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

Health Concepts

The concept of health, according to the WHO, is a state of complete physical, mental, and social well-being, and not merely the absence of disease or infirmity.

To measure health, a key parameter is life expectancy, i.e., the average life expectancy of a person.

Factors affecting a person's health may be biological, environmental, related to access to health services, or lifestyle-related. Lifestyle choices depend on personal or cultural factors. Leading a healthy life involves taking care of diet, engaging in physical exercise, and avoiding addictive substances.

Carbohydrates (60% Daily Intake)

Carbohydrates are an important source of energy for our body. They are stored mainly in muscle and liver cells.

Glucose is essential for...

Antibiotic Discovery

Fleming observed that a bacterial culture he had abandoned had deteriorated because a colony of fungi had grown in the culture. The fungus produced the death of the bacteria it came into contact with. Work continued until Fleming identified and extracted the substance from the fungus that was lethal to bacteria: penicillin.

Tumors

Normal tissue cells divide to produce other cells to replace old and damaged ones. These cells must die to make room for new ones. Sometimes, they produce more cells than necessary, or old cells do not die when they should. In such cases, a tumor forms, which is defined as a disorganized mass of tissue.

• Benign tumors remain in the place where they have been formed because their cells do not move.
• Malignant

Hazard Identification and First Aid

Clearly and briefly describe the main dangers, especially key risks to humans or the environment. Detail dangerous health effects, including symptoms related to foreseeable misuse.

First Aid Procedures

Describe first aid measures, clarifying if immediate medical attention is needed. Information should be brief and easy to understand, focusing on symptoms and effects. Include sections based on routes of exposure:

• Inhalation: Indicate if medical attention is required.
• Skin Contact: Indicate if medical attention is required.
• Eye Contact: Indicate if medical attention is required.
• Ingestion: Indicate if medical attention is required.

For some substances or preparations, emphasize the need for special means to provide...

Inpatient Detoxification Units

Description

The Commissioner for Drugs and Health Services offers the ability to perform detoxification in hospitals, so-called inpatient detoxification units. The UDH is the third level of devices, complementing the set of specialized outpatient and residential care devices. Patients are derived here when their personal situation makes outpatient detoxification risky.

Criteria

• Not meeting the criteria for outpatient detoxification.
• Therapeutic process aimed at abstinence.
• Admission is by way of urgency.
• Initial assessment at an outpatient facility.

Referral of Patients to Therapeutic Communities

Objective

To identify, motivate, and refer patients who have a psychosocial profile and a certain background, requiring a specific...

Breathing Exercises for Subconscious Regulation

During the realization of subconscious regulation, perform a standard respiration accompanied by some hyperventilation. This process renovates the air in your lungs to maximize capacity, provided the exercise is aerobic. The correct form of breathing is to inhale through your nose and exhale through your mouth. This method is superior because it prevents cold air from penetrating the throat, avoiding potential irritation.

Understanding Relaxation

Relaxation refers to a pleasant physical and psychic state where activities become gratifying and within the norm of physical stability.

Key Benefits of Relaxation

• Increased Concentration: Stress reduces physical and intellectual performance, making tasks

Personal Habits and Their Impact on Health

Personal attitudes significantly affect health. Negative behaviors include smoking tobacco, alcohol consumption, drug addiction, maintaining a poor diet, lack of physical activity, and failing to practice safe sex.

The Dangers of Tobacco Consumption

Tobacco causes both physical and psychological dependence due to the need to consume nicotine. It leads to chronic respiratory diseases such as asthma and chronic obstructive pulmonary disease (COPD), as well as heart disease, cancer, and strokes (brain attacks).

Healthy and Balanced Diets

A healthy diet aligns with the food pyramid, where food is distributed into different groups. A balanced diet must provide adequate amounts of the three types of macronutrients...

Lung Cancer Classification and Characteristics

Small Cell Lung Cancer (SCLC)

• Usually originates in a central location.
• High risk of lymph node metastases.
• Most patients present with metastases at diagnosis.

Non-Small Cell Lung Carcinoma (NSCLC)

• Adenocarcinoma

  • Usually peripheral.
  • More frequent in nonsmokers and women.
  • High risk of lymph node invasion and distant metastases.

• Squamous Cell Carcinoma

  • The most common of all lung cancers.
  • Normally affects the bronchi.
  • High risk of nodal involvement.

• Large Cell Carcinoma

Other Lung Tumors

• Carcinoid Tumors

Oncological Treatment for Lung Cancer

Treatment for Stages I and II Lung Cancer

Surgical Treatment (Surgery)

• Lobectomy: Excision of the lobe containing the tumor.
• Pneumonectomy: Full excision of the lung. Performed if

Malaria

Malaria: Transmitted by Anopheles mosquitoes. It is caused by a protozoan parasite of the genus Plasmodium. This parasite affects the liver cells and red blood cells (erythrocytes), where it reproduces. The rupture of the erythrocytes causes severe fever, chills, and anemia.

Treatment and Prevention

Treatment: Antimalarial drugs. Prevention is the best method to avoid malaria. Mosquito control using insecticides is crucial.

Other Vector-Borne Illnesses

Other diseases transmitted by vectors include Yellow Fever (transmitted by Aedes aegypti), Dengue, West Nile Fever, and Lyme disease (transmitted by ticks).

Diarrheal Diseases

These are health problems caused by intestinal microorganisms that infect people, often spreading through contaminated...

Control of Urea Biosynthesis

Reaction: CO₂ + NH₄⁺ + 4ATP + Asp → urea + fumarate + 4ADP + 2Pi + PPi

• Long-term regulation: Diet rich in protein or starvation upregulates urea cycle enzymes.
• Short-term regulation: N-acetylglutamate activates arginine synthetase, stimulating urea production.

Amino Acid Catabolism Pathways

• Gluconeogenic (Pyruvate): [Ala, Ser, Gly, Cys, Thr, Trp] → Pyruvate
• Gluconeogenic (Oxaloacetate): [Asp, Asn] → Oxaloacetate
• Gluconeogenic (α-Ketoglutarate): [Glu, Gln, Pro, Arg, His] → α-Ketoglutarate
• Gluconeogenic (Succinyl-CoA): [Val, Met, Ile, Thr] → Succinyl-CoA
• Gluconeogenic (Fumarate): [Phe, Tyr] → Fumarate
• Ketogenic (Acetyl-CoA): [Leu, Lys] → Acetyl-CoA
• Glucoketogenic: [Trp, Ile, Thr, Tyr, Phe]

Biogenic Amines by Decarboxylation

Immune Responses and Global Pandemics

One person or one pet that has reacted against an infection or a subtoxic dose develops antibodies against it. If these are injected into another person, they do not necessarily protect the vaccinated individual against a certain microorganism. Interferon makes the entry of the virus into other cells difficult. Pandemics are diseases that affect a very large territory, such as pneumonia and avian flu.

Understanding Non-Infectious Diseases

Cancer: Causes, Types, and Prevention

Cancer is a disease where a transformation occurs in a body tissue cell, causing them to reproduce in an uncontrolled and abnormal way. It is the second leading cause of death after cardiovascular diseases. Major types include lung, colon,...