Dr.Najeeb notes & Medical notes

Because this channel is only meant for study, study, study

Does anyone have an idea how I can stop this nonsense?

Hello everyone! 👋 Just a reminder — this channel is only for study-related content 📚. Please avoid sharing casino games, ads, or unrelated material. Let's keep it focused and helpful for all. Thanks for understanding!

### 1. LSD (Lysergic acid diethylamide) - Perceptual distortion: Seeing or hearing things in a weird or exaggerated way (e.g., colors look brighter, shapes look like they’re moving). - Depersonalization: Feeling like you're outside your body, like you're watching yourself. - Anxiety: Feeling very nervous or scared. - Paranoia: Thinking people are watching you or trying to harm you without a real reason. - Psychosis: Losing touch with reality — believing or seeing things that aren’t real. - Flashbacks: Having the same hallucinations again later, even without taking the drug. - Mydriasis: Big (dilated) pupils. --- ### 2. Cannabis / Marijuana - Euphoria: Feeling really happy or “high.” - Anxiety: Feeling nervous or scared. - Paranoid delusions: Thinking strange things are happening (e.g., “they’re after me”), even if they're not. - Impaired judgment: Making poor decisions (e.g., driving while high). - Social withdrawal: Not wanting to talk to people. - ↑ Appetite: Feeling very hungry (a.k.a. "the munchies"). - Dry mouth: Mouth feels dry, like cotton. - Conjunctival injection: Red eyes. --- ### 3. MDMA (Ecstasy) - Euphoria: Feeling extremely happy and loving. - Hallucinations: Seeing or hearing things that aren’t there. - Disinhibition: Acting freely, no fear (e.g., hugging strangers). - Hyperactivity: Can’t sit still, too much energy. - ↑ Thirst: Very thirsty (can lead to drinking too much water). - Bruxism: Teeth grinding (common at parties with music). - Distorted perceptions: Things feel strange, like time moving slowly. - Mydriasis: Big pupils. - Hyperthermia: Very high body temperature. - Hyponatremia: Low sodium in blood, usually from drinking too much water. - Serotonin syndrome: Dangerous condition from too much serotonin — high fever, confusion, shaking. --- ### 4. PCP (Phencyclidine) - Violence: Very aggressive behavior. - Nystagmus: Eyes move quickly without control (especially vertical). - Impulsivity: Doing risky things without thinking. - Psychomotor agitation: Moving a lot, restless, can’t sit still. - Tachycardia: Fast heart rate. - Hypertension: High blood pressure. - Analgesia: No feeling of pain (dangerous because they can hurt themselves and not feel it). - Psychosis: Seeing or believing strange things. - Delirium: Confused and not thinking clearly. - Seizures: Sudden shaking or fits due to brain activity.

This topic — Demographic Transition Model — is VERY important for USMLE Step 1. When I gave Step 1, I saw a question directly from this topic. Even my friend got a similar one — and we had no clue back then! That’s why I made this fun, comic-style video to help you understand and remember it forever. Watch it now before your exam — 100% worth it!

An investigator is conducting a study of the efficacy of certain vitamins in helping to prevent heart disease in women. Eight thousand women, 45 years of age or older, are enrolled in the study. Two thousand women receive vitamin C only, 2000 receive vitamin E only, 2000 receive both vitamins C and E, and 2000 receive a placebo. The investigator finds that the vitamins are ineffective in helping to prevent heart disease. Which of the following best describes the study design used in this clinical trial? A) Crossover B) Cross-sectional C) Factorial D) Nested E) Simple

✔8. An investigator is conducting a study of the efficacy of certain vitamins in helping to prevent heart disease in women. Eight thousand women, 45 years of age or older, are enrolled in the study. Two thousand women receive vitamin C only, 2000 receive vitamin E only, 2000 receive both vitamins C and E, and 2000 receive a placebo. The investigator finds that the vitamins are ineffective in helping to prevent heart disease. Which of the following best describes the study design used in this clinical trial? A) Crossover B) Cross-sectional C) Factorial D) Nested E) Simple

A research laboratory develops a new serologic test for detecting prostate cancer. The new assay is compared to transrectal ultrasound- guided prostate biopsy to determine sensitivity and specificity parameters. It is found that the test result is negative in 95% of patients the disease. If the new assay is used on 9 blood samples taken from patients without prostain cancer, what is the who do not have the probability of all 9 test results coming back negative? A. 0.05 * 9 B. 0.95 * 9 C. 0.05 D. 0.95 0.95 0.95 0.95 0.95 0.95 0.95 0.95 0.95 E. (0.1 - 0.05*9) F. (0.1 - 0.95*9)

A research laboratory develops a new serologic test for detecting prostate cancer. The new assay is compared to transrectal ultrasound- guided prostate biopsy to determine sensitivity and specificity parameters. It is found that the test result is negative in 95% of patients the disease. If the new assay is used on 9 blood samples taken from patients without prostain cancer, what is the who do not have the probability of all 9 test results coming back negative? A. 0.05 * 9 B. 0.95 * 9 C. 0.05 D. 0.95 0.95 0.95 0.95 0.95 0.95 0.95 0.95 0.95 E. (0.1 - 0.05a) F. (0.1 - 0.95s)

A 25 year-old woman who is seropositive for HIV is taking two different reverse transcriptase inhibitors and a protease inhibitor. Which of the following best explains the beneficial action of the protease inhibitor in this combination? A) Antagonizing the stimulation of DNA replication by the reverse transcriptase inhibitors B) Blocking the cleavage step in active virion production C) Disrupting the catalytic site on reverse transcriptase synthetase D) Inhibiting the protein that permits DNA chain elongation E) Preventing the proteolytic cleavage of reverse transcriptase

A multicenter study was performed with 5000 women over 45 years of age to evaluate a new mammography technique for the diagnosis of breast cancer. A core-needle biopsy of the breast was obtained in all recruited women with abnormal mamography findings. Of the 29 women who underwent biopsy, 26 were found to have breast cancer, the remaining women were found to have benign breast changes. Which of the following is required to calculate the specificity of this new mammography technique? A)Probability that a woman with abnormal mammography findings has breast cancer B) Incidence of breast cancer in the general population C) Number of women with normal mammography who do not have breast cancer D) Prevalence of breast cancer in the general population E) Number of women with benign breast changes and normal mammography findings

An investigator studying the effects of dietary salt restriction on atrial fibrillation compares two published studies, A and B. In study A, nursing home patients without atrial fibrillation were randomly assigned to a treatment group receiving a low-salt diet or a control group without dietary salt restriction. When study B began, dietary sodium intake was estimated among elderly outpatients without atrial fibrillation using 24-hour dietary recall. In both studies, patients were reevaluated at the end of one year for atrial fibrillation. Which of the following statements about the two studies is true? A Study B allows for better control over selection bias B Study B is better at inferring causality C Study A allows for better control of confounding variables D Study B results can be analyzed using a chi-square test E Study A results can be analyzed using a t-test

I am thrilled to share with all of you that I have passed the FMGE in India on my first attempt! This success wouldn’t have been possible without consistent hard work, determination, and the right guidance. Through this journey, I realized how important it is to have access to quality resources, and that’s exactly why I created this Telegram channel, ‘Dr. Najeeb Notes.’ I hope the content I share here continues to help and inspire all of you in your own medical journey. Let’s achieve our dreams together!"

How to use Najeeb lectures: First, watch the video, then make your own notes. This is especially helpful when you're short on time during your first two years of medical school.