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Hypertension

Definition
Hypertension, also known as high blood pressure, is a chronic medical condition characterized by persistently elevated pressure in the arteries. It is a significant risk factor for severe health issues, including cardiovascular disease, stroke, and kidney failure. Clinically, hypertension is diagnosed when systolic blood pressure is 140 mmHg or higher and/or diastolic blood pressure is 90 mmHg or higher, confirmed by multiple readings over time.

Medical Management
The cornerstone of hypertension treatment involves medical management, which combines lifestyle modifications and medications to lower blood pressure and reduce associated risks.

- Lifestyle Modifications: These are typically the first steps in managing hypertension and can have a significant impact:
- Diet: Following a heart-healthy diet, such as the DASH (Dietary Approaches to Stop Hypertension) diet, which emphasizes fruits, vegetables, whole grains, and low-fat dairy while limiting sodium intake to under 2,300 mg daily (ideally 1,500 mg for hypertensives).
- Exercise: Engaging in at least 150 minutes of moderate aerobic activity, like brisk walking, per week.
- Weight Control: Losing even a small amount of weight if overweight can help lower blood pressure.
- Other Habits: Reducing alcohol intake and quitting smoking, both of which can exacerbate hypertension.

- Medications: When lifestyle changes alone aren’t enough, or for more severe cases, doctors prescribe antihypertensive drugs. Common classes include:
- Diuretics: Remove excess sodium and water from the body, decreasing blood volume.
- Beta-Blockers: Reduce heart rate and the force of heart contractions.
- ACE Inhibitors and ARBs: Relax blood vessels by interfering with the hormone angiotensin II.
- Calcium Channel Blockers: Prevent calcium from tightening blood vessels, promoting relaxation.
- Additional options like alpha-blockers or vasodilators may be used depending on the patient’s needs.

Surgical Management
Surgery is rarely the primary treatment for hypertension but may be considered when high blood pressure stems from a specific, correctable cause. Examples include:

- Adrenal Tumors: Conditions such as pheochromocytoma or aldosterone-producing adenomas can drive secondary hypertension. Removing the tumor surgically often resolves the issue.
- Renal Artery Stenosis: Narrowed kidney arteries can elevate blood pressure. Procedures like angioplasty (using a balloon to widen the artery) or bypass surgery can restore normal flow.
- Coarctation of the Aorta: This congenital narrowing of the aorta can cause upper-body hypertension. Surgical repair or stenting can correct it.

Monitoring and Follow-Up
As a lifelong condition, hypertension demands consistent oversight. Regular blood pressure checks, adherence to prescribed treatments, and routine doctor visits are critical to adjust therapies, manage side effects, and maintain control over the condition.

Conclusion
Hypertension is predominantly managed through medical means—lifestyle adjustments and medications—aimed at controlling blood pressure and preventing complications. Surgery plays a limited but important role, reserved for cases where an underlying, fixable condition is the root cause. A tailored, ongoing approach is key to effectively managing this widespread health challenge.

Diabetes mellitus is a syndrome with disordered metabolism and inappropriate hyperglycemia due to either a deficiency of insulin secretion or to a combination of insulin resistance and inadequate insulin secretion to compensate. Type 1 diabetes is due to pancreatic islet B cell destruction predominantly by an autoimmune process, and these persons are prone to ketoacidosis. While type 2 diabetes is the more prevalent form and results from insulin resistance with a defect in compensatory insulin secretion. Diabetes can lead to serious complications, resulting in multiple diseases or disorders that affect multiple systems that may result in premature death.

Normal Pathology of the Human Body

In people that are healthy, the pancreas, an organ located behind the liver and stomach, secretes digestive enzymes and the hormones insulin and glucagon into the bloodstream to control the amount of glucose in the body. The release of insulin into the blood lowers the level of blood glucose (simple sugars from food) by allowing glucose to enter the body cells, where it is metabolized. If blood glucose levels get too low, the pancreas secretes glucagon to stimulate the release of glucose from the liver. Right after a meal, glucose and amino acids are absorbed directly into the bloodstream, and blood glucose levels rise sharply. The rise in blood glucose levels signals important cells in the pancreas, called beta cells, to secrete insulin, which pours into the bloodstream. Within 20 minutes after a meal insulin rises to its peak level.

Insulin enables glucose to enter cells in the body, particularly muscle and liver cells. Here, insulin and other hormones direct whether glucose will be burned for energy or stored for future use. When insulin levels are high, the liver stops producing glucose and stores it in other forms until the body needs it again. As blood glucose levels reach their peak, the pancreas reduces the production of insulin (about 2 - 4 hours after a meal both blood glucose and insulin are at low levels).

Type 1 Diabetes

Type 1 diabetes is usually diagnosed in children and young adults. It develops when the body’s immune system destroys pancreatic beta cells, the only cells in the body that make the hormone insulin, which regulates blood glucose.

Only 5% of people with diabetes have this form of the disease. To survive, people with type 1 diabetes must have insulin delivered by injection or a pump.

Type 2 Diabetes

Type 2 diabetes is the most common form of diabetes. The causes of type 2 diabetes are multi-factorial and include both genetic and environmental elements that affect beta-cell function and tissue (muscle, liver, adipose tissue, and pancreas) insulin sensitivity. In type 2 diabetes, either the body does not produce enough insulin or the cells ignore the insulin. It usually begins as insulin resistance, a disorder in which the cells do not use insulin properly. As the need for insulin rises, the pancreas gradually loses its ability to produce it.

When glucose builds up in the blood instead of going into cells, it can cause far-reaching health implications like heart disease, nerve damage and kidney damage. Diabetes is the leading cause of kidney failure, non-traumatic lower-limb amputations, and new cases of blindness among adults in the United State.

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🩸 Today, 14 November, is World Diabetes Day.

Diabetes is a chronic disease that affects 1 in 10 adults worldwide. It causes a person’s blood sugar level to become too high, because the body doesn’t make enough insulin or can’t use it as well as it should.

Symptoms of diabetes include:

🚰 Feeling very thirsty
🚽 Needing to urinate more often than usual
👁️ Blurred vision
😴 Feeling tired
📉 Losing weight unintentionally

Type 1 diabetes is not preventable. It is an autoimmune condition where the body’s immune system attacks itself and stops the body from making insulin.

Type 2 diabetes can often be prevented with healthy lifestyle, such as:

✅ Keeping a healthy body weight
✅ Staying physically active
✅ Eating a healthy diet
✅ Quitting to***co

🤰 Gestational diabetes can develop during pregnancy and happens when the body can’t make enough insulin, causing high blood sugar. Gestational diabetes usually goes away after giving birth.

The best way to detect diabetes early is to get regular check-ups and blood tests with a healthcare provider. Early diagnosis and treatment is key to preventing diabetes complications.

Learn more about diabetes here ➡️

Diabetes Diabetes is a chronic disease that occurs either when the pancreas does not produce enough insulin or when the body cannot effectively use the insulin it produces.

Poliomyelitis

Introduction

Poliomyelitis, commonly known as polio, is an infectious disease caused by the poliovirus. It primarily affects children under the age of 5 but can impact individuals of any age. Polio can lead to permanent paralysis and even death. Thanks to global vaccination efforts, polio has been eradicated in most parts of the world, but it remains a concern in some regions

Etiology and Transmission

The poliovirus is a highly contagious virus that spreads through person-to-person contact. It is transmitted via the fecal-oral route, typically through contaminated water or food. The virus can also spread through oral-oral transmission. After entering the body, the virus multiplies in the intestine and can invade the nervous system.

Pathophysiology

Once the virus enters the body, it multiplies in the oropharyngeal and intestinal mucosa. It then spreads to regional lymph nodes and, through the bloodstream, can reach the central nervous system. In the CNS, the poliovirus primarily targets motor neurons in the anterior horn of the spinal cord and brainstem. The destruction of these neurons results in muscle weakness and acute flaccid paralysis.

The incubation period ranges from 7 to 14 days, but it can be as long as 35 days. The severity of polio can vary from asymptomatic to severe paralytic disease. Asymptomatic cases do not exhibit symptoms, but the virus can still be spread.

Clinical Manifestations

Polio has different clinical forms:

1. Inapparent Infection
Most infections (around 90-95%) are asymptomatic.
2. Minor Illness: Also known as abortive poliomyelitis, this form presents with mild, flu-like symptoms such as fever, fatigue, headache, sore throat, and nausea.
3. Non-Paralytic Polio: This form includes symptoms of minor illness along with stiffness in the neck, back, and legs. It can last for 1 to 2 weeks.
4. Paralytic Polio: This severe form occurs in less than 1% of infections. Symptoms include sudden onset of asymmetric flaccid paralysis, usually affecting the legs more than the arms. Bulbar polio affects cranial nerves, leading to respiratory and swallowing difficulties.

Diagnosis
Diagnosing poliomyelitis involves a combination of clinical assessment and laboratory tests. Health professionals look for signs and symptoms consistent with polio and may perform tests such as:
- Virus Isolation: From stool or throat swabs.
- Serological Testing: To detect antibodies against poliovirus.
- PCR (Polymerase Chain Reaction): To detect viral RNA in clinical samples.

Treatment
There is no cure for poliomyelitis. Treatment focuses on relieving symptoms, preventing complications, and aiding recovery. Key aspects of treatment include:
- Supportive Care: Pain management, bed rest, and hydration.
-Physical Therapy: To maintain muscle function and prevent deformities.
- Mechanical Ventilation: For patients with respiratory paralysis.

Prevention
Prevention is the most effective way to combat poliomyelitis. The primary methods include:
- Vaccination: The Inactivated Poliovirus Vaccine (IPV) and Oral Poliovirus Vaccine (OPV) are highly effective in preventing polio.
- Good Hygiene Practices: Including handwashing and proper sanitation to prevent fecal-oral transmission.

Vaccination
-IPV (Inactivated Poliovirus Vaccine): Administered via injection, IPV is safe and provides excellent immunity. It induces a strong immune response but does not stop the virus from spreading.
- OPV (Oral Poliovirus Vaccine): Administered orally, OPV is easy to give and provides community immunity by spreading the weakened virus. However, in rare cases, it can cause vaccine-derived poliovirus.

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