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Pathophysiology- Restrictive Cardiomyopathy
Pathophysiology
The patient's cardiomyopathy is restricted. The most common cause of this illness, which is characterized by a damaged heart and accompanying cardiac failure, is an invasive systemic disease like sarcoidosis or amyloidosis.
A "stiff" heart is caused by infiltration of cardiac tissue, and it may enlarge to make up for diminished muscle compliance.
Diastolic dysfunction, in which stiffened ventricles are unable to relax fully, results in inadequate diastolic filling, is linked to the majority of symptoms and poor perfusion. Patients typically develop symptoms over time, like in the vignette that is being provided. Common observations include fluid retention in the lungs and peripheral extremities due to the global infiltrative process, which affects both sides of the heart. The myocardium is trying to make up for less filling, as evidenced by the echocardiographic finding of four chamber hypertrophy. Stiff cardiac muscle causes a persistent rise in left ventricular filling pressure, which leads to pulmonary hypertension.
The patient's lower LV ejection fraction indicates a problem with systolic function. The goals of medical therapy are to eliminate extra fluid and lessen the strain on the heart. Sarcoidosis is one of the underlying medical problems that need ongoing therapy. The best course of action when medical therapy starts to fail is cardiac transplantation.
Pathophysiology
The patient's cardiomyopathy is restricted. The most common cause of this illness, which is characterized by a damaged heart and accompanying cardiac failure, is an invasive systemic disease like sarcoidosis or amyloidosis.
A "stiff" heart is caused by infiltration of cardiac tissue, and it may enlarge to make up for diminished muscle compliance.
Diastolic dysfunction, in which stiffened ventricles are unable to relax fully, results in inadequate diastolic filling, is linked to the majority of symptoms and poor perfusion. Patients typically develop symptoms over time, like in the vignette that is being provided. Common observations include fluid retention in the lungs and peripheral extremities due to the global infiltrative process, which affects both sides of the heart. The myocardium is trying to make up for less filling, as evidenced by the echocardiographic finding of four chamber hypertrophy. Stiff cardiac muscle causes a persistent rise in left ventricular filling pressure, which leads to pulmonary hypertension.
The patient's lower LV ejection fraction indicates a problem with systolic function. The goals of medical therapy are to eliminate extra fluid and lessen the strain on the heart. Sarcoidosis is one of the underlying medical problems that need ongoing therapy. The best course of action when medical therapy starts to fail is cardiac transplantation.
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Pathology - Hypertrophic Obstructive Cardiomyopathy
Pathophysiology
Myosin heavy chains, which are sarcomere proteins, are impacted by this autosomal dominant disease. The outcome, known as "myocardial disarray," is sarcomere unit enlargement that disrupts normal heart muscle alignment at the microscopic level. This disorder affects 0.2% to 0.5% of the general population and is present in all racial groupings.
The most typical symptoms include syncope, palpitations, dyspnea, chest discomfort, and, in certain cases, abrupt cardiac death. Up to 25% of people may experience outflow obstruction from the left ventricle during rest due to a hypertrophic cardiac septum, however this condition typically manifests itself dynamically (ventricular volume dependently) with an increase in cardiac output during exercise. Ventricular outflow obstruction resulting from asymmetric septal hypertrophy impairs the systolic anterior motion of larger mitral valve leaflets during periods of decreased ventricular fullness.
When the arterial pressure is initially high, obstructive mitral valve position suppresses the pulse, and outflow forces ultimately overcome it, a bifid carotid pulse can be observed. The murmur's increased loudness during the Valsalva maneuver is a highly distinctive feature that reveals the obstruction's dynamic nature.
Optimizing cardiac function can be achieved through medical therapy and awareness of the disease; for most people, avoiding dynamic outflow blockage (such as intense exercise) is advised.
Pathology - Hypertrophic Obstructive Cardiomyopathy
Pathophysiology
Myosin heavy chains, which are sarcomere proteins, are impacted by this autosomal dominant disease. The outcome, known as "myocardial disarray," is sarcomere unit enlargement that disrupts normal heart muscle alignment at the microscopic level. This disorder affects 0.2% to 0.5% of the general population and is present in all racial groupings.
The most typical symptoms include syncope, palpitations, dyspnea, chest discomfort, and, in certain cases, abrupt cardiac death. Up to 25% of people may experience outflow obstruction from the left ventricle during rest due to a hypertrophic cardiac septum, however this condition typically manifests itself dynamically (ventricular volume dependently) with an increase in cardiac output during exercise. Ventricular outflow obstruction resulting from asymmetric septal hypertrophy impairs the systolic anterior motion of larger mitral valve leaflets during periods of decreased ventricular fullness.
When the arterial pressure is initially high, obstructive mitral valve position suppresses the pulse, and outflow forces ultimately overcome it, a bifid carotid pulse can be observed. The murmur's increased loudness during the Valsalva maneuver is a highly distinctive feature that reveals the obstruction's dynamic nature.
Optimizing cardiac function can be achieved through medical therapy and awareness of the disease; for most people, avoiding dynamic outflow blockage (such as intense exercise) is advised.
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Pathology - Cardiopulmonary Arrest
Pathophysiology
This illness is brought on by an abrupt blockage of a coronary artery, which causes an instantaneous ischemia of the heart tissue that the artery supplies. Electrolyte anomalies may change the usual membrane potential. Myocardial cells that are hypoxic undergo hyperautomaticity, in which many cells function as pacemakers. While hypoxic tissue is excitable and will contract erratically, scarred and dying tissue will not react to this electrical stimulation.
Ventricular fibrillation, which is the outcome of myocardial ischemia, is characterized by an irregular contraction of the cardiac muscle, which causes the tissue to quiver instead of the ventricles contracting in an orderly manner. A short while later, this unproductive rhythm gave way to asystole, or the lack of heart contraction.
The patient's ECG abnormalities (ischemia in leads V2-V6) points to a possible acute blockage of the left anterior descending artery, which delivers blood to the left ventricle's anterior surface. Reduced blood pressure in the context of an elevated pulse rate and low left ventricular ejection fraction is indicative of a markedly diminished cardiac output brought on by an uncoordinated and inefficient left ventricle contraction.
Pathophysiology
This illness is brought on by an abrupt blockage of a coronary artery, which causes an instantaneous ischemia of the heart tissue that the artery supplies. Electrolyte anomalies may change the usual membrane potential. Myocardial cells that are hypoxic undergo hyperautomaticity, in which many cells function as pacemakers. While hypoxic tissue is excitable and will contract erratically, scarred and dying tissue will not react to this electrical stimulation.
Ventricular fibrillation, which is the outcome of myocardial ischemia, is characterized by an irregular contraction of the cardiac muscle, which causes the tissue to quiver instead of the ventricles contracting in an orderly manner. A short while later, this unproductive rhythm gave way to asystole, or the lack of heart contraction.
The patient's ECG abnormalities (ischemia in leads V2-V6) points to a possible acute blockage of the left anterior descending artery, which delivers blood to the left ventricle's anterior surface. Reduced blood pressure in the context of an elevated pulse rate and low left ventricular ejection fraction is indicative of a markedly diminished cardiac output brought on by an uncoordinated and inefficient left ventricle contraction.
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Pathology - Wolff-Parkinson-White Syndrome
Pathophysiology
Pre-excitation supraventricular tachycardia, as this disorder is known, is brought on by an aberrant auxiliary conduction route that connects the ventricles and atria. This channel (Kent accessory bundle) is where electrical signals can flow and produce PVC. The most typical signs and symptoms of this illness include syncope or near-syncope, dizziness, lightheadedness, and paroxysmal episodes of palpitations. A "delta" wave on the ECG, which manifests as an upward "slurring" of the QRS complex, is used to make the diagnosis. A brief PR interval is also visible on the ECG. These two results actually show that the ventricle is excited prematurely by an abnormal atrial impulse that lacks normal AV nodal regulation. Under this circumstance, sudden death is uncommon. The ailment is frequently observed in youth, and its definitive treatment is ablation of the auxiliary route.
Pathophysiology
Pre-excitation supraventricular tachycardia, as this disorder is known, is brought on by an aberrant auxiliary conduction route that connects the ventricles and atria. This channel (Kent accessory bundle) is where electrical signals can flow and produce PVC. The most typical signs and symptoms of this illness include syncope or near-syncope, dizziness, lightheadedness, and paroxysmal episodes of palpitations. A "delta" wave on the ECG, which manifests as an upward "slurring" of the QRS complex, is used to make the diagnosis. A brief PR interval is also visible on the ECG. These two results actually show that the ventricle is excited prematurely by an abnormal atrial impulse that lacks normal AV nodal regulation. Under this circumstance, sudden death is uncommon. The ailment is frequently observed in youth, and its definitive treatment is ablation of the auxiliary route.
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Pathology - The Toxicology of Digitalis
Pathophysiology
This disorder arises when serum levels of digitalis, which is administered as a positive inotropic drug to certain patients suffering from congestive heart failure, above a very specific therapeutic range. Fatigue, nausea, vomiting, abdominal discomfort, and agitation or disorientation are typical symptoms. ECG abnormalities are common and can take many different forms. There may be ventricular tachycardia, bradycardia, rapid idioventricular rhythm, or paroxysmal atrial tachycardia with heart block.
Low serum potassium levels aggravate the illness and the arrhythmias that follow. Digoxin immune Fab therapy is recommended.
However, lidocaine, phenytoin, and magnesium can be utilized in the event that immunological Fab is not accessible.
Pathophysiology
This disorder arises when serum levels of digitalis, which is administered as a positive inotropic drug to certain patients suffering from congestive heart failure, above a very specific therapeutic range. Fatigue, nausea, vomiting, abdominal discomfort, and agitation or disorientation are typical symptoms. ECG abnormalities are common and can take many different forms. There may be ventricular tachycardia, bradycardia, rapid idioventricular rhythm, or paroxysmal atrial tachycardia with heart block.
Low serum potassium levels aggravate the illness and the arrhythmias that follow. Digoxin immune Fab therapy is recommended.
However, lidocaine, phenytoin, and magnesium can be utilized in the event that immunological Fab is not accessible.
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Pathology - Hyperkalemia
Pathophysiology
The patient had substantially compromised renal function; skipping scheduled dialysis resulted in fluid overload and hyperkalemia. He needs dialysis right away because his body has accumulated fluid and poisons. There may be mild hyperventilation, which is an attempt to make up for the metabolic acidosis brought on by insufficient kidney function.
The patient's hyperkalemia, which might result in deadly dysrhythmia, is the reason why the ECG results are very concerning. Moderate hyperkalemia is indicated by elevated (or "peaked") T waves and decreased P wave amplitude in the ECG. More severe electrolyte imbalances can cause the QRS to broaden and the ECG to start looking like a sine wave. Elevated serum potassium levels cause direct effects on the repolarization of the ventricular cell membrane, which leads to problems in conduction. Intravenous calcium is used in this patient's care to stabilize membrane potentials and lower the chance of an arrhythmia.
Additional short-term tactics include the intravenous (IV) infusion of bicarbonate, insulin (with glucose), or beta-2 agonist drugs to lower serum potassium levels and cause an intracellular potassium shift. However, in order to adequately manage this patient's severe condition, emergency dialysis is necessary.
Pathophysiology
The patient had substantially compromised renal function; skipping scheduled dialysis resulted in fluid overload and hyperkalemia. He needs dialysis right away because his body has accumulated fluid and poisons. There may be mild hyperventilation, which is an attempt to make up for the metabolic acidosis brought on by insufficient kidney function.
The patient's hyperkalemia, which might result in deadly dysrhythmia, is the reason why the ECG results are very concerning. Moderate hyperkalemia is indicated by elevated (or "peaked") T waves and decreased P wave amplitude in the ECG. More severe electrolyte imbalances can cause the QRS to broaden and the ECG to start looking like a sine wave. Elevated serum potassium levels cause direct effects on the repolarization of the ventricular cell membrane, which leads to problems in conduction. Intravenous calcium is used in this patient's care to stabilize membrane potentials and lower the chance of an arrhythmia.
Additional short-term tactics include the intravenous (IV) infusion of bicarbonate, insulin (with glucose), or beta-2 agonist drugs to lower serum potassium levels and cause an intracellular potassium shift. However, in order to adequately manage this patient's severe condition, emergency dialysis is necessary.
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Pathology - End Stage Dilated Cardiomyopathy
Pathophysiology
This patient's condition, which is characterized by a damaged myocardium and accompanying cardiac dysfunction, is most frequently caused by ischemic heart disease, which accounts for about 65% of cases. Additional frequent causes of dilated cardiomyopathy include drug-induced (cancer chemotherapy drugs), genetic metabolic problems, neuromuscular diseases, toxins (alcohol) or viral infections. Patients may eventually experience decompensated states of insufficient perfusion, which often involve fluid retention in the abdomen, pulmonary circulation, and peripheral extremities. A constricted pulse pressure is frequently observed, resulting from an inadequate systolic contraction.
The greatly inflated left ventricle is the cause of the displaced point of maximum impulse (PMI), and the failing heart's interruption of optimum flow is the cause of the audible murmur. Due to chronic heart ischemia, decreased ventricular compliance causes the S3 gallop that has been observed. Every bodily system is impacted, and the goal of medical treatment is to eliminate extra fluid and lessen the strain on the heart. The best course of action in cases where the myocardium is as severely injured as this one is is cardiac transplantation.
Pathophysiology
This patient's condition, which is characterized by a damaged myocardium and accompanying cardiac dysfunction, is most frequently caused by ischemic heart disease, which accounts for about 65% of cases. Additional frequent causes of dilated cardiomyopathy include drug-induced (cancer chemotherapy drugs), genetic metabolic problems, neuromuscular diseases, toxins (alcohol) or viral infections. Patients may eventually experience decompensated states of insufficient perfusion, which often involve fluid retention in the abdomen, pulmonary circulation, and peripheral extremities. A constricted pulse pressure is frequently observed, resulting from an inadequate systolic contraction.
The greatly inflated left ventricle is the cause of the displaced point of maximum impulse (PMI), and the failing heart's interruption of optimum flow is the cause of the audible murmur. Due to chronic heart ischemia, decreased ventricular compliance causes the S3 gallop that has been observed. Every bodily system is impacted, and the goal of medical treatment is to eliminate extra fluid and lessen the strain on the heart. The best course of action in cases where the myocardium is as severely injured as this one is is cardiac transplantation.
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Clinical Procedures - Barium Follow-Through
Indications
• Investigation of small bowel pathology, particularly suspected Crohn's disease and strictures. Indications include pain, diarrhea, malabsorption, partial obstruction, anemia
• D Always consider alternatives (e.g. MRI, small bowel enema).
Contraindications
• Absolute: lack of informed consent, complete small bowel obstruction, suspected perforation (a water-soluble contrast may be used instead).
Procedure
The patient drinks barium and the small bowel is intermittently imaged until the barium has reached the caecum. Usually performed by a radiologist.
• The patient is given a mixture of barium to drink
• The exact mixture given to the patient varies between centres and between radiologists. Some add Gastrografin® to the barium, which has been shown to reduce transit time. Many add 20mg of metoclopramide to the mixture which enhances gastric emptying
• Once the barium has been consumed, the patient is asked into the fluoroscopy room and images are taken of the small bowel with the patient lying supine
• Real-time fluoroscopy is employed to assess small bowel motility
• Images are taken every 20-30 minutes until the barium has reached the
colon
• The radiologist may use a 'spoon' or similar radiolucent device to press on the patient's abdomen to separate loops of bowel
• Additional images of the terminal ileum are usually obtained, often with the patient supine and many radiologists also acquire an 'overcouch' plain abdominal radiograph with compression applied to the lower abdomen
• The time taken depends on the small bowel transit time and, although usually an hour, patients are advised to allow up to 3 hours
• After the procedure, the patient may eat and drink as usual but is advised to keep their bowel moving to avoid barium impaction.
Risks
• Leakage of barium through an unsuspected perforation:
• Intraperitoneal barium causes hypovolaemic shock and a 50% mortality. Of those that survive, 30% have adhesions
• Barium impaction (causing large bowel obstruction) or barium appendicitis
• Medication effects
Patient Preparation
• Fasting: nil by mouth for 12 hours before the examination
• Bowel preparation: laxative (usually Picolax®) taken 12 hours before.
Other information
• Metoclopramide aids gastric emptying. Extra-pyramidal side effects may occur, especially in young women and there is a risk of acute dystonic reactions such as oculogyric crisis. Contraindicated in patients with Parkinsonism/Parkinson's disease
• D A barium study will prevent a CT examination of the same area for a period of time as intestinal barium creates dense streak artefact.
Indications
• Investigation of small bowel pathology, particularly suspected Crohn's disease and strictures. Indications include pain, diarrhea, malabsorption, partial obstruction, anemia
• D Always consider alternatives (e.g. MRI, small bowel enema).
Contraindications
• Absolute: lack of informed consent, complete small bowel obstruction, suspected perforation (a water-soluble contrast may be used instead).
Procedure
The patient drinks barium and the small bowel is intermittently imaged until the barium has reached the caecum. Usually performed by a radiologist.
• The patient is given a mixture of barium to drink
• The exact mixture given to the patient varies between centres and between radiologists. Some add Gastrografin® to the barium, which has been shown to reduce transit time. Many add 20mg of metoclopramide to the mixture which enhances gastric emptying
• Once the barium has been consumed, the patient is asked into the fluoroscopy room and images are taken of the small bowel with the patient lying supine
• Real-time fluoroscopy is employed to assess small bowel motility
• Images are taken every 20-30 minutes until the barium has reached the
colon
• The radiologist may use a 'spoon' or similar radiolucent device to press on the patient's abdomen to separate loops of bowel
• Additional images of the terminal ileum are usually obtained, often with the patient supine and many radiologists also acquire an 'overcouch' plain abdominal radiograph with compression applied to the lower abdomen
• The time taken depends on the small bowel transit time and, although usually an hour, patients are advised to allow up to 3 hours
• After the procedure, the patient may eat and drink as usual but is advised to keep their bowel moving to avoid barium impaction.
Risks
• Leakage of barium through an unsuspected perforation:
• Intraperitoneal barium causes hypovolaemic shock and a 50% mortality. Of those that survive, 30% have adhesions
• Barium impaction (causing large bowel obstruction) or barium appendicitis
• Medication effects
Patient Preparation
• Fasting: nil by mouth for 12 hours before the examination
• Bowel preparation: laxative (usually Picolax®) taken 12 hours before.
Other information
• Metoclopramide aids gastric emptying. Extra-pyramidal side effects may occur, especially in young women and there is a risk of acute dystonic reactions such as oculogyric crisis. Contraindicated in patients with Parkinsonism/Parkinson's disease
• D A barium study will prevent a CT examination of the same area for a period of time as intestinal barium creates dense streak artefact.
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Clinical Procedures - Barium Enema
• The following refers to the standard 'double contrast' barium enema.
Indications
• Investigation of colonic pathology. Indications include pain, melaena, anaemia, palpable mass, change in bowel habit, failed colonoscopy, investigation of remaining colon in the case of a known colonic tumour
• • Always consider alternatives (e.g. colonoscopy, CT colonography).
Contraindications
• Absolute: lack of informed consent, possible perforation, pseudomembranous colitis, toxic megacolon, biopsy via rigid sigmoidoscope within 5 days, biopsy via flexible endoscope within 1 day
•Relative: barium meal within 7-14 days, patient frailty or immobility:
• • The procedure requires a large amount of patient cooperation.
The patient must be able to lie flat and to turn over easily
• The patient must be able to retain rectal barium and air.
Procedure
The colon is coated with barium, then inflated with air and images are taken from several different angles. Performed by a radiographer or radiologist.
• The patient lies in the left lateral position on the fluoroscopy table
• The operator may perform a digital rectal examination before beginning
• A rectal tube is placed, attached to a bag of barium sulphate. The barium is run into the colon under x-ray guidance until it reaches the right colon
• The barium is drained
• IV buscopan or, if contraindicated, glucagon is given
• The colon is inflated with air (or with CO, in some centres)
• The patient is instructed to roll and is tilted as images are acquired
• Once the images are obtained, the colon is deflated and the patient can go to the bathroom to empty their bowel and shower if necessary
• The examination may last 15-30 minutes
• The patient should be kept in the department until any medication side effects (e.g. blurred vision) have worn off.
Risks
• Perforation (increased risk in elderly, ulcerating lesions, systemic steroids, hypothyroidism, large bowel obstruction):
• Intraperitoneal barium causes hypovolaemic shock and a 50% mortality. Of those that survive, 30% have adhesions
• Cardiac arrhythmia (secondary to the large bowel distension)
• Medication effects
Patient Preparation
• Iron tablets: stop 5 days before
• Constipating agents: stop 2 days before
• Fasting: low residue diet 2 days before, fluids only on the day before
• Bowel preparation: laxative (usually Picolax® taken at 08:00 and
18:00 on the day before.
Other Information
• Buscopan is given to inhibit intestinal motility. Side effects include blurred vision, dry mouth, and tachycardia:
Contraindicated in angina, untreated closed-angle glaucoma, prostatic hypertrophy, myasthenia gravis, paralytic ileus, and pyloric stenosis
• Glucagon is given if buscopan cannot. Risk of hypersensitivity and is contraindicated in phaeochromocytoma, insulinoma, and glucagonoma
• After the procedure, the patient may eat and drink as usual but is advised to keep their bowel moving to avoid barium impaction
• A barium study will prevent a CT examination of the same area for a period of time as intestinal barium creates dense streak artefact.
Water-Soluble Contrast Examinations
• In the case of recent surgery, suspected perforation, or investigation of a leak, water-based iodinated contrast is used instead of barium.
Examples include Gastrografin®, Urografin®, Niopam®, Omnipaque®
• A single-contrast examination is performed (i.e. the colon is not inflated with air) and many of the standard' views are not included
• No bowel preparation or fasting is needed.
• The following refers to the standard 'double contrast' barium enema.
Indications
• Investigation of colonic pathology. Indications include pain, melaena, anaemia, palpable mass, change in bowel habit, failed colonoscopy, investigation of remaining colon in the case of a known colonic tumour
• • Always consider alternatives (e.g. colonoscopy, CT colonography).
Contraindications
• Absolute: lack of informed consent, possible perforation, pseudomembranous colitis, toxic megacolon, biopsy via rigid sigmoidoscope within 5 days, biopsy via flexible endoscope within 1 day
•Relative: barium meal within 7-14 days, patient frailty or immobility:
• • The procedure requires a large amount of patient cooperation.
The patient must be able to lie flat and to turn over easily
• The patient must be able to retain rectal barium and air.
Procedure
The colon is coated with barium, then inflated with air and images are taken from several different angles. Performed by a radiographer or radiologist.
• The patient lies in the left lateral position on the fluoroscopy table
• The operator may perform a digital rectal examination before beginning
• A rectal tube is placed, attached to a bag of barium sulphate. The barium is run into the colon under x-ray guidance until it reaches the right colon
• The barium is drained
• IV buscopan or, if contraindicated, glucagon is given
• The colon is inflated with air (or with CO, in some centres)
• The patient is instructed to roll and is tilted as images are acquired
• Once the images are obtained, the colon is deflated and the patient can go to the bathroom to empty their bowel and shower if necessary
• The examination may last 15-30 minutes
• The patient should be kept in the department until any medication side effects (e.g. blurred vision) have worn off.
Risks
• Perforation (increased risk in elderly, ulcerating lesions, systemic steroids, hypothyroidism, large bowel obstruction):
• Intraperitoneal barium causes hypovolaemic shock and a 50% mortality. Of those that survive, 30% have adhesions
• Cardiac arrhythmia (secondary to the large bowel distension)
• Medication effects
Patient Preparation
• Iron tablets: stop 5 days before
• Constipating agents: stop 2 days before
• Fasting: low residue diet 2 days before, fluids only on the day before
• Bowel preparation: laxative (usually Picolax® taken at 08:00 and
18:00 on the day before.
Other Information
• Buscopan is given to inhibit intestinal motility. Side effects include blurred vision, dry mouth, and tachycardia:
Contraindicated in angina, untreated closed-angle glaucoma, prostatic hypertrophy, myasthenia gravis, paralytic ileus, and pyloric stenosis
• Glucagon is given if buscopan cannot. Risk of hypersensitivity and is contraindicated in phaeochromocytoma, insulinoma, and glucagonoma
• After the procedure, the patient may eat and drink as usual but is advised to keep their bowel moving to avoid barium impaction
• A barium study will prevent a CT examination of the same area for a period of time as intestinal barium creates dense streak artefact.
Water-Soluble Contrast Examinations
• In the case of recent surgery, suspected perforation, or investigation of a leak, water-based iodinated contrast is used instead of barium.
Examples include Gastrografin®, Urografin®, Niopam®, Omnipaque®
• A single-contrast examination is performed (i.e. the colon is not inflated with air) and many of the standard' views are not included
• No bowel preparation or fasting is needed.
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Pathology - Myocardial infarction with ST segment elevation (STEMI)
Pathophysiology
This is an instance of ST elevation myocardial infarction, or acute coronary syndrome (ACS). Stable angina and ST and non-ST segment elevation myocardial infarctions (STEMI and NSTEMI, respectively) are included in this category of illnesses. A classic presentation is pain, heaviness, or pressure in the substernal chest that may radiate to the patient's left arm or left jaw. Although the illness usually progresses over time and may eventually lead to symptoms at rest, the discomfort is most frequently triggered by effort and eased by rest. Both pain and sympathetic nervous system (SNS) activation have raised this patient's blood pressure and pulse. Relatively low blood pressure in this context would be concerning as it would probably imply substantial ischemic left ventricular (LV) damage. Another sign of the SNS's reaction to pain and injury is diaphoresis.
The S3 sound is a sign of decreased ventricular compliance, most likely as a result of myocardial ischemia-induced transient alterations. This patient has a clean lung field, a normal JVP, and no signs of heart failure because the event is acute and not yet decompensating. Normal perfusion in the extremities suggests sufficient ventricular function, but the anteroseptal distribution of the ECG (V1–V4) is crucial for myocardial damage. To restore heart circulation as soon as possible, this patient requires intravascular stent implantation or fibrinolysis in addition to oxygen, nitrate, aspirin, and morphine therapy.
Pathophysiology
This is an instance of ST elevation myocardial infarction, or acute coronary syndrome (ACS). Stable angina and ST and non-ST segment elevation myocardial infarctions (STEMI and NSTEMI, respectively) are included in this category of illnesses. A classic presentation is pain, heaviness, or pressure in the substernal chest that may radiate to the patient's left arm or left jaw. Although the illness usually progresses over time and may eventually lead to symptoms at rest, the discomfort is most frequently triggered by effort and eased by rest. Both pain and sympathetic nervous system (SNS) activation have raised this patient's blood pressure and pulse. Relatively low blood pressure in this context would be concerning as it would probably imply substantial ischemic left ventricular (LV) damage. Another sign of the SNS's reaction to pain and injury is diaphoresis.
The S3 sound is a sign of decreased ventricular compliance, most likely as a result of myocardial ischemia-induced transient alterations. This patient has a clean lung field, a normal JVP, and no signs of heart failure because the event is acute and not yet decompensating. Normal perfusion in the extremities suggests sufficient ventricular function, but the anteroseptal distribution of the ECG (V1–V4) is crucial for myocardial damage. To restore heart circulation as soon as possible, this patient requires intravascular stent implantation or fibrinolysis in addition to oxygen, nitrate, aspirin, and morphine therapy.
