Notes, summaries, assignments, exams, and problems for Medicine & Health

Defining the Normal Newborn

A normal newborn is a child born of healthy parents after a pregnancy without complications, lasting between 37 and 42 weeks, with weight and size appropriate for their gestational age.

Classification by Gestational Age

• Term: Born between 37 and 42 weeks.
• Preterm: Born before 37 weeks.
• Post-term: Born after 42 weeks.

Anatomical Characteristics and Measurements

Body Measurements

• Weight: Typically 2,700–3,800 kg. The newborn experiences physiological weight loss during the first 5 days, recovering the lost weight around the 10th day.
• Size (Length): Approximately 49–54 cm.
• Cranial Perimeter (Head Circumference): 35–36 cm. This measurement provides important information regarding brain development and possible morphological

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... Continue reading "Renal Lithiasis: Symptoms, Diagnosis, and Treatment" »

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... Continue reading "Infectious Disease Pathogens and Prevention Strategies" »

Esophagus: Symptoms and Conditions

The following symptoms are commonly associated with esophageal disorders:

• Dysphagia: Difficulty swallowing, often described as a retrosternal sensation of bolus detention.
• Odynophagia: Painful swallowing.
• Regurgitation: The return-to-mouth of food originating from the esophagus.
• Sialorrhea: Excessive production and flow of saliva.
• Heartburn (Pyrosis): A burning sensation caused by the reflux of gastric contents.
• Aerophagia: The sudden evacuation of swallowed air.
• Esophagorrhagia: Expulsion of blood via vomiting (hematemesis).

Major Esophageal Conditions

Megaesophagus or Achalasia

Diffuse dilation of the esophageal wall, characterized by internal dysphagia. It presents as permanent retrosternal or interscapular odynophagia,... Continue reading "Gastrointestinal Pathology: Symptoms and Conditions of the Esophagus, Stomach, and Intestine" »

Antihistamine Side Effects and Pharmacokinetics

Adverse Effects

• Gastrointestinal: Nausea, vomiting, diarrhea, constipation, epigastric pain (in some cases), increased appetite. Examples: Astemizole and Azelastine.
• Central Nervous System (CNS): Sedation. Examples: Azelastine, Cetirizine, and...
• Cardiovascular: QT prolongation by blocking K+ channels. (Observed with) Terfenadine and Astemizole.
• Other Reactions: Headache, rash, hypersensitivity, and anaphylaxis.

Pharmacokinetics (Half-Lives - VM)

Astemizole

VM: 20–24 hours

Cetirizine

VM: 7–10 hours

Elastin

VM: 10–16 hours

Loratadine

VM: 12–15 hours

Mizolastine

VM: 8–13 hours

Etc.

Other antihistamines vary.

Muscle Relaxants (Miorelajantes)

Long-Term Benzodiazepines (Half-Lives)

Diazepam

VM: 20–80 hours

Clonazepam

VM:

Nutritional Management for Diabetes

Goals of the Diabetic Diet

• Achieve good nutritional status.
• Ensure optimal control of blood glucose levels.
• Maintain normal weight (or slightly below normal, if necessary).
• Avoid long-term complications.

Dietary Characteristics

1. Meal Frequency and Regularity

   Consume three main meals and two snacks/supplements. Timing regularity is crucial.

2. Energy Intake

   • Provide adequate caloric intake.
   • Adjust intake based on individual needs and physical activity.
   • Energy intake should not be less than 1000 kcal.
   • Aim for a weight slightly below the normal range.

3. Carbohydrates (50–55% of total energy)

   • Intake should be slightly less than normal, contributing not less than 40% of individual energy.
   • Ensure balanced distribution across various

Preoperative Care and Patient Preparation

Preoperative care starts when the decision to operate is made. It involves planning specific care and observing the patient for signs that may require delaying surgery.

Signs to Observe Before Surgery

• Cold or cough
• Respiratory difficulties
• Fever
• Menstruation (the rule)
• Chest pain
• Signs of skin eruptions
• Auditory or visual problems
• Intense anxiety

Preparation Days Prior to Intervention

During the days leading up to the surgery, the following steps are essential:

• Compilation of all necessary medical tests.
• Collaborating with and helping the patient with their personal hygiene.
• Performing shaving or enemas if indicated.
• Applying cleansing agents to the area before operating.
• Assessing hydration and nutritional status.
• Listening

Understanding the Basics

When converting direct speech to indirect speech (also known as reported speech), several changes typically occur in verb tenses, pronouns, and time expressions. The following tables provide a comprehensive look at these transformations.

Tense Changes

Pronoun and Adverb Changes

Beta-Lactam Antibiotics

Penicillins

Classification of Penicillins

• Narrow-Spectrum Penicillins
  • Natural Penicillins: Penicillin G Sodium, Penicillin G Procaine, Penicillin G Benzathine.
  • Acid-Resistant Penicillins: Penicillin V, Pheneticillin, Propicillin.
• Beta-Lactamase Resistant (Antistaphylococcal) Penicillins
  • Oxacillin, Cloxacillin, Methicillin, Nafcillin.
• Broad-Spectrum Penicillins
  • Antipseudomonal Penicillins:
    • Carboxypenicillins: Carbenicillin, Ticarcillin.
    • Ureidopenicillins: Azlocillin, Mezlocillin, Piperacillin.
  • Aminopenicillins (Beta-Lactamase Sensitive): Amoxicillin, Ampicillin.
• Gram-Negative Beta-Lactamase Resistant Penicillins
  • Temocillin.
• Beta-Lactamase Inhibitors
  • Clavulanic Acid, Sulbactam, Tazobactam.

Key Characteristics of Penicillins

• Structure: Composed

Sterilization Validation Process

The objective of the sterilization validation process is to ensure effective sterilization.

Physical Controls

These involve charting values such as pressure, temperature, time, and humidity.

Chemical Controls

These are chemical compounds that change color when they interact with the sterilizing agent:

• External: Indicates that the sterilizing agent reached the surface of the package.
• Internal: Placed into the package. These confirm if the sterilization conditions were appropriate inside the package.
• Operation: Used to verify that the steam in the autoclave reaches every corner of the apparatus. This is used daily at the beginning of the day to check the vacuum autoclave for proper working. The Bowie-Dick test is the