By B. Kalan. Crichton College.
It acts rapidly to raise blood glucose levels and arouse the than SC client purchase 160 mg kamagra super overnight delivery. If the client is at home or elsewhere kamagra super 160mg cheap, glucagon may be given • Drug interactions that decrease blood glucose levels if available and there is someone to inject it. A family member or • Increased physical exertion roommate may be taught to give glucagon SC or IM. Glucagon is a pan- Hormones That Raise Blood Sugar creatic hormone that increases blood sugar by converting liver Normally, when hypoglycemia occurs, several hormones (glucagon, glycogen to glucose. It is effective only when liver glycogen is pres- epinephrine, growth hormone, and cortisol) work to restore and ent. Some clients cannot respond to glucagon because glycogen maintain blood glucose levels. Glucagon and epinephrine, the stores are depleted by such conditions as starvation, adrenal insufﬁ- dominant counter-regulatory hormones, act rapidly because they ciency, or chronic hypoglycemia. The hyperglycemic effect of are activated as soon as blood glucose levels start declining. People with diabetes who develop hypoglycemia may have Caution is needed in the treatment of hypoglycemia. Although impaired secretion of these hormones, especially those with type the main goal of treatment is to relieve hypoglycemia and restore the 1 diabetes. The client having a hypoglycemic re- cretion of epinephrine also occurs in people who have been action should not use it as an excuse to eat high-caloric foods or treated with insulin for several years. Health care personnel caring for the client creases tachycardia, a common sign of hypoglycemia, and may should avoid giving excessive amounts of glucose. Posthypoglycemia Care The Conscious Client Once hypoglycemia is relieved, the person should have a snack or Treatment of hypoglycemic reactions consists of immediate ad- a meal. Slowly absorbed carbohydrate and protein foods, such as ministration of a rapidly absorbed carbohydrate. For the conscious milk, cheese, and bread, are needed to replace glycogen stores in client who is able to swallow, the carbohydrate is given orally. In addition, the episode needs to include: be evaluated for precipitating factors so that these can be mini- • Two sugar cubes or 1 to 2 teaspoons of sugar, syrup, honey, mized to prevent future episodes. Repeated episodes mean that the or jelly therapeutic regimen and client compliance must be re-evaluated • Two or three small pieces of candy or eight Lifesaver candies and adjusted if indicated. Glitazones tion increases or restores the effectiveness of circulating insulin and results in increased uptake of glucose by pe- • These drugs, pioglitazone and rosiglitazone, are also ripheral tissues and decreased production of glucose by called thiazolidinediones or TZDs and insulin sensitizers. The drugs stimulate exercise or in combination with insulin, metformin, or receptors on muscle, fat, and liver cells. The drugs lower blood sugar by decreasing absorption or production of glucose, by increasing secretion of insulin, or by increasing the effectiveness of available insulin (decreasing insulin resistance). They are also con- should be skipped; if a meal is added, a drug dose traindicated in clients who are hypersensitive to them. Glitazones increase plasma volume and may cause HERBAL AND DIETARY fluid retention and heart failure. In people who did not With most herbs and dietary supplements, even the commonly take a glitazone, 2. Thus, anyone with diabetes who Meglitinides wishes to take an herbal or dietary supplement should consult • Nateglinide and repaglinide are nonsulfonylureas that a health care provider, read product labels carefully, seek the lower blood sugar by stimulating pancreatic secretion of most authoritative information available, and monitor blood insulin. Described • They can be used as monotherapy with diet and exercise below are some products that reportedly affect blood sugar and or in combination with metformin. They are metabolized in the liver; Blood Glucose Levels metabolites are excreted in urine and feces. After a dose of 2 mg is reached, increase dose in increments of 2 mg or less at 1- to 2-week inter- vals, based on blood glucose levels. In combination with insulin, PO 8 mg once daily with the ﬁrst main meal. Alpha-Glucosidase Inhibitors Acarbose (Precose) Delays digestion of carbohydrate foods PO, initially 25 mg, three times daily with ﬁrst bite when acarbose and food are present of main meals; increase at 4- to 8-week intervals in gastrointestinal (GI) tract at the to a maximum dose of 50 mg three times daily same time (for patients weighing under 60 kg) if necessary, depending on 1-h postprandial blood glucose lev- els and tolerance. Clients weighing more than 60 kg may need doses up to 100 mg three times daily (the maximum dose). Miglitol (Glyset) Delays digestion of carbohydrates in the PO, initially 25 mg three times daily with the ﬁrst GI tract bite of each main meal, gradually increased if necessary.
Dysrhythmias are treated according to Advanced causative drug or drugs are unknown cheap kamagra super 160mg line, and the circumstances Cardiac Life Support (ACLS) protocols buy 160mg kamagra super fast delivery. For unconscious patients, as soon as an IV line is es- and may indicate other disease processes. Because of the vari- tablished, some authorities recommend a dose of able presentation of drug intoxication, health care providers naloxone (2 mg IV) for possible narcotic overdose CHAPTER 2 BASIC CONCEPTS AND PROCESSES 25 TABLE 2–2 Antidotes for Overdoses of Selected Therapeutic Drugs Overdosed Drug (Poison) Antidote Route and Dosage Ranges Comments Acetaminophen (see Chap. Give IV slowly, over Infrequently used because of its (atropine; see Chap. If cardiac arrest seems immi- nent, may give the dose as a bolus injection. If amount seizures and correction of of INH unknown, give 5 g; may be acidosis repeated. Lead Succimer Children: PO 10 mg/kg q8h for 5 days Opioid analgesics (Chap. Maximum dose, 30 g/24h (continued) 26 SECTION 1 INTRODUCTION TO DRUG THERAPY TABLE 2–2 Antidotes for Overdoses of Selected Therapeutic Drugs (continued) Overdosed Drug (Poison) Antidote Route and Dosage Ranges Comments Tricyclic antidepressants Sodium bicarbonate IV 1–2 mEq/kg initially, then contin- To treat cardiac dysrhythmias, (see Chap. This group issued treatment guide- fingerstick blood glucose test should be done and, if lines that have also been endorsed by other toxicology hypoglycemia is indicated, 50% dextrose (50 ml IV) organizations. Once the patient is out of immediate danger, a thorough used routinely and that adequate data to support or ex- physical examination and efforts to determine the clude their use are often lacking. Opinions expressed drug(s), the amounts, and the time lapse since exposure by the consensus group and others are described are needed. If the patient is unable to supply needed in- below: formation, interview anyone else who may be able to do Ipecac. Ask about the use of prescription, over-the-counter, may delay administration or reduce effectiveness alcohol, and illicit substances. There are no standard laboratory tests for poisoned pa- bowel irrigation. Ipecac may be used to treat mild poi- although baseline tests of liver and kidney function are sonings in the home, especially in children. Specimens of blood, urine, or gastric should call a poison control center or a health care ﬂuids may be obtained for laboratory analysis. If used, it is most Screening tests for toxic substances are not very beneficial if administered within an hour after in- helpful because test results may be delayed, many sub- gestion of a toxic drug dose. It is contraindicated in less than alert pa- layed to obtain results of a toxicology screen. Identiﬁ- tients unless the patient has an endotracheal tube in cation of an unknown drug or poison is often based on place (to prevent aspiration). If the in- Serum drug levels are needed when acetaminophen, gested agent delays gastric emptying (eg, tricyclic alcohol, digoxin, lithium, aspirin, or theophylline is antidepressants and other drugs with anticholinergic known to be an ingested drug, to assist with treatment. For orally ingested drugs, gastrointestinal (GI) de- after ingestion of pills or capsules, the tube lumen contamination has become a controversial topic. For should be large enough to allow removal of pill frag- many years, standard techniques for removing drugs ments. Sometimes called the universal an- tients, to induce emesis; gastric lavage for patients tidote, it is useful in many poisoning situations. It is with decreased levels of consciousness; activated being used alone for mild or moderate overdoses and charcoal to adsorb the ingested drug in the GI tract; with gastric lavage in serious poisonings. It effec- and a cathartic (usually 70% sorbitol) to accelerate tively adsorbs many toxins and rarely causes compli- elimination of the adsorbed drug. It is most beneﬁcial when given within an whole bowel irrigation (WBI) was introduced as an hour of ingestion of a potentially toxic amount of a additional technique. Its effectiveness de- Currently, there are differences of opinion regard- creases with time and there are inadequate data to sup- ing whether and when these techniques are indicated. These differences led to the convening of a consensus Activated charcoal is usually mixed in water group of toxicologists from the American Academy (about 50 g or 10 heaping tablespoons in 8 oz. Adverse effects in- clude pulmonary aspiration and impaction of the Answer: Grapefruit juice interacts with many medications, including charcoal–drug complex. The drug level of felodipine increases because the If used with whole bowel irrigation, activated grapefruit juice inhibits the isozyme of cytochrome P450, which is important in the metabolism of felodipine. As the blood level in- charcoal should be given before the WBI solution is creases, serious toxic effects can occur.
Transcranial Electrical and Magnetic Stimulation of the Brain magnetic stimulation discount 160 mg kamagra super free shipping, fMRI buy generic kamagra super 160 mg on line, NIRS, and other and Spinal Cord. New York: Raven Press, 1993:187– techniques can become the tools of rehabilita- 200. Karl A, Birbaumer N, Lutzenberger W, Cohen LG, tionists for the study of hypotheses about train- Flor H. Carefully designed experi- cortex in upper extremity amputees with phantom ments and clinical trials that incorporate these limb pain. Roux F, Boulanouar K, Ibarrola D, Tremoulet M, proach to neurorehabilitation. Functional MRI and intraoper- ative brain mapping to evaluate brain plasticity in patients with brain tumours and hemiparesis. Cohen L, Ziemann U, Chen R, Classen J, Hallett REFERENCES M, Gerlott C, Butefisch C. PET: The merging of biology and imag- Mechanisms of cortical reorganization in lower-limb ing into molecular imaging. Kosslyn S, Pascual-Leone A, Felician O, Camposano tion of cognitive operations in the human mind. Sci- S, Keenan J, Thompson W, Ganis G, Sukel K, Alpert ence 1988; 240:1627–1631. Safety of different inter-train in- single-photon emission computed tomography. Neurophysiological investigation of the tion and cognitive neuroscience. Flitman S, Grafman J, Wassermann E, Cooper V, Ziemann U, Immisch I, Hallett M. Na- processing during repetitive transcranial magnetic ture 2000; 406:995–998. Enhanced metabolism due to sensory stimulation: Implications visual spatial attention ipsilateral to rTMS-induced for functional brain imaging. Boroojerdi B, Phipps B, Kopylev L, Wharton C, LG tion using magnetic resonance imaging. Brain Res Rev mapping of human central motor representation on 2000; 33:131–154. Hand mo- tional mapping of memory and other nonlinguistic tor cortical area reorganization in stroke: A study cognitive abilities in adults. Neurosci Lett 1997; 224: I, Tusunazawa Y, Suzuki T, Yanagida T, Kubota K. Wikstrom H, Roine R, Aronen H, Salonen O, spectroscopic topography study. Ann Cerebral blood volume and oxygenation among Neurol 2000; 47:353–360. Theory of the relation be- bilitation tasks measured by near-infrared spec- tween human brain activity (MEG) and hand troscopy. Reddy H, Narayanan S, Matthews P, Hoge R, Pike poststroke hemiparesis can identify ipsilateral gener- G, Duquette P. Garnett M, Blamire A, Corkill R, Cadoux-Hudson EEG, and EEG brain mapping. Neurology 1997; resonance spectroscopy in normal-appearing brain 49:277–292. Kamada K, Saguer M, Moller M, Wicklow K, Katen- closed head injury as revealed by event-related po- hauser M, Kober H, Vieth J. Human toencephalography and proton magnetic resonance hippocampal neurons predict how well word pairs spectroscopy. Silvestrini M, Troisi E, Matteis M, Razzano C, Cal- man cerebral cortex. Mapping neuronal activity by imaging during mental activity and recovery from aphasia in intrinsic optical signals. Mirror movements complicate interpre- observed by functional MRI and human intraoper- tation of cerebral activation changes during recov- ative optical imaging. Neurophysiological characterization of language cortices using intraop- correlates of age-related changes in human motor erative optical intrinsic signals. Ann Neurol 2002; specificity of human intraoperative optical intrinsic 51:599–603.
Peroneal-induced group II excitation of quadriceps motoneurones is increased safe kamagra super 160 mg. Such a ﬁnding in the Conclusions upper limb would support a group II contribution In contrast with spasticity discount kamagra super 160mg, studies of the transmis- to the enhanced M2 responses to stretch in wrist sion in many spinal pathways have provided incon- muscles. However, inconsis- Homonymous recurrent inhibition of soleus tent results for the same pathway at the same joint assessed with the paired H reﬂex technique is not havebeenreported(e. Afurtherfactorcouldbethatthediseaseprocess Reduction of transcortical inhibitory is not homogeneous in different patients. So too is the cutaneous inhibition of the MEP in the abductor pollicis brevis, though this Decreased modulation of stretch-induced can be reversed to facilitation (Delwaide & Olivier, group II excitation during upright stance 1990). These two cutaneous inhibitory effects act Responses produced by tilt of the platform through transcortical loops (cf. How- of these responses, particularly in the tibialis ante- ever, in functional terms, the major abnormality rior, when standing and holding onto a stable frame. Thisabnormalitywouldcontributetotheloss icantly with the severity of the disease (Schieppati & ofappropriateposturalreﬂexesofthesepatientsand Nardone, 1991; Chapter 7,p. Responses produced by backward translation The amplitude of group II-mediated medium- Abnormal modulation of reciprocal inhibition latency responses in the gastrocnemius medialis during voluntary movement produced by backward translation of the body is decreased in parkinsonian patients. This reduc- It has been suggested that the basal ganglia inhibit tion may partially be attributed to the slower muscle contractions that are inappropriate for accu- perturbation-induced ankle rotation velocity result- rate voluntary movement, and that a failure of ing from the greater stiffness of the muscle (cf. This hypothesis has prompted experi- stretchreﬂexsensitivity(Dietz,Berger&Horstmann, ments investigating changes in reciprocal inhibition 1988). In parkinsonian patients, itation of the soleus H reﬂex produced by TMS was there is failure of this modulation of the gating of reduced and, in some cases, reversed to inhibition. From animal experiments, it is likely that the cess that generates the excitatory command to ankle gating is monoaminergic and arises from the locus extensors also reaches the antagonist dorsiﬂexors coeruleus. In this respect, intracortical inhibitory systems abnormal effect of TMS is correlated with the motor are dysfunctional in parkinsonian patients (e. These ﬁnd- tion might also involve the reciprocal inhibition by ings suggest that control of reciprocal Ia inhibition muscle afferents of cortical neurones driving antag- mediatedthroughthecorticospinalsystemisabnor- onistic muscles seen in normal subjects (Bertolasi mal in parkinsonian patients (see below). This modulation is almost ated through Ia inhibitory interneurones (ankle) or completely absent on the more affected side of group I inhibitory interneurones (wrist), does not parkinsonian patients and is reduced on the less undergo normal modulation during voluntary con- affected side (Meunier et al. This is due to a loss of the corticospinal ity in the control of non-reciprocal group I inhi- control of the relevant spinal interneurones caused bition was correlated weakly with the axial signs by an abnormality upstream of the origin of corti- score, but not with akinesia or rigidity. The resulting disorder of the agonist– mal suppression of the non-reciprocal group I inhi- antagonist activation pattern probably underlies bition of FCR motoneurones at the onset of wrist some of the difﬁculty that parkinsonian patients ﬂexion is thought to be due to corticospinal facili- have in performing discrete movements. Thus, the suppres- sion of this effect in parkinsonian patients might Increased propriospinal transmission result, here also, from abnormal descending control The component of the descending command for of group I inhibition between antagonists mediated movement relayed through cervical propriospinal through the corticospinal system. Experimentsusingtranscranialelectricalstim- (i) was not correlated with the severity of symptoms; ulation (Dick et al. Increasedtransmissionofthedescendingcommand JournalofNeurology,NeurosurgeryandPsychiatry,64,628– through propriospinal neurones might result from 35. Archives of Neurology, 8, input from muscle and cutaneous afferents to 591–6. Exaggerationofknee-jerk designed to smooth movement execution and/or to following spinal hemisection in monkeys. Brain Research, overcome the difﬁculty of these patients in relax- 107, 471–85. Stretch reﬂexes in the upper limb basal ganglia, so that it can no longer manifest itself of spastic man. Journal of Neurology, Neurosurgery and when there is extreme dopaminergic denervation. In Progress in Clinical Neu- There is, as yet, no unifying picture of the changes rophysiology,vol. Presynaptic inhibi- This is not surprising given that the primary pathol- tionandhomosynapticdepression:Acomparisonbetween ogyisnotinthespinalcord. Ontheotherhand,there lowerandupperlimbsinnormalsubjectsandpatientswith is strong evidence that abnormal descending con- hemiplegia. Effect of intrathecal baclofen on the movement in parkinsonian patients.
8 of 10 - Review by B. Kalan
Votes: 229 votes
Total customer reviews: 229