Essays on Occlusion

Where are the normal pacemaker and the backup pacemaker of the heart located?

Answer: The normal pacemaker of the heart is known as Sino- atrial (SA node) which is located in the right atrium of the heart, whereas, the backup pacemaker of the heart is known as Atrio- ventricular and it is situated in the centre of the heart along the right atrim (AV node) (Rhodes, 2008).

Why does this patient have a bradycardia?

Answer: The patient has bradycardia as a result of occlusion in the right coronary artery (Serrano Jr et al., 1999). Infarction in the right coronary artery is known to give rise to bradycardia.

What parts of the heart have the fastest and slowest conduction velocities?

Answer: The Purkinje fibres have the fastest conduction velocities whereas the AV ...

Introduction

Dental implants are increasingly becoming popular because a large section of clinicians believe that natural tooth restoration techniques are inferior to dental implants as implants have a longer life than natural tooth and are less susceptible to biological changes. There are various types of dental implants that support crown, bridges, and dentures, and act as orthodontic anchors and facial prosthesis. The basis of the modern dental implant is a biological process in which titanium forms a bond with bone. Dental fixture is first implanted and then a prosthetic is added. Over the years, various implant impression techniques, such as ...

The air near the surface will usually become warmer throughout the day. This is one of the main reasons why it is unstable. Then at night, the air that is close to the surface will begin to cool. This is going to form a temperature inversion or a stable atmosphere.2. Inversions aloft are sometimes called “capping inversions” or “lids”. Why?

This is because it is like putting a lid on the atmosphere.

3. You are flying at 4,000 feet AGL over a city during the day. There are no clouds present. As you descend to land at a nearby airport, you notice that, although visibility was very good at 4, ...

The importance of percutaneous coronary intervention (PCI) as an integrated intervention for persistent coronary occlusion after myocardial infarction seems to have little indication of any improvements or positive benefits in the long term. When integrated with optimal medical therapy and stent placement there is little indication that in deed PCI affords the patients a higher chance of regression of coronary atherosclerosis (Hochman et al., 2006). In this regard, optimal medical therapy alone indicated significant benefits with particular reference to significant regression of coronary atherosclerosis for any period past the three years upon initiation of PCI. This in some sense ...

Acute coronary syndrome is an umbrella term for a group of clinical symptoms indicative of acute myocardial ischemia. These conditions include non-ST-segment elevation myocardial ischemia (NSTEMI), unstable angina, and ST-segment elevation myocardial infarction (STEMI). These conditions are high-risk manifestations of atherosclerosis in the coronary artery and significant causes of utilization of emergency services and hospitalization (Kumar and Cannon, 2009). STEMI causes 30% of all acute coronary syndromes in Australia (Harper and Lefkovits, 2010). This paper will describe the expected presentation, pathophysiology, ECG findings, pre-hospital management, and initial 24-hour management of STEMI in hospitals settings. These aspects will be described ...

ICU Observation Evidence-based Practice

ICU Observation Evidence-based Practice

Introduction of the Patient

The patient goes by the name T.P. A 72-year-old male who’s a retired truck driver. He’s immediate family includes his wife, daughter, and grandson (10 years old who is autistic and has turrets syndrome). He is currently diagnosed with myocardial infarction and altered mental state. The past medical history of this patient shows that he has suffered a lot of diseases including hypertension, diabetes mellitus Type 2, congested heart failure, peripheral neuropathy, CKD-3, CAD, dementia, chronic kidney disease and GERD.

The primary medical diagnosis is myocardial infarction which refers to regional myocardial necrosis ...