Interruptio fluxus sanguinis: a weapon of mass tissue destruction
The abrupt obstruction of arterial blood supply to target organs leads to coagulative tissue necrosis – infarction. Venous obstruction or compression can have similar consequences. Either event constitutes an emergency, especially in tissues which depend for vitality on oxygenation like the brain, heart and kidneys. The time from onset of symptoms to relief of obstruction, is critical to minimize tissue death, morbidity and mortality. Within the window period of tissue viability, which varies with different organs, a host of medical, surgical and interventional options exist.
Insights and Impact
- Diseases and habituations that predispose to vascular (especially arterial) disease deserve special attention e.g. hypertension, diabetes, obesity, metabolic syndrome, alcoholism, cigarette smoking etc. to implement therapeutic and lifestyle choices that prevent or slow the evolution of vascular disease
- Exercise and dietary choices customized to individuals as a sustainable choice has significant impact not only for its benefits towards metabolic processes but in improving collateral circulation which supports target tissues in the event of block of a vessel.
- Training of non- health professionals in recognizing common symptoms that need CPR and availability of Emergency services that provide early resuscitation before arrival at a health facility play a significant role in limiting tissue death, complications and survival
- Diagnosis rests on corroborating classical and atypical clinical symptoms and signs with investigations appropriate to the suspected organ e.g. cardiac electrophysiological and imaging work-up supported by specific biochemical parameters (tissue-specific isoenzymes) – to localize the vascular block and estimate the extent of infarct
- Principles of medical management include symptomatic measures like pain relief, adequate oxygenation, maintenance of perfusion through medical thrombolysis or interventional methods, and treatment of complications, while managing co-morbidities
- Post-infarction recovery and rehabilitative measures are important to prevent recurrence. The catastrophic impact of a stroke because of cerebral infarction needs significant and specialized post-event physiotherapy.
Rhythm ’n rhyme
Lifeline to Vitality
Blood is the flowing fluid that nourishes tissues
Supplies oxygen and nutrients, vitality imbues;
Spasm, stenosis, occlusion: arterial flow compromise
Strangulation, torsion, thrombosis: venous circulation paralyze.
The end-result’s infarction as starved tissues gasp and die
Many factors determine the outcome: hearty laughter with recovery or a terminal cry;
Old age, anemia, hypotension, usually make things worse
Rapid, single arterial occlusion is certainly a curse.
Infarcts can be red or pale, wedge-shaped or irregular, arterial or venous
Usually necrosis is coagulative, but liquefactive if in the brain or with sepsis;
Precordial pain, referred to neck and arm, suggest the myocardium is in trouble
Corroborate with elevated isoenzymes, ECG changes, Imaging - admit and treat on the double.
Onset of hemiplegia, draws attention quicker than most
On CT scan the contralateral hemisphere, is likely a cerebral infarct to host;
Speed is of essence, friend or physician! when you make such an encounter
Within minutes, restore local or systemic circulation or the organ will play a bouncer!
Deep Dive
Coronary arterial obstruction leading to Myocardial infarction
Q. 1. What are the salient symptoms with which such a patient may present?
Q. 2. Name two adverse functional outcomes of this event.
Note: Even in partial, atherosclerotic coronary arterial obstruction without overlying thrombosis, vascular supply to the myocardium may be interrupted due to a temporary spasm and, tissue damage aggravated by reduced oxygen levels.
Read on:
https://www.osmosis.org/learn/Myocardial_infarction https://www.osmosis.org/answers/testicular-torsion
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