after 12 months. Expert advice should be sought for dosing information in other forms of leishmaniasis as treatment regimens vary by species and geographical source of infection. Withdraw the required dose into a syringe immediately before administration through a filter of 5 microns or less (if the volume exceeds 10mL the dose should be split between two sites1). Withdraw the required dose into a syringe immediately before administration through a filter of 5 microns or less. Remove the filter and replace with a fine needle, which may help to avoid thrombophlebitis. Technical information Incompatible with No information but do not mix with any other drug. In use: The manufacturer states that the vial contents should not be used more than 1 month after removing the first dose. Monitoring Measure Frequency Rationale Coughing, vomiting During * The presence of these symptoms during or substernal pain administration administration may indicate serious adverse effects and therapy should be discontinued immediately. Renal function Periodically * If renal function deteriorates therapy may need to be stopped. Renal impairment may lead to high antimony plasma levels and increased renal and cardiotoxicity. Other: Anorexia, vomiting, nausea, malaise, arthralgia and myalgia, headache, lethargy, and pancreatitis. Action in case of Antidote: Dimercaprol has been reported to be effective as a chelating agent in overdose the treatment of intoxication with antimony compounds (see the Dimercaprol monograph). This assessment is based on the full range of preparation and administration options described in the monograph. It acts as a sulfur-donating substrate for the enzyme rhodanese, which catalyses the conversion of cyanide to relatively non-toxic thiocyanate, and thus accelerates the detoxification of cyanide. Pre-treatment checks * It is important to be aware whether any cyanide antidote therapy has been given in the pre- hospital setting as repeat doses of some antidotes can cause serious side-effects. Mild poisoning (nausea, dizziness, drowsiness, hyperventilation, anxiety): * Observe. Severe poisoning (coma, fixed dilated pupils, cardiovascular collapse, respiratory failure, cyanosis): If dicobalt edetate is available: As well as other supportive measures: * Give 300mg (20mL) of 1. If a second dose of dicobalt edetate is given, there is "risk of cobalt toxicity but only if the diagnosis is not cyanide poisoning. Technical information Incompatible with Hydroxocobalamin Compatible with Not relevant pH 7--9 Sodium content Contains sodium, but not relevant in an emergency situation. This assessment is based on the full range of preparation and administration options described in the monograph. Add the required dose to at least 50mL of compatible infusion fluid (usually 100mL NaCl 0. Inspect visually for particulate matter or discolor- ation prior to administration and discard if present.