Serangan Jantung

Pagi ini saya masuk ke kelas 5A/B (waktu PJPK) mengganti Cik Elyani yang cuti sakit. Kebanyakan pelajar sedang membaca buku teks (berkaitan jantung). Saya minta satu kumpulan jelaskan tentang apakah punca serangan jantung. Oleh kerana jawapan mereka kurang memuaskan hati, saya pun cari maklumat berkenaan.

Apakah Serangan Jantung?
Serangan jantung berlaku apabila pengaliran darah beroksigen (melalui arteri arteri) ke sebahagian jantung terhalang. Jika pengaliran darah tidak dipulihkan, bahagian otot jantung yang berkenaan akan rosak akibat kekurangan oksigen dan mula mati.

Serangan jantung adalah pembunuh nombor satu di Malaysia. Hari ini terdapat rawatan yang boleh menyelamatkan nyawa dan mencegah ketidakupayaan akibat serangan jantung. Rawatan paling berkesan dalam tempoh 1 jam selepas simtom bermula. Jika anda fikir seseorang itu mengalamai serangan jantung, panggil 999 serta-merta.

Overview
Heart attacks occur most often as a result of a condition called coronary artery disease (CAD). In CAD, a fatty material called plaque (plak) builds up over many years on the inside walls of the coronary arteries (the arteries that supply blood and oxygen to your heart). Eventually, an area of plaque can rupture, causing a blood clot to form on the surface of the plaque. If the clot becomes large enough, it can mostly or completely block the flow of oxygen-rich blood to the part of the heart muscle fed by the artery.


During a heart attack, if the blockage in the coronary artery isn’t treated quickly, the heart muscle will begin to die and be replaced by scar tissue. This heart damage may not be obvious, or it may cause severe or long-lasting problems.Severel problems linked to heart attack can include heart failure and life-threatening arrhythmias (irregular heartbeats). Heart failure is a condition in which the heart can’t pump enough blood throughout the body. Ventricular fibrillation is a serious arrhythmia that can cause death if not treated quickly.

Get Help Quickly
Acting fast at the first sign of heart attack symptoms can save your life and limit damage to your heart. Treatment is most effective when started within 1 hour of the beginning of symptoms.

The most common heart attack signs and symptoms are:

• Chest discomfort or pain—uncomfortable pressure, squeezing, fullness, or pain in the center of the chest that can be mild or strong. This discomfort or pain lasts more than a few minutes or goes away and comes back.
• Upper body discomfort in one or both arms, the back, neck, jaw, or stomach.
• Shortness of breath may occur with or before chest discomfort.
• Other signs include nausea (feeling sick to your stomach), vomiting, lightheadedness or fainting, or breaking out in a cold sweat. If you think you or someone you know may be having a heart attack: Call 999 within a few minutes—5 at the most—of the start of symptoms.

If your symptoms stop completely in less than 5 minutes, still call your doctor. Only take an ambulance to the hospital. Going in a private car can delay treatment. Take a nitroglycerin pill if your doctor has prescribed this type of medicine.

Each year, millions of people have heart attacks, and almost half of them die. CAD, which often results in a heart attack, is the leading killer in Malaysia. Many more people could recover from heart attacks if they got help faster. Of the people who die from heart attacks, about half die within an hour of the first symptoms and before they reach the hospital

Reactivity Series

Hari ini saya masuk ke kelas 5A. Ramai pelajar sedang mengulangkaji tajuk "reactivity". Nampaknya ramai yang "confuse". Laman web ini mungkinboleh membantu.

In introductory chemistry, the reactivity series or activity series is an empirical series of metals, in order of "reactivity" from highest to lowest. It is used to summarize information about the reactions of metals with acids and water, single displacement reactions and the extraction of metals from their ores.
Going from bottom to top, the metals:

• increase in reactivity;
• lose electrons more readily to form positive ions;
• corrode or tarnish more readily;
• require more energy (and different methods) to be separated from their ores; become stronger reducing agents.

The gold mask of Tutankhamun was buried in his tomb for over 3,000 years and still looks as good as new.

Solat Berjemaah

Hari ini bilangan pelajar yang memakai pakaian unit beruniform masing-masing kelihatan semakin meningkat berbanding minggu lalu. Tahniah diucapkan kepada semua pelajar. Di harap juga pasukan kadet polis tidak mengulangi kesilapan sehingga didenda oleh Cikgu Din.

Minggu ini dah masuk minggu kedua kita semua solat zuhur berjemaah. Alhamdulillah sambutan pelajar dan guru sangat baik.

Mesyuarat JKD Sains

Terima kasih kepada PKG Buluh Kasap kerana memberi izin menggunakan bilik mesyuarat PKG utk mesyuarat JK Panitia Sains Daerah. Kerana memenuhi kehendak ahli, mesyuarat diadakan di sini kerana kononnya SMK Palong Timur terlalu jauh. Sebenarnya kalau diukur betul-betul SMK MAokil, SMK Bekok lebih jauh lagi. Mungkin kerana nama, mungkin kerana persekitaran, mungkin juga kerana laluan menyebabkan mereka beranggapan sekolah kita ni jauh sangat.
Mesyuarat kali ini tertumpu kepada keputusan peperiksaan setengah tahun yang keputusannya agak kurang memuaskan.

Merokok Merosakkan Otak

New research which suggests a direct link between smoking and brain damage will be published in the July issue of the Journal of Neurochemistry. Researchers, led by Debapriya Ghosh and Dr Anirban Basu from the Indian National Brain Research Center (NBRC), have found that a compound in tobacco provokes white blood cells in the central nervous system to attack healthy cells, leading to severe neurological damage.
The research centers on a compound known as NNK, which is common in tobacco. NNK is a procarinogen, a chemical substance which becomes carcinogenic when it is altered by the metabolic process of the body.

Sekolah Bersih

Semalam (23 Julai 2009) saya menghadiri taklimat Urusan Pemangkuan PPP Cemerlang di SJK(C) Pu Sze, Skudai, Johor Bahru. Kebetulan pula Guru Besar sekolah ini, En Tay Kim Leong adalah rakan setugas semasa saya di SMK AlRiShah I Pagoh, tahun 80'an dulu. Bilangan pelajar sekolah hampir mencecah 4000 orang (2 sesi). Walaupun bilangan pelajarnya ramai, sekolah ini tetap kelihatan bersih. Saya harap pelajar SMKPL juga sentiasa memastikan kebersihan persekitaran sentiasa dikekalkan pada setiap masa. Dewan di mana taklimat di adakan cukup besar dan selesa dan boleh mengatasi mana-mana dewan kuliah di sekolah-sekolah bantuan kerajaan. Memang menjadi kemestian di mana-mana SJKC, walau di mana lokasi sekolah, walau sebesar mana pun sekolah, dewan sekolah tetap ada. Walau bagaimana cara sekalipun mereka tetap berusaha untuk membina dewan sekolah sendiri. Mungkinkah ini ada kaitan dengan budaya mereka?

Aung San Suu Kyi

Untuk anak-anak Pra-U:

Aung San (13 February 1915 – 19 July 1947) was a Burmese revolutionary, nationalist, and founder of the modern Burmese army, the Tatmadaw.

He was instrumental in bringing about Burma's independence from British colonial rule, but was assassinated six months before its final achievement. He is recognized as the leading architect of independence, and the founder of the Union of Burma. Affectionately known as "Bogyoke" (General), Aung San is still widely admired by the Burmese people, and his name is still invoked in Burmese politics to this day.

Aung San was the father of Nobel Peace laureate and opposition leader Aung San Suu Kyi, who has been under house arrest for the past 19 years.

Aung San Suu Kyi born 19 June 1945 in Rangoon, is Prime Minister-elect, a pro-democracy activist and leader of the National League for Democracy in Burma, and a noted prisoner of conscience and advocate of nonviolent resistance.

Aung San Suu Kyi was the third child in her family. Her name is derived from three relatives; "Aung San" from her father, "Kyi" from her mother and "Suu" from her grandmother. Suu Kyi won the Rafto Prize and the Sakharov Prize for Freedom of Thought in 1990 and the Nobel Peace Prize in 1991. In 1992 she was awarded the Jawaharlal Nehru Award for International Understanding by the Government of India for her peaceful and non-violent struggle under a military dictatorship.

She is currently under detention, with the Burmese junta repeatedly extending her detention. According to the results of the 1990 general election, Suu Kyi earned the right to be Prime Minister, as leader of the winning National League for Democracy party, but her detention by the military junta prevented her from assuming that role.

She is frequently called Daw Aung San Suu Kyi; Daw is not part of her name, but an honorific similar to madam for older, revered women, literally meaning "aunt". Strictly speaking, her given name is equivalent to her full name, but it is acceptable to refer to her as "Ms. Suu Kyi" or Dr. Suu Kyi, since those syllables serve to distinguish her from her father, General Aung San, who is considered to be the father of modern-day Burma.

Solat Zuhur Berjemaah

Tahniah dan terima kasih kepada semua guru dan pelajar yang telah sama-sama menunaikan solat zohor berjemaah.