Notes, summaries, assignments, exams, and problems for Medicine and health sciences

Pancreatitis: Inflammation, Causes, and Care

Acute Pancreatitis

Acute pancreatitis is a sudden inflammation of the pancreas that can range from mild to life-threatening, though it usually subsides. Gallstones and alcohol abuse are responsible for approximately 80% of cases. It is more frequently caused by gallstones or obstruction of the pancreatic duct by a gallstone lodged in the sphincter of Oddi, interrupting the flow of pancreatic juice. However, if the obstruction persists, activated enzymes accumulate in the pancreas and begin to digest its cells, causing severe inflammation.

Symptoms of Acute Pancreatitis

• A belt-like, intense abdominal pain in the upper abdomen, typically below the sternum. When pancreatitis is caused by gallstones, the

Renal Lithiasis: Definition and Causes

Renal lithiasis occurs as a process due to the substantial precipitation that contains urine. It can occur in the kidney and bladder.

Clinical Presentation and Diagnosis

If the stones do not block the excretory tract, symptoms do not appear. However, they can move and cause obstruction of the way, so they will produce hydronephrosis and corresponding renal fossa pain. The characteristic pain radiates to the genitals; this happens when making a radiograph of the abdomen, where one can see the route of the excretory tract. The diagnosis of kidney stones is done by clinical evaluation and a simple x-ray of the abdomen. Additionally, ultrasound is used to observe what degree of impact the calculus has on the...

Metal Fumes and Vapors

Molten metal, due to its higher vapor pressure at the surface (proportional to temperature), releases fumes into the atmosphere. Oxidized metal fumes typically react with oxygen in the air and condense into solid particles smaller than one micron (µm), which remain airborne. These are termed metal fumes.

Smoke and metal fumes, along with inorganic metal powders such as lead and mercury, can cause toxic effects, irritation, or lead to pneumoconiosis. They are absorbed through inhalation or ingestion. Industrial hygiene experience indicates that poisoning via inhalation is more likely than ingestion.

Toxic smoke reaching the lungs can pass directly into the bloodstream, reaching various organs and tissues quickly. In contrast,...

Head: Coloration and Cyanosis

Coloration: Cyanosis

Is cyanosis present? Cyanosis is not always blue! There is one exception: Pink Cherry coloration taken for carbon monoxide poisoning (CO).

Cyanosis may be central (fingertips hot) or peripheral (distal extremities cold). The distinction between central and peripheral cyanosis sets the type of respiratory illness.

Central cyanosis is also indicated when pressing the earlobe does not restore color, remaining pale blue.

Eyes

Note coloring, especially in joggers. Look for bulging eyes.

Lips

Observe "pursed-lip breathing". This breathing pattern is often acquired in respiratory illness. The patient produces whistling sounds and it is designed to extend the expiration time, optimizing breathing.

Nose

Check...

Fetal Development: The Journey to Birth

First Trimester Milestones (Weeks 8–11)

By 8 weeks, the embryo transitions into a fetus.

Week 9: Nervous System and Movement

• The nervous system generates neurons.
• The fetus begins to tremble, strengthening muscles through involuntary spasms.
• The brain does not yet control the heartbeat.

Week 11: Reflexes and Growth Spurt

• The kicking reflex begins (the fetus starts experimenting with its feet).
• The period from Week 6 to 11 shows the most notable growth.

Second Trimester Development (Up to Week 18)

The fetus develops strong muscles and bones, connecting all organs of the nervous system. It gains total control of the brain and becomes sensitive to touch. The fetus is aware of its space and performs countless movements....

The Miracle of Fetal Development

The journey from conception to birth is an extraordinary process of growth and transformation. The developing fetus recognizes various actions and sensations, including dreaming.

Conception and Early Stages

• Fertilization: Sperm possess a unique 'smell' that guides them to the egg. The fusion of the sperm and egg nuclei marks fertilization.
• Implantation: The fertilized egg then travels to the mother's uterus and implants in the placenta.
• Trimesters: Pregnancy is typically divided into three trimesters, each marking significant developmental phases.

First Trimester: Foundations of Life

Week 2-3: Initial Transformations

• 15 Days Post-Implantation: Around 15 days after implantation, the embryo undergoes a significant transformation,

Food Contamination Risks

A food item is potentially at risk of contamination from the time of harvest until it is consumed. The risks related to food safety can be classified into:

• Microbiological contamination: Bacteria, fungi, viruses, or parasites. Often causes severe symptoms.
• Chemical contaminants: Natural substances, residues of veterinary drugs, heavy metals, etc., unintentionally introduced into the food supply during cultivation, breeding, processing, transportation, or packaging.

Common Food Contaminants

• Heavy metals
• Shellfish toxins
• Mycotoxins
• Pesticide Residues
• Environmental organic chemicals

Factors Influencing Contaminant Risk

The health risk posed by a contaminant depends on several factors:

• Absorption and toxicity of the substance
• Amount

Vitamins and Minerals

Soluble Vitamins

Vitamin C: Protects, regulates, and facilitates chemical processes of other enzymes. Its main function is the formation of collagen, facilitates the absorption of iron, protects vitamin A and E from oxidation, and regulates cholesterol metabolism. Sources: green vegetables, citrus fruits, tomatoes. Deficiency: scurvy, irritability, bone pain, easy bleeding, poor healing. Toxicity: gastric irritation, kidney stones, false positive tests for fecal occult blood or glucosuria.

Vitamin B1 (Thiamine): Important coenzyme in the metabolism of carbohydrates. Sources: meat, grains, legumes. Deficiency causes: alcoholism, dialysis, diet high in carbohydrates. Beriberi, Wernicke's encephalopathy.

Vitamin B2 (Riboflavin)

Part 1: General Pharmacology

1. Pharmacology

Definition: Pharmacology is the study of drugs, their sources, properties, actions, uses, and effects on living organisms.

Main Branches

• Pharmacodynamics: What the drug does to the body.
• Pharmacokinetics: What the body does to the drug.
• Clinical Pharmacology: The study of drugs in humans.
• Pharmacotherapeutics: The use of drugs in treatment.
• Toxicology: The study of the harmful effects of drugs and poisons.

2. Pharmacokinetics ⭐⭐⭐⭐⭐

Definition: Pharmacokinetics is the study of what the body does to a drug.

ADME

• A — Absorption: Movement of a drug from the site of administration into the blood.
• D — Distribution: Movement of a drug from the blood to the tissues.
• M — Metabolism: Chemical alteration

-Techniques of putting very cold -water on your face

“Tek-niks of pu-ting veri kold wo-ter on yor feis”

-If these techniques do not work, -you may need:

“If diz tek-niks do not werk, yu may nid:”

-an injection of medicine into a vein -to reset your heart rhythm

“an in-yek-shon of med-i-sin in-to a vein to ri-set yor jart ri-zum”

-a procedure that uses electricity -to reset your heart rhythm 

-(electrical cardioversion)

“a pro-si-jer dat yu-zes e-lek-tri-si-ti to ri-set yor jart ri-zum (e-lek-tri-cal car-dio-ver-shon)”

⸻

-Treatment to prevent symptoms

“Trit-ment to pri-vent simp-toms”

-If you keep getting symptoms or if -you’re at risk of having a very fast -heartbeat that becomes life

-threatening, you may be offered -treatment...