SABAX NEONATALYTE WITH GLUCOSE 10%

Indications

• Fluid and electrolyte imbalances
• Hypoglycemia
• Nutritional supplementation
• Diabetic emergencies

Dosage

Children: Refer to the BNF for Children for appropriate paediatric dosing guidelines.

Adults: The dosage varies based on the clinical condition and specific formulation used. For intravenous administration, consult product literature for precise dosing.

Mechanism of action

Glucose supplies energy to tissues by undergoing glycolysis, which begins with its phosphorylation by hexokinase to form glucose 6-phosphate. This activates glucose for breakdown, ultimately generating ATP and NADH. The aerobic metabolism of glucose can yield up to 36 ATP molecules. Glucose also serves as a precursor for other biomolecules and regulates various physiological processes including gene transcription and hormone secretion.

Pharmacodynamics

Glucose is an obligatory energy source for cellular activities and plays a significant role in metabolic signaling. It is oxidized to yield energy through glycolysis, the citric acid cycle, and oxidative phosphorylation. Glucose can be converted into fat for energy storage and is stored as glycogen in the liver and muscles. Its administration increases blood glucose levels and stimulates insulin secretion, particularly through oral routes that activate gut incretin hormones.

Pharmacokinetics

Glucose is rapidly absorbed from the gastrointestinal tract or directly into the bloodstream when administered intravenously. It is distributed widely throughout the body and metabolized primarily in tissues requiring energy. The body maintains glucose homeostasis through regulatory mechanisms involving insulin and glucagon. Excess glucose can be stored as glycogen or converted to triglycerides for long-term energy storage.

Adverse effects

• Hyperglycemia
• Increased osmolarity
• Fluid overload
• Electrolyte imbalances

Interactions

• Insulin - may require dose adjustments

Precautions

• Use with caution in patients with diabetes mellitus
• Monitor blood glucose levels in patients receiving parenteral glucose
• Adjust dosage in renal impairment

Pregnancy

Glucose is generally considered safe in pregnancy; however, monitoring is advised, especially in diabetic patients.

Breast-feeding

Glucose is considered safe during breastfeeding, as it is a natural sugar found in breast milk.

Storage

Store at room temperature, away from light. Avoid freezing.

Formulations

• Glucose 5% solution for infusion
• Glucose 10% solution for infusion
• Glucose 0.9% solution for injection
• Glucose sodium chloride combination solutions

Indications

• Assessment of tissue hypoxia
• Monitoring of metabolic acidosis
• Management of certain metabolic disorders
• Support in critical care settings

Dosage

Children: Dosage varies depending on clinical condition and should be determined by healthcare professionals based on individual patient needs and response to treatment.

Adults: Dosage varies depending on clinical condition and should be determined by healthcare professionals based on individual patient needs and response to treatment.

Mechanism of action

Lactate acts as a substrate for gluconeogenesis and can be converted back into glucose in the liver. It serves as an energy source for various tissues, including the heart and brain, particularly under conditions of low oxygen availability. Lactate also plays a role in regulating pH and can influence the overall metabolic state of tissues.

Pharmacodynamics

Lactate contributes to the regulation of acid-base balance in the body. It helps in the buffering of hydrogen ions, which can mitigate metabolic acidosis. The presence of lactate can stimulate the release of insulin, which facilitates glucose uptake in peripheral tissues. Moreover, lactate has been recognized for its role in signaling within various metabolic pathways, impacting energy production and utilization.

Pharmacokinetics

Lactate is produced in the body primarily during anaerobic glycolysis and is then transported to the liver via the bloodstream. It has a rapid clearance rate, with the liver converting it back to glucose through gluconeogenesis. The half-life of lactate in the bloodstream can vary based on metabolic conditions and tissue oxygenation status. Under normal physiological conditions, lactate levels are maintained within a narrow range.

Pregnancy

Lactate is generally considered safe during pregnancy, but it should be used cautiously and only when necessary, as with any medical treatment.

Breast-feeding

Lactate is considered safe during breastfeeding, but it should be used under medical supervision.

Storage

Store at room temperature, away from light and moisture. Keep out of reach of children.

Formulations

• Intravenous solution
• Oral solution

Indications

• Magnesium deficiency
• Hypertension
• Cardiac arrhythmias
• Eclampsia
• Severe asthma attacks
• Migraine prophylaxis

Dosage

Children: Refer to specific guidelines or the BNF for Children for detailed dosing information.

Adults: Refer to specific guidelines or the BNF for detailed dosing information.

Mechanism of action

Magnesium acts as a cofactor for more than 300 enzymatic reactions in the body. It helps regulate calcium levels, which is essential for muscle contraction and nerve function. Magnesium also stabilizes ATP (adenosine triphosphate), the energy currency of the cell, and is involved in neurotransmitter release and muscle relaxation.

Pharmacodynamics

Magnesium influences neuromuscular transmission and muscle excitability. It helps maintain normal heart rhythm and is involved in the regulation of blood pressure. In the nervous system, magnesium exerts a calming effect, which can help alleviate symptoms of anxiety and reduce the risk of migraines.

Pharmacokinetics

Magnesium is absorbed primarily in the small intestine, with the absorption rate varying depending on dietary intake and the presence of other dietary components. The absorbed magnesium is distributed throughout the body, with the majority stored in bones, muscles, and soft tissues. Renal excretion is the primary route of elimination, and the kidneys play a crucial role in maintaining magnesium homeostasis.

Contra-indications

• Severe renal impairment
• Myasthenia gravis
• Heart block
• Addison's disease

Adverse effects

• Diarrhea
• Nausea
• Vomiting
• Abdominal cramping
• Hypotension
• Respiratory depression
• Bradycardia
• Flushing

Interactions

• Calcium channel blockers may enhance the hypotensive effect
• Digoxin may have increased risk of toxicity
• Neuromuscular blocking agents may have additive effects
• Antibiotics (e.g., tetracyclines, quinolones) may have reduced absorption

Precautions

• Use with caution in patients with renal dysfunction
• Monitor serum magnesium levels during therapy
• Assess for signs of hypermagnesemia, especially in patients with renal impairment

Pregnancy

Magnesium is generally considered safe during pregnancy, but high doses should be avoided unless prescribed.

Breast-feeding

Magnesium is excreted in breast milk, but is not expected to cause adverse effects in breastfed infants.

Storage

Store in a cool, dry place away from direct sunlight. Keep out of reach of children.

Formulations

• Magnesium sulfate injection
• Magnesium oxide tablets
• Magnesium citrate oral solution
• Magnesium chloride oral solution

Indications

• Hypophosphatemia
• Calcium phosphate deficiency
• Nutritional supplementation
• pH adjustment in pharmaceutical formulations

Dosage

Children: Refer to BNF for Children for specific dosing recommendations based on indication.

Adults: Refer to clinical guidelines or BNF for specific dosing recommendations based on indication.

Mechanism of action

Phosphoric acid provides phosphate ions that are critical for numerous biochemical reactions in the body. These phosphate ions are involved in the formation of ATP, which is essential for energy transfer within cells. The acid itself dissociates in aqueous solutions, releasing hydrogen ions and contributing to pH levels, which can affect enzymatic activities and cellular functions.

Pharmacodynamics

Phosphoric acid acts by replenishing phosphate levels in the body, which can be important in various physiological processes including energy metabolism, bone mineralization, and the synthesis of nucleic acids. Its effects on pH regulation can also influence metabolic pathways, particularly in managing acidosis or alkalosis.

Pharmacokinetics

Phosphoric acid is generally administered orally or intravenously, depending on the therapeutic application. Following administration, it is absorbed in the gastrointestinal tract, with phosphate ions distributed throughout the body. The kidneys play a significant role in regulating phosphate homeostasis, with excess phosphate being excreted in urine. The half-life of phosphoric acid is not well defined, as it is rapidly metabolized and utilized in various metabolic pathways.

Adverse effects

• Nausea
• Vomiting
• Diarrhea
• Abdominal pain
• Hypophosphatemia

Precautions

• Use with caution in patients with renal impairment
• Monitor phosphate levels in patients receiving long-term therapy
• Consider potential for gastrointestinal irritation

Pregnancy

Phosphoric acid is generally considered safe in pregnancy when used in recommended doses, but caution is advised.

Breast-feeding

Phosphoric acid is excreted in breast milk, use with caution and under medical supervision.

Storage

Store at room temperature, away from moisture and heat.

Formulations

• Oral solutions
• Tablets
• Syrups

Mechanism of action

Glucose supplies most of the energy to all tissues by generating energy molecules ATP and NADH during a series of metabolism reactions called glycolysis. Glycolysis can be divided into two main phases where the preparatory phase is initiated by the phosphorylation of glucose by hexokinase to form glucose 6-phosphate. The addition of the high-energy phosphate group activates glucose for the subsequent breakdown in later steps of glycolysis and is the rate-limiting step. Products end up as substrates for following reactions, to ultimately convert C6 glucose molecule into two C3 sugar molecules. These products enter the energy-releasing phase where the total of 4ATP and 2NADH molecules are generated per one glucose molecule. The total aerobic metabolism of glucose can produce up to 36 ATP molecules. These energy-producing reactions of glucose are limited to D-glucose as L-glucose cannot be phosphorylated by hexokinase. Glucose can act as precursors to generate other biomolecules such as vitamin C. It plays a role as a signaling molecule to control glucose and energy homeostasis. Glucose can regulate gene transcription, enzyme activity, hormone secretion, and the activity of glucoregulatory neurons. The types, number, and kinetics of glucose transporters expressed depends on the tissues and fine-tunes glucose uptake, metabolism, and signal generation to preserve cellular and whole body metabolic integrity. Vascular calcification is a hallmark of type 2 diabetes. Glucose stimulates calcification in culture of vascular smooth muscle cells (VSMCs) but the underlying mechanisms remain obscure. We observed that high glucose levels stimulated mouse and human VSMC trans-differentiation into chondrocytes, with increased levels of Sox9, type II collagen, glycosaminoglycan and Runx2 expression, and increased alkaline phosphatase activity and mineralization. These effects were associated with increased expression of IL-1beta, which stimulated alkaline phosphatase and calcification, suggesting that glucose induces chondrocyte differentiation of VSMCs, possibly through IL-1beta activation.

Pharmacodynamics

Blood glucose is an obligatory energy source for humans involved in various cellular activities, and it also acts as a signaling molecule for diverse glucose-sensing molecules and proteins. Glucose undergoes oxidation into carbon dioxide, water, and yields energy molecules in the process of glycolysis and subsequent citric cycle and oxidative phosphorylation. Glucose is readily converted into fat in the body which can be used as a source of energy as required. Under a similar conversion into storage of energy, glucose is stored in the liver and muscles as glycogen. Glucose stores are mobilized in a regulated manner, depending on the tissues' metabolic demands. Oral glucose tablets or injections serve to increase the supply of glucose and oral glucose administration is more effective in stimulating insulin secretion because it stimulates the incretin hormones from the gut, which promotes insulin secretion.