Vomiting or nasogastric (NG) suction generates metabolic alkalosis by the loss of gastric secretions, which are rich in hydrochloric acid (HCl). Whenever a hydrogen ion is excreted, a bicarbonate ion is gained in the extracellular space.
Table of Contents
Can bulimia cause metabolic acidosis?
Patients who purge by vomiting may present with metabolic alkalosis (elevated serum bicarbonate levels) due to volume contraction.
Why does bulimia cause electrolyte imbalance?
Laxative abusers can develop severe constipation on withdrawal of laxatives, related to damage to the myenteric plexus. The typical electrolyte abnormalities associated with bulimia are hypokalemia and metabolic acidosis.
Why is potassium low in bulimia?
Various side effects come along with purging behaviors. Each time you vomit, you lose fluid as well as food. You also lose the salts and electrolytes in your meals through your vomiting episodes. Both can lead to electrolyte imbalances.
Why is bicarbonate high in metabolic alkalosis?
First, and most obvious, there is loss of potassium in the purged gastric contents, excessive stool from laxative abuse, or in the urine through diuretic abuse. Second, chronic purging results in intravascular fluid depletion.
What causes metabolic alkalosis?
In metabolic alkalosis there is excess of bicarbonate in the body fluids. It can occur in a variety of conditions. It may be due to digestive issues, like repeated vomiting, that disrupt the blood’s acid-base balance. It can also be due to complications of conditions affecting the heart, liver and kidneys.
What is the most significant feature of bulimia?
Metabolic alkalosis is caused by too much bicarbonate in the blood. It can also occur due to certain kidney diseases. Hypochloremic alkalosis is caused by an extreme lack or loss of chloride, such as from prolonged vomiting.
What labs should be checked for bulimia?
- Comprehensive blood chemistry panel: This is important in detecting possible occult metabolic complications of bulimia.
- Complete blood cell count: This is used to exclude anemia or other occult hematologic abnormalities.
- Urinalysis: Urine specific gravity may reflect the state of hydration.
Which acid base disorder would be most likely to occur in a patient with bulimia?
Repeated episodes of eating abnormally large amounts of food in one sitting. Feeling a loss of control during bingeing — like you can’t stop eating or can’t control what you eat. Forcing yourself to vomit or exercising too much to keep from gaining weight after bingeing.
How does vomiting affect electrolytes?
The most common acid-base abnormality found in bulimia nervosa is a metabolic alkalosis (bicarbonate >28 mEq/L).
What deficiencies does bulimia cause?
Electrolyte and water loss Excessive vomiting, especially over a prolonged period of time, leads to excess loss of water and electrolytes from the body. Electrolytes such as sodium, potassium, calcium, magnesium, bicarbonates and chloride ions are essential for normal bodily functions.
What ions are lost in vomiting?
Bulimia can eventually lead to physical problems associated with not getting the right nutrients, vomiting a lot, or overusing laxatives. Possible complications include: feeling tired and weak. dental problems – stomach acid from persistent vomiting can damage tooth enamel.
Why is amylase increased in bulimia?
The vomiting of gastric or intestinal contents most commonly involves the loss of fluid that contains chloride, potassium, sodium, and bicarbonate. The sequelae of these losses include dehydration along with hyponatremia, hypochloremia, and hypokalemia.
How can bulimia cause dehydration?
Hyperamylasemia, which has been reported in patients with the eating disorders anorexia nervosa and bulimia, generally has been thought to result from pancreatitis.
Does bulimia cause magnesium deficiency?
Circulatory system. Frequent purging can cause dehydration. This leads to weak muscles and extreme fatigue. It can also throw your electrolytes out of balance and put strain on your heart.
Why does vomiting cause metabolic alkalosis?
Frequent purging can cause malnutrition, especially low magnesium. A magnesium deficiency can also cause calcium and potassium deficiencies, as magnesium helps absorb and transport these electrolytes through the body. Symptoms of mild hypomagnesemia include: Twitches, especially in the facial muscles.
How does vomiting cause metabolic acidosis?
A bicarbonate level that is higher or lower than normal may mean that the body is having trouble maintaining its acid-base balance, either by failing to remove carbon dioxide through the lungs or the kidneys or perhaps because of an electrolyte imbalance, particularly a deficiency of potassium.
Why does Bicarb increase in vomiting?
Vomiting causes changes in acid base balance due to loss of chloride ions from the stomach, which can lead to an increase of HCO3 in the extracellular fluid. Our patient had her first episode of CVS when she was 3 years old and each episode of CVS is associated with metabolic acidosis.
What is the most common cause of alkalosis?
Hydrogen loss can occur from the gastrointestinal tract or in the urine. In the presence of vomiting and aspiration of gastric contents, the normal stimulus to the production of the bicarbonate is eliminated which in turn leads to increased levels of bicarbonate in the blood and thus the resulting metabolic alkalosis.
What happens when the serum bicarbonate level increases?
The most common causes are volume depletion (particularly when involving loss of gastric acid and chloride (Cl) due to recurrent vomiting or nasogastric suction) and diuretic use. Metabolic alkalosis involving loss or excess secretion of Cl is termed chloride-responsive.
What are the three essential features of bulimia nervosa?
Patients with increased serum bicarbonate exhibited increased ICU LOS, more days on mechanical ventilation and higher hospital mortality. After multivariate adjustment, each 5-mEq/l increment in the serum bicarbonate level above 30 mEq/l was associated with an odds ratio of 1.21 for hospital mortality.
What are 3 warning signs of bulimia?
- Episodes of binge eating.
- Self-induced vomiting.
- Smelling like vomit.
- Misuse of laxatives and diuretics.
- Complaining about body image.
- Expressing guilt or shame about eating.
- Depression.
- Irritability.
Why is anorexia harder than bulimia?
Bulimia Nervosa The essential features are binge eating and inappropriate compensatory behavior such as fasting, vomiting, using laxatives, or exercising to prevent weight gain.
What is the pathophysiology of bulimia?
While more common than anorexia, bulimia nervosa may be more difficult for primary care physicians, school officials, parents and other loved ones to detect because patients are often of normal weight and may not disclose their abnormal eating behaviors.
Can a dentist tell if your bulimic?
Pathophysiology of Bulimia Nervosa Extremely rarely, the stomach ruptures or the esophagus is torn during a binge or purge episode, leading to life-threatening complications. Because substantial weight loss does not occur, other serious physical complications that often occur with anorexia nervosa are not present.